Currently the way polling works on the ring buffer is broken. It will
return immediately if there's any data in the ring buffer whereas a read
will block until the watermark (defined by the tracefs buffer_percent file)
is hit.

That is, a select() or poll() will return as if there's data available,
but then the following read will block. This is broken for the way
select()s and poll()s are supposed to work.

Have the polling on the ring buffer also block the same way reads and
splice does on the ring buffer.

Link: https://lkml.kernel.org/r/20221020231427.41be3f26@gandalf.local.home

Cc: Linux Trace Kernel <linux-trace-kernel@vger.kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Primiano Tucci <primiano@google.com>
Cc: stable@vger.kernel.org
Fixes: 1e0d6714 ("ring-buffer: Do not wake up a splice waiter when page is not full")
Signed-off-by: NSteven Rostedt (Google) <rostedt@goodmis.org>

Pull MIPS fixes from Thomas Bogendoerfer:

 - fix jump label branch range check

 - check kmalloc failures in Loongson64 kexec

 - fix builds with clang-14

 - fix char/int handling in pic32

* tag 'mips-fixes_6.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: pic32: treat port as signed integer
  MIPS: jump_label: Fix compat branch range check
  mips: alchemy: gpio: Include the right header
  MIPS: Loongson64: Add WARN_ON on kexec related kmalloc failed
  MIPS: fix duplicate definitions for exported symbols
  mips: boot/compressed: use __NO_FORTIFY

Pull EFI fixes from Ard Biesheuvel:

 - Force the use of SetVirtualAddressMap() on Ampera Altra arm64
   machines, which crash in SetTime() if no virtual remapping is used

   This is the first time we've added an SMBIOS based quirk on arm64,
   but fortunately, we can just call a EFI protocol to grab the type #1
   SMBIOS record when running in the stub, so we don't need all the
   machinery we have in the kernel proper to parse SMBIOS data.

 - Drop a spurious warning on misaligned runtime regions when using 16k
   or 64k pages on arm64

* tag 'efi-fixes-for-v6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  arm64: efi: Fix handling of misaligned runtime regions and drop warning
  arm64: efi: Force the use of SetVirtualAddressMap() on Altra machines

Pull SCSI fixes from James Bottomley:
 "Three small fixes, all in drivers.

  The sas one is in an unlikely error leg, the debug one is to make it
  more standards conformant and the ibmvfc one is to fix a user visible
  bug where a failover could lose all paths to the device"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: scsi_debug: Make the READ CAPACITY response compliant with ZBC
  scsi: scsi_transport_sas: Fix error handling in sas_phy_add()
  scsi: ibmvfc: Avoid path failures during live migration

Pull additional sound fix from Takashi Iwai:
 "A regression fix for the latest memalloc helper change"

* tag 'sound-fix-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: memalloc: Try dma_alloc_noncontiguous() at first

The latest fix for the non-contiguous memalloc helper changed the
allocation method for a non-IOMMU system to use only the fallback
allocator.  This should have worked, but it caused a problem sometimes
when too many non-contiguous pages are allocated that can't be treated
by HD-audio controller.

As a quirk workaround, go back to the original strategy: use
dma_alloc_noncontiguous() at first, and apply the fallback only when
it fails, but only for non-IOMMU case.

We'll need a better fix in the fallback code as well, but this
workaround should paper over most cases.

Fixes: 9736a325 ("ALSA: memalloc: Don't fall back for SG-buffer with IOMMU")
Reported-by: NLinus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/CAHk-=wgSH5ubdvt76gNwa004ooZAEJL_1Q-Fyw5M2FDdqL==dg@mail.gmail.com
Link: https://lore.kernel.org/r/20221112084718.3305-1-tiwai@suse.deSigned-off-by: NTakashi Iwai <tiwai@suse.de>

Pull ata fixes from Damien Le Moal:
 "Several libata generic code fixes for rc5:

   - Add missing translation of the SYNCHRONIZE CACHE 16 scsi command as
     this command is mandatory for host-managed ZBC drives.

     The lack of support for it in libata-scsi was causing issues with
     some passthrough applications using ZBC drives (from Shin'ichiro).

   - Fix the error path of libata-transport host, port, link and device
     attributes initialization (from Yingliang).

   - Prevent issuing new commands to a drive that is in the NCQ error
     state and undergoing recovery (From Niklas).

     This bug went unnoticed for a long time as commands issued to a
     drive in error state are aborted immediately and retried by the
     scsi layer, hiding the useless abort-and-retry sequence"

* tag 'ata-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: libata-core: do not issue non-internal commands once EH is pending
  ata: libata-transport: fix error handling in ata_tdev_add()
  ata: libata-transport: fix error handling in ata_tlink_add()
  ata: libata-transport: fix error handling in ata_tport_add()
  ata: libata-transport: fix double ata_host_put() in ata_tport_add()
  ata: libata-scsi: fix SYNCHRONIZE CACHE (16) command failure

Pull misc hotfixes from Andrew Morton:
 "22 hotfixes.

  Eight are cc:stable and the remainder address issues which were
  introduced post-6.0 or which aren't considered serious enough to
  justify a -stable backport"

* tag 'mm-hotfixes-stable-2022-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (22 commits)
  docs: kmsan: fix formatting of "Example report"
  mm/damon/dbgfs: check if rm_contexts input is for a real context
  maple_tree: don't set a new maximum on the node when not reusing nodes
  maple_tree: fix depth tracking in maple_state
  arch/x86/mm/hugetlbpage.c: pud_huge() returns 0 when using 2-level paging
  fs: fix leaked psi pressure state
  nilfs2: fix use-after-free bug of ns_writer on remount
  x86/traps: avoid KMSAN bugs originating from handle_bug()
  kmsan: make sure PREEMPT_RT is off
  Kconfig.debug: ensure early check for KMSAN in CONFIG_KMSAN_WARN
  x86/uaccess: instrument copy_from_user_nmi()
  kmsan: core: kmsan_in_runtime() should return true in NMI context
  mm: hugetlb_vmemmap: include missing linux/moduleparam.h
  mm/shmem: use page_mapping() to detect page cache for uffd continue
  mm/memremap.c: map FS_DAX device memory as decrypted
  Partly revert "mm/thp: carry over dirty bit when thp splits on pmd"
  nilfs2: fix deadlock in nilfs_count_free_blocks()
  mm/mmap: fix memory leak in mmap_region()
  hugetlbfs: don't delete error page from pagecache
  maple_tree: reorganize testing to restore module testing
  ...

Pull arm64 fixes from Catalin Marinas:

 - Another fix for rodata=full. Since rodata= is not a simple boolean on
   arm64 (accepting 'full' as well), it got inadvertently broken by
   changes in the core code. If rodata=on is the default and rodata=off
   is passed on the kernel command line, rodata_full is never disabled

 - Fix gcc compiler warning of shifting 0xc0 into bits 31:24 without an
   explicit conversion to u32 (triggered by the AMPERE1 MIDR definition)

 - Include asm/ptrace.h in asm/syscall_wrapper.h to fix an incomplete
   struct pt_regs type causing the BPF verifier to refuse to load a
   tracing program which accesses pt_regs

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/syscall: Include asm/ptrace.h in syscall_wrapper header.
  arm64: Fix bit-shifting UB in the MIDR_CPU_MODEL() macro
  arm64: fix rodata=full again

While the ATA specification states that a device should return command
aborted for all commands queued after the device has entered error state,
since ATA only keeps the sense data for the latest command (in non-NCQ
case), we really don't want to send block layer commands to the device
after it has entered error state. (Only ATA EH commands should be sent,
to read the sense data etc.)

Currently, scsi_queue_rq() will check if scsi_host_in_recovery()
(state is SHOST_RECOVERY), and if so, it will _not_ issue a command via:
scsi_dispatch_cmd() -> host->hostt->queuecommand() (ata_scsi_queuecmd())
-> __ata_scsi_queuecmd() -> ata_scsi_translate() -> ata_qc_issue()

Before commit e494f6a7 ("[SCSI] improved eh timeout handler"),
when receiving a TFES error IRQ, the call chain looked like this:
ahci_error_intr() -> ata_port_abort() -> ata_do_link_abort() ->
ata_qc_complete() -> ata_qc_schedule_eh() -> blk_abort_request() ->
blk_rq_timed_out() -> q->rq_timed_out_fn() (scsi_times_out()) ->
scsi_eh_scmd_add() -> scsi_host_set_state(shost, SHOST_RECOVERY)

Which meant that as soon as an error IRQ was serviced, SHOST_RECOVERY
would be set.

However, after commit e494f6a7 ("[SCSI] improved eh timeout handler"),
scsi_times_out() will instead call scsi_abort_command() which will queue
delayed work, and the worker function scmd_eh_abort_handler() will call
scsi_eh_scmd_add(), which calls scsi_host_set_state(shost, SHOST_RECOVERY).

So now, after the TFES error IRQ has been serviced, we need to wait for
the SCSI workqueue to run its work before SHOST_RECOVERY gets set.

It is worth noting that, even before commit e494f6a7 ("[SCSI] improved
eh timeout handler"), we could receive an error IRQ from the time when
scsi_queue_rq() checks scsi_host_in_recovery(), to the time when
ata_scsi_queuecmd() is actually called.

In order to handle both the delayed setting of SHOST_RECOVERY and the
window where we can receive an error IRQ, add a check against
ATA_PFLAG_EH_PENDING (which gets set when servicing the error IRQ),
inside ata_scsi_queuecmd() itself, while holding the ap->lock.
(Since the ap->lock is held while servicing IRQs.)

Fixes: e494f6a7 ("[SCSI] improved eh timeout handler")
Signed-off-by: NNiklas Cassel <niklas.cassel@wdc.com>
Tested-by: NJohn Garry <john.g.garry@oracle.com>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>

Pull block fixes from Jens Axboe:

 - NVMe pull request via Christoph:
        - Quiet user passthrough command errors (Keith Busch)
        - Fix memory leak in nvmet_subsys_attr_model_store_locked
        - Fix a memory leak in nvmet-auth (Sagi Grimberg)

 - Fix a potential NULL point deref in bfq (Yu)

 - Allocate command/response buffers separately for DMA for sed-opal,
   rather than rely on embedded alignment (Serge)

* tag 'block-6.1-2022-11-11' of git://git.kernel.dk/linux:
  nvmet: fix a memory leak
  nvmet: fix memory leak in nvmet_subsys_attr_model_store_locked
  nvme: quiet user passthrough command errors
  block: sed-opal: kmalloc the cmd/resp buffers
  block, bfq: fix null pointer dereference in bfq_bio_bfqg()

Pull io_uring fixes from Jens Axboe:
 "Nothing major, just a few minor tweaks:

   - Tweak for the TCP zero-copy io_uring self test (Pavel)

   - Rather than use our internal cached value of number of CQ events
     available, use what the user can see (Dylan)

   - Fix a typo in a comment, added in this release (me)

   - Don't allow wrapping while adding provided buffers (me)

   - Fix a double poll race, and add a lockdep assertion for it too
     (Pavel)"

* tag 'io_uring-6.1-2022-11-11' of git://git.kernel.dk/linux:
  io_uring/poll: lockdep annote io_poll_req_insert_locked
  io_uring/poll: fix double poll req->flags races
  io_uring: check for rollover of buffer ID when providing buffers
  io_uring: calculate CQEs from the user visible value
  io_uring: fix typo in io_uring.h comment
  selftests/net: don't tests batched TCP io_uring zc

Pull s390 fixes from Alexander Gordeev:

 - fix memcpy warning about field-spanning write in zcrypt driver

 - minor updates to defconfigs

 - remove CONFIG_DEBUG_INFO_BTF from all defconfigs and add btf.config
   addon config file. It significantly decreases compile time and allows
   quickly enabling that option into the current kernel config

 - add kasan.config addon config file which allows to easily enable
   KASAN into the current kernel config

 - binutils commit 906f69cf65da ("IBM zSystems: Issue error for *DBL
   relocs on misaligned symbols") caused several link errors. Always
   build relocatable kernel to avoid this problem

 - raise the minimum clang version to 15.0.0 to avoid silent generation
   of a corrupted code

* tag 's390-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  scripts/min-tool-version.sh: raise minimum clang version to 15.0.0 for s390
  s390: always build relocatable kernel
  s390/configs: add kasan.config addon config file
  s390/configs: move CONFIG_DEBUG_INFO_BTF into btf.config addon config
  s390: update defconfigs
  s390/zcrypt: fix warning about field-spanning write

Pull kernel hardening fix from Kees Cook:

 - Fix !SMP placement of '.data..decrypted' section (Nathan Chancellor)

* tag 'hardening-v6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  vmlinux.lds.h: Fix placement of '.data..decrypted' section

Pull nfsd fixes from Chuck Lever:

 - Fix an export leak

 - Fix a potential tracepoint crash

* tag 'nfsd-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: put the export reference in nfsd4_verify_deleg_dentry
  nfsd: fix use-after-free in nfsd_file_do_acquire tracepoint

Pull UDF fix from Jan Kara:
 "Fix a possible memory corruption with UDF"

* tag 'fixes_for_v6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix a slab-out-of-bounds write bug in udf_find_entry()

Merge tag 'perf-tools-fixes-for-v6.1-2-2022-11-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix 'perf stat' crash with --per-node --metric-only in CSV mode, due
   to the AGGR_NODE slot in the 'aggr_header_csv' array not being set.

 - Fix printing prefix in CSV output of 'perf stat' metrics in interval
   mode (-I), where an extra separator was being added to the start of
   some lines.

 - Fix skipping branch stack sampling 'perf test' entry, that was using
   both --branch-any and --branch-filter, which can't be used together.

* tag 'perf-tools-fixes-for-v6.1-2-2022-11-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Add the include/perf/ directory to .gitignore
  perf test: Fix skipping branch stack sampling test
  perf stat: Fix printing os->prefix in CSV metrics output
  perf stat: Fix crash with --per-node --metric-only in CSV mode

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to add the missing PWM LEDs into the SiFive HiFive Unleashed
   device tree.

 - A fix to fully clear a task's registers on creation, as they end up
   in userspace and thus leak kernel memory.

 - A pair of VDSO-related build fixes that manifest on recent LLVM-based
   toolchains.

 - A fix to our early init to ensure the DT is adequately processed
   before reserved memory nodes are processed.

* tag 'riscv-for-linus-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: vdso: Do not add missing symbols to version section in linker script
  riscv: fix reserved memory setup
  riscv: vdso: fix build with llvm
  riscv: process: fix kernel info leakage
  riscv: dts: sifive unleashed: Add PWM controlled LEDs

Pull kvm
 "This is a pretty large diffstat for this time of the release. The main
  culprit is a reorganization of the AMD assembly trampoline, allowing
  percpu variables to be accessed early.

  This is needed for the return stack depth tracking retbleed mitigation
  that will be in 6.2, but it also makes it possible to tighten the IBRS
  restore on vmexit. The latter change is a long tail of the
  spectrev2/retbleed patches (the corresponding Intel change was simpler
  and went in already last June), which is why I am including it right
  now instead of sharing a topic branch with tip.

  Being assembly and being rich in comments makes the line count balloon
  a bit, but I am pretty confident in the change (famous last words)
  because the reorganization actually makes everything simpler and more
  understandable than before. It has also had external review and has
  been tested on the aforementioned 6.2 changes, which explode quite
  brutally without the fix.

  Apart from this, things are pretty normal.

  s390:

   - PCI fix

   - PV clock fix

  x86:

   - Fix clash between PMU MSRs and other MSRs

   - Prepare SVM assembly trampoline for 6.2 retbleed mitigation and
     for...

   - ... tightening IBRS restore on vmexit, moving it before the first
     RET or indirect branch

   - Fix log level for VMSA dump

   - Block all page faults during kvm_zap_gfn_range()

  Tools:

   - kvm_stat: fix incorrect detection of debugfs

   - kvm_stat: update vmexit definitions"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86/mmu: Block all page faults during kvm_zap_gfn_range()
  KVM: x86/pmu: Limit the maximum number of supported AMD GP counters
  KVM: x86/pmu: Limit the maximum number of supported Intel GP counters
  KVM: x86/pmu: Do not speculatively query Intel GP PMCs that don't exist yet
  KVM: SVM: Only dump VMSA to klog at KERN_DEBUG level
  tools/kvm_stat: update exit reasons for vmx/svm/aarch64/userspace
  tools/kvm_stat: fix incorrect detection of debugfs
  x86, KVM: remove unnecessary argument to x86_virt_spec_ctrl and callers
  KVM: SVM: move MSR_IA32_SPEC_CTRL save/restore to assembly
  KVM: SVM: restore host save area from assembly
  KVM: SVM: move guest vmsave/vmload back to assembly
  KVM: SVM: do not allocate struct svm_cpu_data dynamically
  KVM: SVM: remove dead field from struct svm_cpu_data
  KVM: SVM: remove unused field from struct vcpu_svm
  KVM: SVM: retrieve VMCB from assembly
  KVM: SVM: adjust register allocation for __svm_vcpu_run()
  KVM: SVM: replace regs argument of __svm_vcpu_run() with vcpu_svm
  KVM: x86: use a separate asm-offsets.c file
  KVM: s390: pci: Fix allocation size of aift kzdev elements
  KVM: s390: pv: don't allow userspace to set the clock under PV

Merge tag 'hyperv-fixes-signed-20221110' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - Fix TSC MSR write for root partition (Anirudh Rayabharam)

 - Fix definition of vector in pci-hyperv driver (Dexuan Cui)

 - A few other misc patches

* tag 'hyperv-fixes-signed-20221110' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  PCI: hv: Fix the definition of vector in hv_compose_msi_msg()
  MAINTAINERS: remove sthemmin
  x86/hyperv: fix invalid writes to MSRs during root partition kexec
  clocksource/drivers/hyperv: add data structure for reference TSC MSR
  Drivers: hv: fix repeated words in comments
  x86/hyperv: Remove BUG_ON() for kmap_local_page()

Pull dmaengine fixes from Vinod Koul:
 "Misc minor driver fixes and a big pile of at_hdmac driver fixes. More
  work on this driver is done and sitting in next:

   - Pile of at_hdmac driver rework which fixes many long standing
     issues for this driver.

   - couple of stm32 driver fixes for clearing structure and race fix

   - idxd fixes for RO device state and batch size

   - ti driver mem leak fix

   - apple fix for grabbing channels in xlate

   - resource leak fix in mv xor"

* tag 'dmaengine-fix-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (24 commits)
  dmaengine: at_hdmac: Check return code of dma_async_device_register
  dmaengine: at_hdmac: Fix impossible condition
  dmaengine: at_hdmac: Don't allow CPU to reorder channel enable
  dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors
  dmaengine: at_hdmac: Fix descriptor handling when issuing it to hardware
  dmaengine: at_hdmac: Fix concurrency over the active list
  dmaengine: at_hdmac: Free the memset buf without holding the chan lock
  dmaengine: at_hdmac: Fix concurrency over descriptor
  dmaengine: at_hdmac: Fix concurrency problems by removing atc_complete_all()
  dmaengine: at_hdmac: Protect atchan->status with the channel lock
  dmaengine: at_hdmac: Do not call the complete callback on device_terminate_all
  dmaengine: at_hdmac: Fix premature completion of desc in issue_pending
  dmaengine: at_hdmac: Start transfer for cyclic channels in issue_pending
  dmaengine: at_hdmac: Don't start transactions at tx_submit level
  dmaengine: at_hdmac: Fix at_lli struct definition
  dmaengine: stm32-dma: fix potential race between pause and resume
  dmaengine: ti: k3-udma-glue: fix memory leak when register device fail
  dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove()
  dmaengine: apple-admac: Fix grabbing of channels in of_xlate
  dmaengine: idxd: fix RO device state error after been disabled/reset
  ...

Pull spi fixes from Mark Brown:
 "A relatively large batch of fixes here but all device specific, plus
  an update to MAINTAINERS.

  The summary print change to the STM32 driver is fixing an issue where
  the driver could easily end up spamming the logs with something that
  should be a debug message"

* tag 'spi-fix-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: amd: Fix SPI_SPD7 value
  spi: stm32: fix stm32_spi_prepare_mbr() that halves spi clk for every run
  spi: meson-spicc: fix do_div build error on non-arm64
  spi: intel: Use correct mask for flash and protected regions
  spi: mediatek: Fix package division error
  spi: tegra210-quad: Don't initialise DMA if not supported
  MAINTAINERS: Update HiSilicon SFC Driver maintainer
  spi: meson-spicc: move wait completion in driver to take bursts delay in account
  spi: stm32: Print summary 'callbacks suppressed' message

Pull MMC fixes from Ulf Hansson:

 - Provide helper for resetting both SDHCI and CQHCI

 - Fix reset for CQHCI (am654, brcmstb, esdhc-imx, of-arasan, tegra)

 - Fixup support for MMC_CAP_8_BIT_DATA (esdhc-imx)

* tag 'mmc-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-esdhc-imx: use the correct host caps for MMC_CAP_8_BIT_DATA
  mmc: sdhci_am654: Fix SDHCI_RESET_ALL for CQHCI
  mmc: sdhci-tegra: Fix SDHCI_RESET_ALL for CQHCI
  mms: sdhci-esdhc-imx: Fix SDHCI_RESET_ALL for CQHCI
  mmc: sdhci-brcmstb: Fix SDHCI_RESET_ALL for CQHCI
  mmc: sdhci-of-arasan: Fix SDHCI_RESET_ALL for CQHCI
  mmc: cqhci: Provide helper for resetting both SDHCI and CQHCI

Pull HID fixes from Jiri Kosina:

 - fix for memory leak (on error path) in Hyper-V driver (Yang
   Yingliang)

 - regression fix for handling 3rd barrel switch emulation in Wacom
   driver (Jason Gerecke)

* tag 'for-linus-2022111101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: wacom: Fix logic used for 3rd barrel switch emulation
  HID: hyperv: fix possible memory leak in mousevsc_probe()
  HID: asus: Remove unused variable in asus_report_tool_width()

Add a lockdep annotation in io_poll_req_insert_locked().
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8115d8e702733754d0aea119e9b5bb63d1eb8b24.1668184658.git.asml.silence@gmail.comSigned-off-by: NJens Axboe <axboe@kernel.dk>

io_poll_double_prepare()            | io_poll_wake()
                                    | poll->head = NULL
smp_load(&poll->head); /* NULL */   |
flags = req->flags;                 |
                                    | req->flags &= ~SINGLE_POLL;
req->flags = flags | DOUBLE_POLL    |

The idea behind io_poll_double_prepare() is to serialise with the
first poll entry by taking the wq lock. However, it's not safe to assume
that io_poll_wake() is not running when we can't grab the lock and so we
may race modifying req->flags.

Skip double poll setup if that happens. It's ok because the first poll
entry will only be removed when it's definitely completing, e.g.
pollfree or oneshot with a valid mask.

Fixes: 49f1c68e ("io_uring: optimise submission side poll_refs")
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b7fab2d502f6121a7d7b199fe4d914a43ca9cdfd.1668184658.git.asml.silence@gmail.comSigned-off-by: NJens Axboe <axboe@kernel.dk>

Pull sound fixes from Takashi Iwai:
 "Things look calming down, as this contains only a few small fixes:

   - Fix for a corner-case bug with SG-buffer page allocation helper

   - A regression fix for Roland USB-audio device probe

   - A potential memory leak fix at the error path

   - Handful quirks and device-specific fixes for HD- and USB-audio"

* tag 'sound-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda: fix potential memleak in 'add_widget_node'
  ALSA: memalloc: Don't fall back for SG-buffer with IOMMU
  ALSA: usb-audio: add quirk to fix Hamedal C20 disconnect issue
  ALSA: hda/realtek: Add Positivo C6300 model quirk
  ALSA: usb-audio: Add DSD support for Accuphase DAC-60
  ALSA: usb-audio: Add quirk entry for M-Audio Micro
  ALSA: hda/hdmi - enable runtime pm for more AMD display audio
  ALSA: usb-audio: Remove redundant workaround for Roland quirk
  ALSA: usb-audio: Yet more regression for for the delayed card registration
  ALSA: hda/ca0132: add quirk for EVGA Z390 DARK
  ALSA: hda: clarify comments on SCF changes
  ALSA: arm: pxa: pxa2xx-ac97-lib: fix return value check of platform_get_irq()
  ALSA: hda/realtek: Add quirk for ASUS Zenbook using CS35L41

Pull drm fixes from Dave Airlie:
 "Weekly pull request for graphics, mostly amdgpu and i915, with a
  couple of fixes for vc4 and panfrost, panel quirks and a kconfig
  change for rcar-du. Nothing seems to be too strange at this stage.

  amdgpu:
   - Fix s/r in amdgpu_vram_mgr_new
   - SMU 13.0.4 update
   - GPUVM TLB race fix
   - DCN 3.1.4 fixes
   - DCN 3.2.x fixes
   - Vega10 fan fix
   - BACO fix for Beige Goby board
   - PSR fix
   - GPU VM PT locking fixes

  amdkfd:
   - CRIU fixes

  vc4:
   - HDMI fixes to vc4.

  panfrost:
   - Make panfrost's uapi header compile with C++.
   - Handle 1 gb boundary correctly in panfrost mmu code.

  panel:
   - Add rotation quirks for 2 panels.

  rcar-du:
   - DSI Kconfig fix

  i915:
   - Fix sg_table handling in map_dma_buf
   - Send PSR update also on invalidate
   - Do not set cache_dirty for DGFX
   - Restore userptr probe_range behaviour"

* tag 'drm-fixes-2022-11-11' of git://anongit.freedesktop.org/drm/drm: (29 commits)
  drm/amd/display: only fill dirty rectangles when PSR is enabled
  drm/amdgpu: disable BACO on special BEIGE_GOBY card
  drm/amdgpu: Drop eviction lock when allocating PT BO
  drm/amdgpu: Unlock bo_list_mutex after error handling
  Revert "drm/amdgpu: Revert "drm/amdgpu: getting fan speed pwm for vega10 properly""
  drm/amd/display: Enforce minimum prefetch time for low memclk on DCN32
  drm/amd/display: Fix gpio port mapping issue
  drm/amd/display: Fix reg timeout in enc314_enable_fifo
  drm/amd/display: Fix FCLK deviation and tool compile issues
  drm/amd/display: Zeromem mypipe heap struct before using it
  drm/amd/display: Update SR watermarks for DCN314
  drm/amdgpu: workaround for TLB seq race
  drm/amdkfd: Fix error handling in criu_checkpoint
  drm/amdkfd: Fix error handling in kfd_criu_restore_events
  drm/amd/pm: update SMU IP v13.0.4 msg interface header
  drm: rcar-du: Fix Kconfig dependency between RCAR_DU and RCAR_MIPI_DSI
  drm/panfrost: Split io-pgtable requests properly
  drm/amdgpu: Fix the lpfn checking condition in drm buddy
  drm: panel-orientation-quirks: Add quirk for Acer Switch V 10 (SW5-017)
  drm: panel-orientation-quirks: Add quirk for Nanote UMPC-01
  ...

get_port_from_cmdline() returns an int, yet is assigned to a char, which
is wrong in its own right, but also, with char becoming unsigned, this
poses problems, because -1 is used as an error value. Further
complicating things, fw_init_early_console() is only ever called with a
-1 argument. Fix this up by removing the unused argument from
fw_init_early_console() and treating port as a proper signed integer.

Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: NJason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Cast upper bound of branch range to long to do signed compare,
avoid negative offset trigger this warning.

Fixes: 9b6584e3 ("MIPS: jump_label: Use compact branches for >= r6")
Signed-off-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Cc: stable@vger.kernel.org
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

The local GPIO driver in the MIPS Alchemy is including the legacy
<linux/gpio.h> header but what it wants is to implement a GPIO
driver so include <linux/gpio/driver.h> instead.

Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: linux-gpio@vger.kernel.org
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add WARN_ON on kexec related kmalloc failed, avoid to pass NULL pointer
to following memcpy and loongson_kexec_prepare.

Fixes: 6ce48897 ("MIPS: Loongson64: Add kexec/kdump support")
Signed-off-by: NLiao Chang <liaochang1@huawei.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Building with clang-14 fails with:

AS      arch/mips/kernel/relocate_kernel.o
<unknown>:0: error: symbol 'kexec_args' is already defined
<unknown>:0: error: symbol 'secondary_kexec_args' is already defined
<unknown>:0: error: symbol 'kexec_start_address' is already defined
<unknown>:0: error: symbol 'kexec_indirection_page' is already defined
<unknown>:0: error: symbol 'relocate_new_kernel_size' is already defined

It turns out EXPORT defined in asm/asm.h expands to a symbol definition,
so there is no need to define these symbols again. Remove duplicated
symbol definitions.

Fixes: 7aa1c8f4 ("MIPS: kdump: Add support")
Signed-off-by: NRongwei Zhang <pudh4418@gmail.com>
Reviewed-by: NNathan Chancellor <nathan@kernel.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

In the mips CONFIG_SYS_SUPPORTS_ZBOOT kernel, fix the compile error
when using CONFIG_FORTIFY_SOURCE=y

LD      vmlinuz
mipsel-openwrt-linux-musl-ld: arch/mips/boot/compressed/decompress.o: in
function `decompress_kernel':
./include/linux/decompress/mm.h:(.text.decompress_kernel+0x177c):
undefined reference to `warn_slowpath_fmt'

kernel test robot helped identify this as related to fortify. The error
appeared with commit 54d9469b ("fortify: Add run-time WARN for
cross-field memcpy()")
Link: https://lore.kernel.org/r/202209161144.x9xSqNQZ-lkp@intel.com/

Resolve this in the same style as commit cfecea6e ("lib/string:
Move helper functions out of string.c")
Reported-by: Nkernel test robot <lkp@intel.com>
Fixes: 54d9469b ("fortify: Add run-time WARN for cross-field memcpy()")
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NJohn Thomson <git@johnthomson.fastmail.com.au>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

When zapping a GFN range, pass 0 => ALL_ONES for the to-be-invalidated
range to effectively block all page faults while the zap is in-progress.
The invalidation helpers take a host virtual address, whereas zapping a
GFN obviously provides a guest physical address and with the wrong unit
of measurement (frame vs. byte).

Alternatively, KVM could walk all memslots to get the associated HVAs,
but thanks to SMM, that would require multiple lookups.  And practically
speaking, kvm_zap_gfn_range() usage is quite rare and not a hot path,
e.g. MTRR and CR0.CD are almost guaranteed to be done only on vCPU0
during boot, and APICv inhibits are similarly infrequent operations.

Fixes: edb298c6 ("KVM: x86/mmu: bump mmu notifier count in kvm_zap_gfn_range")
Reported-by: NChao Peng <chao.p.peng@linux.intel.com>
Cc: stable@vger.kernel.org
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: NSean Christopherson <seanjc@google.com>
Message-Id: <20221111001841.2412598-1-seanjc@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

In ata_tdev_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 13 PID: 13603 Comm: rmmod Kdump: loaded Tainted: G        W          6.1.0-rc3+ #36
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x3a0
lr : device_del+0x44/0x3a0
Call trace:
 device_del+0x48/0x3a0
 attribute_container_class_device_del+0x28/0x40
 transport_remove_classdev+0x60/0x7c
 attribute_container_device_trigger+0x118/0x120
 transport_remove_device+0x20/0x30
 ata_tdev_delete+0x24/0x50 [libata]
 ata_tlink_delete+0x40/0xa0 [libata]
 ata_tport_delete+0x2c/0x60 [libata]
 ata_port_detach+0x148/0x1b0 [libata]
 ata_pci_remove_one+0x50/0x80 [libata]
 ahci_remove_one+0x4c/0x8c [ahci]

Fix this by checking and handling return value of transport_add_device()
in ata_tdev_add(). In the error path, device_del() is called to delete
the device which was added earlier in this function, and ata_tdev_free()
is called to free ata_dev.

Fixes: d9027470 ("[libata] Add ATA transport class")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>

In ata_tlink_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 33 PID: 13850 Comm: rmmod Kdump: loaded Tainted: G        W          6.1.0-rc3+ #12
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x39c
lr : device_del+0x44/0x39c
Call trace:
 device_del+0x48/0x39c
 attribute_container_class_device_del+0x28/0x40
 transport_remove_classdev+0x60/0x7c
 attribute_container_device_trigger+0x118/0x120
 transport_remove_device+0x20/0x30
 ata_tlink_delete+0x88/0xb0 [libata]
 ata_tport_delete+0x2c/0x60 [libata]
 ata_port_detach+0x148/0x1b0 [libata]
 ata_pci_remove_one+0x50/0x80 [libata]
 ahci_remove_one+0x4c/0x8c [ahci]

Fix this by checking and handling return value of transport_add_device()
in ata_tlink_add().

Fixes: d9027470 ("[libata] Add ATA transport class")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>

In ata_tport_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 12 PID: 13605 Comm: rmmod Kdump: loaded Tainted: G        W          6.1.0-rc3+ #8
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x39c
lr : device_del+0x44/0x39c
Call trace:
 device_del+0x48/0x39c
 attribute_container_class_device_del+0x28/0x40
 transport_remove_classdev+0x60/0x7c
 attribute_container_device_trigger+0x118/0x120
 transport_remove_device+0x20/0x30
 ata_tport_delete+0x34/0x60 [libata]
 ata_port_detach+0x148/0x1b0 [libata]
 ata_pci_remove_one+0x50/0x80 [libata]
 ahci_remove_one+0x4c/0x8c [ahci]

Fix this by checking and handling return value of transport_add_device()
in ata_tport_add().

Fixes: d9027470 ("[libata] Add ATA transport class")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>

In the error path in ata_tport_add(), when calling put_device(),
ata_tport_release() is called, it will put the refcount of 'ap->host'.

And then ata_host_put() is called again, the refcount is decreased
to 0, ata_host_release() is called, all ports are freed and set to
null.

When unbinding the device after failure, ata_host_stop() is called
to release the resources, it leads a null-ptr-deref(), because all
the ports all freed and null.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
CPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G            E      6.1.0-rc3+ #8
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ata_host_stop+0x3c/0x84 [libata]
lr : release_nodes+0x64/0xd0
Call trace:
 ata_host_stop+0x3c/0x84 [libata]
 release_nodes+0x64/0xd0
 devres_release_all+0xbc/0x1b0
 device_unbind_cleanup+0x20/0x70
 really_probe+0x158/0x320
 __driver_probe_device+0x84/0x120
 driver_probe_device+0x44/0x120
 __driver_attach+0xb4/0x220
 bus_for_each_dev+0x78/0xdc
 driver_attach+0x2c/0x40
 bus_add_driver+0x184/0x240
 driver_register+0x80/0x13c
 __pci_register_driver+0x4c/0x60
 ahci_pci_driver_init+0x30/0x1000 [ahci]

Fix this by removing redundant ata_host_put() in the error path.

Fixes: 2623c7a5 ("libata: add refcounting to ata_host")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>