Commit b73287f0b0 ("ASoC: soc-pcm: dpcm: fix playback/capture checks")
changed the meaning of dpcm_playback/dpcm_capture and now requires the
CPU DAI BE to aligned with those flags.
This broke all Amlogic cards with uni-directional backends (All gx and
most axg cards).
While I'm still confused as to how this change is an improvement, those
cards can't remain broken forever. Hopefully, next time an API change is
done like that, all the users will be updated as part of the change, and
not left to fend for themselves.
Fixes: b73287f0b0 ("ASoC: soc-pcm: dpcm: fix playback/capture checks")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200731120603.2243261-1-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Previous updates to set dailink capabilities and check dailink
capabilities were based on a flawed assumption that all dais support
the same capabilities as the dailink. This is true for TDM
configurations but existing configurations use an amplifier and a
capture device on the same dailink, and the tests would prevent the
card from probing.
This patch modifies the snd_soc_dai_link_set_capabilities()
helper so that the dpcm_playback (resp. dpcm_capture) dailink
capabilities are set if at least one dai supports playback (resp. capture).
Likewise the checks are modified so that an error is reported only
when dpcm_playback (resp. dpcm_capture) is set but none of the CPU
DAIs support playback (resp. capture).
Fixes: 25612477d2 ('ASoC: soc-dai: set dai_link dpcm_ flags with a helper')
Fixes: b73287f0b0 ('ASoC: soc-pcm: dpcm: fix playback/capture checks')
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200723180533.220312-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Pablo Neira found that after recent update of xt_IDLETIMER the
iptables-nft tests sometimes show an error.
He tracked this down to the delayed cleanup used by nf_tables core:
del rule (transaction A)
add rule (transaction B)
Its possible that by time transaction B (both in same netns) runs,
the xt target destructor has not been invoked yet.
For native nft expressions this is no problem because all expressions
that have such side effects make sure these are handled from the commit
phase, rather than async cleanup.
For nft_compat however this isn't true.
Instead of forcing synchronous behaviour for nft_compat, keep track
of the number of outstanding destructor calls.
When we attempt to create a new expression, flush the cleanup worker
to make sure destructors have completed.
With lots of help from Pablo Neira.
Reported-by: Pablo Neira Ayso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Mapping as little as 64GB can take more than 10 seconds, triggering issues
on kernels with CONFIG_PREEMPT_NONE=y.
ib_umem_get() already splits the work in 2MB units on x86_64, adding a
cond_resched() in the long-lasting loop is enough to solve the issue.
Note that sg_alloc_table() can still use more than 100 ms, which is also
problematic. This might be addressed later in ib_umem_add_sg_table(),
adding new blocks in sgl on demand.
Link: https://lore.kernel.org/r/20200730015755.1827498-1-edumazet@google.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The kbuild bot recently added the W=1 option, which triggered
documentation cleanups to squelch hundreds of kernel-doc warnings.
To make sure new kernel contributions don't add regressions to
kernel-doc descriptors, this patch suggests an option to treat
warnings as errors in CI/automated tests.
A -Werror command-line option is added to the kernel-doc script. When
this option is set, the script will return the number of warnings
found. The caller can then treat this positive return value as an
error and stop the build.
Using this command line option is however not straightforward when the
kernel-doc script is called from other scripts. To align with typical
kernel compilation or documentation generation, the Werror option is
also set by checking the KCFLAGS environment variable, or if
KDOC_WERROR is defined, as in the following examples:
KCFLAGS="-Wall -Werror" make W=1 sound/
KCFLAGS="-Wall -Werror" make W=1 drivers/soundwire/
KDOC_WERROR=1 make htmldocs
Note that in the last example the documentation build does not stop,
only an additional log is provided.
Credits to Randy Dunlap for suggesting the use of environment variables.
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200728162040.92467-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* for-next/read-barrier-depends:
: Allow architectures to override __READ_ONCE()
arm64: Reduce the number of header files pulled into vmlinux.lds.S
compiler.h: Move compiletime_assert() macros into compiler_types.h
checkpatch: Remove checks relating to [smp_]read_barrier_depends()
include/linux: Remove smp_read_barrier_depends() from comments
tools/memory-model: Remove smp_read_barrier_depends() from informal doc
Documentation/barriers/kokr: Remove references to [smp_]read_barrier_depends()
Documentation/barriers: Remove references to [smp_]read_barrier_depends()
locking/barriers: Remove definitions for [smp_]read_barrier_depends()
alpha: Replace smp_read_barrier_depends() usage with smp_[r]mb()
vhost: Remove redundant use of read_barrier_depends() barrier
asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
asm/rwonce: Remove smp_read_barrier_depends() invocation
alpha: Override READ_ONCE() with barriered implementation
asm/rwonce: Allow __READ_ONCE to be overridden by the architecture
compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h
tools: bpf: Use local copy of headers including uapi/linux/filter.h
* for-next/tlbi:
: Support for TTL (translation table level) hint in the TLB operations
arm64: tlb: Use the TLBI RANGE feature in arm64
arm64: enable tlbi range instructions
arm64: tlb: Detect the ARMv8.4 TLBI RANGE feature
arm64: tlb: don't set the ttl value in flush_tlb_page_nosync
arm64: Shift the __tlbi_level() indentation left
arm64: tlb: Set the TTL field in flush_*_tlb_range
arm64: tlb: Set the TTL field in flush_tlb_range
tlb: mmu_gather: add tlb_flush_*_range APIs
arm64: Add tlbi_user_level TLB invalidation helper
arm64: Add level-hinted TLB invalidation helper
arm64: Document SW reserved PTE/PMD bits in Stage-2 descriptors
arm64: Detect the ARMv8.4 TTL feature
* for-next/misc:
: Miscellaneous fixes and cleanups
arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
arm64/mm: save memory access in check_and_switch_context() fast switch path
recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64.
arm64: Reserve HWCAP2_MTE as (1 << 18)
arm64/entry: deduplicate SW PAN entry/exit routines
arm64: s/AMEVTYPE/AMEVTYPER
arm64/hugetlb: Reserve CMA areas for gigantic pages on 16K and 64K configs
arm64: stacktrace: Move export for save_stack_trace_tsk()
smccc: Make constants available to assembly
arm64/mm: Redefine CONT_{PTE, PMD}_SHIFT
arm64/defconfig: Enable CONFIG_KEXEC_FILE
arm64: Document sysctls for emulated deprecated instructions
arm64/panic: Unify all three existing notifier blocks
arm64/module: Optimize module load time by optimizing PLT counting
* for-next/vmcoreinfo:
: Export the virtual and physical address sizes in vmcoreinfo
arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo
crash_core, vmcoreinfo: Append 'MAX_PHYSMEM_BITS' to vmcoreinfo
* for-next/cpufeature:
: CPU feature handling cleanups
arm64/cpufeature: Validate feature bits spacing in arm64_ftr_regs[]
arm64/cpufeature: Replace all open bits shift encodings with macros
arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR2 register
arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR1 register
arm64/cpufeature: Add remaining feature bits in ID_AA64MMFR0 register
* for-next/acpi:
: ACPI updates for arm64
arm64/acpi: disallow writeable AML opregion mapping for EFI code regions
arm64/acpi: disallow AML memory opregions to access kernel memory
* for-next/perf:
: perf updates for arm64
arm64: perf: Expose some new events via sysfs
tools headers UAPI: Update tools's copy of linux/perf_event.h
arm64: perf: Add cap_user_time_short
perf: Add perf_event_mmap_page::cap_user_time_short ABI
arm64: perf: Only advertise cap_user_time for arch_timer
arm64: perf: Implement correct cap_user_time
time/sched_clock: Use raw_read_seqcount_latch()
sched_clock: Expose struct clock_read_data
arm64: perf: Correct the event index in sysfs
perf/smmuv3: To simplify code for ioremap page in pmcg
* for-next/timens:
: Time namespace support for arm64
arm64: enable time namespace support
arm64/vdso: Restrict splitting VVAR VMA
arm64/vdso: Handle faults on timens page
arm64/vdso: Add time namespace page
arm64/vdso: Zap vvar pages when switching to a time namespace
arm64/vdso: use the fault callback to map vvar pages
* for-next/msi-iommu:
: Make the MSI/IOMMU input/output ID translation PCI agnostic, augment the
: MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID bus-specific parameter
: and apply the resulting changes to the device ID space provided by the
: Freescale FSL bus
bus: fsl-mc: Add ACPI support for fsl-mc
bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
of/irq: Make of_msi_map_rid() PCI bus agnostic
of/irq: make of_msi_map_get_device_domain() bus agnostic
dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
of/device: Add input id to of_dma_configure()
of/iommu: Make of_map_rid() PCI agnostic
ACPI/IORT: Add an input ID to acpi_dma_configure()
ACPI/IORT: Remove useless PCI bus walk
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
* for-next/trivial:
: Trivial fixes
arm64: sigcontext.h: delete duplicated word
arm64: ptrace.h: delete duplicated word
arm64: pgtable-hwdef.h: delete duplicated words
IRQ_STACK_SIZE can be made different from THREAD_SIZE,
and as IRQ_STACK_SIZE is used while irq stack allocation,
same define should be used while printing information of irq stack.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/1596196190-14141-1-git-send-email-maninder1.s@samsung.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fix a bug introduced by the changes we made to lockless page table walking this
cycle. When using the hash MMU, and perf with callchain recording, we can
deadlock if the PMI interrupts a hash fault, and the callchain recording then
takes a hash fault on the same page.
Thanks to:
Nicholas Piggin, Aneesh Kumar K.V, Anton Blanchard, Athira Rajeev.
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Merge tag 'powerpc-5.8-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"Fix a bug introduced by the changes we made to lockless page table
walking this cycle.
When using the hash MMU, and perf with callchain recording, we can
deadlock if the PMI interrupts a hash fault, and the callchain
recording then takes a hash fault on the same page.
Thanks to Nicholas Piggin, Aneesh Kumar K.V, Anton Blanchard, and
Athira Rajeev"
* tag 'powerpc-5.8-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s/hash: Fix hash_preload running with interrupts enabled
- Fix build breakage due to circular headers
- Fix build regression when using Clang's integrated assembler
- Fix IPv4 header checksum code to deal with invalid length field
- Fix broken path for Arm PMU entry in MAINTAINERS
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The main one is to fix the build after Willy's per-cpu entropy changes
this week. Although that was already resolved elsewhere, the arm64 fix
here is useful cleanup anyway.
Other than that, we've got a fix for building with Clang's integrated
assembler and a fix to make our IPv4 checksumming robust against
invalid header lengths (this only seems to be triggerable by injected
errors).
- Fix build breakage due to circular headers
- Fix build regression when using Clang's integrated assembler
- Fix IPv4 header checksum code to deal with invalid length field
- Fix broken path for Arm PMU entry in MAINTAINERS"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
MAINTAINERS: Include drivers subdirs for ARM PMU PROFILING AND DEBUGGING entry
arm64: csum: Fix handling of bad packets
arm64: Drop unnecessary include from asm/smp.h
arm64/alternatives: move length validation inside the subsection
Fix a missing __iomem tag in the init_pfn() function. This fixes a sparse
warning of the form:
$ make C=2 drivers/pci/switch/
drivers/pci/switch/switchtec.c:... incorrect type assignment(different address spaces)
Fixes: 080b47def5 ("MicroSemi Switchtec management interface driver")
Link: https://lore.kernel.org/r/20200728192434.18993-2-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Fix a number of missing __iomem and __user tags in the ioctl functions of
the switchtec driver. This fixes a number of sparse warnings of the form:
$ make C=2 drivers/pci/switch/
drivers/pci/switch/switchtec.c:... incorrect type in ... (different address spaces)
Fixes: 52eabba5bc ("switchtec: Add IOCTLs to the Switchtec driver")
Link: https://lore.kernel.org/r/20200728192434.18993-1-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Two more merge window regressions, a corruption bug in hfi1 and a few
other small fixes.
- Missing user input validation regression in ucma
- Disallowing a previously allowed user combination regression in mlx5
- ODP prefetch memory leaking triggerable by userspace
- Memory corruption in hf1 due to faulty ring buffer logic
- Missed mutex initialization crash in mlx5
- Two small defects with RDMA DIM
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Two more merge window regressions, a corruption bug in hfi1 and a few
other small fixes.
- Missing user input validation regression in ucma
- Disallowing a previously allowed user combination regression in
mlx5
- ODP prefetch memory leaking triggerable by userspace
- Memory corruption in hf1 due to faulty ring buffer logic
- Missed mutex initialization crash in mlx5
- Two small defects with RDMA DIM"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/core: Free DIM memory in error unwind
RDMA/core: Stop DIM before destroying CQ
RDMA/mlx5: Initialize QP mutex for the debug kernels
IB/rdmavt: Fix RQ counting issues causing use of an invalid RWQE
RDMA/mlx5: Allow providing extra scatter CQE QP flag
RDMA/mlx5: Fix prefetch memory leak if get_prefetchable_mr fails
RDMA/cm: Add min length checks to user structure copies
There exists an error "404 Not Found" when I click the html link of
"Documentation/networking/filter.rst" in the BPF documentation [1],
fix it.
Additionally, use the new links about "BPF and XDP Reference Guide"
and "bpf(2)" to avoid redirects.
[1] https://www.kernel.org/doc/html/latest/bpf/
Fixes: d9b9170a26 ("docs: bpf: Rename README.rst to index.rst")
Fixes: cb3f0d56e1 ("docs: networking: convert filter.txt to ReST")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/1596184142-18476-1-git-send-email-yangtiezhu@loongson.cn
A few wrap-up small fixes for the usual HD-audio and USB-audio stuff:
- A regression fix for S3 suspend on old Intel platforms
- A fix for possible Oops in ASoC HD-audio binding
- Trivial quirks for various devices
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Merge tag 'sound-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A few wrap-up small fixes for the usual HD-audio and USB-audio stuff:
- A regression fix for S3 suspend on old Intel platforms
- A fix for possible Oops in ASoC HD-audio binding
- Trivial quirks for various devices"
* tag 'sound-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek - Fixed HP right speaker no sound
ALSA: hda: fix NULL pointer dereference during suspend
ALSA: hda/hdmi: Fix keep_power assignment for non-component devices
ALSA: hda: Workaround for spurious wakeups on some Intel platforms
ALSA: hda/realtek: Fix add a "ultra_low_power" function for intel reference board (alc256)
ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus G14(GA401) series with ALC289
ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series with ALC289
ALSA: usb-audio: Add implicit feedback quirk for SSL2
Newer Loongson cores (Loongson-3A R2 and newer) use the
implementation-dependent ExcCode 16 to signal Loongson-specific
exceptions. The extended cause is put in the non-standard CP0.Diag1
register which is CP0 Register 22 Select 1, called GSCause in Loongson
manuals. Inside is an exception code bitfield called GSExcCode, only
codes 0 to 6 inclusive are documented (so far, in the Loongson 3A3000
User Manual, Volume 2).
During experiments, it was found that some undocumented unprivileged
instructions can trigger the also-undocumented GSExcCode 8 on Loongson
3A4000. Processor state is not corrupted, but we cannot continue without
further knowledge, and Loongson is not providing that information as of
this writing. So we send SIGILL on seeing this exception code to thwart
easy local DoS attacks.
Other exception codes are made fatal, partly because of insufficient
knowledge, also partly because they are not as easily reproduced. None
of them are encountered in the wild with upstream kernels and userspace
so far.
Some older cores (Loongson-3A1000 and Loongson-3B1500) have ExcCode 16
too, but the semantic is equivalent to GSExcCode 0. Because the
respective manuals did not mention the CP0.Diag1 register or its read
behavior, these cores are not covered in this patch, as MFC0 from
non-existent CP0 registers is UNDEFINED according to the MIPS
architecture spec.
Reviewed-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This 32-bit CP0 register is named GSCause in Loongson manuals. It carries
Loongson extended exception information. We name it Diag1 because we
fear the "GSCause" name might get changed in the future.
Reviewed-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Previously ExcCode 16 is unconditionally treated as the FTLB parity
exception (FTLBPar), but in fact its semantic is implementation-
dependent. Looking at various manuals it seems the FTLBPar exception is
only present on some recent MIPS Technologies cores, so only register
the handler on these.
Fixes: 75b5b5e0a2 ("MIPS: Add support for FTLBs")
Reviewed-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Cc: Paul Burton <paulburton@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Old Device Tree for the qi,lb60 (aka. Ben Nanonote) did not have a
'memory' node. The kernel would then read the memory controller
registers to know how much RAM was available.
Since every other supported board has had a 'memory' node from the
beginning, we can just hardcode a RAM size of 32 MiB when running with
an old Device Tree without the 'memory' node.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Add a memory node, which was missing until now, and use the retail name
"Ben Nanonote" as the model, as it is way more known under that name
than under the name "LB60".
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The fw_passed_dtb is now properly initialized even when
CONFIG_BUILTIN_DTB is used, so there's no need to handle it in any
particular way here.
Note that the behaviour is slightly different, as the previous code used
the built-in Device Tree unconditionally, while now the built-in Device
Tree is only used when the bootloader did not provide one.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Init the 'fw_passed_dtb' pointer to the buit-in Device Tree blob when it
has been compiled in with CONFIG_BUILTIN_DTB.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
bus->count_cells() parses cells starting from the node's parent. This is
not good enough for parser_init() which is generally parsing a bus node.
Revert to previous behavior using of_bus_n_*_cells().
Fixes: 2f96593ecc ("of_address: Add bus type match for pci ranges parser")
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
After 2f96593ecc ("of_address: Add bus type match for pci ranges parser"),
the last user of of_bus_pci_get_flags when CONFIG_PCI is disabled had gone.
This caused unused function warning when compiling without CONFIG_PCI.
Fix by guarding it with CONFIG_PCI.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 2f96593ecc ("of_address: Add bus type match for pci ranges parser")
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The o32, n32 and n64 calling conventions require the return
value to be stored in $v0 which maps to $2 register, i.e.,
the register 2.
Fixes: c1932cd ("bpf: Add MIPS support to samples/bpf.")
Signed-off-by: Jerry Crunchtime <jerry.c.t@web.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/43707d31-0210-e8f0-9226-1af140907641@web.de
As soon as we install the file descriptor, we have to assume that it
can get arbitrarily closed. We currently account memory (and note that
we did) after installing the ring fd, which means that it could be a
potential use-after-free condition if the fd is closed right after
being installed, but before we fiddle with the ctx.
In fact, syzbot reported this exact scenario:
BUG: KASAN: use-after-free in io_account_mem fs/io_uring.c:7397 [inline]
BUG: KASAN: use-after-free in io_uring_create fs/io_uring.c:8369 [inline]
BUG: KASAN: use-after-free in io_uring_setup+0x2797/0x2910 fs/io_uring.c:8400
Read of size 1 at addr ffff888087a41044 by task syz-executor.5/18145
CPU: 0 PID: 18145 Comm: syz-executor.5 Not tainted 5.8.0-rc7-next-20200729-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x18f/0x20d lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
io_account_mem fs/io_uring.c:7397 [inline]
io_uring_create fs/io_uring.c:8369 [inline]
io_uring_setup+0x2797/0x2910 fs/io_uring.c:8400
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c429
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8f121d0c78 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 0000000000008540 RCX: 000000000045c429
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000196
RBP: 000000000078bf38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007fff86698cff R14: 00007f8f121d19c0 R15: 000000000078bf0c
Move the accounting of the ring used locked memory before we get and
install the ring file descriptor.
Cc: stable@vger.kernel.org
Reported-by: syzbot+9d46305e76057f30c74e@syzkaller.appspotmail.com
Fixes: 309758254e ("io_uring: report pinned memory usage")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Due to the lockless design of the driver, it is theoretically possible
to access a NULL pointer, if a slave interrupt was running while we were
unregistering the slave. To make this rock solid, disable the interrupt
for a short time while we are clearing the interrupt_enable register.
This patch is purely based on code inspection. The OOPS is super-hard to
trigger because clearing SAR (the address) makes interrupts even more
unlikely to happen as well. While here, reinit SCR to SDBS because this
bit should always be set according to documentation. There is no effect,
though, because the interface is disabled.
Fixes: 7b814d852a ("i2c: rcar: avoid race when unregistering slave client")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Use kthread_create_worker to simplify the code and optimise
the manager struct: msm_drm_thread. With this change, we
could remove struct element (struct task_struct *thread &
struct kthread_worker worker), instead, use one point (struct
kthread_worker *worker).
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit adds support for the MDP5 IP on Snapdragon
636/660.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This also applies to sdm630/636 and their SDA
counterparts.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit adds support for the MDP5 IP on Snapdragon
630. The configuration is different from SDM660's, as
the latter one has two DSI outputs.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
These SoCs make use of the 14nm phy, but at different
addresses than other 14nm units.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Initialize hardware clock-gating registers on A640 and A650 GPUs.
At least for A650, this solves some performance issues.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This will allow supporting different hwcg tables for a6xx.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This brings up basic video mode functionality for SM8250 DPU. Command mode
and dual mixer/intf configurations are not working, future patches will
address this. Scaler functionality and multiple planes is also untested.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This brings up basic video mode functionality for SM8150 DPU. Command mode
and dual mixer/intf configurations are not working, future patches will
address this. Scaler functionality and multiple planes is also untested.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
[fixup max_linewidth warning]
Signed-off-by: Rob Clark <robdclark@chromium.org>
Calculate the correct timings for displayport, from downstream driver.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This fixes flushing of INTF_2 and INTF_3 on SM8150 and SM8250 hardware.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
The INTF_INPUT_CTRL feature is not available on sdm845, so don't set it.
This also adds separate feature bits for INTF (based on downstream) instead
of using CTL feature bit for it, and removes the unnecessary NULL check in
the added bind_pingpong_blk function.
Fixes: 73bfb790ac ("msm:disp:dpu1: setup display datapath for SC7180 target")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This isn't something that ever changes between planes, so move it to
dpu_caps struct. Making this change will allow more re-use in the
"SSPP sub blocks config" part of the catalog, in particular when adding
support for SM8150 and SM8250 which have different max_linewidth.
This also sets max_hdeci_exp/max_vdeci_exp to 0 for sc7180, as decimation
is not supported on the newest DPU versions. (note that decimation is not
implemented, so this changes nothing)
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Update the UBWC registers to the right values for sm8150 and sm8250.
This removes broken dpu_hw_reset_ubwc, which doesn't work because the
"force blk offset to zero to access beginning of register region" hack is
copied from downstream, where mapped region starts 0x1000 below what is
used in the upstream driver.
Also simplifies the overly complicated change that was introduced in
e4f9bbe9f8 to work around dpu_hw_reset_ubwc being broken.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
All DPU versions starting from 4.0 use the sdm845 version, so check for
that instead of checking each version individually. This chooses the right
function for sm8150 and sm8250.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This is required for A640 and A650 to be able to share UBWC-compressed
images with other HW such as display, which expect this configuration.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Small cleanup, lets not open-code bits/bitfields that are properly
defined in the rnndb xml (and therefore have builders in the generated
headers)
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
We haven't sync'd for a while.. pull in updates to get definitions for
some fields in pkt7 payloads.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
