Jan Höppner [Thu, 8 Oct 2020 13:13:35 +0000 (15:13 +0200)]
s390/dasd: Prepare for additional path event handling
As more path events need to be handled for ECKD the current path
verification infrastructure can be reused. Rename all path verifcation
code to fit the more broadly based task of path event handling and put
the path verification in a new separate function.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jan Höppner [Thu, 8 Oct 2020 13:13:34 +0000 (15:13 +0200)]
s390/dasd: Display FC Endpoint Security information via sysfs
Add a new sysfs attribute (fc_security) per device and per operational
channel path. The information of the current FC Endpoint Security state
is received through the CIO layer.
The state of the FC Endpoint Security can be either "Unsupported",
"Authentication", or "Encryption".
For example:
$ cat /sys/bus/ccw/devices/0.0.c600/fc_security
Encryption
If any of the operational paths is in a state different from all
others, the device sysfs attribute will display the additional state
"Inconsistent".
The sysfs attributes per paths are organised in a new directory called
"paths_info" with subdirectories for each path.
Jan Höppner [Thu, 8 Oct 2020 13:13:33 +0000 (15:13 +0200)]
s390/dasd: Fix operational path inconsistency
During online processing and setting up a DASD device, the configuration
data for operational paths is read and validated two times
(dasd_eckd_read_conf()). The first time to provide information that are
necessary for the LCU setup. A second time after the LCU setup as a
device might report different configuration data then.
When the configuration setup for each operational path is being
validated, an initial call to dasd_eckd_clear_conf_data() is issued.
This call wipes all previously available configuration data and path
information for each path.
However, the operational path mask is not updated during this process.
As a result, the stored operational path mask might no longer correspond
to the operational paths mask reported by the CIO layer, as several
paths might be gone between the two dasd_eckd_read_conf() calls.
This inconsistency leads to more severe issues in later path handling
changes. Fix this by removing the channel paths from the operational
path mask during the dasd_eckd_clear_conf_data() call.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jan Höppner [Thu, 8 Oct 2020 13:13:32 +0000 (15:13 +0200)]
s390/dasd: Store path configuration data during path handling
Currently, the configuration data for a path is retrieved during a path
verification and used only temporarily. If a path is newly added to the
I/O setup after a boot, no configuration data will be stored for this
particular path.
However, this data is required for later use and should be present for
a valid I/O path anyway. Store this data during the path verification so
that newly added paths can provide all information necessary.
[sth@linux.ibm.com: fix conf_data memleak]
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jan Höppner [Thu, 8 Oct 2020 13:13:31 +0000 (15:13 +0200)]
s390/dasd: Move duplicate code to separate function
For storing retrieved path information both the if and else block in
dasd_eckd_read_conf() use the same code. To avoid duplicate code this
should be done after the if/else block. To further increase readability,
move the code to a new function, dasd_eckd_store_conf_data().
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Vineeth Vijayan [Thu, 8 Oct 2020 13:13:29 +0000 (15:13 +0200)]
s390/cio: Add support for FCES status notification
Fibre Channel Endpoint-Security event is received as an sei:nt0 type
in the CIO layer. This information needs to be shared with the
CCW device drivers using the path_events callback.
Co-developed-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Acked-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Vineeth Vijayan [Thu, 8 Oct 2020 13:13:28 +0000 (15:13 +0200)]
s390/cio: Provide Endpoint-Security Mode per CU
Add an interface in the CIO layer to retrieve the information about the
Endpoint-Security Mode (ESM) of the specified CU. The ESM values are
defined as 0-None, 1-Authenticated or 2, 3-Encrypted.
[vneethv@linux.ibm.com: cleaned-up and modified description]
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Acked-by: Vasily Gorbik <gor@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Sebastian Ott [Thu, 8 Oct 2020 13:13:27 +0000 (15:13 +0200)]
s390/cio: Export information about Endpoint-Security Capability
Add a new sysfs attribute 'esc' per chpid. This new attribute exports
the Endpoint-Security-Capability byte of channel-path description block,
which could be 0-None, 1-Authentication, 2 and 3-Encryption.
For example:
$ cat /sys/devices/css0/chp0.34/esc
0
z2ram: use separate gendisk for the different modes
Use separate gendisks (which share a tag_set) for the different operating
modes instead of redirecting the gendisk lookup using a probe callback.
This avoids potential problems with aliased block_device instances and
will eventually allow for removing the blk_register_region framework.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
ataflop: use a separate gendisk for each media format
The Atari floppy driver usually autodetects the media when used with the
ormal /dev/fd? devices, which also are the only nodes created by udev.
But it also supports various aliases that force a given media format.
That is currently supported using the blk_register_region framework
which finds the floppy gendisk even for a 'mismatched' dev_t. The
problem with this (besides the code complexity) is that it creates
multiple struct block_device instances for the whole device of a
single gendisk, which can lead to interesting issues in code not
aware of that fact.
To fix this just create a separate gendisk for each of the aliases
if they are accessed.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
amiflop: use separate gendisks for Amiga vs MS-DOS mode
Use separate gendisks (which share a tag_set) for the native Amgiga vs
the MS-DOS mode instead of redirecting the gendisk lookup using a probe
callback. This avoids potential problems with aliased block_device
instances and will eventually allow for removing the blk_register_region
framework.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
floppy: use a separate gendisk for each media format
The floppy driver usually autodetects the media when used with the
normal /dev/fd? devices, which also are the only nodes created by udev.
But it also supports various aliases that force a given media format.
That is currently supported using the blk_register_region framework
which finds the floppy gendisk even for a 'mismatched' dev_t. The
problem with this (besides the code complexity) is that it creates
multiple struct block_device instances for the whole device of a
single gendisk, which can lead to interesting issues in code not
aware of that fact.
To fix this just create a separate gendisk for each of the aliases
if they are accessed.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
ide: switch to __register_blkdev for command set probing
ide is the last user of the blk_register_region framework except for the
tracking of allocated gendisk. Switch to __register_blkdev, even if that
doesn't allow us to trivially find out which command set to probe for.
That means we now always request all modules when a user tries to access
an unclaimed ide device node, but except for a few potentially loaded
modules for a fringe use case of a deprecated and soon to be removed
driver that doesn't make a difference.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
md: use __register_blkdev to allocate devices on demand
Use the simpler mechanism attached to major_name to allocate a md device
when a currently unregistered minor is accessed.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Song Liu <song@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
sd: use __register_blkdev to avoid a modprobe for an unregistered dev_t
Switch from using blk_register_region to the probe callback passed to
__register_blkdev to disable the request_module call for an unclaimed
dev_t in the SD majors.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
The swim driver (unlike various other floppy drivers) doesn't have
magic device nodes for certain modes, and already registers a gendisk
for each of the floppies supported by a device. Thus the region
registered is a no-op and can be removed.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
block: add an optional probe callback to major_names
Add a callback to the major_names array that allows a driver to override
how to probe for dev_t that doesn't currently have a gendisk registered.
This will help separating the lookup of the gendisk by dev_t vs probe
action for a not currently registered dev_t.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
block: rework requesting modules for unclaimed devices
Instead of reusing the ranges in bdev_map, add a new helper that is
called if no ranges was found. This is a first step to unpeel and
eventually remove the complex ranges structure.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a new method to allow for driver-specific processing when setting or
clearing the block device read-only state. This allows to replace the
cumbersome and error-prone override of the whole ioctl implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
BLKFLSBUF is not supposed to actually send a flush command to the device,
but to tear down buffer cache structures. Remove the mtd_blkdevs
implementation and just use the default semantics instead.
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Richard Weinberger <richard@nod.at> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Sun, 15 Nov 2020 21:07:36 +0000 (13:07 -0800)]
Merge tag 'drm-fixes-2020-11-16' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Nouveau fixes:
- atomic modesetting regression fix
- ttm pre-nv50 fix
- connector NULL ptr deref fix"
* tag 'drm-fixes-2020-11-16' of git://anongit.freedesktop.org/drm/drm:
drm/nouveau/kms/nv50-: Use atomic encoder callbacks everywhere
drm/nouveau/ttm: avoid using nouveau_drm.ttm.type_vram prior to nv50
drm/nouveau/kms: Fix NULL pointer dereference in nouveau_connector_detect_depth
Linus Torvalds [Sun, 15 Nov 2020 18:15:17 +0000 (10:15 -0800)]
Merge tag 'char-misc-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc/whatever driver fixes for 5.10-rc4.
Nothing huge, lots of small fixes for reported issues:
- habanalabs driver fixes
- speakup driver fixes
- uio driver fixes
- virtio driver fix
- other tiny driver fixes
Full details are in the shortlog.
All of these have been in linux-next for a full week with no reported
issues"
* tag 'char-misc-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
uio: Fix use-after-free in uio_unregister_device()
firmware: xilinx: fix out-of-bounds access
nitro_enclaves: Fixup type and simplify logic of the poll mask setup
speakup ttyio: Do not schedule() in ttyio_in_nowait
speakup: Fix clearing selection in safe context
speakup: Fix var_id_t values and thus keymap
virtio: virtio_console: fix DMA memory allocation for rproc serial
habanalabs/gaudi: mask WDT error in QMAN
habanalabs/gaudi: move coresight mmu config
habanalabs: fix kernel pointer type
mei: protect mei_cl_mtu from null dereference
Linus Torvalds [Sun, 15 Nov 2020 18:02:41 +0000 (10:02 -0800)]
Merge tag 'usb-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB and Thunderbolt fixes from Greg KH:
"Here are some small Thunderbolt and USB driver fixes for 5.10-rc4 to
solve some reported issues.
Nothing huge in here, just small things:
- thunderbolt memory leaks fixed and new device ids added
- revert of problem patch for the musb driver
- new quirks added for USB devices
- typec power supply fixes to resolve much reported problems about
charging notifications not working anymore
All except the cdc-acm driver quirk addition have been in linux-next
with no reported issues (the quirk patch was applied on Friday, and is
self-contained)"
* tag 'usb-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode
MAINTAINERS: add usb raw gadget entry
usb: typec: ucsi: Report power supply changes
xhci: hisilicon: fix refercence leak in xhci_histb_probe
Revert "usb: musb: convert to devm_platform_ioremap_resource_byname"
thunderbolt: Add support for Intel Tiger Lake-H
thunderbolt: Only configure USB4 wake for lane 0 adapters
thunderbolt: Add uaccess dependency to debugfs interface
thunderbolt: Fix memory leak if ida_simple_get() fails in enumerate_services()
thunderbolt: Add the missed ida_simple_remove() in ring_request_msix()
Linus Torvalds [Sun, 15 Nov 2020 17:57:58 +0000 (09:57 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Fixes for ARM and x86, the latter especially for old processors
without two-dimensional paging (EPT/NPT)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: mmu: fix is_tdp_mmu_check when the TDP MMU is not in use
KVM: SVM: Update cr3_lm_rsvd_bits for AMD SEV guests
KVM: x86: Introduce cr3_lm_rsvd_bits in kvm_vcpu_arch
KVM: x86: clflushopt should be treated as a no-op by emulation
KVM: arm64: Handle SCXTNUM_ELx traps
KVM: arm64: Unify trap handlers injecting an UNDEF
KVM: arm64: Allow setting of ID_AA64PFR0_EL1.CSV2 from userspace
Linus Torvalds [Sun, 15 Nov 2020 17:49:56 +0000 (09:49 -0800)]
Merge tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A small set of fixes for x86:
- Cure the fallout from the MSI irqdomain overhaul which missed that
the Intel IOMMU does not register virtual function devices and
therefore never reaches the point where the MSI interrupt domain is
assigned. This made the VF devices use the non-remapped MSI domain
which is trapped by the IOMMU/remap unit
- Remove an extra space in the SGI_UV architecture type procfs output
for UV5
- Remove a unused function which was missed when removing the UV BAU
TLB shootdown handler"
* tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
iommu/vt-d: Cure VF irqdomain hickup
x86/platform/uv: Fix copied UV5 output archtype
x86/platform/uv: Drop last traces of uv_flush_tlb_others
Linus Torvalds [Sun, 15 Nov 2020 17:46:36 +0000 (09:46 -0800)]
Merge tag 'perf-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of fixes for perf:
- A set of commits which reduce the stack usage of various perf
event handling functions which allocated large data structs on
stack causing stack overflows in the worst case
- Use the proper mechanism for detecting soft interrupts in the
recursion protection
- Make the resursion protection simpler and more robust
- Simplify the scheduling of event groups to make the code more
robust and prepare for fixing the issues vs. scheduling of
exclusive event groups
- Prevent event multiplexing and rotation for exclusive event groups
- Correct the perf event attribute exclusive semantics to take
pinned events, e.g. the PMU watchdog, into account
- Make the anythread filtering conditional for Intel's generic PMU
counters as it is not longer guaranteed to be supported on newer
CPUs. Check the corresponding CPUID leaf to make sure
- Fixup a duplicate initialization in an array which was probably
caused by the usual 'copy & paste - forgot to edit' mishap"
* tag 'perf-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Fix Add BW copypasta
perf/x86/intel: Make anythread filter support conditional
perf: Tweak perf_event_attr::exclusive semantics
perf: Fix event multiplexing for exclusive groups
perf: Simplify group_sched_in()
perf: Simplify group_sched_out()
perf/x86: Make dummy_iregs static
perf/arch: Remove perf_sample_data::regs_user_copy
perf: Optimize get_recursion_context()
perf: Fix get_recursion_context()
perf/x86: Reduce stack usage for x86_pmu::drain_pebs()
perf: Reduce stack usage of perf_output_begin()
Linus Torvalds [Sun, 15 Nov 2020 17:39:35 +0000 (09:39 -0800)]
Merge tag 'sched-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A set of scheduler fixes:
- Address a load balancer regression by making the load balancer use
the same logic as the wakeup path to spread tasks in the LLC domain
- Prefer the CPU on which a task run last over the local CPU in the
fast wakeup path for asymmetric CPU capacity systems to align with
the symmetric case. This ensures more locality and prevents massive
migration overhead on those asymetric systems
- Fix a memory corruption bug in the scheduler debug code caused by
handing a modified buffer pointer to kfree()"
* tag 'sched-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/debug: Fix memory corruption caused by multiple small reads of flags
sched/fair: Prefer prev cpu in asymmetric wakeup path
sched/fair: Ensure tasks spreading in LLC during LB
Linus Torvalds [Sun, 15 Nov 2020 17:25:43 +0000 (09:25 -0800)]
Merge tag 'locking-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two fixes for the locking subsystem:
- Prevent an unconditional interrupt enable in a futex helper
function which can be called from contexts which expect interrupts
to stay disabled across the call
- Don't modify lockdep chain keys in the validation process as that
causes chain inconsistency"
* tag 'locking-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Avoid to modify chain keys in validate_chain()
futex: Don't enable IRQs unconditionally in put_pi_state()
Linus Torvalds [Sun, 15 Nov 2020 16:57:19 +0000 (08:57 -0800)]
Merge branch 'for-5.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu fix and cleanup from Dennis Zhou:
"A fix for a Wshadow warning in the asm-generic percpu macros came in
and then I tacked on the removal of flexible array initializers in the
percpu allocator"
* 'for-5.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: convert flexible array initializers to use struct_size()
asm-generic: percpu: avoid Wshadow warning
Paolo Bonzini [Sun, 15 Nov 2020 13:55:43 +0000 (08:55 -0500)]
kvm: mmu: fix is_tdp_mmu_check when the TDP MMU is not in use
In some cases where shadow paging is in use, the root page will
be either mmu->pae_root or vcpu->arch.mmu->lm_root. Then it will
not have an associated struct kvm_mmu_page, because it is allocated
with alloc_page instead of kvm_mmu_alloc_page.
Just return false quickly from is_tdp_mmu_root if the TDP MMU is
not in use, which also includes the case where shadow paging is
enabled.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linus Torvalds [Sat, 14 Nov 2020 20:35:11 +0000 (12:35 -0800)]
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
"14 patches.
Subsystems affected by this patch series: mm (migration, vmscan, slub,
gup, memcg, hugetlbfs), mailmap, kbuild, reboot, watchdog, panic, and
ocfs2"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
ocfs2: initialize ip_next_orphan
panic: don't dump stack twice on warn
hugetlbfs: fix anon huge page migration race
mm: memcontrol: fix missing wakeup polling thread
kernel/watchdog: fix watchdog_allowed_mask not used warning
reboot: fix overflow parsing reboot cpu number
Revert "kernel/reboot.c: convert simple_strtoul to kstrtoint"
compiler.h: fix barrier_data() on clang
mm/gup: use unpin_user_pages() in __gup_longterm_locked()
mm/slub: fix panic in slab_alloc_node()
mailmap: fix entry for Dmitry Baryshkov/Eremin-Solenikov
mm/vmscan: fix NR_ISOLATED_FILE corruption on 64-bit
mm/compaction: stop isolation if too many pages are isolated and we have pages to migrate
mm/compaction: count pages and stop correctly during page isolation
Linus Torvalds [Sat, 14 Nov 2020 20:30:18 +0000 (12:30 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Two small clk driver fixes:
- Make to_clk_regmap() inline to avoid compiler annoyance
- Fix critical clks on i.MX imx8m SoCs"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: imx8m: fix bus critical clk registration
clk: define to_clk_regmap() as inline function
Linus Torvalds [Sat, 14 Nov 2020 20:25:39 +0000 (12:25 -0800)]
Merge tag 'hwmon-for-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Fix potential bufer overflow in pmbus/max20730 driver
- Fix locking issue in pmbus core
- Fix regression causing timeouts in applesmc driver
- Fix RPM calculation in pwm-fan driver
- Restrict counter visibility in amd_energy driver
* tag 'hwmon-for-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (amd_energy) modify the visibility of the counters
hwmon: (applesmc) Re-work SMC comms
hwmon: (pwm-fan) Fix RPM calculation
hwmon: (pmbus) Add mutex locking for sysfs reads
hwmon: (pmbus/max20730) use scnprintf() instead of snprintf()
Linus Torvalds [Sat, 14 Nov 2020 20:19:21 +0000 (12:19 -0800)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three small fixes, all in the embedded ufs driver subsystem"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufshcd: Fix missing destroy_workqueue()
scsi: ufs: Try to save power mode change and UIC cmd completion timeout
scsi: ufs: Fix unbalanced scsi_block_reqs_cnt caused by ufshcd_hold()
Linus Torvalds [Sat, 14 Nov 2020 20:04:02 +0000 (12:04 -0800)]
Merge tag 'selinux-pr-20201113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"One small SELinux patch to make sure we return an error code when an
allocation fails. It passes all of our tests, but given the nature of
the patch that isn't surprising"
* tag 'selinux-pr-20201113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: Fix error return code in sel_ib_pkey_sid_slow()
David Howells [Sat, 14 Nov 2020 17:27:57 +0000 (17:27 +0000)]
afs: Fix afs_write_end() when called with copied == 0 [ver #3]
When afs_write_end() is called with copied == 0, it tries to set the
dirty region, but there's no way to actually encode a 0-length region in
the encoding in page->private.
"0,0", for example, indicates a 1-byte region at offset 0. The maths
miscalculates this and sets it incorrectly.
Fix it to just do nothing but unlock and put the page in this case. We
don't actually need to mark the page dirty as nothing presumably
changed.
Fixes: ecc194266698 ("afs: Alter dirty range encoding in page->private") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The above stack is not reasonable, the final iput shouldn't happen in
ocfs2_orphan_filldir() function. Looking at the code,
2067 /* Skip inodes which are already added to recover list, since dio may
2068 * happen concurrently with unlink/rename */
2069 if (OCFS2_I(iter)->ip_next_orphan) {
2070 iput(iter);
2071 return 0;
2072 }
2073
The logic thinks the inode is already in recover list on seeing
ip_next_orphan is non-NULL, so it skip this inode after dropping a
reference which incremented in ocfs2_iget().
While, if the inode is already in recover list, it should have another
reference and the iput() at line 2070 should not be the final iput
(dropping the last reference). So I don't think the inode is really in
the recover list (no vmcore to confirm).
Note that ocfs2_queue_orphans(), though not shown up in the call back
trace, is holding cluster lock on the orphan directory when looking up
for unlinked inodes. The on disk inode eviction could involve a lot of
IOs which may need long time to finish. That means this node could hold
the cluster lock for very long time, that can lead to the lock requests
(from other nodes) to the orhpan directory hang for long time.
Looking at more on ip_next_orphan, I found it's not initialized when
allocating a new ocfs2_inode_info structure.
This causes te reflink operations from some nodes hang for very long
time waiting for the cluster lock on the orphan directory.
Fix: initialize ip_next_orphan as NULL.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201109171746.27884-1-wen.gang.wang@oracle.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christophe Leroy [Sat, 14 Nov 2020 06:52:20 +0000 (22:52 -0800)]
panic: don't dump stack twice on warn
Before commit ca52c2ccae12 ("panic: dump registers on panic_on_warn"),
__warn() was calling show_regs() when regs was not NULL, and show_stack()
otherwise.
After that commit, show_stack() is called regardless of whether
show_regs() has been called or not, leading to duplicated Call Trace:
Mike Kravetz [Sat, 14 Nov 2020 06:52:16 +0000 (22:52 -0800)]
hugetlbfs: fix anon huge page migration race
Qian Cai reported the following BUG in [1]
LTP: starting move_pages12
BUG: unable to handle page fault for address: ffffffffffffffe0
...
RIP: 0010:anon_vma_interval_tree_iter_first+0xa2/0x170 avc_start_pgoff at mm/interval_tree.c:63
Call Trace:
rmap_walk_anon+0x141/0xa30 rmap_walk_anon at mm/rmap.c:1864
try_to_unmap+0x209/0x2d0 try_to_unmap at mm/rmap.c:1763
migrate_pages+0x1005/0x1fb0
move_pages_and_store_status.isra.47+0xd7/0x1a0
__x64_sys_move_pages+0xa5c/0x1100
do_syscall_64+0x5f/0x310
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Hugh Dickins diagnosed this as a migration bug caused by code introduced
to use i_mmap_rwsem for pmd sharing synchronization. Specifically, the
routine unmap_and_move_huge_page() is always passing the TTU_RMAP_LOCKED
flag to try_to_unmap() while holding i_mmap_rwsem. This is wrong for
anon pages as the anon_vma_lock should be held in this case. Further
analysis suggested that i_mmap_rwsem was not required to he held at all
when calling try_to_unmap for anon pages as an anon page could never be
part of a shared pmd mapping.
Discussion also revealed that the hack in hugetlb_page_mapping_lock_write
to drop page lock and acquire i_mmap_rwsem is wrong. There is no way to
keep mapping valid while dropping page lock.
This patch does the following:
- Do not take i_mmap_rwsem and set TTU_RMAP_LOCKED for anon pages when
calling try_to_unmap.
- Remove the hacky code in hugetlb_page_mapping_lock_write. The routine
will now simply do a 'trylock' while still holding the page lock. If
the trylock fails, it will return NULL. This could impact the
callers:
- migration calling code will receive -EAGAIN and retry up to the
hard coded limit (10).
- memory error code will treat the page as BUSY. This will force
killing (SIGKILL) instead of SIGBUS any mapping tasks.
Do note that this change in behavior only happens when there is a
race. None of the standard kernel testing suites actually hit this
race, but it is possible.
Matteo Croce [Sat, 14 Nov 2020 06:52:07 +0000 (22:52 -0800)]
reboot: fix overflow parsing reboot cpu number
Limit the CPU number to num_possible_cpus(), because setting it to a
value lower than INT_MAX but higher than NR_CPUS produces the following
error on reboot and shutdown:
kstrtoint() and simple_strtoul() have a subtle difference which makes
them non interchangeable: if a non digit character is found amid the
parsing, the former will return an error, while the latter will just
stop parsing, e.g. simple_strtoul("123xyx") = 123.
The kernel cmdline reboot= argument allows to specify the CPU used for
rebooting, with the syntax `s####` among the other flags, e.g.
"reboot=warm,s31,force", so if this flag is not the last given, it's
silently ignored as well as the subsequent ones.
Fixes: 8d4f24d1e2fe ("kernel/reboot.c: convert simple_strtoul to kstrtoint") Signed-off-by: Matteo Croce <mcroce@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Petr Mladek <pmladek@suse.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mike Rapoport <rppt@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Fabian Frederick <fabf@skynet.be> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201103214025.116799-2-mcroce@linux.microsoft.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arvind Sankar [Sat, 14 Nov 2020 06:51:59 +0000 (22:51 -0800)]
compiler.h: fix barrier_data() on clang
Commit bf82e747dd2a ("include/linux/compiler*.h: make compiler-*.h
mutually exclusive") neglected to copy barrier_data() from
compiler-gcc.h into compiler-clang.h.
The definition in compiler-gcc.h was really to work around clang's more
aggressive optimization, so this broke barrier_data() on clang, and
consequently memzero_explicit() as well.
For example, this results in at least the memzero_explicit() call in
lib/crypto/sha256.c:sha256_transform() being optimized away by clang.
Fix this by moving the definition of barrier_data() into compiler.h.
Also move the gcc/clang definition of barrier() into compiler.h,
__memory_barrier() is icc-specific (and barrier() is already defined
using it in compiler-intel.h) and doesn't belong in compiler.h.
[rdunlap@infradead.org: fix ALPHA builds when SMP is not enabled]
Link: https://lkml.kernel.org/r/20201101231835.4589-1-rdunlap@infradead.org Fixes: bf82e747dd2a ("include/linux/compiler*.h: make compiler-*.h mutually exclusive") Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201014212631.207844-1-nivedita@alum.mit.edu Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jason Gunthorpe [Sat, 14 Nov 2020 06:51:56 +0000 (22:51 -0800)]
mm/gup: use unpin_user_pages() in __gup_longterm_locked()
When FOLL_PIN is passed to __get_user_pages() the page list must be put
back using unpin_user_pages() otherwise the page pin reference persists
in a corrupted state.
There are two places in the unwind of __gup_longterm_locked() that put
the pages back without checking. Normally on error this function would
return the partial page list making this the caller's responsibility,
but in these two cases the caller is not allowed to see these pages at
all.
Fixes: 8b207c59a65a ("mm/gup: track FOLL_PIN pages") Reported-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/0-v2-3ae7d9d162e2+2a7-gup_cma_fix_jgg@nvidia.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The issue is that object is not NULL while page is NULL which is odd but
may happen if the cache flush happened after loading object but before
loading page. Thus checking for the page pointer is required too.
The cache flush is done through an inter processor interrupt when a
piece of memory is off-lined. That interrupt is triggered when a memory
hot-unplug operation is initiated and offline_pages() is calling the
slub's MEM_GOING_OFFLINE callback slab_mem_going_offline_callback()
which is calling flush_cpu_slab(). If that interrupt is caught between
the reading of c->freelist and the reading of c->page, this could lead
to such a situation. That situation is expected and the later call to
this_cpu_cmpxchg_double() will detect the change to c->freelist and redo
the whole operation.
In commit b1b76500614e ("mm/slub.c: page is always non-NULL in
node_match()") check on the page pointer has been removed assuming that
page is always valid when it is called. It happens that this is not
true in that particular case, so check for page before calling
node_match() here.
Fixes: b1b76500614e ("mm/slub.c: page is always non-NULL in node_match()") Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Christoph Lameter <cl@linux.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Nathan Lynch <nathanl@linux.ibm.com> Cc: Scott Cheloha <cheloha@linux.ibm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201027190406.33283-1-ldufour@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nicholas Piggin [Sat, 14 Nov 2020 06:51:46 +0000 (22:51 -0800)]
mm/vmscan: fix NR_ISOLATED_FILE corruption on 64-bit
Previously the negated unsigned long would be cast back to signed long
which would have the correct negative value. After commit 1a3fa354f685
("mm/vmscan.c: change prototype for shrink_page_list"), the large
unsigned int converts to a large positive signed long.
Symptoms include CMA allocations hanging forever holding the cma_mutex
due to alloc_contig_range->...->isolate_migratepages_block waiting
forever in "while (unlikely(too_many_isolated(pgdat)))".
[akpm@linux-foundation.org: fix -stat.nr_lazyfree_fail as well, per Michal]
Fixes: 1a3fa354f685 ("mm/vmscan.c: change prototype for shrink_page_list") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vaneet Narang <v.narang@samsung.com> Cc: Maninder Singh <maninder1.s@samsung.com> Cc: Amit Sahrawat <a.sahrawat@samsung.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201029032320.1448441-1-npiggin@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Zi Yan [Sat, 14 Nov 2020 06:51:43 +0000 (22:51 -0800)]
mm/compaction: stop isolation if too many pages are isolated and we have pages to migrate
In isolate_migratepages_block, if we have too many isolated pages and
nr_migratepages is not zero, we should try to migrate what we have
without wasting time on isolating.
In theory it's possible that multiple parallel compactions will cause
too_many_isolated() to become true even if each has isolated less than
COMPACT_CLUSTER_MAX, and loop forever in the while loop. Bailing
immediately prevents that.
[vbabka@suse.cz: changelog addition]
Fixes: 8ac0c865edca (“mm,thp,compaction,cma: allow THP migration for CMA allocations”) Suggested-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@vger.kernel.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Rik van Riel <riel@surriel.com> Cc: Yang Shi <shy828301@gmail.com> Link: https://lkml.kernel.org/r/20201030183809.3616803-2-zi.yan@sent.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Zi Yan [Sat, 14 Nov 2020 06:51:40 +0000 (22:51 -0800)]
mm/compaction: count pages and stop correctly during page isolation
In isolate_migratepages_block, when cc->alloc_contig is true, we are
able to isolate compound pages. But nr_migratepages and nr_isolated did
not count compound pages correctly, causing us to isolate more pages
than we thought.
So count compound pages as the number of base pages they contain.
Otherwise, we might be trapped in too_many_isolated while loop, since
the actual isolated pages can go up to COMPACT_CLUSTER_MAX*512=16384,
where COMPACT_CLUSTER_MAX is 32, since we stop isolation after
cc->nr_migratepages reaches to COMPACT_CLUSTER_MAX.
In addition, after we fix the issue above, cc->nr_migratepages could
never be equal to COMPACT_CLUSTER_MAX if compound pages are isolated,
thus page isolation could not stop as we intended. Change the isolation
stop condition to '>='.
The issue can be triggered as follows:
In a system with 16GB memory and an 8GB CMA region reserved by
hugetlb_cma, if we first allocate 10GB THPs and mlock them (so some THPs
are allocated in the CMA region and mlocked), reserving 6 1GB hugetlb
pages via /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages will
get stuck (looping in too_many_isolated function) until we kill either
task. With the patch applied, oom will kill the application with 10GB
THPs and let hugetlb page reservation finish.
[ziy@nvidia.com: v3]
Link: https://lkml.kernel.org/r/20201030183809.3616803-1-zi.yan@sent.com Fixes: 8ac0c865edca ("cmm,thp,compaction,cma: allow THP migration for CMA allocations") Signed-off-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Yang Shi <shy828301@gmail.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Rik van Riel <riel@surriel.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201029200435.3386066-1-zi.yan@sent.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lyude Paul [Sat, 14 Nov 2020 00:14:10 +0000 (19:14 -0500)]
drm/nouveau/kms/nv50-: Use atomic encoder callbacks everywhere
It turns out that I forgot to go through and make sure that I converted all
encoder callbacks to use atomic_enable/atomic_disable(), so let's go and
actually do that.
Signed-off-by: Lyude Paul <lyude@redhat.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Fixes: 5ac6ef74805c ("drm/nouveau/kms: Search for encoders' connectors properly") Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
% scripts/faddr2line /lib/modules/5.9.0-rc8-next-20201009/kernel/drivers/gpu/drm/nouveau/nouveau.ko nouveau_connector_detect_depth+0x71/0xc0
nouveau_connector_detect_depth+0x71/0xc0:
nouveau_connector_detect_depth at /home/sasha/linux-next/drivers/gpu/drm/nouveau/nouveau_connector.c:891
It is actually line 889. See the disassembly below.
889 duallink = mode->clock >= bios->fp.duallink_transition_clk;
The NULL pointer being dereferenced is mode.
Git bisect has identified the following commit as bad: e770b7378b23 drm/nouveau/kms: Don't change EDID when it hasn't actually changed
Here is the chain of events that causes the oops.
On entry to nouveau_connector_detect_lvds, edid is set to NULL. The call
to nouveau_connector_detect sets nv_connector->edid to valid memory,
with status set to connector_status_connected and the flow of execution
branching to the out label.
The subsequent call to nouveau_connector_set_edid erronously clears
nv_connector->edid, via the local edid pointer which remains set to NULL.
Fix this by setting edid to the value of the just acquired
nv_connector->edid and executing the body of nouveau_connector_set_edid
only if nv_connector->edid and edid point to different memory addresses
thus preventing nv_connector->edid from being turned into a dangling
pointer.
Fixes: e770b7378b23 ("drm/nouveau/kms: Don't change EDID when it hasn't actually changed") Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Linus Torvalds [Sat, 14 Nov 2020 00:07:53 +0000 (16:07 -0800)]
Merge tag 'vfs-5.10-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull fs freeze fix and cleanups from Darrick Wong:
"A single vfs fix for 5.10, along with two subsequent cleanups.
A very long time ago, a hack was added to the vfs fs freeze protection
code to work around lockdep complaints about XFS, which would try to
run a transaction (which requires intwrite protection) to finalize an
xfs freeze (by which time the vfs had already taken intwrite).
Fast forward a few years, and XFS fixed the recursive intwrite problem
on its own, and the hack became unnecessary. Fast forward almost a
decade, and latent bugs in the code converting this hack from freeze
flags to freeze locks combine with lockdep bugs to make this reproduce
frequently enough to notice page faults racing with freeze.
Since the hack is unnecessary and causes thread race errors, just get
rid of it completely. Making this kind of vfs change midway through a
cycle makes me nervous, but a large enough number of the usual
VFS/ext4/XFS/btrfs suspects have said this looks good and solves a
real problem vector.
And once that removal is done, __sb_start_write is now simple enough
that it becomes possible to refactor the function into smaller,
simpler static inline helpers in linux/fs.h. The cleanup is
straightforward.
Summary:
- Finally remove the "convert to trylock" weirdness in the fs freezer
code. It was necessary 10 years ago to deal with nested
transactions in XFS, but we've long since removed that; and now
this is causing subtle race conditions when lockdep goes offline
and sb_start_* aren't prepared to retry a trylock failure.
- Minor cleanups of the sb_start_* fs freeze helpers"
* tag 'vfs-5.10-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
vfs: move __sb_{start,end}_write* to fs.h
vfs: separate __sb_start_write into blocking and non-blocking helpers
vfs: remove lockdep bogosity in __sb_start_write
Linus Torvalds [Sat, 14 Nov 2020 00:01:44 +0000 (16:01 -0800)]
Merge tag 'xfs-5.10-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
- Fix a fairly serious problem where the reverse mapping btree key
comparison functions were silently ignoring parts of the keyspace
when doing comparisons
- Fix a thinko in the online refcount scrubber
- Fix a missing unlock in the pnfs code
* tag 'xfs-5.10-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix a missing unlock on error in xfs_fs_map_blocks
xfs: fix brainos in the refcount scrubber's rmap fragment processor
xfs: fix rmap key and record comparison functions
xfs: set the unwritten bit in rmap lookup flags in xchk_bmap_get_rmapextents
xfs: fix flags argument to rmap lookup when converting shared file rmaps
Linus Torvalds [Fri, 13 Nov 2020 23:09:52 +0000 (15:09 -0800)]
Merge tag 'block-5.10-2020-11-13' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few small fixes:
- NVMe pull request from Christoph:
- don't clear the read-only bit on a revalidate (Sagi Grimberg)
- nbd error case refcount leak (Christoph)
- loop/generic uevent fix (Christoph, Petr)"
* tag 'block-5.10-2020-11-13' of git://git.kernel.dk/linux-block:
loop: Fix occasional uevent drop
block: add a return value to set_capacity_revalidate_and_notify
nbd: fix a block_device refcount leak in nbd_release
nvme: fix incorrect behavior when BLKROSET is called by the user
Linus Torvalds [Fri, 13 Nov 2020 23:05:19 +0000 (15:05 -0800)]
Merge tag 'io_uring-5.10-2020-11-13' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
"A single fix in here, for a missed rounding case at setup time, which
caused an otherwise legitimate setup case to return -EINVAL if used
with unaligned ring size values"
* tag 'io_uring-5.10-2020-11-13' of git://git.kernel.dk/linux-block:
io_uring: round-up cq size before comparing with rounded sq size
Linus Torvalds [Fri, 13 Nov 2020 19:04:25 +0000 (11:04 -0800)]
Merge tag 'pinctrl-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"A bunch of pin control fixes for the v5.10 kernel series.
Nothing in particular to say about it, because they are all driver
fixes.
I'm happy that some AMD driver fixes are appearing, it's been an
undermaintained driver, and laptops have suffered.
Summary:
- Two fixes to the Intel pin controller drivers: fixing pull
resistance bias.
- Fix some invalid SSI pins on the Ingenic pin controller.
- Make sure the clock is enabled when requesting interrupts from the
Rockchip GPIO controller.
- Make sure IRQs are mapped when looking up the IRQ for a GPIO line
on the Rockchip GPIO Write.
- Two regmap initialization fixes for the MCP23s08.
- Fix a GPI-only prefix function problem on the Aspeed pin
controller.
- Disable the debounce filter correctly on the AMD pin controller.
- Correct the timer clock setting for the AMD debounce timer.
- Make the Qualcomm pin controller more cautious around the handling
of PDC-related GPIO interrupts.
- Fix the interrupt map in the Qualcomm SM8250 pin controller"
* tag 'pinctrl-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: sm8250: Specify PDC map
pinctrl: qcom: Move clearing pending IRQ to .irq_request_resources callback
pinctrl: amd: use higher precision for 512 RtcClk
pinctrl: amd: fix incorrect way to disable debounce filter
pinctrl: aspeed: Fix GPI only function problem.
pinctrl: mcp23s08: Print error message when regmap init fails
pinctrl: mcp23s08: Use full chunk of memory for regmap configuration
pinctrl: rockchip: create irq mapping in gpio_to_irq
pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq
pinctrl: ingenic: Fix invalid SSI pins
pinctrl: intel: Set default bias in case no particular value given
pinctrl: intel: Fix 2 kOhm bias which is 833 Ohm
Linus Torvalds [Fri, 13 Nov 2020 18:09:40 +0000 (10:09 -0800)]
Merge tag 'mmc-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
- tmio: Fixup support for reset
- sdhci-of-esdhc: Extend erratum for pulse width to more broken HWs
- renesas_sdhi: Fix re-binding of drivers
* tag 'mmc-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
Revert "mmc: renesas_sdhi: workaround a regression when reinserting SD cards"
mmc: tmio: bring tuning HW to a sane state with MMC_POWER_OFF
mmc: tmio: when resetting, reset DMA controller, too
mmc: sdhci-of-esdhc: Handle pulse width detection erratum for more SoCs
mmc: renesas_sdhi_core: Add missing tmio_mmc_host_free() at remove
Linus Torvalds [Fri, 13 Nov 2020 17:53:53 +0000 (09:53 -0800)]
Merge tag 'drm-fixes-2020-11-13' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Nearly didn't send you a PR this week at all, but a few things
trickled in over the day, not a huge amount here, some i915, amdgpu
and a bunch of misc fixes. I have a couple of nouveau fixes
outstanding due to the PR having the wrong base, I'll figure it out
next week.
amdgpu:
- Pageflip fix for DCN3
- Declare TA firmware for green sardine
- Headless navi fix
i915:
- Pull phys pread/pwrite implementations to the backend
- Correctly set SFC capability for video engines
bridge:
- cdns Kconfig fix
hyperv_fb:
- fix missing include
gma500:
- oob access fix
mcde:
- unbalanced regulator fix"
* tag 'drm-fixes-2020-11-13' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: enable DCN for navi10 headless SKU
drm/amdgpu: add ta firmware load for green-sardine
drm/i915: Correctly set SFC capability for video engines
drm/i915/gem: Pull phys pread/pwrite implementations to the backend
drm/i915/gem: Allow backends to override pread implementation
drm/mcde: Fix unbalanced regulator
drm/gma500: Fix out-of-bounds access to struct drm_device.vblank[]
video: hyperv_fb: include vmalloc.h
drm: bridge: cdns: Kconfig: Switch over dependency to ARCH_K3
drm/amd/display: Add missing pflip irq
Linus Torvalds [Fri, 13 Nov 2020 17:36:10 +0000 (09:36 -0800)]
Merge tag 'trace-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull bootconfig fix from Steven Rostedt:
"Fix alignment of bootconfig
GRUB may align the init ramdisk size to 4 bytes, the magic number at
the end of the init ramdisk that denotes bootconfig is attached may
not be at the exact end of the ramdisk. The kernel needs to check back
at least 4 bytes"
* tag 'trace-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
bootconfig: Extend the magic check range to the preceding 3 bytes
Linus Torvalds [Fri, 13 Nov 2020 17:23:10 +0000 (09:23 -0800)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Spectre/Meltdown safelisting for some Qualcomm KRYO cores
- Fix RCU splat when failing to online a CPU due to a feature mismatch
- Fix a recently introduced sparse warning in kexec()
- Fix handling of CPU erratum 1418040 for late CPUs
- Ensure hot-added memory falls within linear-mapped region
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver
arm64: proton-pack: Add KRYO2XX silver CPUs to spectre-v2 safe-list
arm64: kpti: Add KRYO2XX gold/silver CPU cores to kpti safelist
arm64: Add MIDR value for KRYO2XX gold/silver CPU cores
arm64/mm: Validate hotplug range before creating linear mapping
arm64: smp: Tell RCU about CPUs that fail to come online
arm64: psci: Avoid printing in cpu_psci_cpu_die()
arm64: kexec_file: Fix sparse warning
arm64: errata: Fix handling of 1418040 with late CPU onlining
the fsl,imx53-flexcan isn't compatible with the fsl,p1010-flexcan any more. As
the former accesses the IP core in Little Endian mode and the latter uses Big
Endian mode.
With the conversion of the flexcan DT bindings to yaml, the dt_binding_check
this throws the following error:
Documentation/devicetree/bindings/clock/imx5-clock.example.dt.yaml: can@53fc8000: compatible: 'oneOf' conditional failed, one must be fixed:
['fsl,imx53-flexcan', 'fsl,p1010-flexcan'] is too long
Additional items are not allowed ('fsl,p1010-flexcan' was unexpected)
'fsl,imx53-flexcan' is not one of ['fsl,imx7d-flexcan', 'fsl,imx6ul-flexcan', 'fsl,imx6sx-flexcan']
'fsl,imx53-flexcan' is not one of ['fsl,ls1028ar1-flexcan']
'fsl,imx6q-flexcan' was expected
'fsl,lx2160ar1-flexcan' was expected
From schema: /builds/robherring/linux-dt-bindings/Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml
The error is fixed by replacing the "fsl,p1010-flexcan" compatible
(which turned out the be incompatible) with "fsl,imx25-flexcan" in the
binding example.
Reported-by: Rob Herring <robh+dt@kernel.org> Cc: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20201111213548.1621094-1-mkl@pengutronix.de
[robh: Add "fsl,imx25-flexcan" as fallback] Signed-off-by: Rob Herring <robh@kernel.org>
This patch fixes the following errors, which shows up during a dtbs_check:
arch/arm/boot/dts/imx53-ard.dt.yaml: can@53fc8000: compatible: 'oneOf' conditional failed, one must be fixed:
['fsl,imx53-flexcan', 'fsl,imx25-flexcan'] is too long
Additional items are not allowed ('fsl,imx25-flexcan' was unexpected)
'fsl,imx53-flexcan' is not one of ['fsl,imx7d-flexcan', 'fsl,imx6ul-flexcan', 'fsl,imx6sx-flexcan']
'fsl,imx53-flexcan' is not one of ['fsl,ls1028ar1-flexcan']
'fsl,imx6q-flexcan' was expected
'fsl,lx2160ar1-flexcan' was expected
From schema: Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml
Fixes: 9da470964a81 ("dt-bindings: can: flexcan: convert fsl,*flexcan bindings to yaml") Reported-by: Rob Herring <robh+dt@kernel.org> Cc: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20201111130507.1560881-4-mkl@pengutronix.de
[robh: drop singular fsl,imx53-flexcan and fsl,imx35-flexcan] Signed-off-by: Rob Herring <robh@kernel.org>
Chris Brandt [Wed, 11 Nov 2020 13:12:09 +0000 (08:12 -0500)]
usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode
Renesas R-Car and RZ/G SoCs have a firmware download mode over USB.
However, on reset a banner string is transmitted out which is not expected
to be echoed back and will corrupt the protocol.
Heikki Krogerus [Tue, 10 Nov 2020 12:05:47 +0000 (15:05 +0300)]
usb: typec: ucsi: Report power supply changes
When the ucsi power supply goes online/offline, and when the
power levels change, the power supply class needs to be
notified so it can inform the user space.
Fixes: f7de1a18e1d5 ("usb: typec: ucsi: register with power_supply class") Cc: stable@vger.kernel.org Reported-and-tested-by: Vladimir Yerilov <openmindead@gmail.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20201110120547.67922-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Zhang Qilong [Fri, 6 Nov 2020 12:22:21 +0000 (20:22 +0800)]
xhci: hisilicon: fix refercence leak in xhci_histb_probe
pm_runtime_get_sync() will increment pm usage at first and it
will resume the device later. We should decrease the usage count
whetever it succeeded or failed(maybe runtime of the device has
error, or device is in inaccessible state, or other error state).
If we do not call put operation to decrease the reference, it will
result in reference leak in xhci_histb_probe. Moreover, this
device cannot enter the idle state and always stay busy or other
non-idle state later. So we fixed it by jumping to error handling
branch.
On Beaglebone Black, where each interface has 2 children:
musb-dsps 47401c00.usb: can't request region for resource [mem 0x47401800-0x474019ff]
musb-hdrc musb-hdrc.1: musb_init_controller failed with status -16
musb-hdrc: probe of musb-hdrc.1 failed with error -16
musb-dsps 47401400.usb: can't request region for resource [mem 0x47401000-0x474011ff]
musb-hdrc musb-hdrc.0: musb_init_controller failed with status -16
musb-hdrc: probe of musb-hdrc.0 failed with error -16
Before, devm_ioremap_resource() was called on "dev" ("musb-hdrc.0" or
"musb-hdrc.1"), after it is called on "&pdev->dev" ("47401400.usb" or
"47401c00.usb"), leading to a duplicate region request, which fails.
Babu Moger [Thu, 12 Nov 2020 22:17:56 +0000 (16:17 -0600)]
KVM: x86: Introduce cr3_lm_rsvd_bits in kvm_vcpu_arch
SEV guests fail to boot on a system that supports the PCID feature.
While emulating the RSM instruction, KVM reads the guest CR3
and calls kvm_set_cr3(). If the vCPU is in the long mode,
kvm_set_cr3() does a sanity check for the CR3 value. In this case,
it validates whether the value has any reserved bits set. The
reserved bit range is 63:cpuid_maxphysaddr(). When AMD memory
encryption is enabled, the memory encryption bit is set in the CR3
value. The memory encryption bit may fall within the KVM reserved
bit range, causing the KVM emulation failure.
Introduce a new field cr3_lm_rsvd_bits in kvm_vcpu_arch which will
cache the reserved bits in the CR3 value. This will be initialized
to rsvd_bits(cpuid_maxphyaddr(vcpu), 63).
If the architecture has any special bits(like AMD SEV encryption bit)
that needs to be masked from the reserved bits, should be cleared
in vendor specific kvm_x86_ops.vcpu_after_set_cpuid handler.
Fixes: 204434229f94534b ("KVM: X86: Fix reserved bits check for MOV to CR3") Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <160521947657.32054.3264016688005356563.stgit@bmoger-ubuntu> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Thomas Gleixner [Thu, 12 Nov 2020 19:14:16 +0000 (20:14 +0100)]
iommu/vt-d: Cure VF irqdomain hickup
The recent changes to store the MSI irqdomain pointer in struct device
missed that Intel DMAR does not register virtual function devices. Due to
that a VF device gets the plain PCI-MSI domain assigned and then issues
compat MSI messages which get caught by the interrupt remapping unit.
Cure that by inheriting the irq domain from the physical function
device.
Ideally the irqdomain would be associated to the bus, but DMAR can have
multiple units and therefore irqdomains on a single bus. The VF 'bus' could
of course inherit the domain from the PF, but that'd be yet another x86
oddity.
Fixes: 809cfcd2c92e ("iommm/vt-d: Store irq domain in struct device") Reported-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Lu Baolu <baolu.lu@linux.intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Marc Zyngier <maz@kernel.org> Cc: David Woodhouse <dwmw2@infradead.org> Link: https://lore.kernel.org/r/draft-87eekymlpz.fsf@nanos.tec.linutronix.de