Paul Durrant [Tue, 10 Dec 2019 14:53:05 +0000 (14:53 +0000)]
xen-blkback: prevent premature module unload
Objects allocated by xen_blkif_alloc come from the 'blkif_cache' kmem
cache. This cache is destoyed when xen-blkif is unloaded so it is
necessary to wait for the deferred free routine used for such objects to
complete. This necessity was missed in commit 49cabbc88f35 "xen-blkback:
allow module to be cleanly unloaded". This patch fixes the problem by
taking/releasing extra module references in xen_blkif_alloc/free()
respectively.
Signed-off-by: Paul Durrant <pdurrant@amazon.com> Reviewed-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: Juergen Gross <jgross@suse.com>
Paul Durrant [Mon, 2 Dec 2019 11:41:16 +0000 (11:41 +0000)]
xen/xenbus: reference count registered modules
To prevent a PV driver module being removed whilst attached to its other
end, and hence xenbus calling into potentially invalid text, take a
reference on the module before calling the probe() method (dropping it if
unsuccessful) and drop the reference after returning from the remove()
method.
Suggested-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Paul Durrant <pdurrant@amazon.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
Juergen Gross [Thu, 7 Nov 2019 11:15:46 +0000 (12:15 +0100)]
xen/gntdev: switch from kcalloc() to kvcalloc()
With sufficient many pages to map gntdev can reach order 9 allocation
sizes. As there is no need to have physically contiguous buffers switch
to kvcalloc() in order to avoid failing allocations.
Juergen Gross [Thu, 7 Nov 2019 11:15:45 +0000 (12:15 +0100)]
xen/gntdev: replace global limit of mapped pages by limit per call
Today there is a global limit of pages mapped via /dev/xen/gntdev set
to 1 million pages per default. There is no reason why that limit is
existing, as total number of grant mappings is limited by the
hypervisor anyway and preferring kernel mappings over userspace ones
doesn't make sense. It should be noted that the gntdev device is
usable by root only.
Additionally checking of that limit is fragile, as the number of pages
to map via one call is specified in a 32-bit unsigned variable which
isn't tested to stay within reasonable limits (the only test is the
value to be <= zero, which basically excludes only calls without any
mapping requested). So trying to map e.g. 0xffff0000 pages while
already nearly 1000000 pages are mapped will effectively lower the
global number of mapped pages such that a parallel call mapping a
reasonable amount of pages can succeed in spite of the global limit
being violated.
So drop the global limit and introduce per call limit instead. This
per call limit (default: 65536 grant mappings) protects against
allocating insane large arrays in the kernel for doing a hypercall
which will fail anyway in case a user is e.g. trying to map billions
of pages.
Colin Ian King [Mon, 11 Nov 2019 12:20:09 +0000 (12:20 +0000)]
xen/gntdev: remove redundant non-zero check on ret
The non-zero check on ret is always going to be false because
ret was initialized as zero and the only place it is set to
non-zero contains a return path before the non-zero check. Hence
the check is redundant and can be removed.
[ jgross@suse.com: limit scope of ret ]
Addresses-Coverity: ("Logically dead code") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
__xen_evtchn_do_upcall() contains guards against being called
recursively. This mechanism was introduced in the early pvops times
(kernel 2.6.26) when there were all the Xen backend drivers missing
from the upstream kernel, and some of those out-of-tree drivers were
enabling interrupts in their event handlers (which was explicitly
allowed in the initial XenoLinux).
Nowadays we don't need to support those old drivers any more and the
capability to allow recursive calls of __xen_evtchn_do_upcall() can
be removed.
* tag 'seccomp-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: rework define for SECCOMP_USER_NOTIF_FLAG_CONTINUE
seccomp: fix SECCOMP_USER_NOTIF_FLAG_CONTINUE test
seccomp: simplify secure_computing()
seccomp: test SECCOMP_USER_NOTIF_FLAG_CONTINUE
seccomp: add SECCOMP_USER_NOTIF_FLAG_CONTINUE
seccomp: avoid overflow in implicit constant conversion
Linus Torvalds [Sun, 1 Dec 2019 01:01:48 +0000 (17:01 -0800)]
Merge tag 'audit-pr-20191126' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"Audit is back for v5.5, albeit with only two patches:
- Allow for the auditing of suspicious O_CREAT usage via the new
AUDIT_ANOM_CREAT record.
- Remove a redundant if-conditional check found during code analysis.
It's a minor change, but when the pull request is only two patches
long, you need filler in the pull request email"
[ Heh on the pull request filler. I wish more people tried to write
better pull request messages, even if maybe it's not worth it for the
trivial cases ;^) - Linus ]
* tag 'audit-pr-20191126' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: remove redundant condition check in kauditd_thread()
audit: Report suspicious O_CREAT usage
Linus Torvalds [Sun, 1 Dec 2019 00:55:37 +0000 (16:55 -0800)]
Merge tag 'selinux-pr-20191126' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
"Only three SELinux patches for v5.5:
- Remove the size limit on SELinux policies, the limitation was a
lingering vestige and no longer necessary.
- Allow file labeling before the policy is loaded. This should ease
some of the burden when the policy is initially loaded (no need to
relabel files), but it should also help enable some new system
concepts which dynamically create the root filesystem in the
initrd.
- Add support for the "greatest lower bound" policy construct which
is defined as the intersection of the MLS range of two SELinux
labels"
* tag 'selinux-pr-20191126' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: default_range glblub implementation
selinux: allow labeling before policy is loaded
selinux: remove load size limit
Linus Torvalds [Sun, 1 Dec 2019 00:41:55 +0000 (16:41 -0800)]
Merge tag 'kgdb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux
Pull kgdb updates from Daniel Thompson:
"The major change here is the work from Douglas Anderson that reworks
the way kdb stack traces are handled on SMP systems. The effect is to
allow all CPUs to issue their stack trace which reduced the need for
architecture specific code to support stack tracing.
Also included are general of clean ups from Doug and myself:
- Remove some unused variables or arguments.
- Tidy up the kdb escape handling code and fix a couple of odd corner
cases.
- Better ignore escape characters that do not form part of an escape
sequence. This mostly benefits vi users since they are most likely
to press escape as a nervous habit but it won't harm anyone else"
* tag 'kgdb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
kdb: Tweak escape handling for vi users
kdb: Improve handling of characters from different input sources
kdb: Remove special case logic from kdb_read()
kdb: Simplify code to fetch characters from console
kdb: Tidy up code to handle escape sequences
kdb: Avoid array subscript warnings on non-SMP builds
kdb: Fix stack crawling on 'running' CPUs that aren't the master
kdb: Fix "btc <cpu>" crash if the CPU didn't round up
kdb: Remove unused "argcount" param from kdb_bt1(); make btaprompt bool
kgdb: Remove unused DCPU_SSTEP definition
* tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (22 commits)
Drivers: hv: vmbus: Fix crash handler reset of Hyper-V synic
drivers/hv: Replace binary semaphore with mutex
drivers: iommu: hyperv: Make HYPERV_IOMMU only available on x86
HID: hyperv: Add the support of hibernation
hv_balloon: Add the support of hibernation
x86/hyperv: Implement hv_is_hibernation_supported()
Drivers: hv: balloon: Remove dependencies on guest page size
Drivers: hv: vmbus: Remove dependencies on guest page size
x86: hv: Add function to allocate zeroed page for Hyper-V
Drivers: hv: util: Specify ring buffer size using Hyper-V page size
Drivers: hv: Specify receive buffer size using Hyper-V page size
tools: hv: add vmbus testing tool
drivers: hv: vmbus: Introduce latency testing
video: hyperv: hyperv_fb: Support deferred IO for Hyper-V frame buffer driver
video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host
hv_netvsc: Add the support of hibernation
hv_sock: Add the support of hibernation
video: hyperv_fb: Add the support of hibernation
scsi: storvsc: Add the support of hibernation
Drivers: hv: vmbus: Add module parameter to cap the VMBus version
...
Linus Torvalds [Sat, 30 Nov 2019 22:49:08 +0000 (14:49 -0800)]
Merge branch 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS fix from Borislav Petkov:
"One urgent fix for the thermal throttling machinery: the recent change
reworking the thermal notifications forgot to mask out read-only and
reserved bits in the thermal status MSRs, leading to exceptions while
writing those MSRs.
The fix takes care of masking out those bits first"
* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce/therm_throt: Mask out read-only and reserved MSR bits
Linus Torvalds [Sat, 30 Nov 2019 22:45:32 +0000 (14:45 -0800)]
Merge branch 'parisc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Just trivial small updates: An assembler register optimization in the
inlined networking checksum functions, a compiler warning fix and
don't unneccesary print a runtime warning on machines which wouldn't
be affected anyway"
* 'parisc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Avoid spurious inequivalent alias kernel error messages
kexec: Fix pointer-to-int-cast warnings
parisc: Do not hardcode registers in checksum functions
Linus Torvalds [Sat, 30 Nov 2019 22:35:43 +0000 (14:35 -0800)]
Merge tag 'powerpc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Infrastructure for secure boot on some bare metal Power9 machines.
The firmware support is still in development, so the code here
won't actually activate secure boot on any existing systems.
- A change to xmon (our crash handler / pseudo-debugger) to restrict
it to read-only mode when the kernel is lockdown'ed, otherwise it's
trivial to drop into xmon and modify kernel data, such as the
lockdown state.
- Support for KASLR on 32-bit BookE machines (Freescale / NXP).
- Fixes for our flush_icache_range() and __kernel_sync_dicache()
(VDSO) to work with memory ranges >4GB.
- Some reworks of the pseries CMM (Cooperative Memory Management)
driver to make it behave more like other balloon drivers and enable
some cleanups of generic mm code.
- A series of fixes to our hardware breakpoint support to properly
handle unaligned watchpoint addresses.
Plus a bunch of other smaller improvements, fixes and cleanups.
Thanks to: Alastair D'Silva, Andrew Donnellan, Aneesh Kumar K.V,
Anthony Steinhauser, Cédric Le Goater, Chris Packham, Chris Smart,
Christophe Leroy, Christopher M. Riedl, Christoph Hellwig, Claudio
Carvalho, Daniel Axtens, David Hildenbrand, Deb McLemore, Diana
Craciun, Eric Richter, Geert Uytterhoeven, Greg Kroah-Hartman, Greg
Kurz, Gustavo L. F. Walbon, Hari Bathini, Harish, Jason Yan, Krzysztof
Kozlowski, Leonardo Bras, Mathieu Malaterre, Mauro S. M. Rodrigues,
Michal Suchanek, Mimi Zohar, Nathan Chancellor, Nathan Lynch, Nayna
Jain, Nick Desaulniers, Oliver O'Halloran, Qian Cai, Rasmus Villemoes,
Ravi Bangoria, Sam Bobroff, Santosh Sivaraj, Scott Wood, Thomas Huth,
Tyrel Datwyler, Vaibhav Jain, Valentin Longchamp, YueHaibing"
* tag 'powerpc-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (144 commits)
powerpc/fixmap: fix crash with HIGHMEM
x86/efi: remove unused variables
powerpc: Define arch_is_kernel_initmem_freed() for lockdep
powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp
powerpc: Avoid clang warnings around setjmp and longjmp
powerpc: Don't add -mabi= flags when building with Clang
powerpc: Fix Kconfig indentation
powerpc/fixmap: don't clear fixmap area in paging_init()
selftests/powerpc: spectre_v2 test must be built 64-bit
powerpc/powernv: Disable native PCIe port management
powerpc/kexec: Move kexec files into a dedicated subdir.
powerpc/32: Split kexec low level code out of misc_32.S
powerpc/sysdev: drop simple gpio
powerpc/83xx: map IMMR with a BAT.
powerpc/32s: automatically allocate BAT in setbat()
powerpc/ioremap: warn on early use of ioremap()
powerpc: Add support for GENERIC_EARLY_IOREMAP
powerpc/fixmap: Use __fix_to_virt() instead of fix_to_virt()
powerpc/8xx: use the fixmapped IMMR in cpm_reset()
powerpc/8xx: add __init to cpm1 init functions
...
Linus Torvalds [Sat, 30 Nov 2019 22:29:19 +0000 (14:29 -0800)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- improve ARM implementation of pfn_valid()
- various sparse fixes
- spelling fixes
- add further ARMv8 debug architecture versions
- clang fix for decompressor
- update to generic vDSO
- remove Brahma-B53 from spectre hardening
- initialise broadcast hrtimer device
- use correct nm executable in decompressor
- remove old mcount et.al.
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (26 commits)
ARM: 8940/1: ftrace: remove mcount(),ftrace_caller_old() and ftrace_call_old()
ARM: 8939/1: kbuild: use correct nm executable
ARM: 8938/1: kernel: initialize broadcast hrtimer based clock event device
ARM: 8937/1: spectre-v2: remove Brahma-B53 from hardening
ARM: 8933/1: replace Sun/Solaris style flag on section directive
ARM: 8932/1: Add clock_gettime64 entry point
ARM: 8931/1: Add clock_getres entry point
ARM: 8930/1: Add support for generic vDSO
ARM: 8929/1: use APSR_nzcv instead of r15 as mrc operand
ARM: 8927/1: ARM/hw_breakpoint: add more ARMv8 debug architecture versions support
ARM: 8918/2: only build return_address() if needed
ARM: 8928/1: ARM_ERRATA_775420: Spelling s/date/data/
ARM: 8925/1: tcm: include <asm/tcm.h> for missing declarations
ARM: 8924/1: tcm: make dtcm_end and itcm_end static
ARM: 8923/1: mm: include <asm/vga.h> for vga_base
ARM: 8922/1: parse_dt_topology() rate is pointer to __be32
ARM: 8920/1: share get_signal_page from signal.c to process.c
ARM: 8919/1: make unexported functions static
ARM: 8917/1: mm: include <asm/set_memory.h>
ARM: 8916/1: mm: make set_section_perms() static
...
Linus Torvalds [Sat, 30 Nov 2019 22:28:11 +0000 (14:28 -0800)]
Merge tag 'nds32-for-linus-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux
Pull nds32 updates from Greentime Hu:
- code clean up
- add a nds32 maintainer
* tag 'nds32-for-linus-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux:
MAINTAINERS: add nds32 maintainer
nds32: Move static keyword to the front of declaration
nds32: Fix typo in Kconfig.cpu
nds32: remove unneeded clean-files for DTB
Linus Torvalds [Sat, 30 Nov 2019 22:12:13 +0000 (14:12 -0800)]
Merge tag 'notifications-pipe-prep-20191115' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull pipe rework from David Howells:
"This is my set of preparatory patches for building a general
notification queue on top of pipes. It makes a number of significant
changes:
- It removes the nr_exclusive argument from __wake_up_sync_key() as
this is always 1. This prepares for the next step:
- Adds wake_up_interruptible_sync_poll_locked() so that poll can be
woken up from a function that's holding the poll waitqueue
spinlock.
- Change the pipe buffer ring to be managed in terms of unbounded
head and tail indices rather than bounded index and length. This
means that reading the pipe only needs to modify one index, not
two.
- A selection of helper functions are provided to query the state of
the pipe buffer, plus a couple to apply updates to the pipe
indices.
- The pipe ring is allowed to have kernel-reserved slots. This allows
many notification messages to be spliced in by the kernel without
allowing userspace to pin too many pages if it writes to the same
pipe.
- Advance the head and tail indices inside the pipe waitqueue lock
and use wake_up_interruptible_sync_poll_locked() to poke poll
without having to take the lock twice.
- Rearrange pipe_write() to preallocate the buffer it is going to
write into and then drop the spinlock. This allows kernel
notifications to then be added the ring whilst it is filling the
buffer it allocated. The read side is stalled because the pipe
mutex is still held.
- Don't wake up readers on a pipe if there was already data in it
when we added more.
- Don't wake up writers on a pipe if the ring wasn't full before we
removed a buffer"
* tag 'notifications-pipe-prep-20191115' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
pipe: Remove sync on wake_ups
pipe: Increase the writer-wakeup threshold to reduce context-switch count
pipe: Check for ring full inside of the spinlock in pipe_write()
pipe: Remove redundant wakeup from pipe_write()
pipe: Rearrange sequence in pipe_write() to preallocate slot
pipe: Conditionalise wakeup in pipe_read()
pipe: Advance tail pointer inside of wait spinlock in pipe_read()
pipe: Allow pipes to have kernel-reserved slots
pipe: Use head and tail pointers for the ring, not cursor and length
Add wake_up_interruptible_sync_poll_locked()
Remove the nr_exclusive argument from __wake_up_sync_key()
pipe: Reduce #inclusion of pipe_fs_i.h
Linus Torvalds [Sat, 30 Nov 2019 19:34:33 +0000 (11:34 -0800)]
Merge tag 'fsnotify_for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"Three fsnotify cleanups"
* tag 'fsnotify_for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Add git tree reference to MAINTAINERS
fsnotify/fdinfo: exportfs_encode_inode_fh() takes pointer as 4th argument
fsnotify: move declaration of fsnotify_mark_connector_cachep to fsnotify.h
Linus Torvalds [Sat, 30 Nov 2019 19:16:07 +0000 (11:16 -0800)]
Merge tag 'for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2, quota, reiserfs cleanups and fixes from Jan Kara:
- Refactor the quota on/off kernel internal interfaces (mostly for
ubifs quota support as ubifs does not want to have inodes holding
quota information)
- A few other small quota fixes and cleanups
- Various small ext2 fixes and cleanups
- Reiserfs xattr fix and one cleanup
* tag 'for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (28 commits)
ext2: code cleanup for descriptor_loc()
fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long
ext2: fix improper function comment
ext2: code cleanup for ext2_try_to_allocate()
ext2: skip unnecessary operations in ext2_try_to_allocate()
ext2: Simplify initialization in ext2_try_to_allocate()
ext2: code cleanup by calling ext2_group_last_block_no()
ext2: introduce new helper ext2_group_last_block_no()
reiserfs: replace open-coded atomic_dec_and_mutex_lock()
ext2: check err when partial != NULL
quota: Handle quotas without quota inodes in dquot_get_state()
quota: Make dquot_disable() work without quota inodes
quota: Drop dquot_enable()
fs: Use dquot_load_quota_inode() from filesystems
quota: Rename vfs_load_quota_inode() to dquot_load_quota_inode()
quota: Simplify dquot_resume()
quota: Factor out setup of quota inode
quota: Check that quota is not dirty before release
quota: fix livelock in dquot_writeback_dquots
ext2: don't set *count in the case of failure in ext2_try_to_allocate()
...
Linus Torvalds [Sat, 30 Nov 2019 19:13:33 +0000 (11:13 -0800)]
Merge tag 'erofs-for-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"No major kernel updates for this round since I'm fully diving into
LZMA algorithm internals now to provide high CR XZ algorihm support.
That needs more work and time for me to get a better compression time.
Summary:
- Introduce superblock checksum support
- Set iowait when waiting I/O for sync decompression path
- Several code cleanups"
* tag 'erofs-for-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: remove unnecessary output in erofs_show_options()
erofs: drop all vle annotations for runtime names
erofs: support superblock checksum
erofs: set iowait for sync decompression
erofs: clean up decompress queue stuffs
erofs: get rid of __stagingpage_alloc helper
erofs: remove dead code since managed cache is now built-in
erofs: clean up collection handling routines
Linus Torvalds [Sat, 30 Nov 2019 19:10:39 +0000 (11:10 -0800)]
Merge tag '5.5-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs updates from Steve French:
"Various smb3 fixes (including 12 for stable) and also features
(addition of multichannel support)"
* tag '5.5-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: (41 commits)
CIFS: fix a white space issue in cifs_get_inode_info()
cifs: update internal module version number
cifs: Always update signing key of first channel
cifs: Fix retrieval of DFS referrals in cifs_mount()
cifs: Fix potential softlockups while refreshing DFS cache
cifs: Fix lookup of root ses in DFS referral cache
cifs: Fix use-after-free bug in cifs_reconnect()
cifs: dump channel info in DebugData
smb3: dump in_send and num_waiters stats counters by default
cifs: try harder to open new channels
CIFS: Properly process SMB3 lease breaks
cifs: move cifsFileInfo_put logic into a work-queue
cifs: try opening channels after mounting
CIFS: refactor cifs_get_inode_info()
cifs: switch servers depending on binding state
cifs: add server param
cifs: add multichannel mount options and data structs
cifs: sort interface list by speed
CIFS: Fix SMB2 oplock break processing
cifs: don't use 'pre:' for MODULE_SOFTDEP
...
Linus Torvalds [Sat, 30 Nov 2019 19:02:30 +0000 (11:02 -0800)]
Merge tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've introduced fairly small number of patches as below.
Enhancements:
- improve the in-place-update IO flow
- allocate segment to guarantee no GC for pinned files
Bug fixes:
- fix updatetime in lazytime mode
- potential memory leak in f2fs_listxattr
- record parent inode number in rename2 correctly
- fix deadlock in f2fs_gc along with atomic writes
- avoid needless data migration in GC"
* tag 'f2fs-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: stop GC when the victim becomes fully valid
f2fs: expose main_blkaddr in sysfs
f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()
f2fs: Fix deadlock in f2fs_gc() context during atomic files handling
f2fs: show f2fs instance in printk_ratelimited
f2fs: fix potential overflow
f2fs: fix to update dir's i_pino during cross_rename
f2fs: support aligned pinned file
f2fs: avoid kernel panic on corruption test
f2fs: fix wrong description in document
f2fs: cache global IPU bio
f2fs: fix to avoid memory leakage in f2fs_listxattr
f2fs: check total_segments from devices in raw_super
f2fs: update multi-dev metadata in resize_fs
f2fs: mark recovery flag correctly in read_raw_super_block()
f2fs: fix to update time in lazytime mode
Linus Torvalds [Sat, 30 Nov 2019 18:57:22 +0000 (10:57 -0800)]
Merge tag 'afs-next-20191121' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS updates from David Howells:
"Minor cleanups and fix:
- Minor fix to make some debugging statements display information
from the correct iov_iter.
- Rename some members and variables to make things more obvious or
consistent.
- Provide a helper to wrap increments of the usage count on the
afs_read struct.
- Use scnprintf() to print into a stack buffer rather than sprintf().
- Remove some set but unused variables"
* tag 'afs-next-20191121' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Remove set but not used variable 'ret'
afs: Remove set but not used variables 'before', 'after'
afs: xattr: use scnprintf
afs: Introduce an afs_get_read() refcount helper
afs: Rename desc -> req in afs_fetch_data()
afs: Switch the naming of call->iter and call->_iter
afs: Use call->_iter not &call->iter in debugging statements
Linus Torvalds [Sat, 30 Nov 2019 18:53:02 +0000 (10:53 -0800)]
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"This merge window saw the the following new featuers added to ext4:
- Direct I/O via iomap (required the iomap-for-next branch from
Darrick as a prereq).
- Support for using dioread-nolock where the block size < page size.
- Support for encryption for file systems where the block size < page
size.
- Rework of journal credits handling so a revoke-heavy workload will
not cause the journal to run out of space.
- Replace bit-spinlocks with spinlocks in jbd2
Also included were some bug fixes and cleanups, mostly to clean up
corner cases from fuzzed file systems and error path handling"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (59 commits)
ext4: work around deleting a file with i_nlink == 0 safely
ext4: add more paranoia checking in ext4_expand_extra_isize handling
jbd2: make jbd2_handle_buffer_credits() handle reserved handles
ext4: fix a bug in ext4_wait_for_tail_page_commit
ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails
ext4: code cleanup for get_next_id
ext4: fix leak of quota reservations
ext4: remove unused variable warning in parse_options()
ext4: Enable encryption for subpage-sized blocks
fs/buffer.c: support fscrypt in block_read_full_page()
ext4: Add error handling for io_end_vec struct allocation
jbd2: Fine tune estimate of necessary descriptor blocks
jbd2: Provide trace event for handle restarts
ext4: Reserve revoke credits for freed blocks
jbd2: Make credit checking more strict
jbd2: Rename h_buffer_credits to h_total_credits
jbd2: Reserve space for revoke descriptor blocks
jbd2: Drop jbd2_space_needed()
jbd2: Account descriptor blocks into t_outstanding_credits
jbd2: Factor out common parts of stopping and restarting a handle
...
Linus Torvalds [Sat, 30 Nov 2019 18:48:24 +0000 (10:48 -0800)]
Merge tag 'vfs-5.5-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull splice fix from Darrick Wong:
"Fix another place in the splice code where a pipe could ask a
filesystem for a longer read than the pipe actually has free buffer
space"
* tag 'vfs-5.5-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
splice: only read in as much information as there is pipe buffer space
Linus Torvalds [Sat, 30 Nov 2019 18:44:49 +0000 (10:44 -0800)]
Merge tag 'iomap-5.5-merge-11' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"In this release, we hoisted as much of XFS' writeback code into iomap
as was practicable, refactored the unshare file data function, added
the ability to perform buffered io copy on write, and tweaked various
parts of the directio implementation as needed to port ext4's directio
code (that will be a separate pull).
Summary:
- Make iomap_dio_rw callers explicitly tell us if they want us to
wait
- Port the xfs writeback code to iomap to complete the buffered io
library functions
- Refactor the unshare code to share common pieces
- Add support for performing copy on write with buffered writes
- Other minor fixes
- Fix unchecked return in iomap_bmap
- Fix a type casting bug in a ternary statement in
iomap_dio_bio_actor
- Improve tracepoints for easier diagnostic ability
- Fix pipe page leakage in directio reads"
* tag 'iomap-5.5-merge-11' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (31 commits)
iomap: Fix pipe page leakage during splicing
iomap: trace iomap_appply results
iomap: fix return value of iomap_dio_bio_actor on 32bit systems
iomap: iomap_bmap should check iomap_apply return value
iomap: Fix overflow in iomap_page_mkwrite
fs/iomap: remove redundant check in iomap_dio_rw()
iomap: use a srcmap for a read-modify-write I/O
iomap: renumber IOMAP_HOLE to 0
iomap: use write_begin to read pages to unshare
iomap: move the zeroing case out of iomap_read_page_sync
iomap: ignore non-shared or non-data blocks in xfs_file_dirty
iomap: always use AOP_FLAG_NOFS in iomap_write_begin
iomap: remove the unused iomap argument to __iomap_write_end
iomap: better document the IOMAP_F_* flags
iomap: enhance writeback error message
iomap: pass a struct page to iomap_finish_page_writeback
iomap: cleanup iomap_ioend_compare
iomap: move struct iomap_page out of iomap.h
iomap: warn on inline maps in iomap_writepage_map
iomap: lift the xfs writeback code to iomap
...
Linus Torvalds [Sat, 30 Nov 2019 18:33:14 +0000 (10:33 -0800)]
Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull hmm updates from Jason Gunthorpe:
"This is another round of bug fixing and cleanup. This time the focus
is on the driver pattern to use mmu notifiers to monitor a VA range.
This code is lifted out of many drivers and hmm_mirror directly into
the mmu_notifier core and written using the best ideas from all the
driver implementations.
This removes many bugs from the drivers and has a very pleasing
diffstat. More drivers can still be converted, but that is for another
cycle.
- A shared branch with RDMA reworking the RDMA ODP implementation
- New mmu_interval_notifier API. This is focused on the use case of
monitoring a VA and simplifies the process for drivers
- A common seq-count locking scheme built into the
mmu_interval_notifier API usable by drivers that call
get_user_pages() or hmm_range_fault() with the VA range
- Conversion of mlx5 ODP, hfi1, radeon, nouveau, AMD GPU, and Xen
GntDev drivers to the new API. This deletes a lot of wonky driver
code.
- Two improvements for hmm_range_fault(), from testing done by Ralph"
* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
mm/hmm: remove hmm_range_dma_map and hmm_range_dma_unmap
mm/hmm: make full use of walk_page_range()
xen/gntdev: use mmu_interval_notifier_insert
mm/hmm: remove hmm_mirror and related
drm/amdgpu: Use mmu_interval_notifier instead of hmm_mirror
drm/amdgpu: Use mmu_interval_insert instead of hmm_mirror
drm/amdgpu: Call find_vma under mmap_sem
nouveau: use mmu_interval_notifier instead of hmm_mirror
nouveau: use mmu_notifier directly for invalidate_range_start
drm/radeon: use mmu_interval_notifier_insert
RDMA/hfi1: Use mmu_interval_notifier_insert for user_exp_rcv
RDMA/odp: Use mmu_interval_notifier_insert()
mm/hmm: define the pre-processor related parts of hmm.h even if disabled
mm/hmm: allow hmm_range to be used with a mmu_interval_notifier or hmm_mirror
mm/mmu_notifier: add an interval tree notifier
mm/mmu_notifier: define the header pre-processor parts even if disabled
mm/hmm: allow snapshot of the special zero page
Linus Torvalds [Sat, 30 Nov 2019 17:38:11 +0000 (09:38 -0800)]
Merge tag 'drm-vmwgfx-coherent-2019-11-29' of git://anongit.freedesktop.org/drm/drm
Pull drm coherent memory support for vmwgfx from Dave Airlie:
"This is a separate pull for the mm pagewalking + drm/vmwgfx work
Thomas did and you were involved in, I've left it separate in case you
don't feel as comfortable with it as the other stuff.
It has mm acks/r-b in the right places from what I can see"
* tag 'drm-vmwgfx-coherent-2019-11-29' of git://anongit.freedesktop.org/drm/drm:
drm/vmwgfx: Add surface dirty-tracking callbacks
drm/vmwgfx: Implement an infrastructure for read-coherent resources
drm/vmwgfx: Use an RBtree instead of linked list for MOB resources
drm/vmwgfx: Implement an infrastructure for write-coherent resources
mm: Add write-protect and clean utilities for address space ranges
mm: Add a walk_page_mapping() function to the pagewalk code
mm: pagewalk: Take the pagetable lock in walk_pte_range()
mm: Remove BUG_ON mmap_sem not held from xxx_trans_huge_lock()
drm/ttm: Convert vm callbacks to helpers
drm/ttm: Remove explicit typecasts of vm_private_data
Christophe Leroy [Thu, 28 Nov 2019 07:59:22 +0000 (07:59 +0000)]
powerpc/fixmap: fix crash with HIGHMEM
Commit 3f2a95297681 ("powerpc/fixmap: don't clear fixmap area in
paging_init()") removed the clearing of fixmap area in order to
avoid clearing fixmapped areas set earlier.
However unlike all other users of fixmap which use __set_fixmap(),
HIGHMEM functions directly use __set_pte_at(). This means
the page table must pre-exist, otherwise the following crash
can be encoutered due to the lack of entry in the PGD.
x86/mce/therm_throt: Mask out read-only and reserved MSR bits
While writing to MSR IA32_THERM_STATUS/IA32_PKG_THERM_STATUS, avoid
writing 1 to read only and reserved fields because updating some fields
generates exception.
Linus Torvalds [Thu, 28 Nov 2019 19:16:43 +0000 (11:16 -0800)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- improve dma-debug scalability (Eric Dumazet)
- tiny dma-debug cleanup (Dan Carpenter)
- check for vmap memory in dma_map_single (Kees Cook)
- check for dma_addr_t overflows in dma-direct when using DMA offsets
(Nicolas Saenz Julienne)
- switch the x86 sta2x11 SOC to use more generic DMA code (Nicolas
Saenz Julienne)
- replace the bus dma mask with a limit (Nicolas Saenz Julienne)
- merge the remapping helpers into the main dma-direct flow (me)
- switch xtensa to the generic dma remap handling (me)
- various cleanups around dma_capable (me)
- remove unused dev arguments to various dma-noncoherent helpers (me)
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux:
* tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping: (22 commits)
dma-mapping: treat dev->bus_dma_mask as a DMA limit
dma-direct: exclude dma_direct_map_resource from the min_low_pfn check
dma-direct: don't check swiotlb=force in dma_direct_map_resource
dma-debug: clean up put_hash_bucket()
powerpc: remove support for NULL dev in __phys_to_dma / __dma_to_phys
dma-direct: avoid a forward declaration for phys_to_dma
dma-direct: unify the dma_capable definitions
dma-mapping: drop the dev argument to arch_sync_dma_for_*
x86/PCI: sta2x11: use default DMA address translation
dma-direct: check for overflows on 32 bit DMA addresses
dma-debug: increase HASH_SIZE
dma-debug: reorder struct dma_debug_entry fields
xtensa: use the generic uncached segment support
dma-mapping: merge the generic remapping helpers into dma-direct
dma-direct: provide mmap and get_sgtable method overrides
dma-direct: remove the dma_handle argument to __dma_direct_alloc_pages
dma-direct: remove __dma_direct_free_pages
usb: core: Remove redundant vmap checks
kernel: dma-contiguous: mark CMA parameters __initdata/__initconst
dma-debug: add a schedule point in debug_dma_dump_mappings()
...
Linus Torvalds [Thu, 28 Nov 2019 18:57:12 +0000 (10:57 -0800)]
Merge tag 'ioremap-5.5' of git://git.infradead.org/users/hch/ioremap
Pull generic ioremap support from Christoph Hellwig:
"This adds the remaining bits for an entirely generic ioremap and
iounmap to lib/ioremap.c. To facilitate that, it cleans up the giant
mess of weird ioremap variants we had with no users outside the arch
code.
For now just the three newest ports use the code, but there is more
than a handful others that can be converted without too much work.
Summary:
- clean up various obsolete ioremap and iounmap variants
- add a new generic ioremap implementation and switch csky, nds32 and
riscv over to it"
* tag 'ioremap-5.5' of git://git.infradead.org/users/hch/ioremap: (21 commits)
nds32: use generic ioremap
csky: use generic ioremap
csky: remove ioremap_cache
riscv: use the generic ioremap code
lib: provide a simple generic ioremap implementation
sh: remove __iounmap
nios2: remove __iounmap
hexagon: remove __iounmap
m68k: rename __iounmap and mark it static
arch: rely on asm-generic/io.h for default ioremap_* definitions
asm-generic: don't provide ioremap for CONFIG_MMU
asm-generic: ioremap_uc should behave the same with and without MMU
xtensa: clean up ioremap
x86: Clean up ioremap()
parisc: remove __ioremap
nios2: remove __ioremap
alpha: remove the unused __ioremap wrapper
hexagon: clean up ioremap
ia64: rename ioremap_nocache to ioremap_uc
unicore32: remove ioremap_cached
...
Linus Torvalds [Thu, 28 Nov 2019 18:43:39 +0000 (10:43 -0800)]
Merge tag 'for-5.5/io_uring-post-20191128' of git://git.kernel.dk/linux-block
Pull more io_uring updates from Jens Axboe:
"As mentioned in the first pull request, there was a later batch as
well. This contains fixes to the stuff that already went in, cleanups,
and a few later additions. In particular, this contains:
- Cleanups/fixes/unification of the submission and completion path
(Pavel,me)
- Linked timeouts improvements (Pavel,me)
- Error path fixes (me)
- Fix lookup window where cancellations wouldn't work (me)
- Improve DRAIN support (Pavel)
- Fix backlog flushing -EBUSY on submit (me)
- Add support for connect(2) (me)
- Fix for non-iter based fixed IO (Pavel)
- creds inheritance for async workers (me)
- Disable cmsg/ancillary data for sendmsg/recvmsg (me)
- Shrink io_kiocb to 3 cachelines (me)
- NUMA fix for io-wq (Jann)"
* tag 'for-5.5/io_uring-post-20191128' of git://git.kernel.dk/linux-block: (42 commits)
io_uring: make poll->wait dynamically allocated
io-wq: shrink io_wq_work a bit
io-wq: fix handling of NUMA node IDs
io_uring: use kzalloc instead of kcalloc for single-element allocations
io_uring: cleanup io_import_fixed()
io_uring: inline struct sqe_submit
io_uring: store timeout's sqe->off in proper place
net: disallow ancillary data for __sys_{send,recv}msg_file()
net: separate out the msghdr copy from ___sys_{send,recv}msg()
io_uring: remove superfluous check for sqe->off in io_accept()
io_uring: async workers should inherit the user creds
io-wq: have io_wq_create() take a 'data' argument
io_uring: fix dead-hung for non-iter fixed rw
io_uring: add support for IORING_OP_CONNECT
net: add __sys_connect_file() helper
io_uring: only return -EBUSY for submit on non-flushed backlog
io_uring: only !null ptr to io_issue_sqe()
io_uring: simplify io_req_link_next()
io_uring: pass only !null to io_req_find_next()
io_uring: remove io_free_req_find_next()
...
Dave Airlie [Thu, 28 Nov 2019 02:39:50 +0000 (12:39 +1000)]
Merge branch 'vmwgfx-coherent' of git://people.freedesktop.org/~thomash/linux into drm-next
Graphics APIs like OpenGL 4.4 and Vulkan require the graphics driver
to provide coherent graphics memory, meaning that the GPU sees any
content written to the coherent memory on the next GPU operation that
touches that memory, and the CPU sees any content written by the GPU
to that memory immediately after any fence object trailing the GPU
operation is signaled.
Paravirtual drivers that otherwise require explicit synchronization
needs to do this by hooking up dirty tracking to pagefault handlers
and buffer object validation.
Provide mm helpers needed for this and that also allow for huge pmd-
and pud entries (patch 1-3), and the associated vmwgfx code (patch 4-7).
The code has been tested and exercised by a tailored version of mesa
where we disable all explicit synchronization and assume graphics memory
is coherent. The performance loss varies of course; a typical number is
around 5%.
Linus Torvalds [Thu, 28 Nov 2019 01:45:48 +0000 (17:45 -0800)]
Merge tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"Lots of stuff in here, though it hasn't been too insane this merge
apart from dealing with the security fun.
uapi:
- export different colorspace properties on DP vs HDMI
- new fourcc for ARM 16x16 block format
- syncobj: allow querying last submitted timeline value
- DRM_FORMAT_BIG_ENDIAN defined as unsigned
core:
- allow using gem vma manager in ttm
- connector/encoder/bridge doc fixes
- allow more than 3 encoders for a connector
- displayport mst suspend/resume reprobing support
- vram lazy unmapping, uniform vram mm and gem vram
- edid cleanups + AVI informframe bar info
- displayport helpers - dpcd parser added
dp_cec:
- Allow a connector to be associated with a cec device
ttm:
- pipelining with no_gpu_wait fix
- always keep BOs on the LRU
sched:
- allow free_job routine to sleep
i915:
- Block userptr from mappable GTT
- i915 perf uapi versioning
- OA stream dynamic reconfiguration
- make context persistence optional
- introduce DRM_I915_UNSTABLE Kconfig
- add fake lmem testing under unstable
- BT.2020 support for DP MSA
- struct mutex elimination
- Tigerlake display/PLL/power management improvements
- Jasper Lake PCH support
- refactor PMU for multiple GPUs
- Icelake firmware update
- Split out vga + switcheroo code
amdgpu:
- implement dma-buf import/export without helpers
- vega20 RAS enablement
- DC i2c over aux fixes
- renoir GPU reset
- DC HDCP support
- BACO support for CI/VI asics
- MSI-X support
- Arcturus EEPROM support
- Arcturus VCN encode support
- VCN dynamic powergating on RV/RV2
amdkfd:
- add navi12/14/renoir support to kfd
radeon:
- SI dpm fix ported from amdgpu
- fix bad DMA on ppc platforms
gma500:
- memory leak fixes
qxl:
- convert to new gem mmap
exynos:
- build warning fix
komeda:
- add aclk sysfs attribute
v3d:
- userspace cleanup uapi change
i810:
- fix for underflow in dispatch ioctls
ast:
- refactor show_cursor
mgag200:
- refactor show_cursor
arcgpu:
- encoder finding improvements
mediatek:
- mipi_tx, dsi and partial crtc support for MT8183 SoC
- rotation support
meson:
- add suspend/resume support
omap:
- misc refactors
tegra:
- DisplayPort support for Tegra 210, 186 and 194.
- IOMMU-backed DMA API fixes
rcar-du:
- R8A774B1 SoC support
- fixes for H2 ES2.0
sun4i:
- vcc-dsi regulator support
virtio-gpu:
- vmexit vs spinlock fix
- move to gem shmem helpers
- handle large command buffers with cma"
* tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drm: (1855 commits)
drm/amdgpu: invalidate mmhub semaphore workaround in gmc9/gmc10
drm/amdgpu: initialize vm_inv_eng0_sem for gfxhub and mmhub
drm/amd/amdgpu/sriov skip RLCG s/r list for arcturus VF.
drm/amd/amdgpu/sriov temporarily skip ras,dtm,hdcp for arcturus VF
drm/amdgpu/gfx10: re-init clear state buffer after gpu reset
merge fix for "ftrace: Rework event_create_dir()"
drm/amdgpu: Update Arcturus golden registers
drm/amdgpu/gfx10: fix out-of-bound mqd_backup array access
drm/amdgpu/gfx10: explicitly wait for cp idle after halt/unhalt
Revert "drm/amd/display: enable S/G for RAVEN chip"
drm/amdgpu: disable gfxoff on original raven
drm/amdgpu: remove experimental flag for Navi14
drm/amdgpu: disable gfxoff when using register read interface
drm/amdgpu/powerplay: properly set PP_GFXOFF_MASK (v2)
drm/amdgpu: fix bad DMA from INTERRUPT_CNTL2
drm/radeon: fix bad DMA from INTERRUPT_CNTL2
drm/amd/display: Fix debugfs on MST connectors
drm/amdgpu/nv: add asic func for fetching vbios from rom directly
drm/amdgpu: put flush_delayed_work at first
drm/amdgpu/vcn2.5: fix the enc loop with hw fini
...
Pull networking fixes from David Miller:
"This is mostly to fix the iwlwifi regression:
1) Flush GRO state properly in iwlwifi driver, from Alexander Lobakin.
2) Validate TIPC link name with properly length macro, from John
Rutherford.
3) Fix completion init and device query timeouts in ibmvnic, from
Thomas Falcon.
4) Fix SKB size calculation for netlink messages in psample, from
Nikolay Aleksandrov.
5) Similar kind of fix for OVS flow dumps, from Paolo Abeni.
6) Handle queue allocation failure unwind properly in gve driver, we
could try to release pages we didn't allocate. From Jeroen de
Borst.
7) Serialize TX queue SKB list accesses properly in mscc ocelot
driver. From Yangbo Lu"
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net:
net: usb: aqc111: Use the correct style for SPDX License Identifier
net: phy: Use the correct style for SPDX License Identifier
net: wireless: intel: iwlwifi: fix GRO_NORMAL packet stalling
net: mscc: ocelot: use skb queue instead of skbs list
net: mscc: ocelot: avoid incorrect consuming in skbs list
gve: Fix the queue page list allocated pages count
net: inet_is_local_reserved_port() port arg should be unsigned short
openvswitch: fix flow command message size
net: phy: dp83869: Fix return paths to return proper values
net: psample: fix skb_over_panic
net: usbnet: Fix -Wcast-function-type
net: hso: Fix -Wcast-function-type
net: port < inet_prot_sock(net) --> inet_port_requires_bind_service(net, port)
ibmvnic: Serialize device queries
ibmvnic: Bound waits for device queries
ibmvnic: Terminate waiting device threads after loss of service
ibmvnic: Fix completion structure initialization
net-sctp: replace some sock_net(sk) with just 'net'
net: Fix a documentation bug wrt. ip_unprivileged_port_start
tipc: fix link name length check
Linus Torvalds [Wed, 27 Nov 2019 19:42:01 +0000 (11:42 -0800)]
Merge tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"New tracing features:
- New PERMANENT flag to ftrace_ops when attaching a callback to a
function.
As /proc/sys/kernel/ftrace_enabled when set to zero will disable
all attached callbacks in ftrace, this has a detrimental impact on
live kernel tracing, as it disables all that it patched. If a
ftrace_ops is registered to ftrace with the PERMANENT flag set, it
will prevent ftrace_enabled from being disabled, and if
ftrace_enabled is already disabled, it will prevent a ftrace_ops
with PREMANENT flag set from being registered.
- New register_ftrace_direct().
As eBPF would like to register its own trampolines to be called by
the ftrace nop locations directly, without going through the ftrace
trampoline, this function has been added. This allows for eBPF
trampolines to live along side of ftrace, perf, kprobe and live
patching. It also utilizes the ftrace enabled_functions file that
keeps track of functions that have been modified in the kernel, to
allow for security auditing.
- Allow for kernel internal use of ftrace instances.
Subsystems in the kernel can now create and destroy their own
tracing instances which allows them to have their own tracing
buffer, and be able to record events without worrying about other
users from writing over their data.
- New seq_buf_hex_dump() that lets users use the hex_dump() in their
seq_buf usage.
- Notifications now added to tracing_max_latency to allow user space
to know when a new max latency is hit by one of the latency
tracers.
- Wider spread use of generic compare operations for use of bsearch
and friends.
- More synthetic event fields may be defined (32 up from 16)
- Use of xarray for architectures with sparse system calls, for the
system call trace events.
This along with small clean ups and fixes"
* tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (51 commits)
tracing: Enable syscall optimization for MIPS
tracing: Use xarray for syscall trace events
tracing: Sample module to demonstrate kernel access to Ftrace instances.
tracing: Adding new functions for kernel access to Ftrace instances
tracing: Fix Kconfig indentation
ring-buffer: Fix typos in function ring_buffer_producer
ftrace: Use BIT() macro
ftrace: Return ENOTSUPP when DYNAMIC_FTRACE_WITH_DIRECT_CALLS is not configured
ftrace: Rename ftrace_graph_stub to ftrace_stub_graph
ftrace: Add a helper function to modify_ftrace_direct() to allow arch optimization
ftrace: Add helper find_direct_entry() to consolidate code
ftrace: Add another check for match in register_ftrace_direct()
ftrace: Fix accounting bug with direct->count in register_ftrace_direct()
ftrace/selftests: Fix spelling mistake "wakeing" -> "waking"
tracing: Increase SYNTH_FIELDS_MAX for synthetic_events
ftrace/samples: Add a sample module that implements modify_ftrace_direct()
ftrace: Add modify_ftrace_direct()
tracing: Add missing "inline" in stub function of latency_fsnotify()
tracing: Remove stray tab in TRACE_EVAL_MAP_FILE's help text
tracing: Use seq_buf_hex_dump() to dump buffers
...
Linus Torvalds [Wed, 27 Nov 2019 19:30:55 +0000 (11:30 -0800)]
Merge tag 'microblaze-v5.5-rc1' of git://git.monstr.eu/linux-2.6-microblaze
Pull Microblaze updates from Michal Simek:
- extend DTB space
- defconfig update
- clean up rescheduling logic
- enable SPARSE_IRQ
* tag 'microblaze-v5.5-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Increase max dtb size to 64K from 32K
microblaze: Enable SPARSE_IRQ
microblaze: defconfig: Enable devtmps and tmpfs
microblaze: entry: Remove unneeded need_resched() loop
Linus Torvalds [Wed, 27 Nov 2019 19:27:59 +0000 (11:27 -0800)]
Merge tag 'riscv/for-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"New features:
- SECCOMP support
- nommu support
- SBI-less system support
- M-Mode support
- TLB flush optimizations
Other improvements:
- Pass the complete RISC-V ISA string supported by the CPU cores to
userspace, rather than redacting parts of it in the kernel
- Add platform DMA IP block data to the HiFive Unleashed board DT
file
- Add Makefile support for BZ2, LZ4, LZMA, LZO kernel image
compression formats, in line with other architectures
Cleanups:
- Remove unnecessary PTE_PARENT_SIZE macro
- Standardize include guard naming across arch/riscv"
* tag 'riscv/for-v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (22 commits)
riscv: provide a flat image loader
riscv: add nommu support
riscv: clear the instruction cache and all registers when booting
riscv: read the hart ID from mhartid on boot
riscv: provide native clint access for M-mode
riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00
riscv: add support for MMIO access to the timer registers
riscv: implement remote sfence.i using IPIs
riscv: cleanup the default power off implementation
riscv: poison SBI calls for M-mode
riscv: don't allow selecting SBI based drivers for M-mode
RISC-V: Add multiple compression image format.
riscv: clean up the macro format in each header file
riscv: Use PMD_SIZE to replace PTE_PARENT_SIZE
riscv: abstract out CSR names for supervisor vs machine mode
riscv: separate MMIO functions into their own header file
riscv: enter WFI in default_power_off() if SBI does not shutdown
RISC-V: Issue a tlb page flush if possible
RISC-V: Issue a local tlbflush if possible.
RISC-V: Do not invoke SBI call if cpumask is empty
...
Nishad Kamdar [Wed, 27 Nov 2019 13:45:52 +0000 (19:15 +0530)]
net: usb: aqc111: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to drivers for USB Network devices.
This patch gives an explicit block comment to the
SPDX License Identifier.
Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.
Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Nishad Kamdar [Wed, 27 Nov 2019 13:19:08 +0000 (18:49 +0530)]
net: phy: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to PHY Layer for Ethernet drivers.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used). This patch also gives an explicit
block comment to the SPDX License Identifier.
Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.
Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 27 Nov 2019 19:25:04 +0000 (11:25 -0800)]
Merge tag 'powerpc-spectre-rsb' of powerpc-CVE-2019-18660.bundle
Pull powerpc Spectre-RSB fixes from Michael Ellerman:
"We failed to activate the mitigation for Spectre-RSB (Return Stack
Buffer, aka. ret2spec) on context switch, on CPUs prior to Power9
DD2.3.
That allows a process to poison the RSB (called Link Stack on Power
CPUs) and possibly misdirect speculative execution of another process.
If the victim process can be induced to execute a leak gadget then it
may be possible to extract information from the victim via a side
channel.
The fix is to correctly activate the link stack flush mitigation on
all CPUs that have any mitigation of Spectre v2 in userspace enabled.
There's a second commit which adds a link stack flush in the KVM guest
exit path. A leak via that path has not been demonstrated, but we
believe it's at least theoretically possible.
This is the fix for CVE-2019-18660"
* tag 'powerpc-spectre-rsb' of /home/torvalds/Downloads/powerpc-CVE-2019-18660.bundle:
KVM: PPC: Book3S HV: Flush link stack on guest exit to host kernel
powerpc/book3s64: Fix link stack flush on context switch
Commit 3240c95a722e ("net: core: use listified Rx for GRO_NORMAL in
napi_gro_receive()") has applied batched GRO_NORMAL packets processing
to all napi_gro_receive() users, including mac80211-based drivers.
However, this change has led to a regression in iwlwifi driver [1][2] as
it is required for NAPI users to call napi_complete_done() or
napi_complete() and the end of every polling iteration, whilst iwlwifi
doesn't use NAPI scheduling at all and just calls napi_gro_flush().
In that particular case, packets which have not been already flushed
from napi->rx_list stall in it until at least next Rx cycle.
Fix this by adding a manual flushing of the list to iwlwifi driver right
before napi_gro_flush() call to mimic napi_complete() logics.
I prefer to open-code gro_normal_list() rather than exporting it for 2
reasons:
* to prevent from using it and napi_gro_flush() in any new drivers,
as it is the *really* bad way to use NAPI that should be avoided;
* to keep gro_normal_list() static and don't lose any CC optimizations.
I also don't add the "Fixes:" tag as the mentioned commit was only a
trigger that only exposed an improper usage of NAPI in this particular
driver.
Signed-off-by: Alexander Lobakin <alobakin@dlink.ru> Acked-by: Luca Coelho <luciano.coelho@intel.com> Reported-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au> Tested-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au> Reviewed-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 27 Nov 2019 19:06:20 +0000 (11:06 -0800)]
Merge tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of driver core patches for 5.5-rc1
There's a few minor cleanups and fixes in here, but the majority of
the patches in here fall into two buckets:
- debugfs api cleanups and fixes
- driver core device link support for boot dependancy issues
The debugfs api cleanups are working to slowly refactor the debugfs
apis so that it is even harder to use incorrectly. That work has been
happening for the past few kernel releases and will continue over
time, it's a long-term project/goal
The driver core device link support missed 5.4 by just a bit, so it's
been sitting and baking for many months now. It's from Saravana Kannan
to help resolve the problems that DT-based systems have at boot time
with dependancy graphs and kernel modules. Turns out that no one has
actually tried to build a generic arm64 kernel with loads of modules
and have it "just work" for a variety of platforms (like a distro
kernel). The big problem turned out to be a lack of dependency
information between different areas of DT entries, and the work here
resolves that problem and now allows devices to boot properly, and
quicker than a monolith kernel.
All of these patches have been in linux-next for a long time with no
reported issues"
* tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (68 commits)
tracing: Remove unnecessary DEBUG_FS dependency
of: property: Add device link support for interrupt-parent, dmas and -gpio(s)
debugfs: Fix !DEBUG_FS debugfs_create_automount
of: property: Add device link support for "iommu-map"
of: property: Fix the semantics of of_is_ancestor_of()
i2c: of: Populate fwnode in of_i2c_get_board_info()
drivers: base: Fix Kconfig indentation
firmware_loader: Fix labels with comma for builtin firmware
driver core: Allow device link operations inside sync_state()
driver core: platform: Declare ret variable only once
cpu-topology: declare parse_acpi_topology in <linux/arch_topology.h>
crypto: hisilicon: no need to check return value of debugfs_create functions
driver core: platform: use the correct callback type for bus_find_device
firmware_class: make firmware caching configurable
driver core: Clarify documentation for fwnode_operations.add_links()
mailbox: tegra: Fix superfluous IRQ error message
net: caif: Fix debugfs on 64-bit platforms
mac80211: Use debugfs_create_xul() helper
media: c8sectpfe: no need to check return value of debugfs_create functions
of: property: Add device link support for iommus, mboxes and io-channels
...
Linus Torvalds [Wed, 27 Nov 2019 18:57:52 +0000 (10:57 -0800)]
Merge tag 'staging-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / iio updates from Greg KH:
"Here is the big staging and iio set of patches for the 5.5-rc1
release.
It's the usual huge collection of cleanup patches all over the
drivers/staging/ area, along with a new staging driver, and a bunch of
new IIO drivers as well.
Full details are in the shortlog, but all of these have been in
linux-next for a long time with no reported issues"
* tag 'staging-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (548 commits)
staging: vchiq: Have vchiq_dump_* functions return an error code
staging: vchiq: Refactor indentation in vchiq_dump_* functions
staging: fwserial: Fix Kconfig indentation (seven spaces)
staging: vchiq_dump: Replace min with min_t
staging: vchiq: Fix block comment format in vchiq_dump()
staging: octeon: indent with tabs instead of spaces
staging: comedi: usbduxfast: usbduxfast_ai_cmdtest rounding error
staging: most: core: remove sysfs attr remove_link
staging: vc04: Fix Kconfig indentation
staging: pi433: Fix Kconfig indentation
staging: nvec: Fix Kconfig indentation
staging: most: Fix Kconfig indentation
staging: fwserial: Fix Kconfig indentation
staging: fbtft: Fix Kconfig indentation
fbtft: Drop OF dependency
fbtft: Make use of device property API
fbtft: Drop useless #ifdef CONFIG_OF and dead code
fbtft: Describe function parameters in kernel-doc
fbtft: Make sure string is NULL terminated
staging: rtl8723bs: remove set but not used variable 'change', 'pos'
...
Linus Torvalds [Wed, 27 Nov 2019 18:53:50 +0000 (10:53 -0800)]
Merge tag 'char-misc-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char/misc and other driver patches for 5.5-rc1
Loads of different things in here, this feels like the catch-all of
driver subsystems these days. Full details are in the shortlog, but
nothing major overall, just lots of driver updates and additions.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (198 commits)
char: Fix Kconfig indentation, continued
habanalabs: add more protection of device during reset
habanalabs: flush EQ workers in hard reset
habanalabs: make the reset code more consistent
habanalabs: expose reset counters via existing INFO IOCTL
habanalabs: make code more concise
habanalabs: use defines for F/W files
habanalabs: remove prints on successful device initialization
habanalabs: remove unnecessary checks
habanalabs: invalidate MMU cache only once
habanalabs: skip VA block list update in reset flow
habanalabs: optimize MMU unmap
habanalabs: prevent read/write from/to the device during hard reset
habanalabs: split MMU properties to PCI/DRAM
habanalabs: re-factor MMU masks and documentation
habanalabs: type specific MMU cache invalidation
habanalabs: re-factor memory module code
habanalabs: export uapi defines to user-space
habanalabs: don't print error when queues are full
habanalabs: increase max jobs number to 512
...
David S. Miller [Wed, 27 Nov 2019 18:53:37 +0000 (10:53 -0800)]
Merge branch 'mscc-skb-lists'
Yangbo Lu says:
====================
net: mscc: ocelot: fix potential issues accessing skbs list
Fix two prtential issues accessing skbs list.
- Break the matching loop when find the matching skb to avoid
consuming more skbs incorrectly. The timestamp ID is only
from 0 to 3 while the FIFO supports 128 timestamps at most.
- Convert to use skb queue instead of the list of skbs to provide
protect with lock.
Changes for v2:
- Split into two patches.
- Converted to use skb queue.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Yangbo Lu [Wed, 27 Nov 2019 07:27:56 +0000 (15:27 +0800)]
net: mscc: ocelot: avoid incorrect consuming in skbs list
Break the matching loop when find the matching skb for TX timestamp.
This is to avoid consuming more skbs incorrectly. The timestamp ID
is from 0 to 3 while the FIFO could support 128 timestamps at most.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 27 Nov 2019 18:46:34 +0000 (10:46 -0800)]
Merge tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH:
"Here is the big set of USB patches for 5.5-rc1
Lots of little things in here:
- typec updates and additions
- usb-serial drivers cleanups and fixes
- misc USB drivers cleanups and fixes
- gadget drivers new features and controllers added
- usual xhci additions
- other minor changes
All of these have been in linux-next with no reported issues"
* tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (223 commits)
usb: gadget: udc: gr_udc: create debugfs directory under usb root
usb: gadget: atmel: create debugfs directory under usb root
usb: musb: create debugfs directory under usb root
usb: serial: Fix Kconfig indentation
usb: misc: Fix Kconfig indentation
usb: gadget: Fix Kconfig indentation
usb: host: Fix Kconfig indentation
usb: dwc3: Fix Kconfig indentation
usb: gadget: configfs: Fix missing spin_lock_init()
usb-storage: Disable UAS on JMicron SATA enclosure
USB: documentation: flags on usb-storage versus UAS
USB: uas: heed CAPACITY_HEURISTICS
USB: uas: honor flag to avoid CAPACITY16
usb: host: xhci-tegra: Correct phy enable sequence
usb-serial: cp201x: support Mark-10 digital force gauge
usb: chipidea: imx: pinctrl for HSIC is optional
usb: chipidea: imx: refine the error handling for hsic
usb: chipidea: imx: change hsic power regulator as optional
usb: chipidea: imx: check data->usbmisc_data against NULL before access
usb: chipidea: core: change vbus-regulator as optional
...
Linus Torvalds [Wed, 27 Nov 2019 18:17:28 +0000 (10:17 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Again another fairly quiet cycle with few notable core code changes
and the usual variety of driver bug fixes and small improvements.
- Various driver updates and bug fixes for siw, bnxt_re, hns, qedr,
iw_cxgb4, vmw_pvrdma, mlx5
- Improvements in SRPT from working with iWarp
- SRIOV VF support for bnxt_re
- Skeleton kernel-doc files for drivers/infiniband
- User visible counters for events related to ODP
- Common code for tracking of mmap lifetimes so that drivers can link
HW object liftime to a VMA
- ODP bug fixes and rework
- RDMA READ support for efa
- Removal of the very old cxgb3 driver"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (168 commits)
RDMA/hns: Delete unnecessary callback functions for cq
RDMA/hns: Rename the functions used inside creating cq
RDMA/hns: Redefine the member of hns_roce_cq struct
RDMA/hns: Redefine interfaces used in creating cq
RDMA/efa: Expose RDMA read related attributes
RDMA/efa: Support remote read access in MR registration
RDMA/efa: Store network attributes in device attributes
IB/hfi1: remove redundant assignment to variable ret
RDMA/bnxt_re: Fix missing le16_to_cpu
RDMA/bnxt_re: Fix stat push into dma buffer on gen p5 devices
RDMA/bnxt_re: Fix chip number validation Broadcom's Gen P5 series
RDMA/bnxt_re: Fix Kconfig indentation
IB/mlx5: Implement callbacks for getting VFs GUID attributes
IB/ipoib: Add ndo operation for getting VFs GUID attributes
IB/core: Add interfaces to get VF node and port GUIDs
net/core: Add support for getting VF GUIDs
RDMA/qedr: Fix null-pointer dereference when calling rdma_user_mmap_get_offset
RDMA/cm: Use refcount_t type for refcount variable
IB/mlx5: Support extended number of strides for Striding RQ
IB/mlx4: Update HW GID table while adding vlan GID
...
Linus Torvalds [Wed, 27 Nov 2019 18:03:52 +0000 (10:03 -0800)]
Merge tag 'mmc-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"These are the updates for MMC and MEMSTICK for v5.5.
Note that this also contains quite some additional changes reaching
beyond both the MMC and MEMSTICK subsystems. This is primarily because
of fixing an old regression for a WiFi driver based on the SDIO
interface on an OMAP openpandora board
MMC core:
- Add CMD13 polling for MMC IOCTLS with R1B response.
- Add common DT properties for clk-phase-delays for various speed
modes.
- Fix size overflow for mmc gp-partitions.
- Re-work HW reset for SDIO cards, which also includes a re-work for
Marvell's WiFi mwifiex SDIO func driver.
MMC host:
- jz4740: Add support for X1000 and JZ4760.
- jz4740: Add support for 8-bit bus and for low power mode.
- mmci: Add support for HW busy timeout for the stm32_sdmmc variant.
- owl-mmc: Add driver for Actions Semi Owl SoCs SD/MMC controller.
- renesas_sdhi: Add support for r8a774b1.
- sdhci_am654: Add support for Command Queuing Engine for J721E.
- sdhci-milbeaut: Add driver for the Milbeaut SD controller.
- sdhci-of-arasan: Add support for ZynqMP tap-delays.
- sdhci-of-arasan: Add support for clk-phase-delays for SD cards.
- sdhci-of-arasan: Add support for Intel LGM SDXC.
- sdhci-of-aspeed: Allow inversion of the internal card detect
signal.
- sdhci-of-esdhc: Fixup workaround for erratum A-008171 for tunings.
- sdhci-of-at91: Improve support for calibration.
- sdhci-pci: Add support for Intel JSL.
- sdhci-pci: Add quirk for AMD SDHC Device 0x7906.
- tmio: Enable support for erase/discard/trim requests.
MMC/OMAP/pandora/wl1251:
The TI wl1251 WiFi driver for SDIO on the OMAP openpandora board has
been broken since v4.7. To fix the problems, changes have been made
cross subsystems, but also to OMAP2 machine code and to openpandora
DTS files, as summarized below. Relevant changes have been tagged for
stable.
- mmc/wl1251: Re-introduce lost SDIO quirks and vendor-id for wl1251
- omap/omap_hsmmc: Remove redundant platform config for openpandora
- omap_hsmmc: Initialize non-std SDIO card for wl1251 for pandora
- omap/dts/pandora: Specify wl1251 through a child node of mmc3
- wl1251: Add devicetree support for TI wl1251 SDIO"
* tag 'mmc-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (73 commits)
dt-bindings: mmc: Correct the type of the clk phase properties
Revert "mmc: tmio: remove workaround for NON_REMOVABLE"
memstick: Fix Kconfig indentation
mmc: sdhci-of-arasan: Add support for ZynqMP Platform Tap Delays Setup
dt-bindings: mmc: arasan: Document 'xlnx,zynqmp-8.9a' controller
firmware: xilinx: Add SDIO Tap Delay nodes
mmc: sdhci-of-arasan: Add support to set clock phase delays for SD
dt-bindings: mmc: Add optional generic properties for mmc
mmc: sdhci-of-arasan: Add sampling clock for a phy to use
dt-bindings: mmc: arasan: Update Documentation for the input clock
mmc: sdhci-of-arasan: Separate out clk related data to another structure
mmc: sdhci: Fix grammar in warning message
mmc: sdhci-of-aspeed: add inversion signal presence
mmc: sdhci-of-aspeed: enable CONFIG_MMC_SDHCI_IO_ACCESSORS
mmc: sdhci_am654: Add Support for Command Queuing Engine to J721E
mmc: core: Fix size overflow for mmc partitions
mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests
net: wireless: ti: remove local VENDOR_ID and DEVICE_ID definitions
net: wireless: ti: wl1251 use new SDIO_VENDOR_ID_TI_WL1251 definition
mmc: core: fix wl1251 sdio quirks
...
Linus Torvalds [Wed, 27 Nov 2019 18:00:33 +0000 (10:00 -0800)]
Merge tag 'pinctrl-v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for v5.5.
It is pretty much business as usual, the most interesting thing I
think is the pin controller for a new Intel chip called Lightning
Mountain, which is according to news reports some kind of embedded
network processor and what is surprising about it is that Intel have
decided to use device tree to describe the system rather than ACPI
that they have traditionally favored.
Core changes:
- Avoid taking direct references to device tree-supplied device
names: these may changed at runtime under certain circumstances to
kstrdup them.
GPIO related:
- Work is ongoing to move to passing the irqchip along as a templated
struct gpio_irq_chip when adding a standard gpiolib-based irqchip
to a GPIO controller, a few patches in this cycle switches a few
pin control drivers over to using this method.
New hardware support:
- Intel Lightning Mountain SoC pin controller and GPIO support, a
first Intel platform to use device tree rather than ACPI to
configure the system. News reports says that this SoC is a network
processor.
- Qualcomm MSM8976 and MSM8956
- Qualcomm PMIC GPIO now also supports PM6150 and PM6150L
- Qualcomm SPMI MPP and SPMI GPIO for PM8950 and PMI8950
- Rockchip RK3308
- Renesas R8A77961
- Allwinner Meson-A1
Driver improvements:
- get_multiple and set_multiple support for the AT91-PIO4 driver.
- Convert Qualcomm SSBI GPIO to use the hierarchical IRQ helpers in
the GPIOlib irqchip"
* tag 'pinctrl-v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (93 commits)
pinctrl: ingenic: Add OTG VBUS pin for the JZ4770
pinctrl: ingenic: Handle PIN_CONFIG_OUTPUT config
pinctrl: Fix Kconfig indentation
pinctrl: lewisburg: Update pin list according to v1.1v6
MAINTAINERS: Replace my email by one @kernel.org
pinctrl: armada-37xx: Fix irq mask access in armada_37xx_irq_set_type()
dt-bindings: pinctrl: intel: Add for new SoC
pinctrl: Add pinmux & GPIO controller driver for a new SoC
pinctrl: rza1: remove unnecessary static inline function
pinctrl: meson: add pinctrl driver support for Meson-A1 SoC
pinctrl: meson: add a new callback for SoCs fixup
pinctrl: nomadik: db8500: Add mc0_a_2 pin group without direction control
dt-bindings: pinctrl: Convert generic pin mux and config properties to schema
pinctrl: cherryview: Missed type change to unsigned int
pinctrl: intel: Missed type change to unsigned int
pinctrl: use devm_platform_ioremap_resource() to simplify code
pinctrl: just return if no valid maps
dt-bindings: pinctrl: qcom-pmic-mpp: Add support for PM/PMI8950
pinctrl: qcom: spmi-mpp: Add PM/PMI8950 compatible strings
dt-bindings: pinctrl: qcom-pmic-gpio: Add support for PM/PMI8950
...
Linus Torvalds [Wed, 27 Nov 2019 17:55:39 +0000 (09:55 -0800)]
Merge tag 'for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- test_power: add support for current and charge_counter
- cpcap-charger: improve charge calculation and limit default charge
voltage
- ab8500: convert to IIO
- misc small fixes all over drivers
* tag 'for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (29 commits)
power: supply: bd70528: Add MODULE_ALIAS to allow module auto loading
power: supply: ab8500_charger: Fix inconsistent IS_ERR and PTR_ERR
power: supply: cpcap-charger: cpcap_charger_voltage_to_regval() can be static
power: supply: cpcap-battery: Add basic coulomb counter calibrate support
power: supply: cpcap-battery: Read and save integrator register CCI
power: supply: cpcap-battery: Simplify short term power average calculation
power: supply: cpcap-battery: Simplify coulomb counter calculation with div_s64
power: supply: cpcap-battery: Move coulomb counter units per lsb to ddata
power: supply: cpcap-charger: Allow changing constant charge voltage
power: supply: cpcap-battery: Fix handling of lowered charger voltage
power: supply: cpcap-charger: Improve battery detection
power: supply: cpcap-battery: Check voltage before orderly_poweroff
power: supply: cpcap-charger: Limit voltage to 4.2V for battery
power: supply: ab8500: Handle invalid IRQ from platform_get_irq_byname()
power: supply: ab8500_fg: Do not free non-requested IRQs in probe's error path
power: supply: ab8500: Cleanup probe in reverse order
power: reset: at91: fix __le32 cast in reset code
power: supply: abx500_chargalg: Fix code indentation
mfd: Switch the AB8500 GPADC to IIO
iio: adc: New driver for the AB8500 GPADC
...
Michael Ellerman [Wed, 27 Nov 2019 07:41:26 +0000 (18:41 +1100)]
powerpc: Define arch_is_kernel_initmem_freed() for lockdep
Under certain circumstances, we hit a warning in lockdep_register_key:
if (WARN_ON_ONCE(static_obj(key)))
return;
This occurs when the key falls into initmem that has since been freed
and can now be reused. This has been observed on boot, and under
memory pressure.
Define arch_is_kernel_initmem_freed(), which allows lockdep to
correctly identify this memory as dynamic.
This fixes a bug picked up by the powerpc64 syzkaller instance where
we hit the WARN via alloc_netdev_mqs.
Reported-by: Qian Cai <cai@lca.pw> Reported-by: ppc syzbot c/o Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Daniel Axtens <dja@axtens.net> Link: https://lore.kernel.org/r/87lfs4f7d6.fsf@dja-thinkpad.axtens.net
Linus Torvalds [Wed, 27 Nov 2019 04:11:43 +0000 (20:11 -0800)]
Merge tag 'media/v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- uAPI documentation for stateless decoders
- Added a new CEC ioctl together with its documentation
- Improved IPU3 documentation
- New i2c drivers: hi556 and imx290
- Added support on Vivid driver for meta streams
- Added de-interlace support for sunxi subdriver
- Added a few new remote controler keymaps
- Added H.265 support for Sunxi Cedrus driver
- Another round of random driver cleanups, fixes and improvements
* tag 'media/v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (361 commits)
media: Revert "media: mtk-vcodec: Remove extra area allocation in an input buffer on encoding"
media: hantro: Set H264 FIELDPIC_FLAG_E flag correctly
media: hantro: Remove now unused H264 pic_size
media: hantro: Use output buffer width and height for H264 decoding
media: hantro: Reduce H264 extra space for motion vectors
media: hantro: Fix H264 motion vector buffer offset
media: ti-vpe: vpe: fix compatible to match bindings
media: dt-bindings: media: ti-vpe: Document VPE driver
media: zr364xx: remove redundant assigmnent to idx, clean up code
media: Documentation: media: *_DEFAULT targets for subdevs
media: hantro: Fix s_fmt for dynamic resolution changes
media: i2c: Use the correct style for SPDX License Identifier
media: siano: Use the correct style for SPDX License Identifier
media: vicodec: media_device_cleanup was called too early
media: vim2m: media_device_cleanup was called too early
media: cedrus: Increase maximum supported size
media: cedrus: Fix H264 4k support
media: cedrus: Properly signal size in mode register
media: v4l2-ctrl: Lock main_hdl on operations of requests_queued.
media: si470x-i2c: add missed operations in remove
...
Linus Torvalds [Wed, 27 Nov 2019 04:04:35 +0000 (20:04 -0800)]
Merge tag 'sound-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There have been some significant changes in the core side, both for
ALSA and ASoC, while lots of development have been seen in SOF, as
well as many small fixes/improvements for ASoC codecs and platforms.
Below is a highlight in this cycle:
Core:
- The unification of PCM vmalloc buffer allocation helpers into the
standard API
- Clean up of the default PCM mmap handling for vmalloc & SG-buffer
- Fix potential races at ALSA timer open
- A few new PCM API extensions; just preliminary core changes, the
actual changes in drivers will be merged in 5.6
- Continued ASoC componentization works; now almost everything is a
common ASoC component object. A lot of refactoring and
simplification have been done along with it.
ASoC:
- Many fixes to the Sound Open Firmware (SOF) code
- Wake on voice support for Chromebooks
- SPI support and trigger word detection for RT5677
- New drivers for Analog Devices ADAU7118, Intel Cannonlake systems
with RT1011 and RT5682, Texas Instruments TAS2562 and TAS2770
HD-audio:
- Improved Intel DSP configuration / probe code for SOF
- Plumbing the legacy HD-audio driver with Intel SOF HDMI
- DP-MST support for Nvidia HDMI codecs
- Realtek quirks cleanups and new additions as usual
Others:
- Lots of refactoring and cleanups for FireWire; period-size sharing,
h/w IRQ interval configuration, clock recovery improvements, etc
- USB-audio: Scarlett mixer quirks
- Cleanups of PCM calls in various drivers (including media and USB)
to adapt the core API changes"
* tag 'sound-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (497 commits)
ALSA: usb-audio: Fix Focusrite Scarlett 6i6 gen1 - input handling
ALSA: hda/realtek - Enable internal speaker of ASUS UX431FLC
ALSA: aloop: Fix dependency on timer API
ASoC: DMI long name - avoid to add board name if matches with product name
ASoC: improve the DMI long card code in asoc-core
ASoC: rsnd: fix DALIGN register for SSIU
ALSA: aloop: Avoid unexpected timer event callback tasklets
ALSA: aloop: Remove redundant locking in timer open function
ASoC: component: Add sync_stop PCM ops
ASoC: pcm: Make ioctl ops optional
ALSA: hda/hdmi - Clear codec->relaxed_resume flag at unbinding
ALSA: hda - Disable audio component for legacy Nvidia HDMI codecs
ALSA: cs4236: fix error return comparison of an unsigned integer
ALSA: usb-audio: Fix NULL dereference at parsing BADD
ALSA: usb-audio: Fix Scarlett 6i6 Gen 2 port data
ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop
ALSA: hda/realtek - Move some alc236 pintbls to fallback table
ALSA: hda/realtek - Move some alc256 pintbls to fallback table
ALSA: docs: Update about the new PCM sync_stop ops
ALSA: pcm: Add card sync_irq field
...
Linus Torvalds [Wed, 27 Nov 2019 03:45:12 +0000 (19:45 -0800)]
Merge tag 'devprop-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki:
"Add support for printing fwnode names using a new conversion specifier
"%pfw" (Sakari Ailus), clean up the software node and
efi/apple-properties code in preparation for improved software node
reference properties handling (Dmitry Torokhov) and fix the struct
fwnode_operations description (Heikki Krogerus)"
* tag 'devprop-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (22 commits)
software node: simplify property_entry_read_string_array()
software node: unify PROPERTY_ENTRY_XXX macros
software node: remove property_entry_read_uNN_array functions
software node: get rid of property_set_pointer()
software node: clean up property_copy_string_array()
software node: mark internal macros with double underscores
efi/apple-properties: use PROPERTY_ENTRY_U8_ARRAY_LEN
software node: introduce PROPERTY_ENTRY_XXX_ARRAY_LEN()
software node: remove DEV_PROP_MAX
device property: Fix the description of struct fwnode_operations
lib/test_printf: Add tests for %pfw printk modifier
lib/vsprintf: Add %pfw conversion specifier for printing fwnode names
lib/vsprintf: OF nodes are first and foremost, struct device_nodes
lib/vsprintf: Make use of fwnode API to obtain node names and separators
lib/vsprintf: Add a note on re-using %pf or %pF
lib/vsprintf: Remove support for %pF and %pf in favour of %pS and %ps
device property: Add a function to obtain a node's prefix
device property: Add fwnode_get_name for returning the name of a node
device property: Add functions for accessing node's parents
device property: Move fwnode_get_parent() up
...
Linus Torvalds [Wed, 27 Nov 2019 03:25:25 +0000 (19:25 -0800)]
Merge tag 'acpi-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA code in the kernel to upstream revision 20191018, add support for EFI specific purpose memory, update the ACPI
EC driver to make it work on systems with hardware-reduced ACPI,
improve ACPI-based device enumeration for some platforms, rework the
lid blacklist handling in the button driver and add more lid quirks to
it, unify ACPI _HID/_UID matching, fix assorted issues and clean up
the code and documentation.
Specifics:
- Update the ACPICA code in the kernel to upstream revision 20191018
including:
* Fixes for Clang warnings (Bob Moore)
* Fix for possible overflow in get_tick_count() (Bob Moore)
* Introduction of acpi_unload_table() (Bob Moore)
* Debugger and utilities updates (Erik Schmauss)
* Fix for unloading tables loaded via configfs (Nikolaus Voss)
- Add support for EFI specific purpose memory to optionally allow
either application-exclusive or core-kernel-mm managed access to
differentiated memory (Dan Williams)
- Fix and clean up processing of the HMAT table (Brice Goglin, Qian
Cai, Tao Xu)
- Update the ACPI EC driver to make it work on systems with
hardware-reduced ACPI (Daniel Drake)
- Always build in support for the Generic Event Device (GED) to allow
one kernel binary to work both on systems with full hardware ACPI
and hardware-reduced ACPI (Arjan van de Ven)
- Fix the table unload mechanism to unregister platform devices
created when the given table was loaded (Andy Shevchenko)
- Rework the lid blacklist handling in the button driver and add more
lid quirks to it (Hans de Goede)
- Improve ACPI-based device enumeration for some platforms based on
Intel BayTrail SoCs (Hans de Goede)
- Add an OpRegion driver for the Cherry Trail Crystal Cove PMIC and
prevent handlers from being registered for unhandled PMIC OpRegions
(Hans de Goede)
- Unify ACPI _HID/_UID matching (Andy Shevchenko)
- Clean up documentation and comments (Cao jin, James Pack, Kacper
Piwiński)"
* tag 'acpi-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
ACPI: OSI: Shoot duplicate word
ACPI: HMAT: use %u instead of %d to print u32 values
ACPI: NUMA: HMAT: fix a section mismatch
ACPI: HMAT: don't mix pxm and nid when setting memory target processor_pxm
ACPI: NUMA: HMAT: Register "soft reserved" memory as an "hmem" device
ACPI: NUMA: HMAT: Register HMAT at device_initcall level
device-dax: Add a driver for "hmem" devices
dax: Fix alloc_dax_region() compile warning
lib: Uplevel the pmem "region" ida to a global allocator
x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP
arm/efi: EFI soft reservation to memblock
x86/efi: EFI soft reservation to E820 enumeration
efi: Common enable/disable infrastructure for EFI soft reservation
x86/efi: Push EFI_MEMMAP check into leaf routines
efi: Enumerate EFI_MEMORY_SP
ACPI: NUMA: Establish a new drivers/acpi/numa/ directory
ACPICA: Update version to 20191018
ACPICA: debugger: remove leading whitespaces when converting a string to a buffer
ACPICA: acpiexec: initialize all simple types and field units from user input
ACPICA: debugger: add field unit support for acpi_db_get_next_token
...
Linus Torvalds [Wed, 27 Nov 2019 03:06:44 +0000 (19:06 -0800)]
Merge tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These include cpuidle changes to use nanoseconds (instead of
microseconds) as the unit of time and to simplify checks for disabled
idle states in the idle loop, some cpuidle fixes and governor updates,
assorted cpufreq updates (driver updates mostly and a few core fixes
and cleanups), devfreq updates (dominated by the tegra30 driver
changes), new CPU IDs for the RAPL power capping driver, relatively
minor updates of the generic power domains (genpd) and operation
performance points (OPP) frameworks, and assorted fixes and cleanups.
There are also two maintainer information updates: Chanwoo Choi will
be maintaining the devfreq subsystem going forward and Todd Brandt is
going to maintain the pm-graph utility (created by him).
Specifics:
- Use nanoseconds (instead of microseconds) as the unit of time in
the cpuidle core and simplify checks for disabled idle states in
the idle loop (Rafael Wysocki)
- Fix and clean up the teo cpuidle governor (Rafael Wysocki)
- Fix the cpuidle registration error code path (Zhenzhong Duan)
- Avoid excessive vmexits in the ACPI cpuidle driver (Yin Fengwei)
- Extend the idle injection infrastructure to be able to measure the
requested duration in nanoseconds and to allow an exit latency
limit for idle states to be specified (Daniel Lezcano)
- Fix cpufreq driver registration and clarify a comment in the
cpufreq core (Viresh Kumar)
- Add NULL checks to the show() and store() methods of sysfs
attributes exposed by cpufreq (Kai Shen)
- Update cpufreq drivers:
* Fix for a plain int as pointer warning from sparse in
intel_pstate (Jamal Shareef)
* Fix for a hardcoded number of CPUs and stack bloat in the
powernv driver (John Hubbard)
* Updates to the ti-cpufreq driver and DT files to support new
platforms and migrate bindings from opp-v1 to opp-v2 (Adam Ford,
H. Nikolaus Schaller)
* Merging of the arm_big_little and vexpress-spc drivers and
related cleanup (Sudeep Holla)
* Fix for imx's default speed grade value (Anson Huang)
* Minor cleanup of the s3c64xx driver (Nathan Chancellor)
* CPU speed bin detection fix for sun50i (Ondrej Jirman)
- Appoint Chanwoo Choi as the new devfreq maintainer.
- Update the devfreq core:
* Check NULL governor in available_governors_show sysfs to prevent
showing wrong governor information and fix a race condition
between devfreq_update_status() and trans_stat_show() (Leonard
Crestez)
* Add new 'interrupt-driven' flag for devfreq governors to allow
interrupt-driven governors to prevent the devfreq core from
polling devices for status (Dmitry Osipenko)
* Improve an error message in devfreq_add_device() (Matthias
Kaehlcke)
- Update devfreq drivers:
* tegra30 driver fixes and cleanups (Dmitry Osipenko)
* Removal of unused property from dt-binding documentation for the
exynos-bus driver (Kamil Konieczny)
* exynos-ppmu cleanup and DT bindings update (Lukasz Luba, Marek
Szyprowski)
- Add new CPU IDs for CometLake Mobile and Desktop to the Intel RAPL
power capping driver (Zhang Rui)
- Allow device initialization in the generic power domains (genpd)
framework to be more straightforward and clean it up (Ulf Hansson)
- Add support for adjusting OPP voltages at run time to the OPP
framework (Stephen Boyd)
- Avoid freeing memory that has never been allocated in the
hibernation core (Andy Whitcroft)
- Clean up function headers in a header file and coding style in the
wakeup IRQs handling code (Ulf Hansson, Xiaofei Tan)
- Clean up the SmartReflex adaptive voltage scaling (AVS) driver for
ARM (Ben Dooks, Geert Uytterhoeven)
- Wrap power management documentation to fit in 80 columns (Bjorn
Helgaas)
- Add pm-graph utility entry to MAINTAINERS (Todd Brandt)
- Update the cpupower utility:
* Fix the handling of set and info subcommands (Abhishek Goel)
* Fix build warnings (Nathan Chancellor)
* Improve mperf_monitor handling (Janakarajan Natarajan)"
* tag 'pm-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits)
PM: Wrap documentation to fit in 80 columns
cpuidle: Pass exit latency limit to cpuidle_use_deepest_state()
cpuidle: Allow idle injection to apply exit latency limit
cpuidle: Introduce cpuidle_driver_state_disabled() for driver quirks
cpuidle: teo: Avoid code duplication in conditionals
cpufreq: Register drivers only after CPU devices have been registered
cpuidle: teo: Avoid using "early hits" incorrectly
cpuidle: teo: Exclude cpuidle overhead from computations
PM / Domains: Convert to dev_to_genpd_safe() in genpd_syscore_switch()
mmc: tmio: Avoid boilerplate code in ->runtime_suspend()
PM / Domains: Implement the ->start() callback for genpd
PM / Domains: Introduce dev_pm_domain_start()
ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition
PM / wakeirq: remove unnecessary parentheses
power: avs: smartreflex: Remove superfluous cast in debugfs_create_file() call
cpuidle: Use nanoseconds as the unit of time
PM / OPP: Support adjusting OPP voltages at runtime
PM / core: Clean up some function headers in power.h
cpufreq: Add NULL checks to show() and store() methods of cpufreq
cpufreq: intel_pstate: Fix plain int as pointer warning from sparse
...
Linus Torvalds [Wed, 27 Nov 2019 01:12:12 +0000 (17:12 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 merge fix from Ingo Molnar:
"I missed one other semantic conflict that can result in build failures
on certain stripped down x86 32-bit configs, for example 32-bit
'allnoconfig' where CONFIG_X86_IOPL_IOPERM gets turned off"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/iopl: Make 'struct tss_struct' constant size again
Linus Torvalds [Wed, 27 Nov 2019 00:02:40 +0000 (16:02 -0800)]
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"The main changes in this cycle were:
- A comprehensive rewrite of the robust/PI futex code's exit handling
to fix various exit races. (Thomas Gleixner et al)
- Rework the generic REFCOUNT_FULL implementation using
atomic_fetch_* operations so that the performance impact of the
cmpxchg() loops is mitigated for common refcount operations.
With these performance improvements the generic implementation of
refcount_t should be good enough for everybody - and this got
confirmed by performance testing, so remove ARCH_HAS_REFCOUNT and
REFCOUNT_FULL entirely, leaving the generic implementation enabled
unconditionally. (Will Deacon)
- Other misc changes, fixes, cleanups"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
lkdtm: Remove references to CONFIG_REFCOUNT_FULL
locking/refcount: Remove unused 'refcount_error_report()' function
locking/refcount: Consolidate implementations of refcount_t
locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions
locking/refcount: Move saturation warnings out of line
locking/refcount: Improve performance of generic REFCOUNT_FULL code
locking/refcount: Move the bulk of the REFCOUNT_FULL implementation into the <linux/refcount.h> header
locking/refcount: Remove unused refcount_*_checked() variants
locking/refcount: Ensure integer operands are treated as signed
locking/refcount: Define constants for saturation and max refcount values
futex: Prevent exit livelock
futex: Provide distinct return value when owner is exiting
futex: Add mutex around futex exit
futex: Provide state handling for exec() as well
futex: Sanitize exit state handling
futex: Mark the begin of futex exit explicitly
futex: Set task::futex_state to DEAD right after handling futex exit
futex: Split futex_mm_release() for exit/exec
exit/exec: Seperate mm_release()
futex: Replace PF_EXITPIDONE with a state
...
Jeroen de Borst [Tue, 26 Nov 2019 23:36:19 +0000 (15:36 -0800)]
gve: Fix the queue page list allocated pages count
In gve_alloc_queue_page_list(), when a page allocation fails,
qpl->num_entries will be wrong. In this case priv->num_registered_pages
can underflow in gve_free_queue_page_list(), causing subsequent calls
to gve_alloc_queue_page_list() to fail.
Fixes: 17b7b5dff8f1 ("gve: Add transmit and receive support") Signed-off-by: Jeroen de Borst <jeroendb@google.com> Reviewed-by: Catherine Sullivan <csully@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 26 Nov 2019 23:42:43 +0000 (15:42 -0800)]
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main changes in this cycle were:
- Dynamic tick (nohz) updates, perhaps most notably changes to force
the tick on when needed due to lengthy in-kernel execution on CPUs
on which RCU is waiting.
- Linux-kernel memory consistency model updates.
- Replace rcu_swap_protected() with rcu_prepace_pointer().
- Torture-test updates.
- Documentation updates.
- Miscellaneous fixes"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
security/safesetid: Replace rcu_swap_protected() with rcu_replace_pointer()
net/sched: Replace rcu_swap_protected() with rcu_replace_pointer()
net/netfilter: Replace rcu_swap_protected() with rcu_replace_pointer()
net/core: Replace rcu_swap_protected() with rcu_replace_pointer()
bpf/cgroup: Replace rcu_swap_protected() with rcu_replace_pointer()
fs/afs: Replace rcu_swap_protected() with rcu_replace_pointer()
drivers/scsi: Replace rcu_swap_protected() with rcu_replace_pointer()
drm/i915: Replace rcu_swap_protected() with rcu_replace_pointer()
x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace_pointer()
rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer()
rcu: Suppress levelspread uninitialized messages
rcu: Fix uninitialized variable in nocb_gp_wait()
rcu: Update descriptions for rcu_future_grace_period tracepoint
rcu: Update descriptions for rcu_nocb_wake tracepoint
rcu: Remove obsolete descriptions for rcu_barrier tracepoint
rcu: Ensure that ->rcu_urgent_qs is set before resched IPI
workqueue: Convert for_each_wq to use built-in list check
rcu: Several rcu_segcblist functions can be static
rcu: Remove unused function hlist_bl_del_init_rcu()
Documentation: Rename rcu_node_context_switch() to rcu_note_context_switch()
...
Linus Torvalds [Tue, 26 Nov 2019 23:23:14 +0000 (15:23 -0800)]
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The biggest changes in this cycle were:
- Make kcpustat vtime aware (Frederic Weisbecker)
- Rework the CFS load_balance() logic (Vincent Guittot)
- Misc cleanups, smaller enhancements, fixes.
The load-balancing rework is the most intrusive change: it replaces
the old heuristics that have become less meaningful after the
introduction of the PELT metrics, with a grounds-up load-balancing
algorithm.
As such it's not really an iterative series, but replaces the old
load-balancing logic with the new one. We hope there are no
performance regressions left - but statistically it's highly probable
that there *is* going to be some workload that is hurting from these
chnages. If so then we'd prefer to have a look at that workload and
fix its scheduling, instead of reverting the changes"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
rackmeter: Use vtime aware kcpustat accessor
leds: Use all-in-one vtime aware kcpustat accessor
cpufreq: Use vtime aware kcpustat accessors for user time
procfs: Use all-in-one vtime aware kcpustat accessor
sched/vtime: Bring up complete kcpustat accessor
sched/cputime: Support other fields on kcpustat_field()
sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util()
sched/fair: Add comments for group_type and balancing at SD_NUMA level
sched/fair: Fix rework of find_idlest_group()
sched/uclamp: Fix overzealous type replacement
sched/Kconfig: Fix spelling mistake in user-visible help text
sched/core: Further clarify sched_class::set_next_task()
sched/fair: Use mul_u32_u32()
sched/core: Simplify sched_class::pick_next_task()
sched/core: Optimize pick_next_task()
sched/core: Make pick_next_task_idle() more consistent
sched/fair: Better document newidle_balance()
leds: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM
cpufreq: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM
procfs: Use vtime aware kcpustat accessor to fetch CPUTIME_SYSTEM
...
Paolo Abeni [Tue, 26 Nov 2019 11:55:50 +0000 (12:55 +0100)]
openvswitch: fix flow command message size
When user-space sets the OVS_UFID_F_OMIT_* flags, and the relevant
flow has no UFID, we can exceed the computed size, as
ovs_nla_put_identifier() will always dump an OVS_FLOW_ATTR_KEY
attribute.
Take the above in account when computing the flow command message
size.
Fixes: 15345389e23c ("openvswitch: Add support for unique flow IDs.") Reported-by: Qi Jun Ding <qding@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 26 Nov 2019 23:04:47 +0000 (15:04 -0800)]
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"The main kernel side changes in this cycle were:
- Various Intel-PT updates and optimizations (Alexander Shishkin)
- Prohibit kprobes on Xen/KVM emulate prefixes (Masami Hiramatsu)
- Add support for LSM and SELinux checks to control access to the
perf syscall (Joel Fernandes)
- Misc other changes, optimizations, fixes and cleanups - see the
shortlog for details.
There were numerous tooling changes as well - 254 non-merge commits.
Here are the main changes - too many to list in detail:
- Enhancements to core tooling infrastructure, perf.data, libperf,
libtraceevent, event parsing, vendor events, Intel PT, callchains,
BPF support and instruction decoding.
- There were updates to the following tools:
perf annotate
perf diff
perf inject
perf kvm
perf list
perf maps
perf parse
perf probe
perf record
perf report
perf script
perf stat
perf test
perf trace
- And a lot of other changes: please see the shortlog and Git log for
more details"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (279 commits)
perf parse: Fix potential memory leak when handling tracepoint errors
perf probe: Fix spelling mistake "addrees" -> "address"
libtraceevent: Fix memory leakage in copy_filter_type
libtraceevent: Fix header installation
perf intel-bts: Does not support AUX area sampling
perf intel-pt: Add support for decoding AUX area samples
perf intel-pt: Add support for recording AUX area samples
perf pmu: When using default config, record which bits of config were changed by the user
perf auxtrace: Add support for queuing AUX area samples
perf session: Add facility to peek at all events
perf auxtrace: Add support for dumping AUX area samples
perf inject: Cut AUX area samples
perf record: Add aux-sample-size config term
perf record: Add support for AUX area sampling
perf auxtrace: Add support for AUX area sample recording
perf auxtrace: Move perf_evsel__find_pmu()
perf record: Add a function to test for kernel support for AUX area sampling
perf tools: Add kernel AUX area sampling definitions
perf/core: Make the mlock accounting simple again
perf report: Jump to symbol source view from total cycles view
...
Linus Torvalds [Tue, 26 Nov 2019 22:52:11 +0000 (14:52 -0800)]
Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
"The main changes in this cycle were:
- Wire up the EFI RNG code for x86. This enables an additional source
of entropy during early boot.
- Enable the TPM event log code on ARM platforms.
- Update Ard's email address"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: libstub/tpm: enable tpm eventlog function for ARM platforms
x86: efi/random: Invoke EFI_RNG_PROTOCOL to seed the UEFI RNG table
efi/random: use arch-independent efi_call_proto()
MAINTAINERS: update Ard's email address to @kernel.org
Dan Murphy [Tue, 26 Nov 2019 14:38:56 +0000 (08:38 -0600)]
net: phy: dp83869: Fix return paths to return proper values
Fix the return paths for all I/O operations to ensure
that the I/O completed successfully. Then pass the return
to the caller for further processing
Fixes: bf83518ffe90 ("net: phy: dp83869: Add TI dp83869 phy") Reported-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
We need to calculate the skb size correctly otherwise we risk triggering
skb_over_panic[1]. The issue is that data_len is added to the skb in a
nl attribute, but we don't account for its header size (nlattr 4 bytes)
and alignment. We account for it when calculating the total size in
the > PSAMPLE_MAX_PACKET_SIZE comparison correctly, but not when
allocating after that. The fix is simple - use nla_total_size() for
data_len when allocating.
To reproduce:
$ tc qdisc add dev eth1 clsact
$ tc filter add dev eth1 egress matchall action sample rate 1 group 1 trunc 129
$ mausezahn eth1 -b bcast -a rand -c 1 -p 129
< skb_over_panic BUG(), tail is 4 bytes past skb->end >
CC: Yotam Gigi <yotamg@mellanox.com> CC: Jiri Pirko <jiri@mellanox.com> CC: Jamal Hadi Salim <jhs@mojatatu.com> CC: Simon Horman <simon.horman@netronome.com> CC: Roopa Prabhu <roopa@cumulusnetworks.com> Fixes: ea4de37980fe ("net: Introduce psample, a new genetlink channel for packet sampling") Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jens Axboe [Tue, 26 Nov 2019 22:02:04 +0000 (15:02 -0700)]
io_uring: make poll->wait dynamically allocated
In the quest to bring io_kiocb down to 3 cachelines, this one does
the trick. Make the wait_queue_entry for the poll command come out
of kmalloc instead of embedding it in struct io_poll_iocb, as the
latter is the largest member of io_kiocb. Once we trim this down a
bit, we're back at a healthy 192 bytes for struct io_kiocb.
Jens Axboe [Tue, 26 Nov 2019 18:59:32 +0000 (11:59 -0700)]
io-wq: shrink io_wq_work a bit
Currently we're using 40 bytes for the io_wq_work structure, and 16 of
those is the doubly link list node. We don't need doubly linked lists,
we always add to tail to keep things ordered, and any other use case
is list traversal with deletion. For the deletion case, we can easily
support any node deletion by keeping track of the previous entry.
This shrinks io_wq_work to 32 bytes, and subsequently io_kiock from
io_uring to 216 to 208 bytes.
Jann Horn [Tue, 26 Nov 2019 18:10:20 +0000 (19:10 +0100)]
io-wq: fix handling of NUMA node IDs
There are several things that can go wrong in the current code on NUMA
systems, especially if not all nodes are online all the time:
- If the identifiers of the online nodes do not form a single contiguous
block starting at zero, wq->wqes will be too small, and OOB memory
accesses will occur e.g. in the loop in io_wq_create().
- If a node comes online between the call to num_online_nodes() and the
for_each_node() loop in io_wq_create(), an OOB write will occur.
- If a node comes online between io_wq_create() and io_wq_enqueue(), a
lookup is performed for an element that doesn't exist, and an OOB read
will probably occur.
Fix it by:
- using nr_node_ids instead of num_online_nodes() for the allocation size;
nr_node_ids is calculated by setup_nr_node_ids() to be bigger than the
highest node ID that could possibly come online at some point, even if
those nodes' identifiers are not a contiguous block
- creating workers for all possible CPUs, not just all online ones
This is basically what the normal workqueue code also does, as far as I can
tell.
Pavel Begunkov [Mon, 25 Nov 2019 20:14:38 +0000 (23:14 +0300)]
io_uring: store timeout's sqe->off in proper place
Timeouts' sequence offset (i.e. sqe->off) is stored in
req->submit.sequence under a false name. Keep it in timeout.data
instead. The unused space for sequence will be reclaimed in the
following patches.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Tue, 26 Nov 2019 00:04:13 +0000 (17:04 -0700)]
net: disallow ancillary data for __sys_{send,recv}msg_file()
Only io_uring uses (and added) these, and we want to disallow the
use of sendmsg/recvmsg for anything but regular data transfers.
Use the newly added prep helper to split the msghdr copy out from
the core function, to check for msg_control and msg_controllen
settings. If either is set, we return -EINVAL.
Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Mon, 25 Nov 2019 21:27:34 +0000 (14:27 -0700)]
net: separate out the msghdr copy from ___sys_{send,recv}msg()
This is in preparation for enabling the io_uring helpers for sendmsg
and recvmsg to first copy the header for validation before continuing
with the operation.
There should be no functional changes in this patch.
Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
net: port < inet_prot_sock(net) --> inet_port_requires_bind_service(net, port)
Note that the sysctl write accessor functions guarantee that:
net->ipv4.sysctl_ip_prot_sock <= net->ipv4.ip_local_ports.range[0]
invariant is maintained, and as such the max() in selinux hooks is actually spurious.
ie. even though
if (snum < max(inet_prot_sock(sock_net(sk)), low) || snum > high) {
per logic is the same as
if ((snum < inet_prot_sock(sock_net(sk)) && snum < low) || snum > high) {
it is actually functionally equivalent to:
if (snum < low || snum > high) {
which is equivalent to:
if (snum < inet_prot_sock(sock_net(sk)) || snum < low || snum > high) {
even though the first clause is spurious.
But we want to hold on to it in case we ever want to change what what
inet_port_requires_bind_service() means (for example by changing
it from a, by default, [0..1024) range to some sort of set).
Test: builds, git 'grep inet_prot_sock' finds no other references Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
ibmvnic: Harden device commands and queries
This patch series fixes some shortcomings with the current
VNIC device command implementation. The first patch fixes
the initialization of driver completion structures used
for device commands. Additionally, all waits for device
commands are bounded with a timeout in the event that the
device does not respond or becomes inoperable. Finally,
serialize queries to retain the integrity of device return
codes.
Changes in v2:
- included header comment for ibmvnic_wait_for_completion
- removed open-coded loop in patch 3/4, suggested by Jakub
- ibmvnic_wait_for_completion accepts timeout value in milliseconds
instead of jiffies
- timeout calculations cleaned up and completed before wait loop
- included missing mutex_destroy calls, suggested by Jakub
- included comment before mutex declaration
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Falcon [Mon, 25 Nov 2019 23:12:56 +0000 (17:12 -0600)]
ibmvnic: Serialize device queries
Provide some serialization for device CRQ commands
and queries to ensure that the shared variable used for
storing return codes is properly synchronized.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Falcon [Mon, 25 Nov 2019 23:12:55 +0000 (17:12 -0600)]
ibmvnic: Bound waits for device queries
Create a wrapper for wait_for_completion calls with additional
driver checks to ensure that the driver does not wait on a
disabled device. In those cases or if the device does not respond
in an extended amount of time, this will allow the driver an
opportunity to recover.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Falcon [Mon, 25 Nov 2019 23:12:53 +0000 (17:12 -0600)]
ibmvnic: Fix completion structure initialization
Fix multiple calls to init_completion for device completion
structures. Instead, initialize them during device probe and
reinitialize them later as needed.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net-sctp: replace some sock_net(sk) with just 'net'
It already existed in part of the function, but move it
to a higher level and use it consistently throughout.
Safe since sk is never written to.
Signed-off-by: Maciej Żenczykowski <maze@google.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: Fix a documentation bug wrt. ip_unprivileged_port_start
It cannot overlap with the local port range - ie. with autobind selectable
ports - and not with reserved ports.
Indeed 'ip_local_reserved_ports' isn't even a range, it's a (by default
empty) set.
Fixes: 6eb98b4f1505 ("Introduce a sysctl that modifies the value of PROT_SOCK.") Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
I was hoping it would be benign to switch over entirely to FMODE_STREAM,
and we'd have just a couple of small fixups we'd need, but it looks like
we're not quite there yet.
While it worked fine on both my desktop and laptop, they are fairly
similar in other respects, and run mostly the same loads. Kenneth
Crudup reports that it seems to break both his vmware installation and
the KDE upower service. In both cases apparently leading to timeouts
due to waitinmg for the f_pos lock.
There are a number of character devices in particular that definitely
want stream-like behavior, but that currently don't get marked as
streams, and as a result get the exclusion between concurrent
read()/write() on the same file descriptor. Which doesn't work well for
them.
The most obvious example if this is /dev/console and /dev/tty, which use
console_fops and tty_fops respectively (and ptmx_fops for the pty master
side). It may be that it's just this that causes problems, but we
clearly weren't ready yet.
Because there's a number of other likely common cases that don't have
llseek implementations and would seem to act as stream devices:
and while some of these could be trivially automatically detected by the
vfs layer when the character device is opened by just noticing that they
have no read or write operations either, it often isn't that obvious.
Some character devices most definitely do use the file position, even if
they don't allow seeking: the firmware update code, for example, uses
simple_read_from_buffer() that does use f_pos, but doesn't allow seeking
back and forth.
We'll revisit this when there's a better way to detect the problem and
fix it (possibly with a coccinelle script to do more of the FMODE_STREAM
annotations).
Linus Torvalds [Tue, 26 Nov 2019 19:12:02 +0000 (11:12 -0800)]
Merge branch 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 iopl updates from Ingo Molnar:
"This implements a nice simplification of the iopl and ioperm code that
Thomas Gleixner discovered: we can implement the IO privilege features
of the iopl system call by using the IO permission bitmap in
permissive mode, while trapping CLI/STI/POPF/PUSHF uses in user-space
if they change the interrupt flag.
This implements that feature, with testing facilities and related
cleanups"
[ "Simplification" may be an over-statement. The main goal is to avoid
the cli/sti of iopl by effectively implementing the IO port access
parts of iopl in terms of ioperm.
This may end up not workign well in case people actually depend on
cli/sti being available, or if there are mixed uses of iopl and
ioperm. We will see.. - Linus ]
* 'x86-iopl-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
x86/ioperm: Fix use of deprecated config option
x86/entry/32: Clarify register saving in __switch_to_asm()
selftests/x86/iopl: Extend test to cover IOPL emulation
x86/ioperm: Extend IOPL config to control ioperm() as well
x86/iopl: Remove legacy IOPL option
x86/iopl: Restrict iopl() permission scope
x86/iopl: Fixup misleading comment
selftests/x86/ioperm: Extend testing so the shared bitmap is exercised
x86/ioperm: Share I/O bitmap if identical
x86/ioperm: Remove bitmap if all permissions dropped
x86/ioperm: Move TSS bitmap update to exit to user work
x86/ioperm: Add bitmap sequence number
x86/ioperm: Move iobitmap data into a struct
x86/tss: Move I/O bitmap data into a seperate struct
x86/io: Speedup schedule out of I/O bitmap user
x86/ioperm: Avoid bitmap allocation if no permissions are set
x86/ioperm: Simplify first ioperm() invocation logic
x86/iopl: Cleanup include maze
x86/tss: Fix and move VMX BUILD_BUG_ON()
x86/cpu: Unify cpu_init()
...
Linus Torvalds [Tue, 26 Nov 2019 18:42:40 +0000 (10:42 -0800)]
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"The main changes in this cycle were:
- Cross-arch changes to move the linker sections for NOTES and
EXCEPTION_TABLE into the RO_DATA area, where they belong on most
architectures. (Kees Cook)
- Switch the x86 linker fill byte from x90 (NOP) to 0xcc (INT3), to
trap jumps into the middle of those padding areas instead of
sliding execution. (Kees Cook)
- A thorough cleanup of symbol definitions within x86 assembler code.
The rather randomly named macros got streamlined around a
(hopefully) straightforward naming scheme:
etc - with about three times of these basic primitives with some
label, local symbol or attribute variant, expressed via postfixes.
No change in functionality intended. (Jiri Slaby)
- Misc other changes, cleanups and smaller fixes"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (67 commits)
x86/entry/64: Remove pointless jump in paranoid_exit
x86/entry/32: Remove unused resume_userspace label
x86/build/vdso: Remove meaningless CFLAGS_REMOVE_*.o
m68k: Convert missed RODATA to RO_DATA
x86/vmlinux: Use INT3 instead of NOP for linker fill bytes
x86/mm: Report actual image regions in /proc/iomem
x86/mm: Report which part of kernel image is freed
x86/mm: Remove redundant address-of operators on addresses
xtensa: Move EXCEPTION_TABLE to RO_DATA segment
powerpc: Move EXCEPTION_TABLE to RO_DATA segment
parisc: Move EXCEPTION_TABLE to RO_DATA segment
microblaze: Move EXCEPTION_TABLE to RO_DATA segment
ia64: Move EXCEPTION_TABLE to RO_DATA segment
h8300: Move EXCEPTION_TABLE to RO_DATA segment
c6x: Move EXCEPTION_TABLE to RO_DATA segment
arm64: Move EXCEPTION_TABLE to RO_DATA segment
alpha: Move EXCEPTION_TABLE to RO_DATA segment
x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment
x86/vmlinux: Actually use _etext for the end of the text segment
vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA
...
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