Tong Zhang [Sat, 29 Jan 2022 21:40:55 +0000 (13:40 -0800)]
binfmt_misc: fix crash when load/unload module
We should unregister the table upon module unload otherwise something
horrible will happen when we load binfmt_misc module again. Also note
that we should keep value returned by register_sysctl_mount_point() and
release it later, otherwise it will leak.
Also, per Christian's comment, to fully restore the old behavior that
won't break userspace the check(binfmt_misc_header) should be
eliminated.
binfmt_misc: Failed to create fs/binfmt_misc sysctl mount point
binfmt_misc: Failed to create fs/binfmt_misc sysctl mount point
BUG: unable to handle page fault for address: fffffbfff8004802
Call Trace:
init_misc_binfmt+0x2d/0x1000 [binfmt_misc]
Link: https://lkml.kernel.org/r/20220124181812.1869535-2-ztong0001@gmail.com Fixes: 79fbc4829c8b ("fs: move binfmt_misc sysctl to its own file") Signed-off-by: Tong Zhang <ztong0001@gmail.com> Co-developed-by: Christian Brauner<brauner@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Kees Cook <keescook@chromium.org> Cc: Iurii Zaikin <yzaikin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 29 Jan 2022 17:05:47 +0000 (19:05 +0200)]
Merge tag 'pci-v5.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci fixes from Bjorn Helgaas:
- Fix compilation warnings in new mt7621 driver (Sergio Paracuellos)
- Restore the sysfs "rom" file for VGA shadow ROMs, which was broken
when converting "rom" to be a static attribute (Bjorn Helgaas)
* tag 'pci-v5.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/sysfs: Find shadow ROM before static attribute initialization
PCI: mt7621: Remove unused function pcie_rmw()
PCI: mt7621: Drop of_match_ptr() to avoid unused variable
Linus Torvalds [Sat, 29 Jan 2022 13:45:33 +0000 (15:45 +0200)]
Merge tag 'gpio-fixes-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"Two fixes for the gpio-simulator:
- fix a bug with hogs not being set-up in gpio-sim when user-space
sets the chip label to an empty string
- include the gpio-sim documentation in the index"
* tag 'gpio-fixes-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: sim: add doc file to index file
gpio: sim: check the label length when setting up device properties
Linus Torvalds [Sat, 29 Jan 2022 13:34:04 +0000 (15:34 +0200)]
Merge tag 'char-misc-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two small char/misc driver fixes for 5.17-rc2 that fix some
reported issues. They are:
- fix up a merge issue in the at25.c driver that ended up dropping
some lines in the driver. The removed lines ended being needed, so
this restores it and the driver works again.
- counter core fix where the wrong error was being returned, NULL
should be the correct error for when memory is gone here, like the
kmalloc() core does.
Both of these have been in linux-next this week with no reported
issues"
* tag 'char-misc-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
counter: fix an IS_ERR() vs NULL bug
eeprom: at25: Restore missing allocation
Linus Torvalds [Sat, 29 Jan 2022 13:23:13 +0000 (15:23 +0200)]
Merge tag 'tty-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some small bug fixes and reverts for reported problems with
the tty core and drivers. They include:
- revert the fifo use for the 8250 console mode. It caused too many
regressions and problems, and had a bug in it as well. This is
being reworked and should show up in a later -rc1 release, but it's
not ready for 5.17
- rpmsg tty race fix
- restore the cyclades.h uapi header file. Turns out a compiler test
suite used it for some unknown reason. Bring it back just for the
parts that are used by the builder test so they continue to build.
No functionality is restored as no one actually has this hardware
anymore, nor is it really tested.
- stm32 driver fixes
- n_gsm flow control fixes
- pl011 driver fix
- rs485 initialization fix
All of these have been in linux-next this week with no reported
problems"
* tag 'tty-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
kbuild: remove include/linux/cyclades.h from header file check
serial: core: Initialize rs485 RTS polarity already on probe
serial: pl011: Fix incorrect rs485 RTS polarity on set_mctrl
serial: stm32: fix software flow control transfer
serial: stm32: prevent TDR register overwrite when sending x_char
tty: n_gsm: fix SW flow control encoding/handling
serial: 8250: of: Fix mapped region size when using reg-offset property
tty: rpmsg: Fix race condition releasing tty port
tty: Partially revert the removal of the Cyclades public API
tty: Add support for Brainboxes UC cards.
Revert "tty: serial: Use fifo in 8250 console driver"
Linus Torvalds [Sat, 29 Jan 2022 13:17:20 +0000 (15:17 +0200)]
Merge tag 'usb-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver fixes for 5.17-rc2 that resolve a
number of reported problems. These include:
- typec driver fixes
- xhci platform driver fixes for suspending
- ulpi core fix
- role.h build fix
- new device ids
- syzbot-reported bugfixes
- gadget driver fixes
- dwc3 driver fixes
- other small fixes
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: cdnsp: Fix segmentation fault in cdns_lost_power function
usb: dwc2: gadget: don't try to disable ep0 in dwc2_hsotg_suspend
usb: gadget: at91_udc: fix incorrect print type
usb: dwc3: xilinx: Fix error handling when getting USB3 PHY
usb: dwc3: xilinx: Skip resets and USB3 register settings for USB2.0 mode
usb: xhci-plat: fix crash when suspend if remote wake enable
usb: common: ulpi: Fix crash in ulpi_match()
usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS
ucsi_ccg: Check DEV_INT bit only when starting CCG4
USB: core: Fix hang in usb_kill_urb by adding memory barriers
usb-storage: Add unusual-devs entry for VL817 USB-SATA bridge
usb: typec: tcpm: Do not disconnect when receiving VSAFE0V
usb: typec: tcpm: Do not disconnect while receiving VBUS off
usb: typec: Don't try to register component master without components
usb: typec: Only attempt to link USB ports if there is fwnode
usb: typec: tcpci: don't touch CC line if it's Vconn source
usb: roles: fix include/linux/usb/role.h compile issue
Linus Torvalds [Sat, 29 Jan 2022 13:01:08 +0000 (15:01 +0200)]
Merge tag 'block-5.17-2022-01-28' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request
- add the IGNORE_DEV_SUBNQN quirk for Intel P4500/P4600 SSDs (Wu
Zheng)
- remove the unneeded ret variable in nvmf_dev_show (Changcheng
Deng)
- Fix for a hang regression introduced with a patch in the merge
window, where low queue depth devices would not always get woken
correctly (Laibin)
- Small series fixing an IO accounting issue with bio backed dm devices
(Mike, Yu)
* tag 'block-5.17-2022-01-28' of git://git.kernel.dk/linux-block:
dm: properly fix redundant bio-based IO accounting
dm: revert partial fix for redundant bio-based IO accounting
block: add bio_start_io_acct_time() to control start_time
blk-mq: Fix wrong wakeup batch configuration which will cause hang
nvme-fabrics: remove the unneeded ret variable in nvmf_dev_show
nvme-pci: add the IGNORE_DEV_SUBNQN quirk for Intel P4500/P4600 SSDs
blk-mq: fix missing blk_account_io_done() in error path
block: fix memory leak in disk_register_independent_access_ranges
Linus Torvalds [Sat, 29 Jan 2022 12:53:07 +0000 (14:53 +0200)]
Merge tag 'io_uring-5.17-2022-01-28' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"Just two small fixes this time:
- Fix a bug that can lead to node registration taking 1 second, when
it should finish much quicker (Dylan)
- Remove an unused argument from a function (Usama)"
* tag 'io_uring-5.17-2022-01-28' of git://git.kernel.dk/linux-block:
io_uring: remove unused argument from io_rsrc_node_alloc
io_uring: fix bug in slow unregistering of nodes
Linus Torvalds [Sat, 29 Jan 2022 12:46:19 +0000 (14:46 +0200)]
Merge tag 'powerpc-5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix VM debug warnings on boot triggered via __set_fixmap().
- Fix a debug warning in the 64-bit Book3S PMU handling code.
- Fix nested guest HFSCR handling with multiple vCPUs on Power9 or
later.
- Fix decrementer storm caused by a recent change, seen with some
configs.
Thanks to Alexey Kardashevskiy, Athira Rajeev, Christophe Leroy,
Fabiano Rosas, Maxime Bizon, Nicholas Piggin, and Sachin Sant.
* tag 'powerpc-5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s/interrupt: Fix decrementer storm
KVM: PPC: Book3S HV Nested: Fix nested HFSCR being clobbered with multiple vCPUs
powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending
powerpc/fixmap: Fix VM debug warning on unmap
Linus Torvalds [Sat, 29 Jan 2022 06:57:22 +0000 (08:57 +0200)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Errata workarounds for Cortex-A510: broken hardware dirty bit
management, detection code for the TRBE (tracing) bugs with the
actual fixes going in via the CoreSight tree.
- Cortex-X2 errata handling for TRBE (inheriting the workarounds from
Cortex-A710).
- Fix ex_handler_load_unaligned_zeropad() to use the correct struct
members.
- A couple of kselftest fixes for FPSIMD.
- Silence the vdso "no previous prototype" warning.
- Mark start_backtrace() notrace and NOKPROBE_SYMBOL.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cpufeature: List early Cortex-A510 parts as having broken dbm
kselftest/arm64: Correct logging of FPSIMD register read via ptrace
kselftest/arm64: Skip VL_INHERIT tests for unsupported vector types
arm64: errata: Add detection for TRBE trace data corruption
arm64: errata: Add detection for TRBE invalid prohibited states
arm64: errata: Add detection for TRBE ignored system register writes
arm64: Add Cortex-A510 CPU part definition
arm64: extable: fix load_unaligned_zeropad() reg indices
arm64: Mark start_backtrace() notrace and NOKPROBE_SYMBOL
arm64: errata: Update ARM64_ERRATUM_[2119858|2224489] with Cortex-X2 ranges
arm64: Add Cortex-X2 CPU part definition
arm64: vdso: Fix "no previous prototype" warning
Linus Torvalds [Sat, 29 Jan 2022 06:52:27 +0000 (08:52 +0200)]
Merge tag 'fixes-v5.17-lsm-ceph-null' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security sybsystem fix from James Morris:
"Fix NULL pointer crash in LSM via Ceph, from Vivek Goyal"
* tag 'fixes-v5.17-lsm-ceph-null' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
security, lsm: dentry_init_security() Handle multi LSM registration
Linus Torvalds [Sat, 29 Jan 2022 06:27:28 +0000 (08:27 +0200)]
Merge tag 'docs-5.17-3' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A few documentation fixes for 5.17"
* tag 'docs-5.17-3' of git://git.lwn.net/linux:
docs/vm: Fix typo in *harden*
Documentation: arm: marvell: Extend Avanta list
docs: fix typo in Documentation/kernel-hacking/locking.rst
docs: Hook the RTLA documents into the kernel docs build
Mike Snitzer [Fri, 28 Jan 2022 15:58:40 +0000 (10:58 -0500)]
dm: revert partial fix for redundant bio-based IO accounting
Reverts 9c94d0b4a5c2a ("dm: fix redundant IO accounting for bios that
need splitting") because it was too narrow in scope (only addressed
redundant 'sectors[]' accounting and not ios, nsecs[], etc).
Mike Snitzer [Fri, 28 Jan 2022 15:58:39 +0000 (10:58 -0500)]
block: add bio_start_io_acct_time() to control start_time
bio_start_io_acct_time() interface is like bio_start_io_acct() that
allows start_time to be passed in. This gives drivers the ability to
defer starting accounting until after IO is issued (but possibily not
entirely due to bio splitting).
Linus Torvalds [Fri, 28 Jan 2022 19:17:58 +0000 (21:17 +0200)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Sixteen patches, mostly minor fixes and updates; however there are
substantive driver bug fixes in pm8001, bnx2fc, zfcp, myrs and qedf"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: myrs: Fix crash in error case
scsi: 53c700: Remove redundant assignment to pointer SCp
scsi: ufs: Treat link loss as fatal error
scsi: ufs: Use generic error code in ufshcd_set_dev_pwr_mode()
scsi: bfa: Remove useless DMA-32 fallback configuration
scsi: hisi_sas: Remove useless DMA-32 fallback configuration
scsi: 3w-sas: Remove useless DMA-32 fallback configuration
scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices
scsi: pm8001: Fix bogus FW crash for maxcpus=1
scsi: qedf: Change context reset messages to ratelimited
scsi: qedf: Fix refcount issue when LOGO is received during TMF
scsi: qedf: Add stag_work to all the vports
scsi: ufs: ufshcd-pltfrm: Check the return value of devm_kstrdup()
scsi: target: iscsi: Make sure the np under each tpg is unique
scsi: elx: efct: Don't use GFP_KERNEL under spin lock
Linus Torvalds [Fri, 28 Jan 2022 19:12:07 +0000 (21:12 +0200)]
Merge tag 'efi-urgent-for-v5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- avoid UEFI v2.00+ runtime services on Apple Mac systems, as they have
been reported to cause crashes, and most Macs claim to be EFI v1.10
anyway
- avoid a spurious boot time warning on arm64 systems with 64k pages
* tag 'efi-urgent-for-v5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: runtime: avoid EFIv2 runtime services on Apple x86 machines
efi/libstub: arm64: Fix image check alignment at entry
Core of the problem is that ceph checks for return code from
security_dentry_init_security() and if return code is 0, it assumes
everything is fine and continues to call strlen(name), which crashes.
Typically SELinux LSM returns 0 and sets name to "security.selinux" and
it is not a problem. Or if selinux is not compiled in or disabled, it
returns -EOPNOTSUP and ceph deals with it.
But somehow in this configuration, 0 is being returned and "name" is
not being initialized and that's creating the problem.
Our suspicion is that BPF LSM is registering a hook for
dentry_init_security() and returns hook default of 0.
I have not been able to reproduce it just by doing CONFIG_BPF_LSM=y.
Stephen has tested the patch though and confirms it solves the problem
for him.
dentry_init_security() is written in such a way that it expects only one
LSM to register the hook. Atleast that's the expectation with current code.
If another LSM returns a hook and returns default, it will simply return
0 as of now and that will break ceph.
Hence, suggestion is that change semantics of this hook a bit. If there
are no LSMs or no LSM is taking ownership and initializing security context,
then return -EOPNOTSUP. Also allow at max one LSM to initialize security
context. This hook can't deal with multiple LSMs trying to init security
context. This patch implements this new behavior.
Reported-by: Stephen Muth <smuth4@gmail.com> Tested-by: Stephen Muth <smuth4@gmail.com> Suggested-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Reviewed-by: Serge Hallyn <serge@hallyn.com> Cc: Jeff Layton <jlayton@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Cc: Paul Moore <paul@paul-moore.com> Cc: <stable@vger.kernel.org> # 5.16.0 Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: James Morris <jmorris@namei.org>
Linus Torvalds [Fri, 28 Jan 2022 18:44:07 +0000 (20:44 +0200)]
Merge tag 'pm-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These make the buffer handling in pm_show_wakelocks() more robust and
drop an unused hibernation-related function.
Specifics:
- Make the buffer handling in pm_show_wakelocks() more robust by
using sysfs_emit_at() in it to generate output (Greg
Kroah-Hartman).
- Drop register_nosave_region_late() which is not used (Amadeusz
Sławiński)"
* tag 'pm-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Remove register_nosave_region_late()
PM: wakeup: simplify the output logic of pm_show_wakelocks()
Linus Torvalds [Fri, 28 Jan 2022 17:30:35 +0000 (19:30 +0200)]
Merge tag 'trace-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pulltracing fixes from Steven Rostedt:
- Limit mcount build time sorting to only those archs that we know it
works for.
- Fix memory leak in error path of histogram setup
- Fix and clean up rel_loc array out of bounds issue
- tools/rtla documentation fixes
- Fix issues with histogram logic
* tag 'trace-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Don't inc err_log entry count if entry allocation fails
tracing: Propagate is_signed to expression
tracing: Fix smatch warning for do while check in event_hist_trigger_parse()
tracing: Fix smatch warning for null glob in event_hist_trigger_parse()
tools/tracing: Update Makefile to build rtla
rtla: Make doc build optional
tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro
tracing: Avoid -Warray-bounds warning for __rel_loc macro
tracing/histogram: Fix a potential memory leak for kstrdup()
ftrace: Have architectures opt-in for mcount build time sorting
Linus Torvalds [Fri, 28 Jan 2022 17:25:24 +0000 (19:25 +0200)]
Merge branch 'ucount-rlimit-fixes-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull ucount rlimit fix from Eric Biederman.
Make sure the ucounts have a reference to the user namespace it refers
to, so that users that themselves don't carry such a reference around
can safely use the ucount functions.
* 'ucount-rlimit-fixes-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
ucount: Make get_ucount a safe get_user replacement
Linus Torvalds [Fri, 28 Jan 2022 17:19:22 +0000 (19:19 +0200)]
Merge tag 'rcu-urgent.2022.01.26a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU fix from Paul McKenney:
"This fixes a brown-paper-bag bug in RCU tasks that causes things like
BPF and ftrace to fail miserably on systems with non-power-of-two
numbers of CPUs.
It fixes a math error added in 7a3f52f15467 ("rcu-tasks: Introduce
->percpu_enqueue_shift for dynamic queue selection') during the v5.17
merge window. This commit works correctly only on systems with a
power-of-two number of CPUs, which just so happens to be the kind that
rcutorture always uses by default.
This pull request fixes the math so that things also work on systems
that don't happen to have a power-of-two number of CPUs"
* tag 'rcu-urgent.2022.01.26a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
rcu-tasks: Fix computation of CPU-to-list shift counts
Linus Torvalds [Fri, 28 Jan 2022 17:06:11 +0000 (19:06 +0200)]
Merge tag 'hyperv-fixes-signed-20220128' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Fix screen resolution for hyperv framebuffer (Michael Kelley)
- Fix packet header accounting for balloon driver (Yanming Liu)
* tag 'hyperv-fixes-signed-20220128' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
video: hyperv_fb: Fix validation of screen resolution
Drivers: hv: balloon: account for vmbus packet header in max_pkt_size
Linus Torvalds [Fri, 28 Jan 2022 17:00:26 +0000 (19:00 +0200)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Two larger x86 series:
- Redo incorrect fix for SEV/SMAP erratum
- Windows 11 Hyper-V workaround
Other x86 changes:
- Various x86 cleanups
- Re-enable access_tracking_perf_test
- Fix for #GP handling on SVM
- Fix for CPUID leaf 0Dh in KVM_GET_SUPPORTED_CPUID
- Fix for ICEBP in interrupt shadow
- Avoid false-positive RCU splat
- Enable Enlightened MSR-Bitmap support for real
ARM:
- Correctly update the shadow register on exception injection when
running in nVHE mode
- Correctly use the mm_ops indirection when performing cache
invalidation from the page-table walker
- Restrict the vgic-v3 workaround for SEIS to the two known broken
implementations
Generic code changes:
- Dead code cleanup"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
KVM: eventfd: Fix false positive RCU usage warning
KVM: nVMX: Allow VMREAD when Enlightened VMCS is in use
KVM: nVMX: Implement evmcs_field_offset() suitable for handle_vmread()
KVM: nVMX: Rename vmcs_to_field_offset{,_table}
KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER
KVM: nVMX: Also filter MSR_IA32_VMX_TRUE_PINBASED_CTLS when eVMCS
selftests: kvm: check dynamic bits against KVM_X86_XCOMP_GUEST_SUPP
KVM: x86: add system attribute to retrieve full set of supported xsave states
KVM: x86: Add a helper to retrieve userspace address from kvm_device_attr
selftests: kvm: move vm_xsave_req_perm call to amx_test
KVM: x86: Sync the states size with the XCR0/IA32_XSS at, any time
KVM: x86: Update vCPU's runtime CPUID on write to MSR_IA32_XSS
KVM: x86: Keep MSR_IA32_XSS unchanged for INIT
KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}
KVM: nVMX: WARN on any attempt to allocate shadow VMCS for vmcs02
KVM: selftests: Don't skip L2's VMCALL in SMM test for SVM guest
KVM: x86: Check .flags in kvm_cpuid_check_equal() too
KVM: x86: Forcibly leave nested virt when SMM state is toggled
KVM: SVM: drop unnecessary code in svm_hv_vmcb_dirty_nested_enlightenments()
KVM: SVM: hyper-v: Enable Enlightened MSR-Bitmap support for real
...
Linus Torvalds [Fri, 28 Jan 2022 16:50:05 +0000 (18:50 +0200)]
Merge tag 's390-5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix loading of modules with lots of relocations and add a regression
test for it.
- Fix machine check handling for vector validity and guarded storage
validity failures in KVM guests.
- Fix hypervisor performance data to include z/VM guests with access
control group set.
- Fix z900 build problem in uaccess code.
- Update defconfigs.
* tag 's390-5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/hypfs: include z/VM guests with access control group set
s390: update defconfigs
s390/module: test loading modules with a lot of relocations
s390/module: fix loading modules with a lot of relocations
s390/uaccess: fix compile error
s390/nmi: handle vector validity failures for KVM guests
s390/nmi: handle guarded storage validity failures for KVM guests
Linus Torvalds [Fri, 28 Jan 2022 16:36:42 +0000 (18:36 +0200)]
Merge tag 'ceph-for-5.17-rc2' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A ZERO_SIZE_PTR dereference fix from Xiubo and two fixes for async
creates interacting with pool namespace-constrained OSD permissions
from Jeff (marked for stable)"
* tag 'ceph-for-5.17-rc2' of git://github.com/ceph/ceph-client:
ceph: set pool_ns in new inode layout for async creates
ceph: properly put ceph_string reference after async create attempt
ceph: put the requests/sessions when it fails to alloc memory
Linus Torvalds [Fri, 28 Jan 2022 08:00:29 +0000 (10:00 +0200)]
ocfs2: fix subdirectory registration with register_sysctl()
The kernel test robot reports that commit d821b839710a ("ocfs2: simplify
subdirectory registration with register_sysctl()") is broken, and
results in kernel warning messages like
sysctl table check failed: fs/ocfs2/nm Not a file
sysctl table check failed: fs/ocfs2/nm No proc_handler
sysctl table check failed: fs/ocfs2/nm bogus .mode 0555
and in fact this was already reported back in linux-next, but nobody
seems to have reacted to that report. Possibly that original report
only ever made it to the lkp list.
The problem seems to be that the simplification didn't actually go far
enough, and should have converted the whole directory path to the final
sysctl file, rather than just the two first components.
Catalin Marinas [Fri, 28 Jan 2022 16:14:06 +0000 (16:14 +0000)]
Merge tag 'trbe-cortex-a510-errata' of gitolite.kernel.org:pub/scm/linux/kernel/git/coresight/linux into for-next/fixes
coresight: trbe: Workaround Cortex-A510 erratas
This pull request is providing arm64 definitions to support
TRBE Cortex-A510 erratas.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
* tag 'trbe-cortex-a510-errata' of gitolite.kernel.org:pub/scm/linux/kernel/git/coresight/linux:
arm64: errata: Add detection for TRBE trace data corruption
arm64: errata: Add detection for TRBE invalid prohibited states
arm64: errata: Add detection for TRBE ignored system register writes
arm64: Add Cortex-A510 CPU part definition
Linus Torvalds [Fri, 28 Jan 2022 15:51:31 +0000 (17:51 +0200)]
Merge tag 'fsnotify_for_v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify fixes from Jan Kara:
"Fixes for userspace breakage caused by fsnotify changes ~3 years ago
and one fanotify cleanup"
* tag 'fsnotify_for_v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: fix fsnotify hooks in pseudo filesystems
fsnotify: invalidate dcache before IN_DELETE event
fanotify: remove variable set but not used
Linus Torvalds [Fri, 28 Jan 2022 15:19:49 +0000 (17:19 +0200)]
Merge tag 'fs_for_v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull udf and quota fixes from Jan Kara:
"Fixes for crashes in UDF when inode expansion fails and one quota
cleanup"
* tag 'fs_for_v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: cleanup double word in comment
udf: Restore i_lenAlloc when inode expansion fails
udf: Fix NULL ptr deref when converting from inline format
Since kvm_unregister_irq_ack_notifier() does synchronize_srcu(&kvm->irq_srcu),
kvm->irq_ack_notifier_list is protected by kvm->irq_srcu. In fact,
kvm->irq_srcu SRCU read lock is held in kvm_notify_acked_irq(), making it
a false positive warning. So use hlist_for_each_entry_srcu() instead of
hlist_for_each_entry_rcu().
Reviewed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Hou Wenlong <houwenlong93@linux.alibaba.com>
Message-Id: <f98bac4f5052bad2c26df9ad50f7019e40434512.1643265976.git.houwenlong.hwl@antgroup.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 12 Jan 2022 17:01:34 +0000 (18:01 +0100)]
KVM: nVMX: Allow VMREAD when Enlightened VMCS is in use
Hyper-V TLFS explicitly forbids VMREAD and VMWRITE instructions when
Enlightened VMCS interface is in use:
"Any VMREAD or VMWRITE instructions while an enlightened VMCS is
active is unsupported and can result in unexpected behavior.""
Windows 11 + WSL2 seems to ignore this, attempts to VMREAD VMCS field
0x4404 ("VM-exit interruption information") are observed. Failing
these attempts with nested_vmx_failInvalid() makes such guests
unbootable.
Microsoft confirms this is a Hyper-V bug and claims that it'll get fixed
eventually but for the time being we need a workaround. (Temporary) allow
VMREAD to get data from the currently loaded Enlightened VMCS.
Note: VMWRITE instructions remain forbidden, it is not clear how to
handle them properly and hopefully won't ever be needed.
Reviewed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-6-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 12 Jan 2022 17:01:33 +0000 (18:01 +0100)]
KVM: nVMX: Implement evmcs_field_offset() suitable for handle_vmread()
In preparation to allowing reads from Enlightened VMCS from
handle_vmread(), implement evmcs_field_offset() to get the correct
read offset. get_evmcs_offset(), which is being used by KVM-on-Hyper-V,
is almost what's needed but a few things need to be adjusted. First,
WARN_ON() is unacceptable for handle_vmread() as any field can (in
theory) be supplied by the guest and not all fields are defined in
eVMCS v1. Second, we need to handle 'holes' in eVMCS (missing fields).
It also sounds like a good idea to WARN_ON() if such fields are ever
accessed by KVM-on-Hyper-V.
Implement dedicated evmcs_field_offset() helper.
No functional change intended.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-5-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 12 Jan 2022 17:01:32 +0000 (18:01 +0100)]
KVM: nVMX: Rename vmcs_to_field_offset{,_table}
vmcs_to_field_offset{,_table} may sound misleading as VMCS is an opaque
blob which is not supposed to be accessed directly. In fact,
vmcs_to_field_offset{,_table} are related to KVM defined VMCS12 structure.
Rename vmcs_field_to_offset() to get_vmcs12_field_offset() for clarity.
No functional change intended.
Reviewed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-4-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 12 Jan 2022 17:01:31 +0000 (18:01 +0100)]
KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER
Enlightened VMCS v1 doesn't have VMX_PREEMPTION_TIMER_VALUE field,
PIN_BASED_VMX_PREEMPTION_TIMER is also filtered out already so it makes
sense to filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER too.
Note, none of the currently existing Windows/Hyper-V versions are known
to enable 'save VMX-preemption timer value' when eVMCS is in use, the
change is aimed at making the filtering future proof.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-3-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 12 Jan 2022 17:01:30 +0000 (18:01 +0100)]
KVM: nVMX: Also filter MSR_IA32_VMX_TRUE_PINBASED_CTLS when eVMCS
Similar to MSR_IA32_VMX_EXIT_CTLS/MSR_IA32_VMX_TRUE_EXIT_CTLS,
MSR_IA32_VMX_ENTRY_CTLS/MSR_IA32_VMX_TRUE_ENTRY_CTLS pair,
MSR_IA32_VMX_TRUE_PINBASED_CTLS needs to be filtered the same way
MSR_IA32_VMX_PINBASED_CTLS is currently filtered as guests may solely rely
on 'true' MSR data.
Note, none of the currently existing Windows/Hyper-V versions are known
to stumble upon the unfiltered MSR_IA32_VMX_TRUE_PINBASED_CTLS, the change
is aimed at making the filtering future proof.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Wed, 26 Jan 2022 12:49:45 +0000 (07:49 -0500)]
KVM: x86: add system attribute to retrieve full set of supported xsave states
Because KVM_GET_SUPPORTED_CPUID is meant to be passed (by simple-minded
VMMs) to KVM_SET_CPUID2, it cannot include any dynamic xsave states that
have not been enabled. Probing those, for example so that they can be
passed to ARCH_REQ_XCOMP_GUEST_PERM, requires a new ioctl or arch_prctl.
The latter is in fact worse, even though that is what the rest of the
API uses, because it would require supported_xcr0 to be moved from the
KVM module to the kernel just for this use. In addition, the value
would be nonsensical (or an error would have to be returned) until
the KVM module is loaded in.
Therefore, to limit the growth of system ioctls, add a /dev/kvm
variant of KVM_{GET,HAS}_DEVICE_ATTR, and implement it in x86
with just one group (0) and attribute (KVM_X86_XCOMP_GUEST_SUPP).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Add a helper to retrieve userspace address from kvm_device_attr
Add a helper to handle converting the u64 userspace address embedded in
struct kvm_device_attr into a userspace pointer, it's all too easy to
forget the intermediate "unsigned long" cast as well as the truncation
check.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mark Brown [Mon, 24 Jan 2022 17:55:27 +0000 (17:55 +0000)]
kselftest/arm64: Correct logging of FPSIMD register read via ptrace
There's a cut'n'paste error in the logging for our test for reading register
state back via ptrace, correctly say that we did a read instead of a write.
Mark Brown [Mon, 24 Jan 2022 17:55:26 +0000 (17:55 +0000)]
kselftest/arm64: Skip VL_INHERIT tests for unsupported vector types
Currently we unconditionally test the ability to set the vector length
inheritance flag via ptrace meaning that we generate false failures on
systems that don't support SVE when we attempt to set the vector length
there. Check the hwcap and mark the tests as skipped when it's not present.
Fixes: 2028fe15d632 ("selftests: arm64: Add coverage of ptrace flags for SVE VL inheritance") Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20220124175527.3260234-2-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Linus Torvalds [Fri, 28 Jan 2022 09:47:05 +0000 (11:47 +0200)]
Merge tag 'ata-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA fix from Damien Le Moal:
"A single fix for 5.17-rc2, adding a missing resource allocation error
check in the pata_platform driver, from Zhou"
* tag 'ata-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: pata_platform: Fix a NULL pointer dereference in __pata_platform_probe()
Linus Torvalds [Fri, 28 Jan 2022 07:48:20 +0000 (09:48 +0200)]
Merge tag 'hwmon-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Fix crash in nct6775 driver
- Prevent divide by zero in adt7470 driver
- Fix conditional compile warning in pmbus/ir38064 driver
- Various minor fixes in lm90 driver
* tag 'hwmon-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (nct6775) Fix crash in clear_caseopen
hwmon: (adt7470) Prevent divide by zero in adt7470_fan_write()
hwmon: (pmbus/ir38064) Mark ir38064_of_match as __maybe_unused
hwmon: (lm90) Fix sysfs and udev notifications
hwmon: (lm90) Mark alert as broken for MAX6646/6647/6649
hwmon: (lm90) Mark alert as broken for MAX6680
hwmon: (lm90) Mark alert as broken for MAX6654
hwmon: (lm90) Re-enable interrupts after alert clears
hwmon: (lm90) Reduce maximum conversion rate for G781
* tag 'drm-fixes-2022-01-28' of git://anongit.freedesktop.org/drm/drm: (25 commits)
drm/privacy-screen: honor acpi=off in detect_thinkpad_privacy_screen
Revert "drm/ast: Support 1600x900 with 108MHz PCLK"
drm/amdgpu/display: Remove t_srx_delay_us.
drm/amd/display: Wrap dcn301_calculate_wm_and_dlg for FPU.
drm/amd/display: Fix FP start/end for dcn30_internal_validate_bw.
drm/amd/display/dc/calcs/dce_calcs: Fix a memleak in calculate_bandwidth()
drm/amdgpu/display: use msleep rather than udelay for long delays
drm/amdgpu/display: adjust msleep limit in dp_wait_for_training_aux_rd_interval
drm/amdgpu: filter out radeon secondary ids as well
drm/amd/display: change FIFO reset condition to embedded display only
drm/amd/display: Correct MPC split policy for DCN301
drm/amd/display: Fix for otg synchronization logic
drm/etnaviv: relax submit size limits
drm/msm/gpu: Cancel idle/boost work on suspend
drm/msm/gpu: Wait for idle before suspending
drm/atomic: Add the crtc to affected crtc only if uapi.enable = true
drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable
drm/msm/a6xx: Add missing suspend_count increment
drm/msm: Fix wrong size calculation
drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc
...
Tom Zanussi [Thu, 27 Jan 2022 21:44:16 +0000 (15:44 -0600)]
tracing: Fix smatch warning for do while check in event_hist_trigger_parse()
The patch 9df13dd33cee: "tracing: Allow whitespace to surround hist
trigger filter" from Jan 15, 2018, leads to the following Smatch
static checker warning:
kernel/trace/trace_events_hist.c:6199 event_hist_trigger_parse()
warn: 'p' can't be NULL.
Since p is always checked for a NULL value at the top of loop and
nothing in the rest of the loop will set it to NULL, the warning
is correct and might as well be 1 to silence the warning.
Tom Zanussi [Thu, 27 Jan 2022 21:44:15 +0000 (15:44 -0600)]
tracing: Fix smatch warning for null glob in event_hist_trigger_parse()
The recent rename of event_hist_trigger_parse() caused smatch
re-evaluation of trace_events_hist.c and as a result an old warning
was found:
kernel/trace/trace_events_hist.c:6174 event_hist_trigger_parse()
error: we previously assumed 'glob' could be null (see line 6166)
glob should never be null (and apparently smatch can also figure that
out and skip the warning when using the cross-function DB (but which
can't be used with a 0day build as it takes too much time to
generate)).
Nonetheless for clarity, remove the test but add a WARN_ON() in case
the code ever changes.
Link: https://lkml.kernel.org/r/96925e5c1f116654ada7ea0613d930b1266b5e1c.1643319703.git.zanussi@kernel.org Fixes: f5808f030a5da ("tracing: Add 'last error' error facility for hist triggers") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Shuah Khan [Wed, 26 Jan 2022 00:13:01 +0000 (17:13 -0700)]
rtla: Make doc build optional
rtla build fails due to doc build dependency on rst2man. Make
doc build optional so rtla could be built without docs. Leave
the install dependency on doc_install alone.
Kees Cook [Tue, 25 Jan 2022 22:00:37 +0000 (14:00 -0800)]
tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro
As done for trace_events.h, also fix the __rel_loc macro in perf.h,
which silences the -Warray-bounds warning:
In file included from ./include/linux/string.h:253,
from ./include/linux/bitmap.h:11,
from ./include/linux/cpumask.h:12,
from ./include/linux/mm_types_task.h:14,
from ./include/linux/mm_types.h:5,
from ./include/linux/buildid.h:5,
from ./include/linux/module.h:14,
from samples/trace_events/trace-events-sample.c:2:
In function '__fortify_strcpy',
inlined from 'perf_trace_foo_rel_loc' at samples/trace_events/./trace-events-sample.h:519:1:
./include/linux/fortify-string.h:47:33: warning: '__builtin_strcpy' offset 12 is out of the bounds [
0, 4] [-Warray-bounds]
47 | #define __underlying_strcpy __builtin_strcpy
| ^
./include/linux/fortify-string.h:445:24: note: in expansion of macro '__underlying_strcpy'
445 | return __underlying_strcpy(p, q);
| ^~~~~~~~~~~~~~~~~~~
Also make __data struct member a proper flexible array to avoid future
problems.
Link: https://lkml.kernel.org/r/20220125220037.2738923-1-keescook@chromium.org Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Fixes: 7401baa8ea899 ("tracing: Add '__rel_loc' using trace event macros") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Masami Hiramatsu [Tue, 25 Jan 2022 14:19:30 +0000 (23:19 +0900)]
tracing: Avoid -Warray-bounds warning for __rel_loc macro
Since -Warray-bounds checks the destination size from the type of given
pointer, __assign_rel_str() macro gets warned because it passes the
pointer to the 'u32' field instead of 'trace_event_raw_*' data structure.
Pass the data address calculated from the 'trace_event_raw_*' instead of
'u32' __rel_loc field.
Link: https://lkml.kernel.org/r/20220125233154.dac280ed36944c0c2fe6f3ac@kernel.org Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
[ This did not fix the warning, but is still a nice clean up ] Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
ftrace: Have architectures opt-in for mcount build time sorting
First S390 complained that the sorting of the mcount sections at build
time caused the kernel to crash on their architecture. Now PowerPC is
complaining about it too. And also ARM64 appears to be having issues.
It may be necessary to also update the relocation table for the values
in the mcount table. Not only do we have to sort the table, but also
update the relocations that may be applied to the items in the table.
If the system is not relocatable, then it is fine to sort, but if it is,
some architectures may have issues (although x86 does not as it shifts all
addresses the same).
Add a HAVE_BUILDTIME_MCOUNT_SORT that an architecture can set to say it is
safe to do the sorting at build time.
Also update the config to compile in build time sorting in the sorttable
code in scripts/ to depend on CONFIG_BUILDTIME_MCOUNT_SORT.
Link: https://lore.kernel.org/all/944D10DA-8200-4BA9-8D0A-3BED9AA99F82@linux.ibm.com/ Link: https://lkml.kernel.org/r/20220127153821.3bc1ac6e@gandalf.local.home Cc: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Yinan Liu <yinan@linux.alibaba.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Kees Cook <keescook@chromium.org> Reported-by: Sachin Sant <sachinp@linux.ibm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> [arm64] Tested-by: Sachin Sant <sachinp@linux.ibm.com> Fixes: e099573c11e6 ("scripts: ftrace - move the sort-processing in ftrace_init") Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
arm64: errata: Add detection for TRBE trace data corruption
TRBE implementations affected by Arm erratum #1902691 might corrupt trace
data or deadlock, when it's being written into the memory. So effectively
TRBE is broken and hence cannot be used to capture trace data. This adds
a new errata ARM64_ERRATUM_1902691 in arm64 errata framework.
arm64: errata: Add detection for TRBE invalid prohibited states
TRBE implementations affected by Arm erratum #2038923 might get TRBE into
an inconsistent view on whether trace is prohibited within the CPU. As a
result, the trace buffer or trace buffer state might be corrupted. This
happens after TRBE buffer has been enabled by setting TRBLIMITR_EL1.E,
followed by just a single context synchronization event before execution
changes from a context, in which trace is prohibited to one where it isn't,
or vice versa. In these mentioned conditions, the view of whether trace is
prohibited is inconsistent between parts of the CPU, and the trace buffer
or the trace buffer state might be corrupted. This adds a new errata
ARM64_ERRATUM_2038923 in arm64 errata framework.
arm64: errata: Add detection for TRBE ignored system register writes
TRBE implementations affected by Arm erratum #2064142 might fail to write
into certain system registers after the TRBE has been disabled. Under some
conditions after TRBE has been disabled, writes into certain TRBE registers
TRBLIMITR_EL1, TRBPTR_EL1, TRBBASER_EL1, TRBSR_EL1 and TRBTRG_EL1 will be
ignored and not be effected. This adds a new errata ARM64_ERRATUM_2064142
in arm64 errata framework.
Linus Torvalds [Thu, 27 Jan 2022 18:58:39 +0000 (20:58 +0200)]
Merge tag 'net-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter and can.
Current release - new code bugs:
- tcp: add a missing sk_defer_free_flush() in tcp_splice_read()
- tcp: add a stub for sk_defer_free_flush(), fix CONFIG_INET=n
- nf_tables: set last expression in register tracking area
- nft_connlimit: fix memleak if nf_ct_netns_get() fails
- mptcp: fix removing ids bitmap setting
- bonding: use rcu_dereference_rtnl when getting active slave
- fix three cases of sleep in atomic context in drivers: lan966x, gve
- handful of build fixes for esoteric drivers after netdev->dev_addr
was made const
Previous releases - regressions:
- revert "ipv6: Honor all IPv6 PIO Valid Lifetime values", it broke
Linux compatibility with USGv6 tests
- procfs: show net device bound packet types
- ipv4: fix ip option filtering for locally generated fragments
- phy: broadcom: hook up soft_reset for BCM54616S
Previous releases - always broken:
- ipv4: raw: lock the socket in raw_bind()
- ipv4: decrease the use of shared IPID generator to decrease the
chance of attackers guessing the values
- procfs: fix cross-netns information leakage in /proc/net/ptype
- ethtool: fix link extended state for big endian
- bridge: vlan: fix single net device option dumping
- ping: fix the sk_bound_dev_if match in ping_lookup"
* tag 'net-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (86 commits)
net: bridge: vlan: fix memory leak in __allowed_ingress
net: socket: rename SKB_DROP_REASON_SOCKET_FILTER
ipv4: remove sparse error in ip_neigh_gw4()
ipv4: avoid using shared IP generator for connected sockets
ipv4: tcp: send zero IPID in SYNACK messages
ipv4: raw: lock the socket in raw_bind()
MAINTAINERS: add missing IPv4/IPv6 header paths
MAINTAINERS: add more files to eth PHY
net: stmmac: dwmac-sun8i: use return val of readl_poll_timeout()
net: bridge: vlan: fix single net device option dumping
net: stmmac: skip only stmmac_ptp_register when resume from suspend
net: stmmac: configure PTP clock source prior to PTP initialization
Revert "ipv6: Honor all IPv6 PIO Valid Lifetime values"
connector/cn_proc: Use task_is_in_init_pid_ns()
pid: Introduce helper task_is_in_init_pid_ns()
gve: Fix GFP flags when allocing pages
net: lan966x: Fix sleep in atomic context when updating MAC table
net: lan966x: Fix sleep in atomic context when injecting frames
ethernet: seeq/ether3: don't write directly to netdev->dev_addr
ethernet: 8390/etherh: don't write directly to netdev->dev_addr
...
Jonathan Corbet [Fri, 21 Jan 2022 00:00:33 +0000 (17:00 -0700)]
docs: Hook the RTLA documents into the kernel docs build
The RTLA documents were added to Documentation/ but never hooked into the
rest of the docs build, leading to a bunch of warnings like:
Documentation/tools/rtla/rtla-osnoise.rst: WARNING: document isn't included in any toctree
Add some basic glue to wire these documents into the build so that they are
available with the rest of the rendered docs. No attempt has been made to
turn the RTLA docs into proper RST files rather than warmed-over man pages;
that is an exercise for the future.
Fixes: 60d2a6657c5e ("rtla: Add Documentation") Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/877dau555q.fsf@meer.lwn.net Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Laibin Qiu [Thu, 27 Jan 2022 10:00:47 +0000 (18:00 +0800)]
blk-mq: Fix wrong wakeup batch configuration which will cause hang
Commit 0b3a3c0a74497 ("blk-mq: fix tag_get wait task can't be
awakened") will recalculate wake_batch when incrementing or decrementing
active_queues to avoid wake_batch > hctx_max_depth. At the same time, in
order to not affect performance as much as possible, the minimum wakeup
batch is set to 4. But when the QD is small (such as QD=1), if inc or dec
active_queues increases wakeup batch, that can lead to a hang:
Fix this problem with the following strategies:
QD : >= 32 | < 32
---------------------------------
wakeup batch: 8~4 | 3~1
Tim Yi [Thu, 27 Jan 2022 07:49:53 +0000 (15:49 +0800)]
net: bridge: vlan: fix memory leak in __allowed_ingress
When using per-vlan state, if vlan snooping and stats are disabled,
untagged or priority-tagged ingress frame will go to check pvid state.
If the port state is forwarding and the pvid state is not
learning/forwarding, untagged or priority-tagged frame will be dropped
but skb memory is not freed.
Should free skb when __allowed_ingress returns false.
Fixes: 17b655fb80be ("net: bridge: vlan: add per-vlan state") Signed-off-by: Tim Yi <tim.yi@pica8.com> Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Link: https://lore.kernel.org/r/20220127074953.12632-1-tim.yi@pica8.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Menglong Dong [Thu, 27 Jan 2022 09:13:01 +0000 (17:13 +0800)]
net: socket: rename SKB_DROP_REASON_SOCKET_FILTER
Rename SKB_DROP_REASON_SOCKET_FILTER, which is used
as the reason of skb drop out of socket filter before
it's part of a released kernel. It will be used for
more protocols than just TCP in future series.
Eric Dumazet [Thu, 27 Jan 2022 01:34:04 +0000 (17:34 -0800)]
ipv4: remove sparse error in ip_neigh_gw4()
./include/net/route.h:373:48: warning: incorrect type in argument 2 (different base types)
./include/net/route.h:373:48: expected unsigned int [usertype] key
./include/net/route.h:373:48: got restricted __be32 [usertype] daddr
Fixes: 5e13fa575efc ("ipv4: Add helpers for neigh lookup for nexthop") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20220127013404.1279313-1-eric.dumazet@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
====================
ipv4: less uses of shared IP generator
From: Eric Dumazet <edumazet@google.com>
We keep receiving research reports based on linux IPID generation.
Before breaking part of the Internet by switching to pure
random generator, this series reduces the need for the
shared IP generator for TCP sockets.
====================
Eric Dumazet [Thu, 27 Jan 2022 01:10:22 +0000 (17:10 -0800)]
ipv4: avoid using shared IP generator for connected sockets
ip_select_ident_segs() has been very conservative about using
the connected socket private generator only for packets with IP_DF
set, claiming it was needed for some VJ compression implementations.
As mentioned in this referenced document, this can be abused.
(Ref: Off-Path TCP Exploits of the Mixed IPID Assignment)
Before switching to pure random IPID generation and possibly hurt
some workloads, lets use the private inet socket generator.
Not only this will remove one vulnerability, this will also
improve performance of TCP flows using pmtudisc==IP_PMTUDISC_DONT
Fixes: 0a2afb0d0529 ("inetpeer: get rid of ip_id_count") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reported-by: Ray Che <xijiache@gmail.com> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Thu, 27 Jan 2022 01:10:21 +0000 (17:10 -0800)]
ipv4: tcp: send zero IPID in SYNACK messages
In commit ec2905fe2734 ("ipv4: tcp: send zero IPID for RST and
ACK sent in SYN-RECV and TIME-WAIT state") we took care of some
ctl packets sent by TCP.
It turns out we need to use a similar strategy for SYNACK packets.
By default, they carry IP_DF and IPID==0, but there are ways
to ask them to use the hashed IP ident generator and thus
be used to build off-path attacks.
(Ref: Off-Path TCP Exploits of the Mixed IPID Assignment)
One of this way is to force (before listener is started)
echo 1 >/proc/sys/net/ipv4/ip_no_pmtu_disc
Another way is using forged ICMP ICMP_FRAG_NEEDED
with a very small MTU (like 68) to force a false return from
ip_dont_fragment()
In this patch, ip_build_and_send_pkt() uses the following
heuristics.
1) Most SYNACK packets are smaller than IPV4_MIN_MTU and therefore
can use IP_DF regardless of the listener or route pmtu setting.
2) In case the SYNACK packet is bigger than IPV4_MIN_MTU,
we use prandom_u32() generator instead of the IPv4 hashed ident one.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Ray Che <xijiache@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Cc: Geoff Alexander <alexandg@cs.unm.edu> Cc: Willy Tarreau <w@1wt.eu> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mathias Krause [Thu, 27 Jan 2022 08:34:19 +0000 (18:34 +1000)]
drm/vmwgfx: Fix stale file descriptors on failed usercopy
A failing usercopy of the fence_rep object will lead to a stale entry in
the file descriptor table as put_unused_fd() won't release it. This
enables userland to refer to a dangling 'file' object through that still
valid file descriptor, leading to all kinds of use-after-free
exploitation scenarios.
Fix this by deferring the call to fd_install() until after the usercopy
has succeeded.
Eric Dumazet [Thu, 27 Jan 2022 00:51:16 +0000 (16:51 -0800)]
ipv4: raw: lock the socket in raw_bind()
For some reason, raw_bind() forgot to lock the socket.
BUG: KCSAN: data-race in __ip4_datagram_connect / raw_bind
write to 0xffff8881170d4308 of 4 bytes by task 5466 on cpu 0:
raw_bind+0x1b0/0x250 net/ipv4/raw.c:739
inet_bind+0x56/0xa0 net/ipv4/af_inet.c:443
__sys_bind+0x14b/0x1b0 net/socket.c:1697
__do_sys_bind net/socket.c:1708 [inline]
__se_sys_bind net/socket.c:1706 [inline]
__x64_sys_bind+0x3d/0x50 net/socket.c:1706
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
read to 0xffff8881170d4308 of 4 bytes by task 5468 on cpu 1:
__ip4_datagram_connect+0xb7/0x7b0 net/ipv4/datagram.c:39
ip4_datagram_connect+0x2a/0x40 net/ipv4/datagram.c:89
inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576
__sys_connect_file net/socket.c:1900 [inline]
__sys_connect+0x197/0x1b0 net/socket.c:1917
__do_sys_connect net/socket.c:1927 [inline]
__se_sys_connect net/socket.c:1924 [inline]
__x64_sys_connect+0x3d/0x50 net/socket.c:1924
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
value changed: 0x00000000 -> 0x0003007f
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 5468 Comm: syz-executor.5 Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jens Axboe [Thu, 27 Jan 2022 13:52:50 +0000 (06:52 -0700)]
Merge tag 'nvme-5.17-2022-01-27' of git://git.infradead.org/nvme into block-5.17
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 5.17
- add the IGNORE_DEV_SUBNQN quirk for Intel P4500/P4600 SSDs (Wu Zheng)
- remove the unneeded ret variable in nvmf_dev_show (Changcheng Deng)"
* tag 'nvme-5.17-2022-01-27' of git://git.infradead.org/nvme:
nvme-fabrics: remove the unneeded ret variable in nvmf_dev_show
nvme-pci: add the IGNORE_DEV_SUBNQN quirk for Intel P4500/P4600 SSDs
Jisheng Zhang [Wed, 26 Jan 2022 16:52:15 +0000 (00:52 +0800)]
net: stmmac: dwmac-sun8i: use return val of readl_poll_timeout()
When readl_poll_timeout() timeout, we'd better directly use its return
value.
Before this patch:
[ 2.145528] dwmac-sun8i: probe of 4500000.ethernet failed with error -14
After this patch:
[ 2.138520] dwmac-sun8i: probe of 4500000.ethernet failed with error -110
Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: bridge: vlan: fix single net device option dumping
When dumping vlan options for a single net device we send the same
entries infinitely because user-space expects a 0 return at the end but
we keep returning skb->len and restarting the dump on retry. Fix it by
returning the value from br_vlan_dump_dev() if it completed or there was
an error. The only case that must return skb->len is when the dump was
incomplete and needs to continue (-EMSGSIZE).
Reported-by: Benjamin Poirier <bpoirier@nvidia.com> Fixes: 268e4fb623ce ("net: bridge: vlan: add rtm definitions and dump support") Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 27 Jan 2022 13:46:18 +0000 (13:46 +0000)]
Merge branch 'stmmac-ptp-fix'
Mohammad Athari Bin Ismail says:
====================
Fix PTP issue in stmmac
This patch series to fix PTP issue in stmmac related to:
1/ PTP clock source configuration during initialization.
2/ PTP initialization during resume from suspend.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net: stmmac: skip only stmmac_ptp_register when resume from suspend
When resume from suspend, besides skipping PTP registration, it also
skipping PTP HW initialization. This could cause PTP clock not able to
operate properly when resume from suspend.
To fix this, only stmmac_ptp_register() is skipped when resume from
suspend.
Fixes: 11824b82585d ("stmmac: Don't init ptp again when resume from suspend/hibernation") Cc: <stable@vger.kernel.org> # 5.15.x Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: stmmac: configure PTP clock source prior to PTP initialization
For Intel platform, it is required to configure PTP clock source prior PTP
initialization in MAC. So, need to move ptp_clk_freq_config execution from
stmmac_ptp_register() to stmmac_init_ptp().
Fixes: 29541325d5f3 ("stmmac: intel: Add PSE and PCH PTP clock source selection") Cc: <stable@vger.kernel.org> # 5.15.x Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit breaks Linux compatibility with USGv6 tests. The RFC this
commit was based on is actually an expired draft: no published RFC
currently allows the new behaviour it introduced.
Without full IETF endorsement, the flash renumbering scenario this
patch was supposed to enable is never going to work, as other IPv6
equipements on the same LAN will keep the 2 hours limit.
Fixes: e9b273f65279 ("ipv6: Honor all IPv6 PIO Valid Lifetime values") Signed-off-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 27 Jan 2022 09:23:26 +0000 (11:23 +0200)]
Merge tag 'rpmsg-v5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull rpmsg fixes from Bjorn Andersson:
"The cdev cleanup in the rpmsg_char driver was not performed properly,
resulting in unpredicable behaviour when the parent remote processor
is stopped with any of the cdevs open by a client.
Two patches transitions the implementation to use cdev_device_add()
and cdev_del_device(), to capture the relationship between the two
objects, and relocates the incorrectly placed cdev_del()"
* tag 'rpmsg-v5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev
rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev
Linus Torvalds [Thu, 27 Jan 2022 09:19:20 +0000 (11:19 +0200)]
Merge tag 'rproc-v5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull remoteproc fix from Bjorn Andersson:
"The interaction between the various Qualcomm remoteproc drivers and
the Qualcomm 'QMP' driver (used to communicate with the
power-management hardware) was reworked in v5.17-rc1, but failed to
account for the new Kconfig dependency"
* tag 'rproc-v5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
remoteproc: qcom: q6v5: fix service routines build errors
This patch series introduces a helper function task_is_in_init_pid_ns()
to replace open code. The two patches are extracted from the original
series [1] for network subsystem.
As a plan, we can firstly land this patch set into kernel 5.18; there
have 5 patches are left out from original series [1], as a next step,
I will resend them for appropriate linux-next merging.
Leo Yan [Wed, 26 Jan 2022 05:04:26 +0000 (13:04 +0800)]
pid: Introduce helper task_is_in_init_pid_ns()
Currently the kernel uses open code in multiple places to check if a
task is in the root PID namespace with the kind of format:
if (task_active_pid_ns(current) == &init_pid_ns)
do_something();
This patch creates a new helper function, task_is_in_init_pid_ns(), it
returns true if a passed task is in the root PID namespace, otherwise
returns false. So it will be used to replace open codes.
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
projects / kernel.git / log