review.tizen.org Git - platform/kernel/linux-starfive.git/log

Linux 6.1-rc8

Revert "mm: align larger anonymous mappings on THP boundaries"

This reverts commit f35b5d7d676e59e401690b678cd3cfec5e785c23.

It has been reported to cause huge performance regressions on some loads
(will-it-scale.per_process_ops, but also building the kernel with
clang).

The commit did speed up gcc builds by a small amount, so it's not an
unambiguous regression, but until the big regressions are understood,
let's revert it.

Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/r/202210181535.7144dd15-yujie.liu@intel.com
Reported-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/lkml/Y1DNQaoPWxE%2BrGce@dev-arch.thelio-3990X/
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

char: tpm: Protect tpm_pm_suspend with locks

Currently tpm transactions are executed unconditionally in
tpm_pm_suspend() function, which may lead to races with other tpm
accessors in the system.

Specifically, the hw_random tpm driver makes use of tpm_get_random(),
and this function is called in a loop from a kthread, which means it's
not frozen alongside userspace, and so can race with the work done
during system suspend:

  tpm tpm0: tpm_transmit: tpm_recv: error -52
  tpm tpm0: invalid TPM_STS.x 0xff, dumping stack for forensics
  CPU: 0 PID: 1 Comm: init Not tainted 6.1.0-rc5+ #135
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014
  Call Trace:
   tpm_tis_status.cold+0x19/0x20
   tpm_transmit+0x13b/0x390
   tpm_transmit_cmd+0x20/0x80
   tpm1_pm_suspend+0xa6/0x110
   tpm_pm_suspend+0x53/0x80
   __pnp_bus_suspend+0x35/0xe0
   __device_suspend+0x10f/0x350

Fix this by calling tpm_try_get_ops(), which itself is a wrapper around
tpm_chip_start(), but takes the appropriate mutex.

Signed-off-by: Jan Dabros <jsd@semihalf.com>
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/all/c5ba47ef-393f-1fba-30bd-1230d1b4b592@suse.cz/
Cc: stable@vger.kernel.org
Fixes: e891db1a18bf ("tpm: turn on TPM on suspend for TPM 1.x")
[Jason: reworked commit message, added metadata]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'perf_urgent_for_v6.1_rc8' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Borislav Petkov:

- Fix a use-after-free case where the perf pending task callback would
see an already freed event

* tag 'perf_urgent_for_v6.1_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix perf_pending_task() UaF

Merge tag 'timers_urgent_for_v6.1_rc8' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Borislav Petkov:

- Revert a fix to RISC-V timers supposed to address an uncertainty
   whether clock events are received during S3 or not which locks up
   other RISC-V platforms. The issue will be fixed differently later.

* tag 'timers_urgent_for_v6.1_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "clocksource/drivers/riscv: Events are stopped during CPU suspend"

Merge tag 'powerpc-6.1-6' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

- Fix oops in 32-bit BPF tail call tests

- Add missing declaration for machine_check_early_boot()

Thanks to Christophe Leroy and Naveen N. Rao.

* tag 'powerpc-6.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Add missing declaration for machine_check_early_boot()
powerpc/bpf/32: Fix Oops on tail call tests

Merge tag 'input-for-v6.1-rc7' of git://git./linux/kernel/git/dtor/input

Pull input fix from Dmitry Torokhov:

- a fix for Raydium touchscreen driver to stop leaking memory when
sending commands to the chip

* tag 'input-for-v6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: raydium_ts_i2c - fix memory leak in raydium_i2c_send()

Merge tag 'i2c-for-6.1-rc8' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
"A power state fix in the core for ACPI devices, a regression fix
  regarding bus recovery for the cadence driver, a DMA handling fix for
  the imx driver, and two error path fixes (npcm7xx and qcom-geni)"

* tag 'i2c-for-6.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx: Only DMA messages with I2C_M_DMA_SAFE flag set
  i2c: qcom-geni: fix error return code in geni_i2c_gpi_xfer
  i2c: cadence: Fix regression with bus recovery
  i2c: Restore initial power state if probe fails
  i2c: npcm7xx: Fix error handling in npcm_i2c_init()

Merge tag 'dax-fixes-6.1-rc8' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull dax fixes from Dan Williams:
"A few bug fixes around the handling of "Soft Reserved" memory and
  memory tiering information.

  Linux is starting to enounter more real world systems that deploy an
  ACPI HMAT to describe different performance classes of memory, as well
  the "special purpose" (Linux "Soft Reserved") designation from EFI.

  These fixes result from that testing.

  It has all appeared in -next for a while with no known issues.

   - Fix duplicate overlapping device-dax instances for HMAT described
     "Soft Reserved" Memory

   - Fix missing node targets in the sysfs representation of memory
     tiers

   - Remove a confusing variable initialization"

* tag 'dax-fixes-6.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: Fix duplicate 'hmem' device registration
  ACPI: HMAT: Fix initiator registration for single-initiator systems
  ACPI: HMAT: remove unnecessary variable initialization

Merge tag 'block-6.1-2022-12-02' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
"Just a small NVMe merge for this week, fixing protection of the name
  space list, and a missing clear of a reserved field when unused"

* tag 'block-6.1-2022-12-02' of git://git.kernel.dk/linux:
  nvme: fix SRCU protection of nvme_ns_head list
  nvme-pci: clear the prp2 field when not used

Merge tag 'pinctrl-v6.1-5' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
"Three driver fixes. The Intel fix looks like the most important.

   - Fix a potential divide by zero in pinctrl-singe (OMAP and
     HiSilicon)

   - Disable IRQs on startup in the Mediatek driver. This is a classic,
     we should be looking out for this more.

   - Save and restore pins in 'direct IRQ' mode in the Intel driver,
     this works around firmware bugs"

* tag 'pinctrl-v6.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: intel: Save and restore pins in "direct IRQ" mode
  pinctrl: meditatek: Startup with the IRQs disabled
  pinctrl: single: Fix potential division by zero

Merge tag 'riscv-for-linus-6.1-rc8' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

- build fix for the NR_CPUS Kconfig SBI version dependency

- fixes to early memory initialization, to fix page permissions in EFI
   and post-initmem-free

- build fix for the VDSO, to avoid trying to profile the VDSO functions

- fixes for kexec crash handling, to fix multi-core and interrupt
   related initialization inside the crash kernel

- fix for a race condition when handling multiple concurrect kernel
   stack overflows

* tag 'riscv-for-linus-6.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: kexec: Fixup crash_smp_send_stop without multi cores
  riscv: kexec: Fixup irq controller broken in kexec crash path
  riscv: mm: Proper page permissions after initmem free
  riscv: vdso: fix section overlapping under some conditions
  riscv: fix race when vmap stack overflow
  riscv: Sync efi page table's kernel mappings before switching
  riscv: Fix NR_CPUS range conditions

Merge tag 'mmc-v6.1-rc5-2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
"MMC core:
   - Fix ambiguous TRIM and DISCARD args
   - Fix removal of debugfs file for mmc_test

  MMC host:
   - mtk-sd: Add missing clk_disable_unprepare() in an error path
   - sdhci: Fix I/O voltage switch delay for UHS-I SD cards
   - sdhci-esdhc-imx: Fix CQHCI exit halt state check
   - sdhci-sprd: Fix voltage switch"

* tag 'mmc-v6.1-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-sprd: Fix no reset data and command after voltage switch
  mmc: sdhci: Fix voltage switch delay
  mmc: mtk-sd: Fix missing clk_disable_unprepare in msdc_of_clock_parse()
  mmc: mmc_test: Fix removal of debugfs file
  mmc: sdhci-esdhc-imx: correct CQHCI exit halt state check
  mmc: core: Fix ambiguous TRIM and DISCARD arg

Merge tag 'iommu-fixes-v6.1-rc7' of git://git./linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:
"Intel VT-d fixes:

   - IO/TLB flush fix

   - Various pci_dev refcount fixes"

* tag 'iommu-fixes-v6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
  iommu/vt-d: Fix PCI device refcount leak in has_external_pci()
  iommu/vt-d: Fix PCI device refcount leak in prq_event_thread()
  iommu/vt-d: Add a fix for devices need extra dtlb flush

x86/bugs: Make sure MSR_SPEC_CTRL is updated properly upon resume from S3

The "force" argument to write_spec_ctrl_current() is currently ambiguous
as it does not guarantee the MSR write. This is due to the optimization
that writes to the MSR happen only when the new value differs from the
cached value.

This is fine in most cases, but breaks for S3 resume when the cached MSR
value gets out of sync with the hardware MSR value due to S3 resetting
it.

When x86_spec_ctrl_current is same as x86_spec_ctrl_base, the MSR write
is skipped. Which results in SPEC_CTRL mitigations not getting restored.

Move the MSR write from write_spec_ctrl_current() to a new function that
unconditionally writes to the MSR. Update the callers accordingly and
rename functions.

[ bp: Rework a bit. ]

Fixes: caa0ff24d5d0 ("x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value")
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/806d39b0bfec2fe8f50dc5446dff20f5bb24a959.1669821572.git.pawan.kumar.gupta@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Input: raydium_ts_i2c - fix memory leak in raydium_i2c_send()

There is a kmemleak when test the raydium_i2c_ts with bpf mock device:

  unreferenced object 0xffff88812d3675a0 (size 8):
    comm "python3", pid 349, jiffies 4294741067 (age 95.695s)
    hex dump (first 8 bytes):
      11 0e 10 c0 01 00 04 00                          ........
    backtrace:
      [<0000000068427125>] __kmalloc+0x46/0x1b0
      [<0000000090180f91>] raydium_i2c_send+0xd4/0x2bf [raydium_i2c_ts]
      [<000000006e631aee>] raydium_i2c_initialize.cold+0xbc/0x3e4 [raydium_i2c_ts]
      [<00000000dc6fcf38>] raydium_i2c_probe+0x3cd/0x6bc [raydium_i2c_ts]
      [<00000000a310de16>] i2c_device_probe+0x651/0x680
      [<00000000f5a96bf3>] really_probe+0x17c/0x3f0
      [<00000000096ba499>] __driver_probe_device+0xe3/0x170
      [<00000000c5acb4d9>] driver_probe_device+0x49/0x120
      [<00000000264fe082>] __device_attach_driver+0xf7/0x150
      [<00000000f919423c>] bus_for_each_drv+0x114/0x180
      [<00000000e067feca>] __device_attach+0x1e5/0x2d0
      [<0000000054301fc2>] bus_probe_device+0x126/0x140
      [<00000000aad93b22>] device_add+0x810/0x1130
      [<00000000c086a53f>] i2c_new_client_device+0x352/0x4e0
      [<000000003c2c248c>] of_i2c_register_device+0xf1/0x110
      [<00000000ffec4177>] of_i2c_notify+0x100/0x160
  unreferenced object 0xffff88812d3675c8 (size 8):
    comm "python3", pid 349, jiffies 4294741070 (age 95.692s)
    hex dump (first 8 bytes):
      22 00 36 2d 81 88 ff ff                          ".6-....
    backtrace:
      [<0000000068427125>] __kmalloc+0x46/0x1b0
      [<0000000090180f91>] raydium_i2c_send+0xd4/0x2bf [raydium_i2c_ts]
      [<000000001d5c9620>] raydium_i2c_initialize.cold+0x223/0x3e4 [raydium_i2c_ts]
      [<00000000dc6fcf38>] raydium_i2c_probe+0x3cd/0x6bc [raydium_i2c_ts]
      [<00000000a310de16>] i2c_device_probe+0x651/0x680
      [<00000000f5a96bf3>] really_probe+0x17c/0x3f0
      [<00000000096ba499>] __driver_probe_device+0xe3/0x170
      [<00000000c5acb4d9>] driver_probe_device+0x49/0x120
      [<00000000264fe082>] __device_attach_driver+0xf7/0x150
      [<00000000f919423c>] bus_for_each_drv+0x114/0x180
      [<00000000e067feca>] __device_attach+0x1e5/0x2d0
      [<0000000054301fc2>] bus_probe_device+0x126/0x140
      [<00000000aad93b22>] device_add+0x810/0x1130
      [<00000000c086a53f>] i2c_new_client_device+0x352/0x4e0
      [<000000003c2c248c>] of_i2c_register_device+0xf1/0x110
      [<00000000ffec4177>] of_i2c_notify+0x100/0x160

After BANK_SWITCH command from i2c BUS, no matter success or error
happened, the tx_buf should be freed.

Fixes: 3b384bd6c3f2 ("Input: raydium_ts_i2c - do not split tx transactions")
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Link: https://lore.kernel.org/r/20221202103412.2120169-1-zhangxiaoxu5@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'sound-6.1-rc8' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
"Likely the last piece for 6.1; the only significant fixes are ASoC
  core ops fixes, while others are device-specific (rather minor) fixes
  in ASoC and FireWire drivers.

  All appear safe enough to take as a late stage material"

* tag 'sound-6.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: dice: fix regression for Lexicon I-ONIX FW810S
  ASoC: cs42l51: Correct PGA Volume minimum value
  ASoC: ops: Correct bounds check for second channel on SX controls
  ASoC: tlv320adc3xxx: Fix build error for implicit function declaration
  ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()
  ASoC: ops: Fix bounds check for _sx controls
  ASoC: fsl_micfil: explicitly clear CHnF flags
  ASoC: fsl_micfil: explicitly clear software reset bit

Merge tag 'drm-fixes-2022-12-02' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
"Things do seem to have finally settled down, just four i915 and one
  amdgpu this week. Probably won't have much for next week if you do
  push rc8 out.

  i915:
   - Fix dram info readout
   - Remove non-existent pipes from bigjoiner pipe mask
   - Fix negative value passed as remaining time
   - Never return 0 if not all requests retired

  amdgpu:
   - VCN fix for vangogh"

* tag 'drm-fixes-2022-12-02' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: enable Vangogh VCN indirect sram mode
  drm/i915: Never return 0 if not all requests retired
  drm/i915: Fix negative value passed as remaining time
  drm/i915: Remove non-existent pipes from bigjoiner pipe mask
  drm/i915/mtl: Fix dram info readout

Merge tag 'mm-hotfixes-stable-2022-12-02' of git://git./linux/kernel/git/akpm/mm

Pull misc hotfixes from Andrew Morton:
"15 hotfixes,  11 marked cc:stable.

  Only three or four of the latter address post-6.0 issues, which is
  hopefully a sign that things are converging"

* tag 'mm-hotfixes-stable-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  revert "kbuild: fix -Wimplicit-function-declaration in license_is_gpl_compatible"
  Kconfig.debug: provide a little extra FRAME_WARN leeway when KASAN is enabled
  drm/amdgpu: temporarily disable broken Clang builds due to blown stack-frame
  mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths
  mm/khugepaged: fix GUP-fast interaction by sending IPI
  mm/khugepaged: take the right locks for page table retraction
  mm: migrate: fix THP's mapcount on isolation
  mm: introduce arch_has_hw_nonleaf_pmd_young()
  mm: add dummy pmd_young() for architectures not having it
  mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()
  tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"
  nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()
  hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing
  madvise: use zap_page_range_single for madvise dontneed
  mm: replace VM_WARN_ON to pr_warn if the node is offline with __GFP_THISNODE

v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails

The V4L2_MEMORY_USERPTR interface is long deprecated and shouldn't be
used (and is discouraged for any modern v4l drivers).  And Seth Jenkins
points out that the fallback to VM_PFNMAP/VM_IO is fundamentally racy
and dangerous.

Note that it's not even a case that should trigger, since any normal
user pointer logic ends up just using the pin_user_pages_fast() call
that does the proper page reference counting.  That's not the problem
case, only if you try to use special device mappings do you have any
issues.

Normally I'd just remove this during the merge window, but since Seth
pointed out the problem cases, we really want to know as soon as
possible if there are actually any users of this odd special case of a
legacy interface.  Neither Hans nor Mauro seem to think that such
mis-uses of the old legacy interface should exist.  As Mauro says:

"See, V4L2 has actually 4 streaming APIs:
        - Kernel-allocated mmap (usually referred simply as just mmap);
        - USERPTR mmap;
        - read();
        - dmabuf;

  The USERPTR is one of the oldest way to use it, coming from V4L
  version 1 times, and by far the least used one"

And Hans chimed in on the USERPTR interface:

"To be honest, I wouldn't mind if it goes away completely, but that's a
  bit of a pipe dream right now"

but while removing this legacy interface entirely may be a pipe dream we
can at least try to remove the unlikely (and actively broken) case of
using special device mappings for USERPTR accesses.

This replaces it with a WARN_ONCE() that we can remove once we've
hopefully confirmed that no actual users exist.

NOTE! Longer term, this means that a 'struct frame_vector' only ever
contains proper page pointers, and all the games we have with converting
them to pages can go away (grep for 'frame_vector_to_pages()' and the
uses of 'vec->is_pfns').  But this is just the first step, to verify
that this code really is all dead, and do so as quickly as possible.

Reported-by: Seth Jenkins <sethjenkins@google.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'nvme-6.1-2022-01-02' of git://git.infradead.org/nvme into block-6.1

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 6.1

- fix SRCU protection of nvme_ns_head list (Caleb Sander)
- clear the prp2 field when not used (Lei Rao)"

* tag 'nvme-6.1-2022-01-02' of git://git.infradead.org/nvme:
nvme: fix SRCU protection of nvme_ns_head list
nvme-pci: clear the prp2 field when not used

iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()

for_each_pci_dev() is implemented by pci_get_device(). The comment of
pci_get_device() says that it will increase the reference count for the
returned pci_dev and also decrease the reference count for the input
pci_dev @from if it is not NULL.

If we break for_each_pci_dev() loop with pdev not NULL, we need to call
pci_dev_put() to decrease the reference count. Add the missing
pci_dev_put() for the error path to avoid reference count leak.

Fixes: 2e4552893038 ("iommu/vt-d: Unify the way to process DMAR device scope array")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221121113649.190393-3-wangxiongfeng2@huawei.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

iommu/vt-d: Fix PCI device refcount leak in has_external_pci()

for_each_pci_dev() is implemented by pci_get_device(). The comment of
pci_get_device() says that it will increase the reference count for the
returned pci_dev and also decrease the reference count for the input
pci_dev @from if it is not NULL.

If we break for_each_pci_dev() loop with pdev not NULL, we need to call
pci_dev_put() to decrease the reference count. Add the missing
pci_dev_put() before 'return true' to avoid reference count leak.

Fixes: 89a6079df791 ("iommu/vt-d: Force IOMMU on for platform opt in hint")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221121113649.190393-2-wangxiongfeng2@huawei.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

iommu/vt-d: Fix PCI device refcount leak in prq_event_thread()

As comment of pci_get_domain_bus_and_slot() says, it returns a pci device
with refcount increment, when finish using it, the caller must decrease
the reference count by calling pci_dev_put(). So call pci_dev_put() after
using the 'pdev' to avoid refcount leak.

Besides, if the 'pdev' is null or intel_svm_prq_report() returns error,
there is no need to trace this fault.

Fixes: 06f4b8d09dba ("iommu/vt-d: Remove unnecessary SVA data accesses in page fault path")
Suggested-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221119144028.2452731-1-yangyingliang@huawei.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

iommu/vt-d: Add a fix for devices need extra dtlb flush

QAT devices on Intel Sapphire Rapids and Emerald Rapids have a defect in
address translation service (ATS). These devices may inadvertently issue
ATS invalidation completion before posted writes initiated with
translated address that utilized translations matching the invalidation
address range, violating the invalidation completion ordering.

This patch adds an extra device TLB invalidation for the affected devices,
it is needed to ensure no more posted writes with translated address
following the invalidation completion. Therefore, the ordering is
preserved and data-corruption is prevented.

Device TLBs are invalidated under the following six conditions:
1. Device driver does DMA API unmap IOVA
2. Device driver unbind a PASID from a process, sva_unbind_device()
3. PASID is torn down, after PASID cache is flushed. e.g. process
exit_mmap() due to crash
4. Under SVA usage, called by mmu_notifier.invalidate_range() where
VM has to free pages that were unmapped
5. userspace driver unmaps a DMA buffer
6. Cache invalidation in vSVA usage (upcoming)

For #1 and #2, device drivers are responsible for stopping DMA traffic
before unmap/unbind. For #3, iommu driver gets mmu_notifier to
invalidate TLB the same way as normal user unmap which will do an extra
invalidation. The dTLB invalidation after PASID cache flush does not
need an extra invalidation.

Therefore, we only need to deal with #4 and #5 in this patch. #1 is also
covered by this patch due to common code path with #5.

Tested-by: Yuzhang Luo <yuzhang.luo@intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Link: https://lore.kernel.org/r/20221130062449.1360063-1-jacob.jun.pan@linux.intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Merge tag 'amd-drm-fixes-6.1-2022-12-01' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.1-2022-12-01:

amdgpu:
- VCN fix for vangogh

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221201202015.5931-1-alexander.deucher@amd.com

i2c: imx: Only DMA messages with I2C_M_DMA_SAFE flag set

Recent changes to the DMA code has resulting in the IMX driver failing
I2C transfers when the buffer has been vmalloc. Only perform DMA
transfers if the message has the I2C_M_DMA_SAFE flag set, indicating
the client is providing a buffer which is DMA safe.

This is a minimal fix for stable. The I2C core provides helpers to
allocate a bounce buffer. For a fuller fix the master should make use
of these helpers.

Fixes: 4544b9f25e70 ("dma-mapping: Add vmap checks to dma_map_single()")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

i2c: qcom-geni: fix error return code in geni_i2c_gpi_xfer

Fix to return a negative error code from the gi2c->err instead of
0.

Fixes: d8703554f4de ("i2c: qcom-geni: Add support for GPI DMA")
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasoluitons.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

i2c: cadence: Fix regression with bus recovery

Commit "i2c: cadence: Add standard bus recovery support" breaks for i2c
devices that have no pinctrl defined. There is no requirement for this
to exist in the DT. This has worked perfectly well without this before in
at least 1 real usage case on hardware (Mali Komeda DPU, Cadence i2c to
talk to a tda99xx phy). Adding the requirement to have pinctrl set up in
the device tree (or otherwise be found) is a regression where the whole
i2c device is lost entirely (in this case dropping entire devices which
then leads to the drm display stack unable to find the phy for display
output, thus having no drm display device and so on down the chain).

This converts the above commit to an enhancement if pinctrl can be found
for the i2c device, providing a timeout on read with recovery, but if not,
do what used to be done rather than a fatal loss of a device.

This restores the mentioned display devices to their working state again.

Fixes: 58b924241d0a ("i2c: cadence: Add standard bus recovery support")
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Reviewed-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Acked-by: Michal Simek <michal.simek@amd.com>
[wsa: added braces to else-branch]
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Merge tag 'drm-intel-fixes-2022-12-01' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- Fix dram info readout (Radhakrishna Sripada)
- Remove non-existent pipes from bigjoiner pipe mask (Ville Syrjälä)
- Fix negative value passed as remaining time (Janusz Krzysztofik)
- Never return 0 if not all requests retired (Janusz Krzysztofik)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y4hp+a3TJ13t2ZA1@tursulin-desk

error-injection: Add prompt for function error injection

The config to be able to inject error codes into any function annotated
with ALLOW_ERROR_INJECTION() is enabled when FUNCTION_ERROR_INJECTION is
enabled.  But unfortunately, this is always enabled on x86 when KPROBES
is enabled, and there's no way to turn it off.

As kprobes is useful for observability of the kernel, it is useful to
have it enabled in production environments.  But error injection should
be avoided.  Add a prompt to the config to allow it to be disabled even
when kprobes is enabled, and get rid of the "def_bool y".

This is a kernel debug feature (it's in Kconfig.debug), and should have
never been something enabled by default.

Cc: stable@vger.kernel.org
Fixes: 540adea3809f6 ("error-injection: Separate error-injection from kprobe")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drm/amdgpu: enable Vangogh VCN indirect sram mode

So that uses PSP to initialize HW.

Fixes: 0c2c02b66c672e ("drm/amdgpu/vcn: add firmware support for dimgrey_cavefish")
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

RISC-V: Fix a race condition during kernel stack overflow

This fixes a concrete bug but is also the basis for some cleanup work,
so I'm merging it based on the offending commit in order to minimize
future conflicts.

* commit '7e1864332fbc1b993659eab7974da9fe8bf8c128':
riscv: fix race when vmap stack overflow

Merge tag 'efi-fixes-for-v6.1-4' of git://git./linux/kernel/git/efi/efi

Pull EFI fix from Ard Biesheuvel:
"A single revert for some code that I added during this cycle. The code
  is not wrong, but it should be a bit more careful about how to handle
  the shadow call stack pointer, so it is better to revert it for now
  and bring it back later in improved form.

  Summary:

   - Revert runtime service sync exception recovery on arm64"

* tag 'efi-fixes-for-v6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  arm64: efi: Revert "Recover from synchronous exceptions ..."

Merge tag 'hwmon-for-v6.1-rc8' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

- Fix refcount leak and NULL pointer access in coretemp driver

- Fix UAF in ibmpex driver

- Add missing pci_disable_device() to i5500_temp driver

- Fix calculation in ina3221 driver

- Fix temperature scaling in ltc2947 driver

- Check result of devm_kcalloc call in asus-ec-sensors driver

* tag 'hwmon-for-v6.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (asus-ec-sensors) Add checks for devm_kcalloc
  hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()
  hwmon: (coretemp) Check for null before removing sysfs attrs
  hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails
  hwmon: (i5500_temp) fix missing pci_disable_device()
  hwmon: (ina3221) Fix shunt sum critical calculation
  hwmon: (ltc2947) fix temperature scaling

hwmon: (asus-ec-sensors) Add checks for devm_kcalloc

As the devm_kcalloc may return NULL, the return value needs to be checked
to avoid NULL poineter dereference.

Fixes: d0ddfd241e57 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221125014329.121560-1-yuancan@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()

As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put(). So call it after using to avoid refcount leak.

Fixes: 14513ee696a0 ("hwmon: (coretemp) Use PCI host bridge ID to identify CPU if necessary")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221118093303.214163-1-yangyingliang@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

hwmon: (coretemp) Check for null before removing sysfs attrs

If coretemp_add_core() gets an error then pdata->core_data[indx]
is already NULL and has been kfreed. Don't pass that to
sysfs_remove_group() as that will crash in sysfs_remove_group().

[Shortened for readability]
[91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label'
<cpu offline>
[91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188
[91855.165103] #PF: supervisor read access in kernel mode
[91855.194506] #PF: error_code(0x0000) - not-present page
[91855.224445] PGD 0 P4D 0
[91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI
...
[91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80
...
[91855.796571] Call Trace:
[91855.810524]  coretemp_cpu_offline+0x12b/0x1dd [coretemp]
[91855.841738]  ? coretemp_cpu_online+0x180/0x180 [coretemp]
[91855.871107]  cpuhp_invoke_callback+0x105/0x4b0
[91855.893432]  cpuhp_thread_fun+0x8e/0x150
...

Fix this by checking for NULL first.

Signed-off-by: Phil Auld <pauld@redhat.com>
Cc: linux-hwmon@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20221117162313.3164803-1-pauld@redhat.com
Fixes: 199e0de7f5df3 ("hwmon: (coretemp) Merge pkgtemp with coretemp")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

arm64: efi: Revert "Recover from synchronous exceptions ..."

This reverts commit 23715a26c8d81291, which introduced some code in
assembler that manipulates both the ordinary and the shadow call stack
pointer in a way that could potentially be taken advantage of. So let's
revert it, and do a better job the next time around.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Revert "clocksource/drivers/riscv: Events are stopped during CPU suspend"

This reverts commit 232ccac1bd9b5bfe73895f527c08623e7fa0752d.

On the subject of suspend, the RISC-V SBI spec states:

  This does not cover whether any given events actually reach the hart or
  not, just what the hart will do if it receives an event. On PolarFire
  SoC, and potentially other SiFive based implementations, events from the
  RISC-V timer do reach a hart during suspend. This is not the case for the
  implementation on the Allwinner D1 - there timer events are not received
  during suspend.

To fix this, the CLOCK_EVT_FEAT_C3STOP (mis)feature was enabled for the
timer driver - but this has broken both RCU stall detection and timers
generally on PolarFire SoC and potentially other SiFive based
implementations.

If an AXI read to the PCIe controller on PolarFire SoC times out, the
system will stall, however, with CLOCK_EVT_FEAT_C3STOP active, the system
just locks up without RCU stalling:

io scheduler mq-deadline registered
io scheduler kyber registered
microchip-pcie 2000000000.pcie: host bridge /soc/pcie@2000000000 ranges:
microchip-pcie 2000000000.pcie:      MEM 0x2008000000..0x2087ffffff -> 0x0008000000
microchip-pcie 2000000000.pcie: sec error in pcie2axi buffer
microchip-pcie 2000000000.pcie: ded error in pcie2axi buffer
microchip-pcie 2000000000.pcie: axi read request error
microchip-pcie 2000000000.pcie: axi read timeout
microchip-pcie 2000000000.pcie: sec error in pcie2axi buffer
microchip-pcie 2000000000.pcie: ded error in pcie2axi buffer
microchip-pcie 2000000000.pcie: sec error in pcie2axi buffer
microchip-pcie 2000000000.pcie: ded error in pcie2axi buffer
microchip-pcie 2000000000.pcie: sec error in pcie2axi buffer
microchip-pcie 2000000000.pcie: ded error in pcie2axi buffer
Freeing initrd memory: 7332K

Similarly issues were reported with clock_nanosleep() - with a test app
that sleeps each cpu for 6, 5, 4, 3 ms respectively, HZ=250 & the blamed
commit in place, the sleep times are rounded up to the next jiffy:

== CPU: 1 ==      == CPU: 2 ==      == CPU: 3 ==      == CPU: 4 ==
Mean: 7.974992    Mean: 7.976534    Mean: 7.962591    Mean: 3.952179
Std Dev: 0.154374 Std Dev: 0.156082 Std Dev: 0.171018 Std Dev: 0.076193
Hi: 9.472000      Hi: 10.495000     Hi: 8.864000      Hi: 4.736000
Lo: 6.087000      Lo: 6.380000      Lo: 4.872000      Lo: 3.403000
Samples: 521      Samples: 521      Samples: 521      Samples: 521

Fortunately, the D1 has a second timer, which is "currently used in
preference to the RISC-V/SBI timer driver" so a revert here does not
hurt operation of D1 in its current form.

Ultimately, a DeviceTree property (or node) will be added to encode the
behaviour of the timers, but until then revert the addition of
CLOCK_EVT_FEAT_C3STOP.

Fixes: 232ccac1bd9b ("clocksource/drivers/riscv: Events are stopped during CPU suspend")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/linux-riscv/YzYTNQRxLr7Q9JR0@spud/
Link: https://github.com/riscv-non-isa/riscv-sbi-doc/issues/98/
Link: https://lore.kernel.org/linux-riscv/bf6d3b1f-f703-4a25-833e-972a44a04114@sholland.org/
Link: https://lore.kernel.org/r/20221122121620.3522431-1-conor.dooley@microchip.com

mmc: sdhci-sprd: Fix no reset data and command after voltage switch

After switching the voltage, no reset data and command will cause
CMD2 timeout.

Fixes: 29ca763fc26f ("mmc: sdhci-sprd: Add pin control support for voltage switch")
Signed-off-by: Wenchao Chen <wenchao.chen@unisoc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221130121328.25553-1-wenchao.chen@unisoc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
"A set of clk driver fixes that resolve issues for various SoCs.

  Most of these are incorrect clk data, like bad parent descriptions.
  When the clk tree is improperly described things don't work, like USB
  and UFS controllers, because clk frequencies are wonky. Here are the
  extra details:

   - Fix the parent of UFS reference clks on Qualcomm SC8280XP so that
     UFS works properly

   - Fix the clk ID for USB on AT91 RM9200 so the USB driver continues
     to probe

   - Stop using of_device_get_match_data() on the wrong device for a
     Samsung Exynos driver so it gets the proper clk data

   - Fix ExynosAutov9 binding

   - Fix the parent of the div4 clk on Exynos7885

   - Stop calling runtime PM APIs from the Qualcomm GDSC driver directly
     as it leads to a lockdep splat and is just plain wrong because it
     violates runtime PM semantics by calling runtime PM APIs when the
     device has been runtime PM disabled"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: qcom: gcc-sc8280xp: add cxo as parent for three ufs ref clks
  ARM: at91: rm9200: fix usb device clock id
  clk: samsung: Revert "clk: samsung: exynos-clkout: Use of_device_get_match_data()"
  dt-bindings: clock: exynosautov9: fix reference to CMU_FSYS1
  clk: qcom: gdsc: Remove direct runtime PM calls
  clk: samsung: exynos7885: Correct "div4" clock parents

revert "kbuild: fix -Wimplicit-function-declaration in license_is_gpl_compatible"

It causes build failures with unusual CC/HOSTCC combinations.

Quoting
https://lkml.kernel.org/r/A222B1E6-69B8-4085-AD1B-27BDB72CA971@goldelico.com:

  HOSTCC  scripts/mod/modpost.o - due to target missing
In file included from include/linux/string.h:5,
                 from scripts/mod/../../include/linux/license.h:5,
                 from scripts/mod/modpost.c:24:
include/linux/compiler.h:246:10: fatal error: asm/rwonce.h: No such file or directory
  246 | #include <asm/rwonce.h>
      |          ^~~~~~~~~~~~~~
compilation terminated.

...

The problem is that HOSTCC is not necessarily the same compiler or even
architecture as CC and pulling in <linux/compiler.h> or <asm/rwonce.h>
files indirectly isn't a good idea then.

My toolchain is providing HOSTCC = gcc (MacPorts) and CC = arm-linux-gnueabihf
(built from gcc source) and all running on Darwin.

If I change the include to <string.h> I can then "HOSTCC scripts/mod/modpost.c"
but then it fails for "CC kernel/module/main.c" not finding <string.h>:

  CC      kernel/module/main.o - due to target missing
In file included from kernel/module/main.c:43:0:
./include/linux/license.h:5:20: fatal error: string.h: No such file or directory
#include <string.h>
                    ^
compilation terminated.

Reported-by: "H. Nikolaus Schaller" <hns@goldelico.com>
Cc: Sam James <sam@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Kconfig.debug: provide a little extra FRAME_WARN leeway when KASAN is enabled

When enabled, KASAN enlarges function's stack-frames. Pushing quite a few
over the current threshold. This can mainly be seen on 32-bit
architectures where the present limit (when !GCC) is a lowly 1024-Bytes.

Link: https://lkml.kernel.org/r/20221125120750.3537134-3-lee@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@gmail.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Tom Rix <trix@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drm/amdgpu: temporarily disable broken Clang builds due to blown stack-frame

Patch series "Fix a bunch of allmodconfig errors", v2.

Since b339ec9c229aa ("kbuild: Only default to -Werror if COMPILE_TEST")
WERROR now defaults to COMPILE_TEST meaning that it's enabled for
allmodconfig builds.  This leads to some interesting build failures when
using Clang, each resolved in this set.

With this set applied, I am able to obtain a successful allmodconfig Arm
build.

This patch (of 2):

calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 ||
ARM64) architectures built with Clang (all released versions), whereby the
stack frame gets blown up to well over 5k.  This would cause an immediate
kernel panic on most architectures.  We'll revert this when the following
bug report has been resolved:
https://github.com/llvm/llvm-project/issues/41896.

Link: https://lkml.kernel.org/r/20221125120750.3537134-1-lee@kernel.org
Link: https://lkml.kernel.org/r/20221125120750.3537134-2-lee@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@gmail.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Lee Jones <lee@kernel.org>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Tom Rix <trix@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths

Any codepath that zaps page table entries must invoke MMU notifiers to
ensure that secondary MMUs (like KVM) don't keep accessing pages which
aren't mapped anymore. Secondary MMUs don't hold their own references to
pages that are mirrored over, so failing to notify them can lead to page
use-after-free.

I'm marking this as addressing an issue introduced in commit f3f0e1d2150b
("khugepaged: add support of collapse for tmpfs/shmem pages"), but most of
the security impact of this only came in commit 27e1f8273113 ("khugepaged:
enable collapse pmd for pte-mapped THP"), which actually omitted flushes
for the removal of present PTEs, not just for the removal of empty page
tables.

Link: https://lkml.kernel.org/r/20221129154730.2274278-3-jannh@google.com
Link: https://lkml.kernel.org/r/20221128180252.1684965-3-jannh@google.com
Link: https://lkml.kernel.org/r/20221125213714.4115729-3-jannh@google.com
Fixes: f3f0e1d2150b ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/khugepaged: fix GUP-fast interaction by sending IPI

Since commit 70cbc3cc78a99 ("mm: gup: fix the fast GUP race against THP
collapse"), the lockless_pages_from_mm() fastpath rechecks the pmd_t to
ensure that the page table was not removed by khugepaged in between.

However, lockless_pages_from_mm() still requires that the page table is
not concurrently freed. Fix it by sending IPIs (if the architecture uses
semi-RCU-style page table freeing) before freeing/reusing page tables.

Link: https://lkml.kernel.org/r/20221129154730.2274278-2-jannh@google.com
Link: https://lkml.kernel.org/r/20221128180252.1684965-2-jannh@google.com
Link: https://lkml.kernel.org/r/20221125213714.4115729-2-jannh@google.com
Fixes: ba76149f47d8 ("thp: khugepaged")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/khugepaged: take the right locks for page table retraction

pagetable walks on address ranges mapped by VMAs can be done under the
mmap lock, the lock of an anon_vma attached to the VMA, or the lock of the
VMA's address_space.  Only one of these needs to be held, and it does not
need to be held in exclusive mode.

Under those circumstances, the rules for concurrent access to page table
entries are:

- Terminal page table entries (entries that don't point to another page
   table) can be arbitrarily changed under the page table lock, with the
   exception that they always need to be consistent for
   hardware page table walks and lockless_pages_from_mm().
   This includes that they can be changed into non-terminal entries.
- Non-terminal page table entries (which point to another page table)
   can not be modified; readers are allowed to READ_ONCE() an entry, verify
   that it is non-terminal, and then assume that its value will stay as-is.

Retracting a page table involves modifying a non-terminal entry, so
page-table-level locks are insufficient to protect against concurrent page
table traversal; it requires taking all the higher-level locks under which
it is possible to start a page walk in the relevant range in exclusive
mode.

The collapse_huge_page() path for anonymous THP already follows this rule,
but the shmem/file THP path was getting it wrong, making it possible for
concurrent rmap-based operations to cause corruption.

Link: https://lkml.kernel.org/r/20221129154730.2274278-1-jannh@google.com
Link: https://lkml.kernel.org/r/20221128180252.1684965-1-jannh@google.com
Link: https://lkml.kernel.org/r/20221125213714.4115729-1-jannh@google.com
Fixes: 27e1f8273113 ("khugepaged: enable collapse pmd for pte-mapped THP")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm: migrate: fix THP's mapcount on isolation

The issue is reported when removing memory through virtio_mem device.  The
transparent huge page, experienced copy-on-write fault, is wrongly
regarded as pinned.  The transparent huge page is escaped from being
isolated in isolate_migratepages_block().  The transparent huge page can't
be migrated and the corresponding memory block can't be put into offline
state.

Fix it by replacing page_mapcount() with total_mapcount().  With this, the
transparent huge page can be isolated and migrated, and the memory block
can be put into offline state.  Besides, The page's refcount is increased
a bit earlier to avoid the page is released when the check is executed.

Link: https://lkml.kernel.org/r/20221124095523.31061-1-gshan@redhat.com
Fixes: 1da2f328fa64 ("mm,thp,compaction,cma: allow THP migration for CMA allocations")
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reported-by: Zhenyu Zhang <zhenyzha@redhat.com>
Tested-by: Zhenyu Zhang <zhenyzha@redhat.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: <stable@vger.kernel.org> [5.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm: introduce arch_has_hw_nonleaf_pmd_young()

When running as a Xen PV guests commit eed9a328aa1a ("mm: x86: add
CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG") can cause a protection violation in
pmdp_test_and_clear_young():

BUG: unable to handle page fault for address: ffff8880083374d0
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 3026067 P4D 3026067 PUD 3027067 PMD 7fee5067 PTE 8010000008337065
Oops: 0003 [#1] PREEMPT SMP NOPTI
CPU: 7 PID: 158 Comm: kswapd0 Not tainted 6.1.0-rc5-20221118-doflr+ #1
RIP: e030:pmdp_test_and_clear_young+0x25/0x40

This happens because the Xen hypervisor can't emulate direct writes to
page table entries other than PTEs.

This can easily be fixed by introducing arch_has_hw_nonleaf_pmd_young()
similar to arch_has_hw_pte_young() and test that instead of
CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG.

Link: https://lkml.kernel.org/r/20221123064510.16225-1-jgross@suse.com
Fixes: eed9a328aa1a ("mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Acked-by: Yu Zhao <yuzhao@google.com>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Acked-by: David Hildenbrand <david@redhat.com> [core changes]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm: add dummy pmd_young() for architectures not having it

In order to avoid #ifdeffery add a dummy pmd_young() implementation as a
fallback. This is required for the later patch "mm: introduce
arch_has_hw_nonleaf_pmd_young()".

Link: https://lkml.kernel.org/r/fd3ac3cd-7349-6bbd-890a-71a9454ca0b3@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Yu Zhao <yuzhao@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()

Commit da87878010e5 ("mm/damon/sysfs: support online inputs update") made
'damon_sysfs_set_schemes()' to be called for running DAMON context, which
could have schemes.  In the case, DAMON sysfs interface is supposed to
update, remove, or add schemes to reflect the sysfs files.  However, the
code is assuming the DAMON context wouldn't have schemes at all, and
therefore creates and adds new schemes.  As a result, the code doesn't
work as intended for online schemes tuning and could have more than
expected memory footprint.  The schemes are all in the DAMON context, so
it doesn't leak the memory, though.

Remove the wrong asssumption (the DAMON context wouldn't have schemes) in
'damon_sysfs_set_schemes()' to fix the bug.

Link: https://lkml.kernel.org/r/20221122194831.3472-1-sj@kernel.org
Fixes: da87878010e5 ("mm/damon/sysfs: support online inputs update")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [5.19+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"

The latest version of grep claims the egrep is now obsolete so the build
now contains warnings that look like:

egrep: warning: egrep is obsolescent; using grep -E

fix this up by moving the related file to use "grep -E" instead.

  sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/vm`

Here are the steps to install the latest grep:

  wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz
  tar xf grep-3.8.tar.gz
  cd grep-3.8 && ./configure && make
  sudo make install
  export PATH=/usr/local/bin:$PATH

Link: https://lkml.kernel.org/r/1668825419-30584-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()

Syzbot reported a null-ptr-deref bug:

NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP
frequency < 30 seconds
general protection fault, probably for non-canonical address
0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 3603 Comm: segctord Not tainted
6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google
10/11/2022
RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0
fs/nilfs2/alloc.c:608
Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00
00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02
00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7
RSP: 0018:ffffc90003dff830 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d
RDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010
RBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f
R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158
R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0
Call Trace:
  <TASK>
  nilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline]
  nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193
  nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236
  nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940
  nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline]
  nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline]
  nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088
  nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337
  nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568
  nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018
  nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067
  nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]
  nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]
  nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045
  nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379
  nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]
  nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570
  kthread+0x2e4/0x3a0 kernel/kthread.c:376
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
  </TASK>
...

If DAT metadata file is corrupted on disk, there is a case where
req->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during
a b-tree operation that cascadingly updates ancestor nodes of the b-tree,
because nilfs_dat_commit_alloc() for a lower level block can initialize
the blocknr on the same DAT entry between nilfs_dat_prepare_end() and
nilfs_dat_commit_end().

If this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free()
without valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and
causes the NULL pointer dereference above in
nilfs_palloc_commit_free_entry() function, which leads to a crash.

Fix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh
before nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free().

This also calls nilfs_error() in that case to notify that there is a fatal
flaw in the filesystem metadata and prevent further operations.

Link: https://lkml.kernel.org/r/00000000000097c20205ebaea3d6@google.com
Link: https://lkml.kernel.org/r/20221114040441.1649940-1-zhangpeng362@huawei.com
Link: https://lkml.kernel.org/r/20221119120542.17204-1-konishi.ryusuke@gmail.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+ebe05ee8e98f755f61d0@syzkaller.appspotmail.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing

madvise(MADV_DONTNEED) ends up calling zap_page_range() to clear page
tables associated with the address range.  For hugetlb vmas,
zap_page_range will call __unmap_hugepage_range_final.  However,
__unmap_hugepage_range_final assumes the passed vma is about to be removed
and deletes the vma_lock to prevent pmd sharing as the vma is on the way
out.  In the case of madvise(MADV_DONTNEED) the vma remains, but the
missing vma_lock prevents pmd sharing and could potentially lead to issues
with truncation/fault races.

This issue was originally reported here [1] as a BUG triggered in
page_try_dup_anon_rmap.  Prior to the introduction of the hugetlb
vma_lock, __unmap_hugepage_range_final cleared the VM_MAYSHARE flag to
prevent pmd sharing.  Subsequent faults on this vma were confused as
VM_MAYSHARE indicates a sharable vma, but was not set so page_mapping was
not set in new pages added to the page table.  This resulted in pages that
appeared anonymous in a VM_SHARED vma and triggered the BUG.

Address issue by adding a new zap flag ZAP_FLAG_UNMAP to indicate an unmap
call from unmap_vmas().  This is used to indicate the 'final' unmapping of
a hugetlb vma.  When called via MADV_DONTNEED, this flag is not set and
the vm_lock is not deleted.

[1] https://lore.kernel.org/lkml/CAO4mrfdLMXsao9RF4fUE8-Wfde8xmjsKrTNMNC9wjUb6JudD0g@mail.gmail.com/

Link: https://lkml.kernel.org/r/20221114235507.294320-3-mike.kravetz@oracle.com
Fixes: 90e7e7f5ef3f ("mm: enable MADV_DONTNEED for hugetlb mappings")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Wei Chen <harperchen1110@gmail.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

madvise: use zap_page_range_single for madvise dontneed

This series addresses the issue first reported in [1], and fully described
in patch 2.  Patches 1 and 2 address the user visible issue and are tagged
for stable backports.

While exploring solutions to this issue, related problems with mmu
notification calls were discovered.  This is addressed in the patch
"hugetlb: remove duplicate mmu notifications:".  Since there are no user
visible effects, this third is not tagged for stable backports.

Previous discussions suggested further cleanup by removing the
routine zap_page_range.  This is possible because zap_page_range_single
is now exported, and all callers of zap_page_range pass ranges entirely
within a single vma.  This work will be done in a later patch so as not
to distract from this bug fix.

[1] https://lore.kernel.org/lkml/CAO4mrfdLMXsao9RF4fUE8-Wfde8xmjsKrTNMNC9wjUb6JudD0g@mail.gmail.com/

This patch (of 2):

Expose the routine zap_page_range_single to zap a range within a single
vma.  The madvise routine madvise_dontneed_single_vma can use this routine
as it explicitly operates on a single vma.  Also, update the mmu
notification range in zap_page_range_single to take hugetlb pmd sharing
into account.  This is required as MADV_DONTNEED supports hugetlb vmas.

Link: https://lkml.kernel.org/r/20221114235507.294320-1-mike.kravetz@oracle.com
Link: https://lkml.kernel.org/r/20221114235507.294320-2-mike.kravetz@oracle.com
Fixes: 90e7e7f5ef3f ("mm: enable MADV_DONTNEED for hugetlb mappings")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Wei Chen <harperchen1110@gmail.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm: replace VM_WARN_ON to pr_warn if the node is offline with __GFP_THISNODE

Syzbot reported the below splat:

WARNING: CPU: 1 PID: 3646 at include/linux/gfp.h:221 __alloc_pages_node
include/linux/gfp.h:221 [inline]
WARNING: CPU: 1 PID: 3646 at include/linux/gfp.h:221
hpage_collapse_alloc_page mm/khugepaged.c:807 [inline]
WARNING: CPU: 1 PID: 3646 at include/linux/gfp.h:221
alloc_charge_hpage+0x802/0xaa0 mm/khugepaged.c:963
Modules linked in:
CPU: 1 PID: 3646 Comm: syz-executor210 Not tainted
6.1.0-rc1-syzkaller-00454-ga70385240892 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 10/11/2022
RIP: 0010:__alloc_pages_node include/linux/gfp.h:221 [inline]
RIP: 0010:hpage_collapse_alloc_page mm/khugepaged.c:807 [inline]
RIP: 0010:alloc_charge_hpage+0x802/0xaa0 mm/khugepaged.c:963
Code: e5 01 4c 89 ee e8 6e f9 ae ff 4d 85 ed 0f 84 28 fc ff ff e8 70 fc
ae ff 48 8d 6b ff 4c 8d 63 07 e9 16 fc ff ff e8 5e fc ae ff <0f> 0b e9
96 fa ff ff 41 bc 1a 00 00 00 e9 86 fd ff ff e8 47 fc ae
RSP: 0018:ffffc90003fdf7d8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888077f457c0 RSI: ffffffff81cd8f42 RDI: 0000000000000001
RBP: ffff888079388c0c R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f6b48ccf700(0000) GS:ffff8880b9b00000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b48a819f0 CR3: 00000000171e7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
collapse_file+0x1ca/0x5780 mm/khugepaged.c:1715
hpage_collapse_scan_file+0xd6c/0x17a0 mm/khugepaged.c:2156
madvise_collapse+0x53a/0xb40 mm/khugepaged.c:2611
madvise_vma_behavior+0xd0a/0x1cc0 mm/madvise.c:1066
madvise_walk_vmas+0x1c7/0x2b0 mm/madvise.c:1240
do_madvise.part.0+0x24a/0x340 mm/madvise.c:1419
do_madvise mm/madvise.c:1432 [inline]
__do_sys_madvise mm/madvise.c:1432 [inline]
__se_sys_madvise mm/madvise.c:1430 [inline]
__x64_sys_madvise+0x113/0x150 mm/madvise.c:1430
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6b48a4eef9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 15 00 00 90 48 89 f8 48 89
f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b48ccf318 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f6b48af0048 RCX: 00007f6b48a4eef9
RDX: 0000000000000019 RSI: 0000000000600003 RDI: 0000000020000000
RBP: 00007f6b48af0040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6b48aa53a4
R13: 00007f6b48bffcbf R14: 00007f6b48ccf400 R15: 0000000000022000
</TASK>

It is because khugepaged allocates pages with __GFP_THISNODE, but the
preferred node is bogus.  The previous patch fixed the khugepaged code to
avoid allocating page from non-existing node.  But it is still racy
against memory hotremove.  There is no synchronization with the memory
hotplug so it is possible that memory gets offline during a longer taking
scanning.

So this warning still seems not quite helpful because:
  * There is no guarantee the node is online for __GFP_THISNODE context
    for all the callsites.
  * Kernel just fails the allocation regardless the warning, and it looks
    all callsites handle the allocation failure gracefully.

Although while the warning has helped to identify a buggy code, it is not
safe in general and this warning could panic the system with panic-on-warn
configuration which tends to be used surprisingly often.  So replace
VM_WARN_ON to pr_warn().  And the warning will be triggered if
__GFP_NOWARN is set since the allocator would print out warning for such
case if __GFP_NOWARN is not set.

[shy828301@gmail.com: rename nid to this_node and gfp to warn_gfp]
Link: https://lkml.kernel.org/r/20221123193014.153983-1-shy828301@gmail.com
[akpm@linux-foundation.org: fix whitespace]
[akpm@linux-foundation.org: print gfp_mask instead of warn_gfp, per Michel]
Link: https://lkml.kernel.org/r/20221108184357.55614-3-shy828301@gmail.com
Fixes: 7d8faaf15545 ("mm/madvise: introduce MADV_COLLAPSE sync hugepage collapse")
Signed-off-by: Yang Shi <shy828301@gmail.com>
Reported-by: <syzbot+0044b22d177870ee974f@syzkaller.appspotmail.com>
Suggested-by: Michal Hocko <mhocko@suse.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

afs: Fix server->active leak in afs_put_server

The atomic_read was accidentally replaced with atomic_inc_return,
which prevents the server from getting cleaned up and causes rmmod
to hang with a warning:

Can't purge s=00000001

Fixes: 2757a4dc1849 ("afs: Fix access after dec in put functions")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20221130174053.2665818-1-marc.dionne@auristor.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drm/i915: fix TLB invalidation for Gen12 video and compute engines

In case of Gen12 video and compute engines, TLB_INV registers are masked -
to modify one bit, corresponding bit in upper half of the register must
be enabled, otherwise nothing happens.

CVE: CVE-2022-4139
Suggested-by: Chris Wilson <chris.p.wilson@intel.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store")
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'asoc-fix-v6.1-rc7' of https://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.1

Some more fixes for v6.1, some of these are very old and were originally
intended to get sent for v5.18 but got lost in the shuffle when there
was an issue with Linus not liking my branching strategy and I rebuilt
bits of my workflow. The ops changes have been validated by people
looking at real hardware and are how things getting dropped got noticed.

ALSA: dice: fix regression for Lexicon I-ONIX FW810S

For Lexicon I-ONIX FW810S, the call of ioctl(2) with
SNDRV_PCM_IOCTL_HW_PARAMS can returns -ETIMEDOUT. This is a regression due
to the commit 41319eb56e19 ("ALSA: dice: wait just for
NOTIFY_CLOCK_ACCEPTED after GLOBAL_CLOCK_SELECT operation"). The device
does not emit NOTIFY_CLOCK_ACCEPTED notification when accepting
GLOBAL_CLOCK_SELECT operation with the same parameters as current ones.

This commit fixes the regression. When receiving no notification, return
-ETIMEDOUT as long as operating for any change.

Fixes: 41319eb56e19 ("ALSA: dice: wait just for NOTIFY_CLOCK_ACCEPTED after GLOBAL_CLOCK_SELECT operation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20221130130604.29774-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

nvme: fix SRCU protection of nvme_ns_head list

Walking the nvme_ns_head siblings list is protected by the head's srcu
in nvme_ns_head_submit_bio() but not nvme_mpath_revalidate_paths().
Removing namespaces from the list also fails to synchronize the srcu.
Concurrent scan work can therefore cause use-after-frees.

Hold the head's srcu lock in nvme_mpath_revalidate_paths() and
synchronize with the srcu, not the global RCU, in nvme_ns_remove().

Observed the following panic when making NVMe/RDMA connections
with native multipath on the Rocky Linux 8.6 kernel
(it seems the upstream kernel has the same race condition).
Disassembly shows the faulting instruction is cmp 0x50(%rdx),%rcx;
computing capacity != get_capacity(ns->disk).
Address 0x50 is dereferenced because ns->disk is NULL.
The NULL disk appears to be the result of concurrent scan work
freeing the namespace (note the log line in the middle of the panic).

[37314.206036] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
[37314.206036] nvme0n3: detected capacity change from 0 to 11811160064
[37314.299753] PGD 0 P4D 0
[37314.299756] Oops: 0000 [#1] SMP PTI
[37314.299759] CPU: 29 PID: 322046 Comm: kworker/u98:3 Kdump: loaded Tainted: G        W      X --------- -  - 4.18.0-372.32.1.el8test86.x86_64 #1
[37314.299762] Hardware name: Dell Inc. PowerEdge R720/0JP31P, BIOS 2.7.0 05/23/2018
[37314.299763] Workqueue: nvme-wq nvme_scan_work [nvme_core]
[37314.299783] RIP: 0010:nvme_mpath_revalidate_paths+0x26/0xb0 [nvme_core]
[37314.299790] Code: 1f 44 00 00 66 66 66 66 90 55 53 48 8b 5f 50 48 8b 83 c8 c9 00 00 48 8b 13 48 8b 48 50 48 39 d3 74 20 48 8d 42 d0 48 8b 50 20 <48> 3b 4a 50 74 05 f0 80 60 70 ef 48 8b 50 30 48 8d 42 d0 48 39 d3
[37315.058803] RSP: 0018:ffffabe28f913d10 EFLAGS: 00010202
[37315.121316] RAX: ffff927a077da800 RBX: ffff92991dd70000 RCX: 0000000001600000
[37315.206704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff92991b719800
[37315.292106] RBP: ffff929a6b70c000 R08: 000000010234cd4a R09: c0000000ffff7fff
[37315.377501] R10: 0000000000000001 R11: ffffabe28f913a30 R12: 0000000000000000
[37315.462889] R13: ffff92992716600c R14: ffff929964e6e030 R15: ffff92991dd70000
[37315.548286] FS:  0000000000000000(0000) GS:ffff92b87fb80000(0000) knlGS:0000000000000000
[37315.645111] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[37315.713871] CR2: 0000000000000050 CR3: 0000002208810006 CR4: 00000000000606e0
[37315.799267] Call Trace:
[37315.828515]  nvme_update_ns_info+0x1ac/0x250 [nvme_core]
[37315.892075]  nvme_validate_or_alloc_ns+0x2ff/0xa00 [nvme_core]
[37315.961871]  ? __blk_mq_free_request+0x6b/0x90
[37316.015021]  nvme_scan_work+0x151/0x240 [nvme_core]
[37316.073371]  process_one_work+0x1a7/0x360
[37316.121318]  ? create_worker+0x1a0/0x1a0
[37316.168227]  worker_thread+0x30/0x390
[37316.212024]  ? create_worker+0x1a0/0x1a0
[37316.258939]  kthread+0x10a/0x120
[37316.297557]  ? set_kthread_struct+0x50/0x50
[37316.347590]  ret_from_fork+0x35/0x40
[37316.390360] Modules linked in: nvme_rdma nvme_tcp(X) nvme_fabrics nvme_core netconsole iscsi_tcp libiscsi_tcp dm_queue_length dm_service_time nf_conntrack_netlink br_netfilter bridge stp llc overlay nft_chain_nat ipt_MASQUERADE nf_nat xt_addrtype xt_CT nft_counter xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment xt_multiport nft_compat nf_tables libcrc32c nfnetlink dm_multipath tg3 rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm intel_rapl_msr iTCO_wdt iTCO_vendor_support dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm irqbypass crct10dif_pclmul crc32_pclmul mlx5_ib ghash_clmulni_intel ib_uverbs rapl intel_cstate intel_uncore ib_core ipmi_si joydev mei_me pcspkr ipmi_devintf mei lpc_ich wmi ipmi_msghandler acpi_power_meter ext4 mbcache jbd2 sd_mod t10_pi sg mgag200 mlx5_core drm_kms_helper syscopyarea
[37316.390419]  sysfillrect ahci sysimgblt fb_sys_fops libahci drm crc32c_intel libata mlxfw pci_hyperv_intf tls i2c_algo_bit psample dm_mirror dm_region_hash dm_log dm_mod fuse [last unloaded: nvme_core]
[37317.645908] CR2: 0000000000000050

Fixes: e7d65803e2bb ("nvme-multipath: revalidate paths during rescan")
Signed-off-by: Caleb Sander <csander@purestorage.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

nvme-pci: clear the prp2 field when not used

If the prp2 field is not filled in nvme_setup_prp_simple(), the prp2
field is garbage data. According to nvme spec, the prp2 is reserved if
the data transfer does not cross a memory page boundary, so clear it to
zero if it is not used.

Signed-off-by: Lei Rao <lei.rao@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

Merge patch series "riscv: kexec: Fxiup crash_save percpu and machine_kexec_mask_interrupts"

guoren@kernel.org <guoren@kernel.org> says:

From: Guo Ren <guoren@linux.alibaba.com>

Current riscv kexec can't crash_save percpu states and disable
interrupts properly. The patch series fix them, make kexec work correct.

* b4-shazam-merge:
riscv: kexec: Fixup crash_smp_send_stop without multi cores
riscv: kexec: Fixup irq controller broken in kexec crash path

Link: https://lore.kernel.org/r/20221020141603.2856206-1-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

riscv: kexec: Fixup irq controller broken in kexec crash path

If a crash happens on cpu3 and all interrupts are binding on cpu0, the
bad irq routing will cause a crash kernel which can't receive any irq.
Because crash kernel won't clean up all harts' PLIC enable bits in
enable registers. This patch is similar to 9141a003a491 ("ARM: 7316/1:
kexec: EOI active and mask all interrupts in kexec crash path") and
78fd584cdec0 ("arm64: kdump: implement machine_crash_shutdown()"), and
PowerPC also has the same mechanism.

Fixes: fba8a8674f68 ("RISC-V: Add kexec support")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Cc: Nick Kossifidis <mick@ics.forth.gr>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20221020141603.2856206-2-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

riscv: mm: Proper page permissions after initmem free

64-bit RISC-V kernels have the kernel image mapped separately to alias
the linear map. The linear map and the kernel image map are documented
as "direct mapping" and "kernel" respectively in [1].

At image load time, the linear map corresponding to the kernel image
is set to PAGE_READ permission, and the kernel image map is set to
PAGE_READ|PAGE_EXEC.

When the initmem is freed, the pages in the linear map should be
restored to PAGE_READ|PAGE_WRITE, whereas the corresponding pages in
the kernel image map should be restored to PAGE_READ, by removing the
PAGE_EXEC permission.

This is not the case. For 64-bit kernels, only the linear map is
restored to its proper page permissions at initmem free, and not the
kernel image map.

In practise this results in that the kernel can potentially jump to
dead __init code, and start executing invalid instructions, without
getting an exception.

Restore the freed initmem properly, by setting both the kernel image
map to the correct permissions.

[1] Documentation/riscv/vm-layout.rst

Fixes: e5c35fa04019 ("riscv: Map the kernel with correct permissions the first time")
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Alexandre Ghiti <alex@ghiti.fr>
Tested-by: Alexandre Ghiti <alex@ghiti.fr>
Link: https://lore.kernel.org/r/20221115090641.258476-1-bjorn@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

riscv: vdso: fix section overlapping under some conditions

lkp reported a build error, I tried the config and can reproduce
build error as below:

VDSOLD arch/riscv/kernel/vdso/vdso.so.dbg
ld.lld: error: section .note file range overlaps with .text
>>> .note range is [0x7C8, 0x803]
>>> .text range is [0x800, 0x1993]

ld.lld: error: section .text file range overlaps with .dynamic
>>> .text range is [0x800, 0x1993]
>>> .dynamic range is [0x808, 0x937]

ld.lld: error: section .note virtual address range overlaps with .text
>>> .note range is [0x7C8, 0x803]
>>> .text range is [0x800, 0x1993]

Fix it by setting DISABLE_BRANCH_PROFILING which will disable branch
tracing for vdso, thus avoid useless _ftrace_annotated_branch section
and _ftrace_branch section. Although we can also fix it by removing
the hardcoded .text begin address, but I think that's another story
and should be put into another patch.

Link: https://lore.kernel.org/lkml/202210122123.Cc4FPShJ-lkp@intel.com/#r
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20221102170254.1925-1-jszhang@kernel.org
Fixes: ad5d1122b82f ("riscv: use vDSO common flow to reduce the latency of the time-related functions")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

riscv: fix race when vmap stack overflow

Currently, when detecting vmap stack overflow, riscv firstly switches
to the so called shadow stack, then use this shadow stack to call the
get_overflow_stack() to get the overflow stack. However, there's
a race here if two or more harts use the same shadow stack at the same
time.

To solve this race, we introduce spin_shadow_stack atomic var, which
will be swap between its own address and 0 in atomic way, when the
var is set, it means the shadow_stack is being used; when the var
is cleared, it means the shadow_stack isn't being used.

Fixes: 31da94c25aea ("riscv: add VMAP_STACK overflow detection")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Suggested-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20221030124517.2370-1-jszhang@kernel.org
[Palmer: Add AQ to the swap, and also some comments.]
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

Merge tag 'net-6.1-rc8-2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
"Including fixes from bpf, can and wifi.

  Current release - new code bugs:

   - eth: mlx5e:
      - use kvfree() in mlx5e_accel_fs_tcp_create()
      - MACsec, fix RX data path 16 RX security channel limit
      - MACsec, fix memory leak when MACsec device is deleted
      - MACsec, fix update Rx secure channel active field
      - MACsec, fix add Rx security association (SA) rule memory leak

  Previous releases - regressions:

   - wifi: cfg80211: don't allow multi-BSSID in S1G

   - stmmac: set MAC's flow control register to reflect current settings

   - eth: mlx5:
      - E-switch, fix duplicate lag creation
      - fix use-after-free when reverting termination table

  Previous releases - always broken:

   - ipv4: fix route deletion when nexthop info is not specified

   - bpf: fix a local storage BPF map bug where the value's spin lock
     field can get initialized incorrectly

   - tipc: re-fetch skb cb after tipc_msg_validate

   - wifi: wilc1000: fix Information Element parsing

   - packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE

   - sctp: fix memory leak in sctp_stream_outq_migrate()

   - can: can327: fix potential skb leak when netdev is down

   - can: add number of missing netdev freeing on error paths

   - aquantia: do not purge addresses when setting the number of rings

   - wwan: iosm:
      - fix incorrect skb length leading to truncated packet
      - fix crash in peek throughput test due to skb UAF"

* tag 'net-6.1-rc8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (79 commits)
  net: ethernet: renesas: ravb: Fix promiscuous mode after system resumed
  MAINTAINERS: Update maintainer list for chelsio drivers
  ionic: update MAINTAINERS entry
  sctp: fix memory leak in sctp_stream_outq_migrate()
  packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE
  net/mlx5: Lag, Fix for loop when checking lag
  Revert "net/mlx5e: MACsec, remove replay window size limitation in offload path"
  net: marvell: prestera: Fix a NULL vs IS_ERR() check in some functions
  net: tun: Fix use-after-free in tun_detach()
  net: mdiobus: fix unbalanced node reference count
  net: hsr: Fix potential use-after-free
  tipc: re-fetch skb cb after tipc_msg_validate
  mptcp: fix sleep in atomic at close time
  mptcp: don't orphan ssk in mptcp_close()
  dsa: lan9303: Correct stat name
  ipv4: Fix route deletion when nexthop info is not specified
  net: wwan: iosm: fix incorrect skb length
  net: wwan: iosm: fix crash in peek throughput test
  net: wwan: iosm: fix dma_alloc_coherent incompatible pointer type
  net: wwan: iosm: fix kernel test robot reported error
  ...

perf: Fix perf_pending_task() UaF

Per syzbot it is possible for perf_pending_task() to run after the
event is free()'d. There are two related but distinct cases:

- the task_work was already queued before destroying the event;
- destroying the event itself queues the task_work.

The first cannot be solved using task_work_cancel() since
perf_release() itself might be called from a task_work (____fput),
which means the current->task_works list is already empty and
task_work_cancel() won't be able to find the perf_pending_task()
entry.

The simplest alternative is extending the perf_event lifetime to cover
the task_work.

The second is just silly, queueing a task_work while you know the
event is going away makes no sense and is easily avoided by
re-arranging how the event is marked STATE_DEAD and ensuring it goes
through STATE_OFF on the way down.

Reported-by: syzbot+9228d6098455bb209ec8@syzkaller.appspotmail.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Marco Elver <elver@google.com>

net: ethernet: renesas: ravb: Fix promiscuous mode after system resumed

After system resumed on some environment board, the promiscuous mode
is disabled because the SoC turned off. So, call ravb_set_rx_mode() in
the ravb_resume() to fix the issue.

Reported-by: Tho Vu <tho.vu.wh@renesas.com>
Fixes: 0184165b2f42 ("ravb: add sleep PM suspend/resume support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20221128065604.1864391-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS: Update maintainer list for chelsio drivers

This updates the maintainers for chelsio inline crypto drivers and
chelsio crypto drivers.

Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Link: https://lore.kernel.org/r/20221128231348.8225-1-ayush.sawal@chelsio.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

ionic: update MAINTAINERS entry

Now that Pensando is a part of AMD we need to update
a couple of addresses. We're keeping the mailing list
address for the moment, but that will likely change in
the near future.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Link: https://lore.kernel.org/r/20221129011734.20849-1-shannon.nelson@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

sctp: fix memory leak in sctp_stream_outq_migrate()

When sctp_stream_outq_migrate() is called to release stream out resources,
the memory pointed to by prio_head in stream out is not released.

The memory leak information is as follows:
unreferenced object 0xffff88801fe79f80 (size 64):
   comm "sctp_repo", pid 7957, jiffies 4294951704 (age 36.480s)
   hex dump (first 32 bytes):
     80 9f e7 1f 80 88 ff ff 80 9f e7 1f 80 88 ff ff  ................
     90 9f e7 1f 80 88 ff ff 90 9f e7 1f 80 88 ff ff  ................
   backtrace:
     [<ffffffff81b215c6>] kmalloc_trace+0x26/0x60
     [<ffffffff88ae517c>] sctp_sched_prio_set+0x4cc/0x770
     [<ffffffff88ad64f2>] sctp_stream_init_ext+0xd2/0x1b0
     [<ffffffff88aa2604>] sctp_sendmsg_to_asoc+0x1614/0x1a30
     [<ffffffff88ab7ff1>] sctp_sendmsg+0xda1/0x1ef0
     [<ffffffff87f765ed>] inet_sendmsg+0x9d/0xe0
     [<ffffffff8754b5b3>] sock_sendmsg+0xd3/0x120
     [<ffffffff8755446a>] __sys_sendto+0x23a/0x340
     [<ffffffff87554651>] __x64_sys_sendto+0xe1/0x1b0
     [<ffffffff89978b49>] do_syscall_64+0x39/0xb0
     [<ffffffff89a0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

Link: https://syzkaller.appspot.com/bug?exrid=29c402e56c4760763cc0
Fixes: 637784ade221 ("sctp: introduce priority based stream scheduler")
Reported-by: syzbot+29c402e56c4760763cc0@syzkaller.appspotmail.com
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20221126031720.378562-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE

CHECKSUM_COMPLETE signals that skb->csum stores the sum over the
entire packet. It does not imply that an embedded l4 checksum
field has been validated.

Fixes: 682f048bd494 ("af_packet: pass checksum validation status to the user")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20221128161812.640098-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/mlx5: Lag, Fix for loop when checking lag

The cited commit adds a for loop to check if each port supports lag
or not. But dev is not initialized correctly. Fix it by initializing
dev for each iteration.

Fixes: e87c6a832f88 ("net/mlx5: E-switch, Fix duplicate lag creation")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reported-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20221129093006.378840-2-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Revert "net/mlx5e: MACsec, remove replay window size limitation in offload path"

This reverts commit c0071be0e16c461680d87b763ba1ee5e46548fde.

The cited commit removed the validity checks which initialized the
window_sz and never removed the use of the now uninitialized variable,
so now we are left with wrong value in the window size and the following
clang warning: [-Wuninitialized]
drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c:232:45:
warning: variable 'window_sz' is uninitialized when used here
MLX5_SET(macsec_aso, aso_ctx, window_size, window_sz);

Revet at this time to address the clang issue due to lack of time to
test the proper solution.

Fixes: c0071be0e16c ("net/mlx5e: MACsec, remove replay window size limitation in offload path")
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reported-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20221129093006.378840-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

mmc: sdhci: Fix voltage switch delay

Commit 20b92a30b561 ("mmc: sdhci: update signal voltage switch code")
removed voltage switch delays from sdhci because mmc core had been
enhanced to support them. However that assumed that sdhci_set_ios()
did a single clock change, which it did not, and so the delays in mmc
core, which should have come after the first clock change, were not
effective.

Fix by avoiding re-configuring UHS and preset settings when the clock
is turning on and the settings have not changed. That then also avoids
the associated clock changes, so that then sdhci_set_ios() does a single
clock change when voltage switching, and the mmc core delays become
effective.

To do that has meant keeping track of driver strength (host->drv_type),
and cases of reinitialization (host->reinit_uhs).

Note also, the 'turning_on_clk' restriction should not be necessary
but is done to minimize the impact of the change on stable kernels.

Fixes: 20b92a30b561 ("mmc: sdhci: update signal voltage switch code")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20221128133259.38305-2-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

mmc: mtk-sd: Fix missing clk_disable_unprepare in msdc_of_clock_parse()

The clk_disable_unprepare() should be called in the error handling
of devm_clk_bulk_get_optional, fix it by replacing devm_clk_get_optional
and clk_prepare_enable by devm_clk_get_optional_enabled.

Fixes: f5eccd94b63f ("mmc: mediatek: Add subsys clock control for MT8192 msdc")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221125090141.3626747-1-cuigaosheng1@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

net: marvell: prestera: Fix a NULL vs IS_ERR() check in some functions

rhashtable_lookup_fast() returns NULL when failed instead of error
pointer.

Fixes: 396b80cb5cc8 ("net: marvell: prestera: Add neighbour cache accounting")
Fixes: 0a23ae237171 ("net: marvell: prestera: Add router nexthops ABI")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Link: https://lore.kernel.org/r/20221125012751.23249-1-shangxiaojing@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

net: tun: Fix use-after-free in tun_detach()

syzbot reported use-after-free in tun_detach() [1]. This causes call
trace like below:

==================================================================
BUG: KASAN: use-after-free in notifier_call_chain+0x1ee/0x200 kernel/notifier.c:75
Read of size 8 at addr ffff88807324e2a8 by task syz-executor.0/3673

CPU: 0 PID: 3673 Comm: syz-executor.0 Not tainted 6.1.0-rc5-syzkaller-00044-gcc675d22e422 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x15e/0x461 mm/kasan/report.c:395
kasan_report+0xbf/0x1f0 mm/kasan/report.c:495
notifier_call_chain+0x1ee/0x200 kernel/notifier.c:75
call_netdevice_notifiers_info+0x86/0x130 net/core/dev.c:1942
call_netdevice_notifiers_extack net/core/dev.c:1983 [inline]
call_netdevice_notifiers net/core/dev.c:1997 [inline]
netdev_wait_allrefs_any net/core/dev.c:10237 [inline]
netdev_run_todo+0xbc6/0x1100 net/core/dev.c:10351
tun_detach drivers/net/tun.c:704 [inline]
tun_chr_close+0xe4/0x190 drivers/net/tun.c:3467
__fput+0x27c/0xa90 fs/file_table.c:320
task_work_run+0x16f/0x270 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xb3d/0x2a30 kernel/exit.c:820
do_group_exit+0xd4/0x2a0 kernel/exit.c:950
get_signal+0x21b1/0x2440 kernel/signal.c:2858
arch_do_signal_or_restart+0x86/0x2300 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd

The cause of the issue is that sock_put() from __tun_detach() drops
last reference count for struct net, and then notifier_call_chain()
from netdev_state_change() accesses that struct net.

This patch fixes the issue by calling sock_put() from tun_detach()
after all necessary accesses for the struct net has done.

Fixes: 83c1f36f9880 ("tun: send netlink notification when the device is modified")
Reported-by: syzbot+106f9b687cd64ee70cd1@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=96eb7f1ce75ef933697f24eeab928c4a716edefe
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Link: https://lore.kernel.org/r/20221124175134.1589053-1-syoshida@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drm/i915: Never return 0 if not all requests retired

Users of intel_gt_retire_requests_timeout() expect 0 return value on
success. However, we have no protection from passing back 0 potentially
returned by a call to dma_fence_wait_timeout() when it succedes right
after its timeout has expired.

Replace 0 with -ETIME before potentially using the timeout value as return
code, so -ETIME is returned if there are still some requests not retired
after timeout, 0 otherwise.

v3: Use conditional expression, more compact but also better reflecting
intention standing behind the change.

v2: Move the added lines down so flush_submission() is not affected.

Fixes: f33a8a51602c ("drm/i915: Merge wait_for_timelines with retire_request")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221121145655.75141-3-janusz.krzysztofik@linux.intel.com
(cherry picked from commit f301a29f143760ce8d3d6b6a8436d45d3448cde6)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

drm/i915: Fix negative value passed as remaining time

Commit b97060a99b01 ("drm/i915/guc: Update intel_gt_wait_for_idle to work
with GuC") extended the API of intel_gt_retire_requests_timeout() with an
extra argument 'remaining_timeout', intended for passing back unconsumed
portion of requested timeout when 0 (success) is returned. However, when
request retirement happens to succeed despite an error returned by a call
to dma_fence_wait_timeout(), that error code (a negative value) is passed
back instead of remaining time. If we then pass that negative value
forward as requested timeout to intel_uc_wait_for_idle(), an explicit BUG
will be triggered.

If request retirement succeeds but an error code is passed back via
remaininig_timeout, we may have no clue on how much of the initial timeout
might have been left for spending it on waiting for GuC to become idle.
OTOH, since all pending requests have been successfully retired, that
error code has been already ignored by intel_gt_retire_requests_timeout(),
then we shouldn't fail.

Assume no more time has been left on error and pass 0 timeout value to
intel_uc_wait_for_idle() to give it a chance to return success if GuC is
already idle.

v3: Don't fail on any error passed back via remaining_timeout.

v2: Fix the issue on the caller side, not the provider.

Fixes: b97060a99b01 ("drm/i915/guc: Update intel_gt_wait_for_idle to work with GuC")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: stable@vger.kernel.org # v5.15+
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221121145655.75141-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit f235dbd5b768e238d365fd05d92de5a32abc1c1f)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

drm/i915: Remove non-existent pipes from bigjoiner pipe mask

bigjoiner_pipes() doesn't consider that:
- RKL only has three pipes
- some pipes may be fused off

This means that intel_atomic_check_bigjoiner() won't reject
all configurations that would need a non-existent pipe.
Instead we just keep on rolling witout actually having
reserved the slave pipe we need.

It's possible that we don't outright explode anywhere due to
this since eg. for_each_intel_crtc_in_pipe_mask() will only
walk the crtcs we've registered even though the passed in
pipe_mask asks for more of them. But clearly the thing won't
do what is expected of it when the required pipes are not
present.

Fix the problem by consulting the device info pipe_mask already
in bigjoiner_pipes().

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221118185201.10469-1-ville.syrjala@linux.intel.com
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
(cherry picked from commit f1c87a94a1087a26f41007ee83264033007421b5)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

drm/i915/mtl: Fix dram info readout

MEM_SS_INFO_GLOBAL Register info read from the hardware is cached in val. However
the variable is being modified when determining the DRAM type thereby clearing out
the channels and qgv info extracted later in the function xelpdp_get_dram_info. Preserve
the register value and use extracted fields in the switch statement.

Fixes: 825477e77912 ("drm/i915/mtl: Obtain SAGV values from MMIO instead of GT pcode mailbox")
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221117213015.584417-1-radhakrishna.sripada@intel.com
(cherry picked from commit ec35c41d91052a3a15dd3767075620af448b8030)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

afs: Fix fileserver probe RTT handling

The fileserver probing code attempts to work out the best fileserver to
use for a volume by retrieving the RTT calculated by AF_RXRPC for the
probe call sent to each server and comparing them. Sometimes, however,
no RTT estimate is available and rxrpc_kernel_get_srtt() returns false,
leading good fileservers to be given an RTT of UINT_MAX and thus causing
the rotation algorithm to ignore them.

Fix afs_select_fileserver() to ignore rxrpc_kernel_get_srtt()'s return
value and just take the estimated RTT it provides - which will be capped
at 1 second.

Fixes: 1d4adfaf6574 ("rxrpc: Make rxrpc_kernel_get_srtt() indicate validity")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/166965503999.3392585.13954054113218099395.stgit@warthog.procyon.org.uk/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

net: mdiobus: fix unbalanced node reference count

I got the following report while doing device(mscc-miim) load test
with CONFIG_OF_UNITTEST and CONFIG_OF_DYNAMIC enabled:

  OF: ERROR: memory leak, expected refcount 1 instead of 2,
  of_node_get()/of_node_put() unbalanced - destroy cset entry:
  attach overlay node /spi/soc@0/mdio@7107009c/ethernet-phy@0

If the 'fwnode' is not an acpi node, the refcount is get in
fwnode_mdiobus_phy_device_register(), but it has never been
put when the device is freed in the normal path. So call
fwnode_handle_put() in phy_device_release() to avoid leak.

If it's an acpi node, it has never been get, but it's put
in the error path, so call fwnode_handle_get() before
phy_device_register() to keep get/put operation balanced.

Fixes: bc1bee3b87ee ("net: mdiobus: Introduce fwnode_mdiobus_register_phy()")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20221124150130.609420-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net: hsr: Fix potential use-after-free

The skb is delivered to netif_rx() which may free it, after calling this,
dereferencing skb may trigger use-after-free.

Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20221125075724.27912-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tipc: re-fetch skb cb after tipc_msg_validate

As the call trace shows, the original skb was freed in tipc_msg_validate(),
and dereferencing the old skb cb would cause an use-after-free crash.

  BUG: KASAN: use-after-free in tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]
  Call Trace:
   <IRQ>
   tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]
   tipc_crypto_rcv+0xd32/0x1ec0 [tipc]
   tipc_rcv+0x744/0x1150 [tipc]
  ...
  Allocated by task 47078:
   kmem_cache_alloc_node+0x158/0x4d0
   __alloc_skb+0x1c1/0x270
   tipc_buf_acquire+0x1e/0xe0 [tipc]
   tipc_msg_create+0x33/0x1c0 [tipc]
   tipc_link_build_proto_msg+0x38a/0x2100 [tipc]
   tipc_link_timeout+0x8b8/0xef0 [tipc]
   tipc_node_timeout+0x2a1/0x960 [tipc]
   call_timer_fn+0x2d/0x1c0
  ...
  Freed by task 47078:
   tipc_msg_validate+0x7b/0x440 [tipc]
   tipc_crypto_rcv_complete+0x4b5/0x2240 [tipc]
   tipc_crypto_rcv+0xd32/0x1ec0 [tipc]
   tipc_rcv+0x744/0x1150 [tipc]

This patch fixes it by re-fetching the skb cb from the new allocated skb
after calling tipc_msg_validate().

Fixes: fc1b6d6de220 ("tipc: introduce TIPC encryption & authentication")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/1b1cdba762915325bd8ef9a98d0276eb673df2a5.1669398403.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge branch 'mptcp-more-fixes-for-6-1'

Matthieu Baerts says:

====================
mptcp: More fixes for 6.1

Patch 1 makes sure data received after a close will still be processed
and acked as exepected. This is a regression for a commit introduced
in v5.11.

Patch 2 fixes a kernel deadlock found when working on validating TFO
with a listener MPTCP socket. This is not directly linked to TFO but
it is easier to reproduce the issue with it. This fixes a bug introduced
by a commit from v6.0.
====================

Link: https://lore.kernel.org/r/20221128154239.1999234-1-matthieu.baerts@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

mptcp: fix sleep in atomic at close time

Matt reported a splat at msk close time:

    BUG: sleeping function called from invalid context at net/mptcp/protocol.c:2877
    in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 155, name: packetdrill
    preempt_count: 201, expected: 0
    RCU nest depth: 0, expected: 0
    4 locks held by packetdrill/155:
    #0: ffff888001536990 (&sb->s_type->i_mutex_key#6){+.+.}-{3:3}, at: __sock_release (net/socket.c:650)
    #1: ffff88800b498130 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close (net/mptcp/protocol.c:2973)
    #2: ffff88800b49a130 (sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk (net/mptcp/protocol.c:2363)
    #3: ffff88800b49a0b0 (slock-AF_INET){+...}-{2:2}, at: __lock_sock_fast (include/net/sock.h:1820)
    Preemption disabled at:
    0x0
    CPU: 1 PID: 155 Comm: packetdrill Not tainted 6.1.0-rc5 #365
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
    Call Trace:
    <TASK>
    dump_stack_lvl (lib/dump_stack.c:107 (discriminator 4))
    __might_resched.cold (kernel/sched/core.c:9891)
    __mptcp_destroy_sock (include/linux/kernel.h:110)
    __mptcp_close (net/mptcp/protocol.c:2959)
    mptcp_subflow_queue_clean (include/net/sock.h:1777)
    __mptcp_close_ssk (net/mptcp/protocol.c:2363)
    mptcp_destroy_common (net/mptcp/protocol.c:3170)
    mptcp_destroy (include/net/sock.h:1495)
    __mptcp_destroy_sock (net/mptcp/protocol.c:2886)
    __mptcp_close (net/mptcp/protocol.c:2959)
    mptcp_close (net/mptcp/protocol.c:2974)
    inet_release (net/ipv4/af_inet.c:432)
    __sock_release (net/socket.c:651)
    sock_close (net/socket.c:1367)
    __fput (fs/file_table.c:320)
    task_work_run (kernel/task_work.c:181 (discriminator 1))
    exit_to_user_mode_prepare (include/linux/resume_user_mode.h:49)
    syscall_exit_to_user_mode (kernel/entry/common.c:130)
    do_syscall_64 (arch/x86/entry/common.c:87)
    entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)

We can't call mptcp_close under the 'fast' socket lock variant, replace
it with a sock_lock_nested() as the relevant code is already under the
listening msk socket lock protection.

Reported-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/316
Fixes: 30e51b923e43 ("mptcp: fix unreleased socket in accept queue")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

mptcp: don't orphan ssk in mptcp_close()

All of the subflows of a msk will be orphaned in mptcp_close(), which
means the subflows are in DEAD state. After then, DATA_FIN will be sent,
and the other side will response with a DATA_ACK for this DATA_FIN.

However, if the other side still has pending data, the data that received
on these subflows will not be passed to the msk, as they are DEAD and
subflow_data_ready() will not be called in tcp_data_ready(). Therefore,
these data can't be acked, and they will be retransmitted again and again,
until timeout.

Fix this by setting ssk->sk_socket and ssk->sk_wq to 'NULL', instead of
orphaning the subflows in __mptcp_close(), as Paolo suggested.

Fixes: e16163b6e2b7 ("mptcp: refactor shutdown and close")
Reviewed-by: Biao Jiang <benbjiang@tencent.com>
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

dsa: lan9303: Correct stat name

This patch changes the reported ethtool statistics for the lan9303
family of parts covered by this driver.

The TxUnderRun statistic label is renamed to RxShort to accurately
reflect what stat the device is reporting. I did not reorder the
statistics as that might cause problems with existing user code that
are expecting the stats at a certain offset.

Fixes: a1292595e006 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303")
Signed-off-by: Jerry Ray <jerry.ray@microchip.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20221128193559.6572-1-jerry.ray@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'wireless-2022-11-28' of git://git./linux/kernel/git/wireless/wireless

Kalle Valo says:

====================
wireless fixes for v6.1

Third, and hopefully final, set of fixes for v6.1. We are marking the
rsi driver as orphan, have some Information Element parsing fixes to
wilc1000 driver and three small fixes to the stack.

* tag 'wireless-2022-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration
  wifi: cfg80211: don't allow multi-BSSID in S1G
  wifi: cfg80211: fix buffer overflow in elem comparison
  wifi: wilc1000: validate number of channels
  wifi: wilc1000: validate length of IEEE80211_P2P_ATTR_CHANNEL_LIST attribute
  wifi: wilc1000: validate length of IEEE80211_P2P_ATTR_OPER_CHANNEL attribute
  wifi: wilc1000: validate pairwise and authentication suite offsets
  MAINTAINERS: mark rsi wifi driver as orphan
====================

Link: https://lore.kernel.org/r/20221128113513.6F459C433C1@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'for-netdev' of https://git./linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
bpf 2022-11-25

We've added 10 non-merge commits during the last 8 day(s) which contain
a total of 7 files changed, 48 insertions(+), 30 deletions(-).

The main changes are:

1) Several libbpf ringbuf fixes related to probing for its availability,
   size overflows when mmaping a 2G ringbuf and rejection of invalid
   reservationsizes, from Hou Tao.

2) Fix a buggy return pointer in libbpf for attach_raw_tp function,
   from Jiri Olsa.

3) Fix a local storage BPF map bug where the value's spin lock field
   can get initialized incorrectly, from Xu Kuohai.

4) Two follow-up fixes in kprobe_multi BPF selftests for BPF CI,
   from Jiri Olsa.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  selftests/bpf: Make test_bench_attach serial
  selftests/bpf: Filter out default_idle from kprobe_multi bench
  bpf: Set and check spin lock value in sk_storage_map_test
  bpf: Do not copy spin lock field from user in bpf_selem_alloc
  libbpf: Check the validity of size in user_ring_buffer__reserve()
  libbpf: Handle size overflow for user ringbuf mmap
  libbpf: Handle size overflow for ringbuf mmap
  libbpf: Use page size as max_entries when probing ring buffer map
  bpf, perf: Use subprog name when reporting subprog ksymbol
  libbpf: Use correct return pointer in attach_raw_tp
====================

Link: https://lore.kernel.org/r/20221125001034.29473-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

ipv4: Fix route deletion when nexthop info is not specified

When the kernel receives a route deletion request from user space it
tries to delete a route that matches the route attributes specified in
the request.

If only prefix information is specified in the request, the kernel
should delete the first matching FIB alias regardless of its associated
FIB info. However, an error is currently returned when the FIB info is
backed by a nexthop object:

# ip nexthop add id 1 via 192.0.2.2 dev dummy10
# ip route add 198.51.100.0/24 nhid 1
# ip route del 198.51.100.0/24
RTNETLINK answers: No such process

Fix by matching on such a FIB info when legacy nexthop attributes are
not specified in the request. An earlier check already covers the case
where a nexthop ID is specified in the request.

Add tests that cover these flows. Before the fix:

# ./fib_nexthops.sh -t ipv4_fcnal
...
TEST: Delete route when not specifying nexthop attributes           [FAIL]

Tests passed:  11
Tests failed:   1

After the fix:

# ./fib_nexthops.sh -t ipv4_fcnal
...
TEST: Delete route when not specifying nexthop attributes           [ OK ]

Tests passed:  12
Tests failed:   0

No regressions in other tests:

# ./fib_nexthops.sh
...
Tests passed: 228
Tests failed:   0

# ./fib_tests.sh
...
Tests passed: 186
Tests failed:   0

Cc: stable@vger.kernel.org
Reported-by: Jonas Gorski <jonas.gorski@gmail.com>
Tested-by: Jonas Gorski <jonas.gorski@gmail.com>
Fixes: 493ced1ac47c ("ipv4: Allow routes to use nexthop objects")
Fixes: 6bf92d70e690 ("net: ipv4: fix route with nexthop object delete warning")
Fixes: 61b91eb33a69 ("ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20221124210932.2470010-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

riscv: Sync efi page table's kernel mappings before switching

The EFI page table is initially created as a copy of the kernel page table.
With VMAP_STACK enabled, kernel stacks are allocated in the vmalloc area:
if the stack is allocated in a new PGD (one that was not present at the
moment of the efi page table creation or not synced in a previous vmalloc
fault), the kernel will take a trap when switching to the efi page table
when the vmalloc kernel stack is accessed, resulting in a kernel panic.

Fix that by updating the efi kernel mappings before switching to the efi
page table.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Fixes: b91540d52a08 ("RISC-V: Add EFI runtime services")
Tested-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20221121133303.1782246-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

riscv: Fix NR_CPUS range conditions

The conditions reference the symbol SBI_V01, which does not exist. The
correct symbol is RISCV_SBI_V01.

Fixes: e623715f3d67 ("RISC-V: Increase range and default value of NR_CPUS")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221126061557.3541-1-samuel@sholland.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

Merge tag 'devicetree-fixes-for-6.1-2' of git://git./linux/kernel/git/robh/linux

Pull devicetree fix from Rob Herring:

- Fix DT node reference counting for of_fwnode_get_reference_args()
exit path

* tag 'devicetree-fixes-for-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: property: decrement node refcount in of_fwnode_get_reference_args()