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- Make buffer_percent read/write. The buffer_percent file is how users can
state how long to block on the tracing buffer depending on how much
is in the buffer. When it hits the "buffer_percent" it will wake the
task waiting on the buffer. For some reason it was set to read-only.
This was not noticed because testing was done as root without SELinux,
but with SELinux it will prevent even root to write to it without having
CAP_DAC_OVERRIDE.
- The "touched_functions" was added this merge window, but one of the
reasons for adding it was not implemented. That was to show what functions
were not only touched, but had either a direct trampoline attached to
it, or a kprobe or live kernel patching that can "hijack" the function
to run a different function. The point is to know if there's functions
in the kernel that may not be behaving as the kernel code shows. This can
be used for debugging. TODO: Add this information to kernel oops too.
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Merge tag 'trace-v6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull more tracing updates from Steven Rostedt:
- Make buffer_percent read/write.
The buffer_percent file is how users can state how long to block on
the tracing buffer depending on how much is in the buffer. When it
hits the "buffer_percent" it will wake the task waiting on the
buffer. For some reason it was set to read-only.
This was not noticed because testing was done as root without
SELinux, but with SELinux it will prevent even root to write to it
without having CAP_DAC_OVERRIDE.
- The "touched_functions" was added this merge window, but one of the
reasons for adding it was not implemented.
That was to show what functions were not only touched, but had either
a direct trampoline attached to it, or a kprobe or live kernel
patching that can "hijack" the function to run a different function.
The point is to know if there's functions in the kernel that may not
be behaving as the kernel code shows. This can be used for debugging.
TODO: Add this information to kernel oops too.
* tag 'trace-v6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ftrace: Add MODIFIED flag to show if IPMODIFY or direct was attached
tracing: Fix permissions for the buffer_percent file
- Introduce local{,64}_try_cmpxchg() - a slightly more optimal
primitive, which will be used in perf events ring-buffer code.
- Simplify/modify rwsems on PREEMPT_RT, to address writer starvation.
- Misc cleanups/fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Introduce local{,64}_try_cmpxchg() - a slightly more optimal
primitive, which will be used in perf events ring-buffer code
- Simplify/modify rwsems on PREEMPT_RT, to address writer starvation
- Misc cleanups/fixes
* tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/atomic: Correct (cmp)xchg() instrumentation
locking/x86: Define arch_try_cmpxchg_local()
locking/arch: Wire up local_try_cmpxchg()
locking/generic: Wire up local{,64}_try_cmpxchg()
locking/atomic: Add generic try_cmpxchg{,64}_local() support
locking/rwbase: Mitigate indefinite writer starvation
locking/arch: Rename all internal __xchg() names to __arch_xchg()
Merge my x86 uaccess updates branch.
The LAM ("Linear Address Masking") updates in this release made me
unhappy about how "access_ok()" was done, and it actually turned out to
have a couple of small bugs in it too. This is my cleanup of the code:
- use the sign bit of the __user pointer rather than masking the
address and checking it against the TASK_SIZE range.
We already did this part for the get/put_user() side, but
'access_ok()' did the naïve "mask and range check" thing, which not
only generates nasty code, but also ended up meaning that __access_ok
itself didn't do a good job, and so copy_from_user_nmi() didn't get
the check right.
- move all the code that is 64-bit only into the 64-bit version of the
header file, so that we don't unnecessarily pollute the shared x86
code and make it look like LAM might work in 32-bit too.
- fix a bug in the address masking (that doesn't end up mattering: in
this case the fix was to just remove the buggy code entirely).
- a couple of trivial cleanups and added commentary about the
access_ok() rules.
* x86-uaccess-cleanup:
x86-64: mm: clarify the 'positive addresses' user address rules
x86: mm: remove 'sign' games from LAM untagged_addr*() macros
x86: uaccess: move 32-bit and 64-bit parts into proper <asm/uaccess_N.h> header
x86: mm: remove architecture-specific 'access_ok()' define
x86-64: make access_ok() independent of LAM
* Support for hibernation.
* .rela.dyn has been moved to init.
* A fix for the SBI probing to allow for implementation-defined
behavior.
* Various other fixes and cleanups throughout the tree.
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Merge tag 'riscv-for-linus-6.4-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt:
- Support for hibernation
- The .rela.dyn section has been moved to the init area
- A fix for the SBI probing to allow for implementation-defined
behavior
- Various other fixes and cleanups throughout the tree
* tag 'riscv-for-linus-6.4-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: include cpufeature.h in cpufeature.c
riscv: Move .rela.dyn to the init sections
dt-bindings: riscv: explicitly mention assumption of Zicsr & Zifencei support
riscv: compat_syscall_table: Fixup compile warning
RISC-V: fixup in-flight collision with ARCH_WANT_OPTIMIZE_VMEMMAP rename
RISC-V: fix sifive and thead section mismatches in errata
RISC-V: Align SBI probe implementation with spec
riscv: mm: remove redundant parameter of create_fdt_early_page_table
riscv: Adjust dependencies of HAVE_DYNAMIC_FTRACE selection
RISC-V: Add arch functions to support hibernation/suspend-to-disk
RISC-V: mm: Enable huge page support to kernel_page_present() function
RISC-V: Factor out common code of __cpu_resume_enter()
RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function
- ONE_REG interface to enable/disable SBI extensions
- Zbb extension for Guest/VM
- AIA CSR virtualization
x86:
- Fix a long-standing TDP MMU flaw, where unloading roots on a vCPU can
result in the root being freed even though the root is completely valid
and can be reused as-is (with a TLB flush).
s390:
- A couple bugfixes.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more kvm updates from Paolo Bonzini:
"This includes the 6.4 changes for RISC-V, and a few bugfix patches for
other architectures. For x86, this closes a longstanding performance
issue in the newer and (usually) more scalable page table management
code.
RISC-V:
- ONE_REG interface to enable/disable SBI extensions
- Zbb extension for Guest/VM
- AIA CSR virtualization
x86:
- Fix a long-standing TDP MMU flaw, where unloading roots on a vCPU
can result in the root being freed even though the root is
completely valid and can be reused as-is (with a TLB flush).
s390:
- A couple of bugfixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: s390: fix race in gmap_make_secure()
KVM: s390: pv: fix asynchronous teardown for small VMs
KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated
RISC-V: KVM: Virtualize per-HART AIA CSRs
RISC-V: KVM: Use bitmap for irqs_pending and irqs_pending_mask
RISC-V: KVM: Add ONE_REG interface for AIA CSRs
RISC-V: KVM: Implement subtype for CSR ONE_REG interface
RISC-V: KVM: Initial skeletal support for AIA
RISC-V: KVM: Drop the _MASK suffix from hgatp.VMID mask defines
RISC-V: Detect AIA CSRs from ISA string
RISC-V: Add AIA related CSR defines
RISC-V: KVM: Allow Zbb extension for Guest/VM
RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions
RISC-V: KVM: Alphabetize selects
KVM: RISC-V: Retry fault if vma_lookup() results become invalid
Remove an ACPI backlight quirk for Lenovo ThinkPad W530, added during
the 6.3 cycle, that turned out to do more harm than help (Hans de Goede).
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Merge tag 'acpi-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Remove an ACPI backlight quirk for Lenovo ThinkPad W530, added during
the 6.3 cycle, that turned out to do more harm than help (Hans de
Goede)"
* tag 'acpi-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: video: Remove acpi_backlight=video quirk for Lenovo ThinkPad W530
- Fix NULL pointer access in the Intel powerclamp thermal driver that
occurs on attempts to set the cooling device state to 0 in the
default configuration (Srinivas Pandruvada).
- Drop the stale MAINTAINERS entry for the Intel Menlow thermal driver
that has been removed recently (Lukas Bulwahn).
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Merge tag 'thermal-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in the Intel powerclamp driver
introduced during the 6.3 cycle and update MAINTAINERS to match recent
code changes.
Specifics:
- Fix NULL pointer access in the Intel powerclamp thermal driver that
occurs on attempts to set the cooling device state to 0 in the
default configuration (Srinivas Pandruvada)
- Drop the stale MAINTAINERS entry for the Intel Menlow thermal
driver that has been removed recently (Lukas Bulwahn)"
* tag 'thermal-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
MAINTAINERS: remove section INTEL MENLOW THERMAL DRIVER
thermal: intel: powerclamp: Fix NULL pointer access issue
- Fix for mediatek driver warning for variable used uninitialized and fix
for wrong pll math
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Merge tag 'phy-fixes-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy fixes from Vinod Koul:
- Fix for mediatek driver warning for variable used uninitialized and
for wrong pll math
* tag 'phy-fixes-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
phy: mediatek: hdmi: mt8195: fix wrong pll calculus
phy: mediatek: hdmi: mt8195: fix uninitialized variable usage in pll_calc
amdgpu:
- SR-IOV fixes
- DCN 3.2 fixes
- DC mclk handling fixes
- eDP fixes
- SubVP fixes
- HDCP regression fix
- DSC fixes
- DC FP fixes
- DCN 3.x fixes
- Display flickering fix when switching between vram and gtt
- Z8 power saving fix
- Fix hang when skipping modeset
- GPU reset fixes
- Doorbell fix when resizing BARs
- Fix spurious warnings in gmc
- Locking fix for AMDGPU_SCHED IOCTL
- SR-IOV fix
- DCN 3.1.4 fix
- DCN 3.2 fix
- Fix job cleanup when CS is aborted
i915:
- skl pipe source size check
- mtl transcoder mask fix
- DSI power on sequence fix
- GuC versioning corner case fix
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Merge tag 'drm-next-2023-05-05' of git://anongit.freedesktop.org/drm/drm
Pull more drm fixes from Dave Airlie:
"This is the fixes for the last couple of weeks for i915 and last 3
weeks for amdgpu, lots of them but pretty scattered around and all
pretty small.
amdgpu:
- SR-IOV fixes
- DCN 3.2 fixes
- DC mclk handling fixes
- eDP fixes
- SubVP fixes
- HDCP regression fix
- DSC fixes
- DC FP fixes
- DCN 3.x fixes
- Display flickering fix when switching between vram and gtt
- Z8 power saving fix
- Fix hang when skipping modeset
- GPU reset fixes
- Doorbell fix when resizing BARs
- Fix spurious warnings in gmc
- Locking fix for AMDGPU_SCHED IOCTL
- SR-IOV fix
- DCN 3.1.4 fix
- DCN 3.2 fix
- Fix job cleanup when CS is aborted
i915:
- skl pipe source size check
- mtl transcoder mask fix
- DSI power on sequence fix
- GuC versioning corner case fix"
* tag 'drm-next-2023-05-05' of git://anongit.freedesktop.org/drm/drm: (48 commits)
drm/amdgpu: drop redundant sched job cleanup when cs is aborted
drm/amd/display: filter out invalid bits in pipe_fuses
drm/amd/display: Change default Z8 watermark values
drm/amdgpu: disable SDMA WPTR_POLL_ENABLE for SR-IOV
drm/amdgpu: add a missing lock for AMDGPU_SCHED
drm/amdgpu: fix an amdgpu_irq_put() issue in gmc_v9_0_hw_fini()
drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v10_0_hw_fini
drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini
drm/amdgpu: Enable doorbell selfring after resize FB BAR
drm/amdgpu: Use the default reset when loading or reloading the driver
drm/amdgpu: Fix mode2 reset for sienna cichlid
drm/i915/dsi: Use unconditional msleep() instead of intel_dsi_msleep()
drm/i915/mtl: Add the missing CPU transcoder mask in intel_device_info
drm/i915/guc: Actually return an error if GuC version range check fails
drm/amd/display: Lowering min Z8 residency time
drm/amd/display: fix flickering caused by S/G mode
drm/amd/display: Set min_width and min_height capability for DCN30
drm/amd/display: Isolate remaining FPU code in DCN32
drm/amd/display: Update bounding box values for DCN321
drm/amd/display: Do not clear GPINT register when releasing DMUB from reset
...
If a function had ever had IPMODIFY or DIRECT attached to it, where this
is how live kernel patching and BPF overrides work, mark them and display
an "M" in the enabled_functions and touched_functions files. This can be
used for debugging. If a function had been modified and later there's a bug
in the code related to that function, this can be used to know if the cause
is possibly from a live kernel patch or a BPF program that changed the
behavior of the code.
Also update the documentation on the enabled_functions and
touched_functions output, as it was missing direct callers and CALL_OPS.
And include this new modify attribute.
Link: https://lore.kernel.org/linux-trace-kernel/20230502213233.004e3ae4@gandalf.local.home
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Commit 2b6a7409ac39 ("thermal: intel: menlow: Get rid of this driver")
removes the driver drivers/thermal/intel/intel_menlow.c, but misses to
remove its reference in MAINTAINERS.
Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.
Remove the INTEL MENLOW THERMAL DRIVER section in MAINTAINERS.
Fixes: 2b6a7409ac39 ("thermal: intel: menlow: Get rid of this driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
result in the root being freed even though the root is completely valid and
can be reused as-is (with a TLB flush).
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Merge tag 'kvm-x86-mmu-6.4-2' of https://github.com/kvm-x86/linux into HEAD
Fix a long-standing flaw in x86's TDP MMU where unloading roots on a vCPU can
result in the root being freed even though the root is completely valid and
can be reused as-is (with a TLB flush).
from Xiubo intended for stable.
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Merge tag 'ceph-for-6.4-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"A few filesystem improvements, with a rather nasty use-after-free fix
from Xiubo intended for stable"
* tag 'ceph-for-6.4-rc1' of https://github.com/ceph/ceph-client:
ceph: reorder fields in 'struct ceph_snapid_map'
ceph: pass ino# instead of old_dentry if it's disconnected
ceph: fix potential use-after-free bug when trimming caps
ceph: implement writeback livelock avoidance using page tagging
ceph: do not print the whole xattr value if it's too long
This pull request includes a number of patches that didn't quite make
the cut last merge window while we addressed some outstanding issues
and review comments. It includes some new caching modes for those that
only want readahead caches and reworks how we do writeback caching so we
are not keeping extra references around which both causes performance problems
and uses lots of additional resources on the server.
It also includes a new flag to force disabling of xattrs which can also
cause major performance issues, particularly if the underlying filesystem
on the server doesn't support them.
Finally it adds a couple of additional mount options to better support
directio and enabling caches when the server doesn't support qid.version.
There was one late-breaking bug report that has also been included as its
own patch where I forgot to propagate an embarassing bit-logic fix to the
various variations of open. Since that was only added to for-next a week
ago, if you would like to not include it, I can include it in the first
round of fixes for -rc2.
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
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Merge tag '9p-6.4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9p updates from Eric Van Hensbergen:
"This includes a number of patches that didn't quite make the cut last
merge window while we addressed some outstanding issues and review
comments. It includes some new caching modes for those that only want
readahead caches and reworks how we do writeback caching so we are not
keeping extra references around which both causes performance problems
and uses lots of additional resources on the server.
It also includes a new flag to force disabling of xattrs which can
also cause major performance issues, particularly if the underlying
filesystem on the server doesn't support them.
Finally it adds a couple of additional mount options to better support
directio and enabling caches when the server doesn't support
qid.version.
There was one late-breaking bug report that has also been included as
its own patch where I forgot to propagate an embarassing bit-logic fix
to the various variations of open"
* tag '9p-6.4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
fs/9p: Fix bit operation logic error
fs/9p: Rework cache modes and add new options to Documentation
fs/9p: remove writeback fid and fix per-file modes
fs/9p: Add new mount modes
9p: Add additional debug flags and open modes
fs/9p: allow disable of xattr support on mount
fs/9p: Remove unnecessary superblock flags
fs/9p: Consolidate file operations and add readahead and writeback
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Merge tag 'mm-hotfixes-stable-2023-05-03-16-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hitfixes from Andrew Morton:
"Five hotfixes. Three are cc:stable, two for this -rc cycle"
* tag 'mm-hotfixes-stable-2023-05-03-16-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: change per-VMA lock statistics to be disabled by default
MAINTAINERS: update Michal Simek's email
mm/mempolicy: correctly update prev when policy is equal on mbind
relayfs: fix out-of-bounds access in relay_file_read
kasan: hw_tags: avoid invalid virt_to_page()
- Some KSM work from David Hildenbrand, to make the PR_SET_MEMORY_MERGE
ioctl's behavior more similar to KSM's behavior.
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Merge tag 'mm-stable-2023-05-03-16-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- Some DAMON cleanups from Kefeng Wang
- Some KSM work from David Hildenbrand, to make the PR_SET_MEMORY_MERGE
ioctl's behavior more similar to KSM's behavior.
[ Andrew called these "final", but I suspect we'll have a series fixing
up the fact that the last commit in the dmapools series in the
previous pull seems to have unintentionally just reverted all the
other commits in the same series.. - Linus ]
* tag 'mm-stable-2023-05-03-16-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: hwpoison: coredump: support recovery from dump_user_range()
mm/page_alloc: add some comments to explain the possible hole in __pageblock_pfn_to_page()
mm/ksm: move disabling KSM from s390/gmap code to KSM code
selftests/ksm: ksm_functional_tests: add prctl unmerge test
mm/ksm: unmerge and clear VM_MERGEABLE when setting PR_SET_MEMORY_MERGE=0
mm/damon/paddr: fix missing folio_sz update in damon_pa_young()
mm/damon/paddr: minor refactor of damon_pa_mark_accessed_or_deactivate()
mm/damon/paddr: minor refactor of damon_pa_pageout()
- Fix regression in CPU erratum workaround when disabling the MMU
- Fix detection of pointer authentication hwcaps
- Avoid writeable, executable ELF sections in vmlinux
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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:
"A few arm64 fixes that came in during the merge window for -rc1.
The main thing is restoring the pointer authentication hwcaps, which
disappeared during some recent refactoring
- Fix regression in CPU erratum workaround when disabling the MMU
- Fix detection of pointer authentication hwcaps
- Avoid writeable, executable ELF sections in vmlinux"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: lds: move .got section out of .text
arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text
arm64: cpufeature: Fix pointer auth hwcaps
arm64: Fix label placement in record_mmu_state()
1, Better backtraces for humanization;
2, Relay BCE exceptions to userland as SIGSEGV;
3, Provide kernel fpu functions;
4, Optimize memory ops (memset/memcpy/memmove);
5, Optimize checksum and crc32(c) calculation;
6, Add ARCH_HAS_FORTIFY_SOURCE selection;
7, Add function error injection support;
8, Add ftrace with direct call support;
9, Add basic perf tools support.
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Merge tag 'loongarch-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Better backtraces for humanization
- Relay BCE exceptions to userland as SIGSEGV
- Provide kernel fpu functions
- Optimize memory ops (memset/memcpy/memmove)
- Optimize checksum and crc32(c) calculation
- Add ARCH_HAS_FORTIFY_SOURCE selection
- Add function error injection support
- Add ftrace with direct call support
- Add basic perf tools support
* tag 'loongarch-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (24 commits)
tools/perf: Add basic support for LoongArch
LoongArch: ftrace: Add direct call trampoline samples support
LoongArch: ftrace: Add direct call support
LoongArch: ftrace: Implement ftrace_find_callable_addr() to simplify code
LoongArch: ftrace: Fix build error if DYNAMIC_FTRACE_WITH_REGS is not set
LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses
LoongArch: Add support for function error injection
LoongArch: Add ARCH_HAS_FORTIFY_SOURCE selection
LoongArch: crypto: Add crc32 and crc32c hw acceleration
LoongArch: Add checksum optimization for 64-bit system
LoongArch: Optimize memory ops (memset/memcpy/memmove)
LoongArch: Provide kernel fpu functions
LoongArch: Relay BCE exceptions to userland as SIGSEGV with si_code=SEGV_BNDERR
LoongArch: Tweak the BADV and CPUCFG.PRID lines in show_regs()
LoongArch: Humanize the ESTAT line when showing registers
LoongArch: Humanize the ECFG line when showing registers
LoongArch: Humanize the EUEN line when showing registers
LoongArch: Humanize the PRMD line when showing registers
LoongArch: Humanize the CRMD line when showing registers
LoongArch: Fix format of CSR lines during show_regs()
...
If cur_state for the powerclamp cooling device is set to the default
minimum state of 0, without setting first to cur_state > 0, this results
in NULL pointer access.
This NULL pointer access happens in the powercap core idle-inject
function idle_inject_set_duration() as there is no NULL check for
idle_inject_device pointer. This pointer must be allocated by calling
idle_inject_register() or idle_inject_register_full().
In the function powerclamp_set_cur_state(), idle_inject_device pointer
is allocated only when the cur_state > 0. But setting 0 without changing
to any other state, idle_inject_set_duration() will be called with a
NULL idle_inject_device pointer.
To address this, just return from powerclamp_set_cur_state() if the
current cooling device state is the same as the last one. Since the
power-up default cooling device state is 0, changing the state to 0
again here will return without calling idle_inject_set_duration().
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Fixes: 8526eb7fc75a ("thermal: intel: powerclamp: Use powercap idle-inject feature")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=217386
Tested-by: Risto A. Paju <teknohog@iki.fi>
Cc: 6.3+ <stable@kernel.org> # 6.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Remove the acpi_backlight=video quirk for Lenovo ThinkPad W530.
This was intended to help users of the (unsupported) Nvidia binary driver,
but this has been reported to cause backlight control issues for users
who have the gfx configured in hybrid (dual-GPU) mode, so drop this.
The Nvidia binary driver should call acpi_video_register_backlight()
when necessary and this has been reported to Nvidia.
Until this is fixed Nvidia binary driver users can work around this by
passing "acpi_backlight=video" on the kernel commandline (with the latest
6.1.y or newer stable series, kernels < 6.1.y don't need this).
Fixes: a5b2781dcab2 ("ACPI: video: Add acpi_backlight=video quirk for Lenovo ThinkPad W530")
Reported-by: Русев Путин <rockeraliexpress@gmail.com>
Link: https://lore.kernel.org/linux-acpi/CAK4BXn0ngZRmzx1bodAF8nmYj0PWdUXzPGHofRrsyZj8MBpcVA@mail.gmail.com/
Cc: 6.1+ <stable@vger.kernel.org> # 6.1+
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The clock rate calculus in mtk_hdmi_pll_calc() was wrong when it has
been replaced by 'div_u64'.
Fix the issue by multiplying the values in the denominator instead of
dividing them.
Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Link: https://lore.kernel.org/r/20230413-fixes-for-mt8195-hdmi-phy-v2-2-bbad62e64321@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The ret variable in mtk_hdmi_pll_calc() was used unitialized as reported
by the kernel test robot.
Fix the issue by removing the variable altogether and testing out the
return value of mtk_hdmi_pll_set_hw()
Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230413-fixes-for-mt8195-hdmi-phy-v2-1-bbad62e64321@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Fix a potential race in gmap_make_secure() and remove the last user of
follow_page() without FOLL_GET.
The old code is locking something it doesn't have a reference to, and
as explained by Jason and David in this discussion:
https://lore.kernel.org/linux-mm/Y9J4P%2FRNvY1Ztn0Q@nvidia.com/
it can lead to all kind of bad things, including the page getting
unmapped (MADV_DONTNEED), freed, reallocated as a larger folio and the
unlock_page() would target the wrong bit.
There is also another race with the FOLL_WRITE, which could race
between the follow_page() and the get_locked_pte().
The main point is to remove the last use of follow_page() without
FOLL_GET or FOLL_PIN, removing the races can be considered a nice
bonus.
Link: https://lore.kernel.org/linux-mm/Y9J4P%2FRNvY1Ztn0Q@nvidia.com/
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Fixes: 214d9bbcd3a6 ("s390/mm: provide memory management functions for protected KVM guests")
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20230428092753.27913-2-imbrenda@linux.ibm.com>
On machines without the Destroy Secure Configuration Fast UVC, the
topmost level of page tables is set aside and freed asynchronously
as last step of the asynchronous teardown.
Each gmap has a host_to_guest radix tree mapping host (userspace)
addresses (with 1M granularity) to gmap segment table entries (pmds).
If a guest is smaller than 2GB, the topmost level of page tables is the
segment table (i.e. there are only 2 levels). Replacing it means that
the pointers in the host_to_guest mapping would become stale and cause
all kinds of nasty issues.
This patch fixes the issue by disallowing asynchronous teardown for
guests with only 2 levels of page tables. Userspace should (and already
does) try using the normal destroy if the asynchronous one fails.
Update s390_replace_asce so it refuses to replace segment type ASCEs.
This is still needed in case the normal destroy VM fails.
Fixes: fb491d5500a7 ("KVM: s390: pv: asynchronous destroy for reboot")
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20230421085036.52511-2-imbrenda@linux.ibm.com>
Once command submission failed due to userptr invalidation in
amdgpu_cs_submit, legacy code will perform cleanup of scheduler
job. However, it's not needed at all, as former commit has integrated
job cleanup stuff into amdgpu_job_free. Otherwise, because of double
free, a NULL pointer dereference will occur in such scenario.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2457
Fixes: f7d66fb2ea43 ("drm/amdgpu: cleanup scheduler job initialization v2")
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
[Why]
Reading pipe_fuses from register may have invalid bits set, which may
affect the num_pipes erroneously.
[How]
Add read_pipes_fuses() call and filter bits based on expected number
of pipes.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
[Why & How]
Previous Z8 watermark values were causing flickering and OTC underflow.
Updating Z8 watermark values based on the measurement.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Leo Chen <sancchen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
This WPTR_POLL_ENABLE is a hardware contigious polling which will cause
FCLK and UCLK to keep on a high level.
Mostly its case can be covered by F32_WPTR_POLL_ENABLE which polls by
firmware.
So to save power, SR-IOV also needs to disable this bit
Signed-off-by: Horace Chen <horace.chen@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
mgr->ctx_handles should be protected by mgr->lock.
v2: improve commit message
v3: add a Fixes tag
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Fixes: 52c6a62c64fa ("drm/amdgpu: add interface for editing a foreign process's priority v3")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
As made mention of in commit 08c677cb0b43 ("drm/amdgpu: fix
amdgpu_irq_put call trace in gmc_v10_0_hw_fini") and commit 13af556104fa
("drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini"). It
is meaningless to call amdgpu_irq_put() for gmc.ecc_irq. So, remove it
from gmc_v9_0_hw_fini().
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2522
Fixes: 3029c855d79f ("drm/amdgpu: Fix desktop freezed after gpu-reset")
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
[Why]
The selfring doorbell aperture will change when resize FB
BAR successfully during gmc sw init, we should reorder
the sequence of enabling doorbell selfring aperture.
[How]
Move enable_doorbell_selfring_aperture from *_common_hw_init
to *_common_late_init.
This fixes the potential issue that GPU ring its own
doorbell when this device is in translated mode when
iommu is on.
v2: Remove *_enable_doorbell_aperture functions (Christian)
v3: Add comments to note that why we need enable doorbell
selfring late (Christian)
Signed-off-by: Shane Xiao <shane.xiao@amd.com>
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Tested-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com>
Reviewed-by: Christian K�nig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Before this change, sienna_cichlid_get_reset_handler will always
return NULL, although the module parameter reset_method is 3
when loading amdgpu driver.
Signed-off-by: lyndonli <Lyndon.Li@amd.com>
Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
- Calculate correct argument pointer in real64_call_asm()
- Cleanup mmap implementation regarding color alignment (John David Anglin)
- Spinlock fixes in panic path (Guilherme G. Piccoli)
- build doc update for parisc64 (Randy Dunlap)
- Ensure page alignment in flush functions
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Merge tag 'parisc-for-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Two important fixes in here:
- The argument pointer register was wrong when calling 64-bit
firmware functions, which may cause random memory corruption or
crashes.
- Ensure page alignment in cache flush functions, otherwise not all
memory might get flushed.
The rest are cleanups (mmap implementation, panic path) and usual
smaller updates.
Summary:
- Calculate correct argument pointer in real64_call_asm()
- Cleanup mmap implementation regarding color alignment (John David
Anglin)
- Spinlock fixes in panic path (Guilherme G. Piccoli)
- build doc update for parisc64 (Randy Dunlap)
- Ensure page alignment in flush functions"
* tag 'parisc-for-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix argument pointer in real64_call_asm()
parisc: Cleanup mmap implementation regarding color alignment
parisc: Drop HP-UX constants and structs from grfioctl.h
parisc: Ensure page alignment in flush functions
parisc: Replace regular spinlock with spin_trylock on panic path
parisc: update kbuild doc. aliases for parisc64
parisc: Limit amount of kgdb breakpoints on parisc
There is only one fix by Arnd far for modules pending which came in after
the first pull request. The issue was found as part of some late compile
tests with 0-day. I take it 0-day does some secondary late builds with
after some initial ones.
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Merge tag 'modules-6.4-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull modules fix from Luis Chamberlain:
"One fix by Arnd far for modules which came in after the first pull
request.
The issue was found as part of some late compile tests with 0-day. I
take it 0-day does some secondary late builds with after some initial
ones"
* tag 'modules-6.4-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
module: include internal.h in module/dups.c
As mentioned on my first pull request for sysctl-next, for v6.4-rc1
we're very close to being able to deprecating register_sysctl_paths().
I was going to assess the situation after the first week of the merge
window.
That time is now and things are looking good. We only have one stragglers
on the patch which had already an ACK for so I'm picking this up here now and
the last patch is the one that uses an axe. Some careful eyeballing would
be appreciated by others. If this doesn't get properly reviewed I can also
just hold off on this in my tree for the next merge window. Either way is
fine by me.
I have boot tested the last patch and 0-day build completed successfully.
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Merge tag 'sysctl-6.4-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull more sysctl updates from Luis Chamberlain:
"As mentioned on my first pull request for sysctl-next, for v6.4-rc1
we're very close to being able to deprecating register_sysctl_paths().
I was going to assess the situation after the first week of the merge
window.
That time is now and things are looking good. We only have one which
had already an ACK for so I'm picking this up here now and the last
patch is the one that uses an axe.
I have boot tested the last patch and 0-day build completed
successfully"
* tag 'sysctl-6.4-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
sysctl: remove register_sysctl_paths()
kernel: pid_namespace: simplify sysctls with register_sysctl()
- Make stub data pages configurable
- Make it harder to mix user and kernel code by accident
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Merge tag 'uml-for-linus-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull uml updates from Richard Weinberger:
- Make stub data pages configurable
- Make it harder to mix user and kernel code by accident
* tag 'uml-for-linus-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
um: make stub data pages size tweakable
um: prevent user code in modules
um: further clean up user_syms
um: don't export printf()
um: hostfs: define our own API boundary
um: add __weak for exported functions
UBI:
- Fix error value for try_write_vid_and_data()
- Minor cleanups
UBIFS:
- Fixes for various memory leaks
- Minor cleanups
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Merge tag 'ubifs-for-linus-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
"UBI:
- Fix error value for try_write_vid_and_data()
- Minor cleanups
UBIFS:
- Fixes for various memory leaks
- Minor cleanups"
* tag 'ubifs-for-linus-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
ubifs: Fix memleak when insert_old_idx() failed
Revert "ubifs: dirty_cow_znode: Fix memleak in error handling path"
ubifs: Fix memory leak in do_rename
ubifs: Free memory for tmpfile name
ubi: Fix return value overwrite issue in try_write_vid_and_data()
ubifs: Remove return in compr_exit()
ubi: Simplify bool conversion
- Make test_resume work again after the changes that made hibernation
open the snapshot device in exclusive mode (Chen Yu).
- Clean up code in several places in intel_idle (Artem Bityutskiy).
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Merge tag 'pm-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These fix a hibernation test mode regression and clean up the
intel_idle driver.
Specifics:
- Make test_resume work again after the changes that made hibernation
open the snapshot device in exclusive mode (Chen Yu)
- Clean up code in several places in intel_idle (Artem Bityutskiy)"
* tag 'pm-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
intel_idle: mark few variables as __read_mostly
intel_idle: do not sprinkle module parameter definitions around
intel_idle: fix confusing message
intel_idle: improve C-state flags handling robustness
intel_idle: further intel_idle_init_cstates_icpu() cleanup
intel_idle: clean up intel_idle_init_cstates_icpu()
intel_idle: use pr_info() instead of printk()
PM: hibernate: Do not get block device exclusively in test_resume mode
PM: hibernate: Turn snapshot_test into global variable
- Do not turn off unused power resources during initialization on the
Toshiba Click Mini (Hans de Goede).
- Support strings in device properties supplied by ACPI _DSM on Apple
platforms (Hector Martin).
- Add an ACPI device ID quirk for Lenovo Yoga Tablet 2 (Marius Hoch).
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Merge tag 'acpi-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These add two ACPI-related quirks and extend support for Apple device
properties supplied via ACPI _DSM.
Specifics:
- Do not turn off unused power resources during initialization on the
Toshiba Click Mini (Hans de Goede)
- Support strings in device properties supplied by ACPI _DSM on Apple
platforms (Hector Martin)
- Add an ACPI device ID quirk for Lenovo Yoga Tablet 2 (Marius Hoch)"
* tag 'acpi-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: property: Support strings in Apple _DSM props
ACPI: x86: utils: Remove Lenovo Yoga Tablet 2's MAGN0001
ACPI: PM: Do not turn of unused power resources on the Toshiba Click Mini
