6fedc28076
8092 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
6fedc28076 |
RCU pull request for v5.16
This pull request contains the following branches:
fixes.2021.10.07a: Miscellaneous fixes.
scftorture.2021.09.16a: smp_call_function torture-test updates, most
notably better checking of module parameters.
tasks.2021.09.15a: Tasks-trace RCU updates that fix a number of rare
but important race-condition bugs.
torture.2021.09.13b: Other torture-test updates, most notably
better checking of module parameters. In addition, rcutorture
may now be run on CONFIG_PREEMPT_RT kernels.
torturescript.2021.09.16a: Torture-test scripting updates, most notably
specifying the new CONFIG_KCSAN_STRICT kconfig option rather
than maintaining an ever-changing list of individual KCSAN
kconfig options.
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Merge tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Miscellaneous fixes
- Torture-test updates for smp_call_function(), most notably improved
checking of module parameters.
- Tasks-trace RCU updates that fix a number of rare but important
race-condition bugs.
- Other torture-test updates, most notably better checking of module
parameters. In addition, rcutorture may once again be run on
CONFIG_PREEMPT_RT kernels.
- Torture-test scripting updates, most notably specifying the new
CONFIG_KCSAN_STRICT kconfig option rather than maintaining an
ever-changing list of individual KCSAN kconfig options.
* tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (46 commits)
rcu: Fix rcu_dynticks_curr_cpu_in_eqs() vs noinstr
rcu: Always inline rcu_dynticks_task*_{enter,exit}()
torture: Make kvm-remote.sh print size of downloaded tarball
torture: Allot 1G of memory for scftorture runs
tools/rcu: Add an extract-stall script
scftorture: Warn on individual scf_torture_init() error conditions
scftorture: Count reschedule IPIs
scftorture: Account for weight_resched when checking for all zeroes
scftorture: Shut down if nonsensical arguments given
scftorture: Allow zero weight to exclude an smp_call_function*() category
rcu: Avoid unneeded function call in rcu_read_unlock()
rcu-tasks: Update comments to cond_resched_tasks_rcu_qs()
rcu-tasks: Fix IPI failure handling in trc_wait_for_one_reader
rcu-tasks: Fix read-side primitives comment for call_rcu_tasks_trace
rcu-tasks: Clarify read side section info for rcu_tasks_rude GP primitives
rcu-tasks: Correct comparisons for CPU numbers in show_stalled_task_trace
rcu-tasks: Correct firstreport usage in check_all_holdout_tasks_trace
rcu-tasks: Fix s/rcu_add_holdout/trc_add_holdout/ typo in comment
rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread() loop
rcu-tasks: Fix s/instruction/instructions/ typo in comment
...
|
||
|
Linus Torvalds
|
79ef0c0014 |
Tracing updates for 5.16:
- kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYYBdxhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qp1sAQD2oYFwaG3sx872gj/myBcHIBSKdiki Hry5csd8zYDBpgD+Poylopt5JIbeDuoYw/BedgEXmscZ8Qr7VzjAXdnv/Q4= =Loz8 -----END PGP SIGNATURE----- Merge tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: - kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. * tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits) tracing/histogram: Fix semicolon.cocci warnings tracing/histogram: Fix documentation inline emphasis warning tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together tracing: Show size of requested perf buffer bootconfig: Initialize ret in xbc_parse_tree() ftrace: do CPU checking after preemption disabled ftrace: disable preemption when recursion locked tracing/histogram: Document expression arithmetic and constants tracing/histogram: Optimize division by a power of 2 tracing/histogram: Covert expr to const if both operands are constants tracing/histogram: Simplify handling of .sym-offset in expressions tracing: Fix operator precedence for hist triggers expression tracing: Add division and multiplication support for hist triggers tracing: Add support for creating hist trigger variables from literal selftests/ftrace: Stop tracing while reading the trace file by default MAINTAINERS: Update KPROBES and TRACING entries test_kprobes: Move it from kernel/ to lib/ docs, kprobes: Remove invalid URL and add new reference samples/kretprobes: Fix return value if register_kretprobe() failed lib/bootconfig: Fix the xbc_get_info kerneldoc ... |
||
|
Linus Torvalds
|
46f8763228 |
arm64 updates for 5.16
- Support for the Arm8.6 timer extensions, including a self-synchronising
view of the system registers to elide some expensive ISB instructions.
- Exception table cleanup and rework so that the fixup handlers appear
correctly in backtraces.
- A handful of miscellaneous changes, the main one being selection of
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK.
- More mm and pgtable cleanups.
- KASAN support for "asymmetric" MTE, where tag faults are reported
synchronously for loads (via an exception) and asynchronously for
stores (via a register).
- Support for leaving the MMU enabled during kexec relocation, which
significantly speeds up the operation.
- Minor improvements to our perf PMU drivers.
- Improvements to the compat vDSO build system, particularly when
building with LLVM=1.
- Preparatory work for handling some Coresight TRBE tracing errata.
- Cleanup and refactoring of the SVE code to pave the way for SME
support in future.
- Ensure SCS pages are unpoisoned immediately prior to freeing them
when KASAN is enabled for the vmalloc area.
- Try moving to the generic pfn_valid() implementation again now that
the DMA mapping issue from last time has been resolved.
- Numerous improvements and additions to our FPSIMD and SVE selftests.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's the usual summary below, but the highlights are support for
the Armv8.6 timer extensions, KASAN support for asymmetric MTE, the
ability to kexec() with the MMU enabled and a second attempt at
switching to the generic pfn_valid() implementation.
Summary:
- Support for the Arm8.6 timer extensions, including a
self-synchronising view of the system registers to elide some
expensive ISB instructions.
- Exception table cleanup and rework so that the fixup handlers
appear correctly in backtraces.
- A handful of miscellaneous changes, the main one being selection of
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK.
- More mm and pgtable cleanups.
- KASAN support for "asymmetric" MTE, where tag faults are reported
synchronously for loads (via an exception) and asynchronously for
stores (via a register).
- Support for leaving the MMU enabled during kexec relocation, which
significantly speeds up the operation.
- Minor improvements to our perf PMU drivers.
- Improvements to the compat vDSO build system, particularly when
building with LLVM=1.
- Preparatory work for handling some Coresight TRBE tracing errata.
- Cleanup and refactoring of the SVE code to pave the way for SME
support in future.
- Ensure SCS pages are unpoisoned immediately prior to freeing them
when KASAN is enabled for the vmalloc area.
- Try moving to the generic pfn_valid() implementation again now that
the DMA mapping issue from last time has been resolved.
- Numerous improvements and additions to our FPSIMD and SVE
selftests"
[ armv8.6 timer updates were in a shared branch and already came in
through -tip in the timer pull - Linus ]
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (85 commits)
arm64: Select POSIX_CPU_TIMERS_TASK_WORK
arm64: Document boot requirements for FEAT_SME_FA64
arm64/sve: Fix warnings when SVE is disabled
arm64/sve: Add stub for sve_max_virtualisable_vl()
arm64: errata: Add detection for TRBE write to out-of-range
arm64: errata: Add workaround for TSB flush failures
arm64: errata: Add detection for TRBE overwrite in FILL mode
arm64: Add Neoverse-N2, Cortex-A710 CPU part definition
selftests: arm64: Factor out utility functions for assembly FP tests
arm64: vmlinux.lds.S: remove `.fixup` section
arm64: extable: add load_unaligned_zeropad() handler
arm64: extable: add a dedicated uaccess handler
arm64: extable: add `type` and `data` fields
arm64: extable: use `ex` for `exception_table_entry`
arm64: extable: make fixup_exception() return bool
arm64: extable: consolidate definitions
arm64: gpr-num: support W registers
arm64: factor out GPR numbering helpers
arm64: kvm: use kvm_exception_table_entry
arm64: lib: __arch_copy_to_user(): fold fixups into body
...
|
||
|
Linus Torvalds
|
8cb1ae19bf |
x86/fpu updates:
- Cleanup of extable fixup handling to be more robust, which in turn
allows to make the FPU exception fixups more robust as well.
- Change the return code for signal frame related failures from explicit
error codes to a boolean fail/success as that's all what the calling
code evaluates.
- A large refactoring of the FPU code to prepare for adding AMX support:
- Distangle the public header maze and remove especially the misnomed
kitchen sink internal.h which is despite it's name included all over
the place.
- Add a proper abstraction for the register buffer storage (struct
fpstate) which allows to dynamically size the buffer at runtime by
flipping the pointer to the buffer container from the default
container which is embedded in task_struct::tread::fpu to a
dynamically allocated container with a larger register buffer.
- Convert the code over to the new fpstate mechanism.
- Consolidate the KVM FPU handling by moving the FPU related code into
the FPU core which removes the number of exports and avoids adding
even more export when AMX has to be supported in KVM. This also
removes duplicated code which was of course unnecessary different and
incomplete in the KVM copy.
- Simplify the KVM FPU buffer handling by utilizing the new fpstate
container and just switching the buffer pointer from the user space
buffer to the KVM guest buffer when entering vcpu_run() and flipping
it back when leaving the function. This cuts the memory requirements
of a vCPU for FPU buffers in half and avoids pointless memory copy
operations.
This also solves the so far unresolved problem of adding AMX support
because the current FPU buffer handling of KVM inflicted a circular
dependency between adding AMX support to the core and to KVM. With
the new scheme of switching fpstate AMX support can be added to the
core code without affecting KVM.
- Replace various variables with proper data structures so the extra
information required for adding dynamically enabled FPU features (AMX)
can be added in one place
- Add AMX (Advanved Matrix eXtensions) support (finally):
AMX is a large XSTATE component which is going to be available with
Saphire Rapids XEON CPUs. The feature comes with an extra MSR (MSR_XFD)
which allows to trap the (first) use of an AMX related instruction,
which has two benefits:
1) It allows the kernel to control access to the feature
2) It allows the kernel to dynamically allocate the large register
state buffer instead of burdening every task with the the extra 8K
or larger state storage.
It would have been great to gain this kind of control already with
AVX512.
The support comes with the following infrastructure components:
1) arch_prctl() to
- read the supported features (equivalent to XGETBV(0))
- read the permitted features for a task
- request permission for a dynamically enabled feature
Permission is granted per process, inherited on fork() and cleared
on exec(). The permission policy of the kernel is restricted to
sigaltstack size validation, but the syscall obviously allows
further restrictions via seccomp etc.
2) A stronger sigaltstack size validation for sys_sigaltstack(2) which
takes granted permissions and the potentially resulting larger
signal frame into account. This mechanism can also be used to
enforce factual sigaltstack validation independent of dynamic
features to help with finding potential victims of the 2K
sigaltstack size constant which is broken since AVX512 support was
added.
3) Exception handling for #NM traps to catch first use of a extended
feature via a new cause MSR. If the exception was caused by the use
of such a feature, the handler checks permission for that
feature. If permission has not been granted, the handler sends a
SIGILL like the #UD handler would do if the feature would have been
disabled in XCR0. If permission has been granted, then a new fpstate
which fits the larger buffer requirement is allocated.
In the unlikely case that this allocation fails, the handler sends
SIGSEGV to the task. That's not elegant, but unavoidable as the
other discussed options of preallocation or full per task
permissions come with their own set of horrors for kernel and/or
userspace. So this is the lesser of the evils and SIGSEGV caused by
unexpected memory allocation failures is not a fundamentally new
concept either.
When allocation succeeds, the fpstate properties are filled in to
reflect the extended feature set and the resulting sizes, the
fpu::fpstate pointer is updated accordingly and the trap is disarmed
for this task permanently.
4) Enumeration and size calculations
5) Trap switching via MSR_XFD
The XFD (eXtended Feature Disable) MSR is context switched with the
same life time rules as the FPU register state itself. The mechanism
is keyed off with a static key which is default disabled so !AMX
equipped CPUs have zero overhead. On AMX enabled CPUs the overhead
is limited by comparing the tasks XFD value with a per CPU shadow
variable to avoid redundant MSR writes. In case of switching from a
AMX using task to a non AMX using task or vice versa, the extra MSR
write is obviously inevitable.
All other places which need to be aware of the variable feature sets
and resulting variable sizes are not affected at all because they
retrieve the information (feature set, sizes) unconditonally from
the fpstate properties.
6) Enable the new AMX states
Note, this is relatively new code despite the fact that AMX support is in
the works for more than a year now.
The big refactoring of the FPU code, which allowed to do a proper
integration has been started exactly 3 weeks ago. Refactoring of the
existing FPU code and of the original AMX patches took a week and has
been subject to extensive review and testing. The only fallout which has
not been caught in review and testing right away was restricted to AMX
enabled systems, which is completely irrelevant for anyone outside Intel
and their early access program. There might be dragons lurking as usual,
but so far the fine grained refactoring has held up and eventual yet
undetected fallout is bisectable and should be easily addressable before
the 5.16 release. Famous last words...
Many thanks to Chang Bae and Dave Hansen for working hard on this and
also to the various test teams at Intel who reserved extra capacity to
follow the rapid development of this closely which provides the
confidence level required to offer this rather large update for inclusion
into 5.16-rc1.
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Merge tag 'x86-fpu-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Thomas Gleixner:
- Cleanup of extable fixup handling to be more robust, which in turn
allows to make the FPU exception fixups more robust as well.
- Change the return code for signal frame related failures from
explicit error codes to a boolean fail/success as that's all what the
calling code evaluates.
- A large refactoring of the FPU code to prepare for adding AMX
support:
- Distangle the public header maze and remove especially the
misnomed kitchen sink internal.h which is despite it's name
included all over the place.
- Add a proper abstraction for the register buffer storage (struct
fpstate) which allows to dynamically size the buffer at runtime
by flipping the pointer to the buffer container from the default
container which is embedded in task_struct::tread::fpu to a
dynamically allocated container with a larger register buffer.
- Convert the code over to the new fpstate mechanism.
- Consolidate the KVM FPU handling by moving the FPU related code
into the FPU core which removes the number of exports and avoids
adding even more export when AMX has to be supported in KVM.
This also removes duplicated code which was of course
unnecessary different and incomplete in the KVM copy.
- Simplify the KVM FPU buffer handling by utilizing the new
fpstate container and just switching the buffer pointer from the
user space buffer to the KVM guest buffer when entering
vcpu_run() and flipping it back when leaving the function. This
cuts the memory requirements of a vCPU for FPU buffers in half
and avoids pointless memory copy operations.
This also solves the so far unresolved problem of adding AMX
support because the current FPU buffer handling of KVM inflicted
a circular dependency between adding AMX support to the core and
to KVM. With the new scheme of switching fpstate AMX support can
be added to the core code without affecting KVM.
- Replace various variables with proper data structures so the
extra information required for adding dynamically enabled FPU
features (AMX) can be added in one place
- Add AMX (Advanced Matrix eXtensions) support (finally):
AMX is a large XSTATE component which is going to be available with
Saphire Rapids XEON CPUs. The feature comes with an extra MSR
(MSR_XFD) which allows to trap the (first) use of an AMX related
instruction, which has two benefits:
1) It allows the kernel to control access to the feature
2) It allows the kernel to dynamically allocate the large register
state buffer instead of burdening every task with the the extra
8K or larger state storage.
It would have been great to gain this kind of control already with
AVX512.
The support comes with the following infrastructure components:
1) arch_prctl() to
- read the supported features (equivalent to XGETBV(0))
- read the permitted features for a task
- request permission for a dynamically enabled feature
Permission is granted per process, inherited on fork() and
cleared on exec(). The permission policy of the kernel is
restricted to sigaltstack size validation, but the syscall
obviously allows further restrictions via seccomp etc.
2) A stronger sigaltstack size validation for sys_sigaltstack(2)
which takes granted permissions and the potentially resulting
larger signal frame into account. This mechanism can also be used
to enforce factual sigaltstack validation independent of dynamic
features to help with finding potential victims of the 2K
sigaltstack size constant which is broken since AVX512 support
was added.
3) Exception handling for #NM traps to catch first use of a extended
feature via a new cause MSR. If the exception was caused by the
use of such a feature, the handler checks permission for that
feature. If permission has not been granted, the handler sends a
SIGILL like the #UD handler would do if the feature would have
been disabled in XCR0. If permission has been granted, then a new
fpstate which fits the larger buffer requirement is allocated.
In the unlikely case that this allocation fails, the handler
sends SIGSEGV to the task. That's not elegant, but unavoidable as
the other discussed options of preallocation or full per task
permissions come with their own set of horrors for kernel and/or
userspace. So this is the lesser of the evils and SIGSEGV caused
by unexpected memory allocation failures is not a fundamentally
new concept either.
When allocation succeeds, the fpstate properties are filled in to
reflect the extended feature set and the resulting sizes, the
fpu::fpstate pointer is updated accordingly and the trap is
disarmed for this task permanently.
4) Enumeration and size calculations
5) Trap switching via MSR_XFD
The XFD (eXtended Feature Disable) MSR is context switched with
the same life time rules as the FPU register state itself. The
mechanism is keyed off with a static key which is default
disabled so !AMX equipped CPUs have zero overhead. On AMX enabled
CPUs the overhead is limited by comparing the tasks XFD value
with a per CPU shadow variable to avoid redundant MSR writes. In
case of switching from a AMX using task to a non AMX using task
or vice versa, the extra MSR write is obviously inevitable.
All other places which need to be aware of the variable feature
sets and resulting variable sizes are not affected at all because
they retrieve the information (feature set, sizes) unconditonally
from the fpstate properties.
6) Enable the new AMX states
Note, this is relatively new code despite the fact that AMX support
is in the works for more than a year now.
The big refactoring of the FPU code, which allowed to do a proper
integration has been started exactly 3 weeks ago. Refactoring of the
existing FPU code and of the original AMX patches took a week and has
been subject to extensive review and testing. The only fallout which
has not been caught in review and testing right away was restricted
to AMX enabled systems, which is completely irrelevant for anyone
outside Intel and their early access program. There might be dragons
lurking as usual, but so far the fine grained refactoring has held up
and eventual yet undetected fallout is bisectable and should be
easily addressable before the 5.16 release. Famous last words...
Many thanks to Chang Bae and Dave Hansen for working hard on this and
also to the various test teams at Intel who reserved extra capacity
to follow the rapid development of this closely which provides the
confidence level required to offer this rather large update for
inclusion into 5.16-rc1
* tag 'x86-fpu-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits)
Documentation/x86: Add documentation for using dynamic XSTATE features
x86/fpu: Include vmalloc.h for vzalloc()
selftests/x86/amx: Add context switch test
selftests/x86/amx: Add test cases for AMX state management
x86/fpu/amx: Enable the AMX feature in 64-bit mode
x86/fpu: Add XFD handling for dynamic states
x86/fpu: Calculate the default sizes independently
x86/fpu/amx: Define AMX state components and have it used for boot-time checks
x86/fpu/xstate: Prepare XSAVE feature table for gaps in state component numbers
x86/fpu/xstate: Add fpstate_realloc()/free()
x86/fpu/xstate: Add XFD #NM handler
x86/fpu: Update XFD state where required
x86/fpu: Add sanity checks for XFD
x86/fpu: Add XFD state to fpstate
x86/msr-index: Add MSRs for XFD
x86/cpufeatures: Add eXtended Feature Disabling (XFD) feature bit
x86/fpu: Reset permission and fpstate on exec()
x86/fpu: Prepare fpu_clone() for dynamically enabled features
x86/fpu/signal: Prepare for variable sigframe length
x86/signal: Use fpu::__state_user_size for sigalt stack validation
...
|
||
|
Linus Torvalds
|
9a7e0a90a4 |
Scheduler updates:
- Revert the printk format based wchan() symbol resolution as it can leak
the raw value in case that the symbol is not resolvable.
- Make wchan() more robust and work with all kind of unwinders by
enforcing that the task stays blocked while unwinding is in progress.
- Prevent sched_fork() from accessing an invalid sched_task_group
- Improve asymmetric packing logic
- Extend scheduler statistics to RT and DL scheduling classes and add
statistics for bandwith burst to the SCHED_FAIR class.
- Properly account SCHED_IDLE entities
- Prevent a potential deadlock when initial priority is assigned to a
newly created kthread. A recent change to plug a race between cpuset and
__sched_setscheduler() introduced a new lock dependency which is now
triggered. Break the lock dependency chain by moving the priority
assignment to the thread function.
- Fix the idle time reporting in /proc/uptime for NOHZ enabled systems.
- Improve idle balancing in general and especially for NOHZ enabled
systems.
- Provide proper interfaces for live patching so it does not have to
fiddle with scheduler internals.
- Add cluster aware scheduling support.
- A small set of tweaks for RT (irqwork, wait_task_inactive(), various
scheduler options and delaying mmdrop)
- The usual small tweaks and improvements all over the place
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Merge tag 'sched-core-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Thomas Gleixner:
- Revert the printk format based wchan() symbol resolution as it can
leak the raw value in case that the symbol is not resolvable.
- Make wchan() more robust and work with all kind of unwinders by
enforcing that the task stays blocked while unwinding is in progress.
- Prevent sched_fork() from accessing an invalid sched_task_group
- Improve asymmetric packing logic
- Extend scheduler statistics to RT and DL scheduling classes and add
statistics for bandwith burst to the SCHED_FAIR class.
- Properly account SCHED_IDLE entities
- Prevent a potential deadlock when initial priority is assigned to a
newly created kthread. A recent change to plug a race between cpuset
and __sched_setscheduler() introduced a new lock dependency which is
now triggered. Break the lock dependency chain by moving the priority
assignment to the thread function.
- Fix the idle time reporting in /proc/uptime for NOHZ enabled systems.
- Improve idle balancing in general and especially for NOHZ enabled
systems.
- Provide proper interfaces for live patching so it does not have to
fiddle with scheduler internals.
- Add cluster aware scheduling support.
- A small set of tweaks for RT (irqwork, wait_task_inactive(), various
scheduler options and delaying mmdrop)
- The usual small tweaks and improvements all over the place
* tag 'sched-core-2021-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits)
sched/fair: Cleanup newidle_balance
sched/fair: Remove sysctl_sched_migration_cost condition
sched/fair: Wait before decaying max_newidle_lb_cost
sched/fair: Skip update_blocked_averages if we are defering load balance
sched/fair: Account update_blocked_averages in newidle_balance cost
x86: Fix __get_wchan() for !STACKTRACE
sched,x86: Fix L2 cache mask
sched/core: Remove rq_relock()
sched: Improve wake_up_all_idle_cpus() take #2
irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT
irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT
irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support.
sched/rt: Annotate the RT balancing logic irqwork as IRQ_WORK_HARD_IRQ
sched: Add cluster scheduler level for x86
sched: Add cluster scheduler level in core and related Kconfig for ARM64
topology: Represent clusters of CPUs within a die
sched: Disable -Wunused-but-set-variable
sched: Add wrapper for get_wchan() to keep task blocked
x86: Fix get_wchan() to support the ORC unwinder
proc: Use task_is_running() for wchan in /proc/$pid/stat
...
|
||
|
Linus Torvalds
|
595b28fb0c |
Locking updates:
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes. The main use case is emulating Windows' WaitForMultipleObjects
which allows Wine to improve the performance of Windows Games. Also
native Linux games can benefit from this interface as this is a common
wait pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to rework
their eviction code step by step without making lockdep upset until the
final steps of rework are completed. It's also useful for regulator and
TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
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Merge tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Thomas Gleixner:
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes.
The main use case is emulating Windows' WaitForMultipleObjects which
allows Wine to improve the performance of Windows Games. Also native
Linux games can benefit from this interface as this is a common wait
pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to
rework their eviction code step by step without making lockdep upset
until the final steps of rework are completed. It's also useful for
regulator and TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
* tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
locking: Remove spin_lock_flags() etc
locking/rwsem: Fix comments about reader optimistic lock stealing conditions
locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()
locking/rwsem: Disable preemption for spinning region
docs: futex: Fix kernel-doc references
futex: Fix PREEMPT_RT build
futex2: Documentation: Document sys_futex_waitv() uAPI
selftests: futex: Test sys_futex_waitv() wouldblock
selftests: futex: Test sys_futex_waitv() timeout
selftests: futex: Add sys_futex_waitv() test
futex,arm: Wire up sys_futex_waitv()
futex,x86: Wire up sys_futex_waitv()
futex: Implement sys_futex_waitv()
futex: Simplify double_lock_hb()
futex: Split out wait/wake
futex: Split out requeue
futex: Rename mark_wake_futex()
futex: Rename: match_futex()
futex: Rename: hb_waiter_{inc,dec,pending}()
futex: Split out PI futex
...
|
||
David Yang
|
9c7516d669 |
tools/testing/selftests/vm/split_huge_page_test.c: fix application of sizeof to pointer
The coccinelle check report: ./tools/testing/selftests/vm/split_huge_page_test.c:344:36-42: ERROR: application of sizeof to pointer Use "strlen" to fix it. Link: https://lkml.kernel.org/r/20211012030116.184027-1-davidcomponentone@gmail.com Signed-off-by: David Yang <davidcomponentone@gmail.com> Reported-by: Zeal Robot <zealci@zte.com.cn> Cc: Zi Yan <ziy@nvidia.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Chang S. Bae
|
101c669d16 |
selftests/x86/amx: Add context switch test
XSAVE state is thread-local. The kernel switches between thread state at context switch time. Generally, running a selftest for a while will naturally expose it to some context switching and and will test the XSAVE code. Instead of just hoping that the tests get context-switched at random times, force context-switches on purpose. Spawn off a few userspace threads and force context-switches between them. Ensure that the kernel correctly context switches each thread's unique AMX state. [ dhansen: bunches of cleanups ] Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20211026122525.6EFD5758@davehans-spike.ostc.intel.com |
||
|
Chang S. Bae
|
6a3e0651b4 |
selftests/x86/amx: Add test cases for AMX state management
AMX TILEDATA is a very large XSAVE feature. It could have caused nasty XSAVE buffer space waste in two places: * Signal stacks * Kernel task_struct->fpu buffers To avoid this waste, neither of these buffers have AMX state by default. The non-default features are called "dynamic" features. There is an arch_prctl(ARCH_REQ_XCOMP_PERM) which allows a task to declare that it wants to use AMX or other "dynamic" XSAVE features. This arch_prctl() ensures that sufficient sigaltstack space is available before it will succeed. It also expands the task_struct buffer. Functions of this test: * Test arch_prctl(ARCH_REQ_XCOMP_PERM). Ensure that it checks for proper sigaltstack sizing and that the sizing is enforced for future sigaltstack calls. * Ensure that ARCH_REQ_XCOMP_PERM is inherited across fork() * Ensure that TILEDATA use before the prctl() is fatal * Ensure that TILEDATA is cleared across fork() Note: Generally, compiler support is needed to do something with AMX. Instead, directly load AMX state from userspace with a plain XSAVE. Do not depend on the compiler. [ dhansen: bunches of cleanups ] Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20211026122524.7BEDAA95@davehans-spike.ostc.intel.com |
||
Masami Hiramatsu
|
25b9513872 |
selftests/ftrace: Stop tracing while reading the trace file by default
Stop tracing while reading the trace file by default, to prevent the test results while checking it and to avoid taking a long time to check the result. If there is any testcase which wants to test the tracing while reading the trace file, please override this setting inside the test case. This also recovers the pause-on-trace when clean it up. Link: https://lkml.kernel.org/r/163529053143.690749.15365238954175942026.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
Jakub Kicinski
|
440ffcdd9d |
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says: ==================== pull-request: bpf 2021-10-26 We've added 12 non-merge commits during the last 7 day(s) which contain a total of 23 files changed, 118 insertions(+), 98 deletions(-). The main changes are: 1) Fix potential race window in BPF tail call compatibility check, from Toke Høiland-Jørgensen. 2) Fix memory leak in cgroup fs due to missing cgroup_bpf_offline(), from Quanyang Wang. 3) Fix file descriptor reference counting in generic_map_update_batch(), from Xu Kuohai. 4) Fix bpf_jit_limit knob to the max supported limit by the arch's JIT, from Lorenz Bauer. 5) Fix BPF sockmap ->poll callbacks for UDP and AF_UNIX sockets, from Cong Wang and Yucong Sun. 6) Fix BPF sockmap concurrency issue in TCP on non-blocking sendmsg calls, from Liu Jian. 7) Fix build failure of INODE_STORAGE and TASK_STORAGE maps on !CONFIG_NET, from Tejun Heo. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf: Fix potential race in tail call compatibility check bpf: Move BPF_MAP_TYPE for INODE_STORAGE and TASK_STORAGE outside of CONFIG_NET selftests/bpf: Use recv_timeout() instead of retries net: Implement ->sock_is_readable() for UDP and AF_UNIX skmsg: Extract and reuse sk_msg_is_readable() net: Rename ->stream_memory_read to ->sock_is_readable tcp_bpf: Fix one concurrency problem in the tcp_bpf_send_verdict function cgroup: Fix memory leak caused by missing cgroup_bpf_offline bpf: Fix error usage of map_fd and fdget() in generic_map_update_batch() bpf: Prevent increasing bpf_jit_limit above max bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT bpf: Define bpf_jit_alloc_exec_limit for riscv JIT ==================== Link: https://lore.kernel.org/r/20211026201920.11296-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Yucong Sun
|
67b821502d |
selftests/bpf: Use recv_timeout() instead of retries
We use non-blocking sockets in those tests, retrying for EAGAIN is ugly because there is no upper bound for the packet arrival time, at least in theory. After we fix poll() on sockmap sockets, now we can switch to select()+recv(). Signed-off-by: Yucong Sun <sunyucong@gmail.com> Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211008203306.37525-5-xiyou.wangcong@gmail.com |
||
Florian Westphal
|
1f83b835a3 |
fcnal-test: kill hanging ping/nettest binaries on cleanup
On my box I see a bunch of ping/nettest processes hanging around after fcntal-test.sh is done. Clean those up before netns deletion. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20211021140247.29691-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
6c2c712767 |
Networking fixes for 5.15-rc7, including fixes from netfilter, and can.
Current release - regressions:
- revert "vrf: reset skb conntrack connection on VRF rcv",
there are valid uses for previous behavior
- can: m_can: fix iomap_read_fifo() and iomap_write_fifo()
Current release - new code bugs:
- mlx5: e-switch, return correct error code on group creation failure
Previous releases - regressions:
- sctp: fix transport encap_port update in sctp_vtag_verify
- stmmac: fix E2E delay mechanism (in PTP timestamping)
Previous releases - always broken:
- netfilter: ip6t_rt: fix out-of-bounds read of ipv6_rt_hdr
- netfilter: xt_IDLETIMER: fix out-of-bound read caused by lack of init
- netfilter: ipvs: make global sysctl read-only in non-init netns
- tcp: md5: fix selection between vrf and non-vrf keys
- ipv6: count rx stats on the orig netdev when forwarding
- bridge: mcast: use multicast_membership_interval for IGMPv3
- can:
- j1939: fix UAF for rx_kref of j1939_priv
abort sessions on receiving bad messages
- isotp: fix TX buffer concurrent access in isotp_sendmsg()
fix return error on FC timeout on TX path
- ice: fix re-init of RDMA Tx queues and crash if RDMA was not inited
- hns3: schedule the polling again when allocation fails,
prevent stalls
- drivers: add missing of_node_put() when aborting
for_each_available_child_of_node()
- ptp: fix possible memory leak and UAF in ptp_clock_register()
- e1000e: fix packet loss in burst mode on Tiger Lake and later
- mlx5e: ipsec: fix more checksum offload issues
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, and can.
We'll have one more fix for a socket accounting regression, it's still
getting polished. Otherwise things look fine.
Current release - regressions:
- revert "vrf: reset skb conntrack connection on VRF rcv", there are
valid uses for previous behavior
- can: m_can: fix iomap_read_fifo() and iomap_write_fifo()
Current release - new code bugs:
- mlx5: e-switch, return correct error code on group creation failure
Previous releases - regressions:
- sctp: fix transport encap_port update in sctp_vtag_verify
- stmmac: fix E2E delay mechanism (in PTP timestamping)
Previous releases - always broken:
- netfilter: ip6t_rt: fix out-of-bounds read of ipv6_rt_hdr
- netfilter: xt_IDLETIMER: fix out-of-bound read caused by lack of
init
- netfilter: ipvs: make global sysctl read-only in non-init netns
- tcp: md5: fix selection between vrf and non-vrf keys
- ipv6: count rx stats on the orig netdev when forwarding
- bridge: mcast: use multicast_membership_interval for IGMPv3
- can:
- j1939: fix UAF for rx_kref of j1939_priv abort sessions on
receiving bad messages
- isotp: fix TX buffer concurrent access in isotp_sendmsg() fix
return error on FC timeout on TX path
- ice: fix re-init of RDMA Tx queues and crash if RDMA was not inited
- hns3: schedule the polling again when allocation fails, prevent
stalls
- drivers: add missing of_node_put() when aborting
for_each_available_child_of_node()
- ptp: fix possible memory leak and UAF in ptp_clock_register()
- e1000e: fix packet loss in burst mode on Tiger Lake and later
- mlx5e: ipsec: fix more checksum offload issues"
* tag 'net-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (75 commits)
usbnet: sanity check for maxpacket
net: enetc: make sure all traffic classes can send large frames
net: enetc: fix ethtool counter name for PM0_TERR
ptp: free 'vclock_index' in ptp_clock_release()
sfc: Don't use netif_info before net_device setup
sfc: Export fibre-specific supported link modes
net/mlx5e: IPsec: Fix work queue entry ethernet segment checksum flags
net/mlx5e: IPsec: Fix a misuse of the software parser's fields
net/mlx5e: Fix vlan data lost during suspend flow
net/mlx5: E-switch, Return correct error code on group creation failure
net/mlx5: Lag, change multipath and bonding to be mutually exclusive
ice: Add missing E810 device ids
igc: Update I226_K device ID
e1000e: Fix packet loss on Tiger Lake and later
e1000e: Separate TGP board type from SPT
ptp: Fix possible memory leak in ptp_clock_register()
net: stmmac: Fix E2E delay mechanism
nfc: st95hf: Make spi remove() callback return zero
net: hns3: disable sriov before unload hclge layer
net: hns3: fix vf reset workqueue cannot exit
...
|
||
David S. Miller
|
1439caa1d9 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter fixes for net: 1) Crash due to missing initialization of timer data in xt_IDLETIMER, from Juhee Kang. 2) NF_CONNTRACK_SECMARK should be bool in Kconfig, from Vegard Nossum. 3) Skip netdev events on netns removal, from Florian Westphal. 4) Add testcase to show port shadowing via UDP, also from Florian. 5) Remove pr_debug() code in ip6t_rt, this fixes a crash due to unsafe access to non-linear skbuff, from Xin Long. 6) Make net/ipv4/vs/debug_level read-only from non-init netns, from Antoine Tenart. 7) Remove bogus invocation to bash in selftests/netfilter/nft_flowtable.sh also from Florian. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Mark Brown
|
260ea4ba94 |
selftests: arm64: Factor out utility functions for assembly FP tests
The various floating point test programs written in assembly have a bunch of helper functions and macros which are cut'n'pasted between them. Factor them out into a separate source file which is linked into all of them. We don't include memcmp() since it isn't as generic as it should be and directly branches to report an error in the programs. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20211019181851.3341232-1-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
Peter Xu
|
8913970c19 |
mm/userfaultfd: selftests: fix memory corruption with thp enabled
In RHEL's gating selftests we've encountered memory corruption in the
uffd event test even with upstream kernel:
# ./userfaultfd anon 128 4
nr_pages: 32768, nr_pages_per_cpu: 32768
bounces: 3, mode: rnd racing read, userfaults: 6240 missing (6240) 14729 wp (14729)
bounces: 2, mode: racing read, userfaults: 1444 missing (1444) 28877 wp (28877)
bounces: 1, mode: rnd read, userfaults: 6055 missing (6055) 14699 wp (14699)
bounces: 0, mode: read, userfaults: 82 missing (82) 25196 wp (25196)
testing uffd-wp with pagemap (pgsize=4096): done
testing uffd-wp with pagemap (pgsize=2097152): done
testing events (fork, remap, remove): ERROR: nr 32427 memory corruption 0 1 (errno=0, line=963)
ERROR: faulting process failed (errno=0, line=1117)
It can be easily reproduced when global thp enabled, which is the
default for RHEL.
It's also known as a side effect of commit
|
||
Tianjia Zhang
|
d49fe5e815 |
selftests/tls: add SM4 algorithm dependency for tls selftests
Kernel TLS test has added SM4 GCM/CCM algorithm support, but SM4 algorithm is not compiled by default, this patch add SM4 config dependency. Reported-by: Hangbin Liu <liuhangbin@gmail.com> Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
368a978cc5 |
Tracing fixes for 5.15:
- Fix defined but not use warning/error for osnoise function - Fix memory leak in event probe - Fix memblock leak in bootconfig - Fix the API of event probes to be like kprobes - Added test to check removal of event probe API - Fix recordmcount.pl for nds32 failed build -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYWpB6BQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qnu/AQD1eYekS43uCDyzzpvjsz0tZ6tzVH8z ainpgtcAd11q4AD8CHLvhBsEyo99Yna2Mvir6nCkafm2Y2IVGvVbnDofnAA= =yvDo -----END PGP SIGNATURE----- Merge tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Tracing fixes for 5.15: - Fix defined but not use warning/error for osnoise function - Fix memory leak in event probe - Fix memblock leak in bootconfig - Fix the API of event probes to be like kprobes - Added test to check removal of event probe API - Fix recordmcount.pl for nds32 failed build * tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: nds32/ftrace: Fix Error: invalid operands (*UND* and *UND* sections) for `^' selftests/ftrace: Update test for more eprobe removal process tracing: Fix event probe removal from dynamic events tracing: Fix missing * in comment block bootconfig: init: Fix memblock leak in xbc_make_cmdline() tracing: Fix memory leak in eprobe_register() tracing: Fix missing osnoise tracer on max_latency |
||
Stefano Garzarella
|
ba95a6225b |
vsock_diag_test: remove free_sock_stat() call in test_no_sockets
In `test_no_sockets` we don't expect any sockets, indeed
check_no_sockets() prints an error and exits if `sockets` list is
not empty, so free_sock_stat() call is unnecessary since it would
only be called when the `sockets` list is empty.
This was discovered by a strange warning printed by gcc v11.2.1:
In file included from ../../include/linux/list.h:7,
from vsock_diag_test.c:18:
vsock_diag_test.c: In function ‘test_no_sockets’:
../../include/linux/kernel.h:35:45: error: array subscript ‘struct vsock_stat[0]’ is partly outside array bound
s of ‘struct list_head[1]’ [-Werror=array-bounds]
35 | const typeof(((type *)0)->member) * __mptr = (ptr); \
| ^~~~~~
../../include/linux/list.h:352:9: note: in expansion of macro ‘container_of’
352 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
../../include/linux/list.h:393:9: note: in expansion of macro ‘list_entry’
393 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
../../include/linux/list.h:522:21: note: in expansion of macro ‘list_next_entry’
522 | n = list_next_entry(pos, member); \
| ^~~~~~~~~~~~~~~
vsock_diag_test.c:325:9: note: in expansion of macro ‘list_for_each_entry_safe’
325 | list_for_each_entry_safe(st, next, sockets, list) {
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from vsock_diag_test.c:18:
vsock_diag_test.c:333:19: note: while referencing ‘sockets’
333 | LIST_HEAD(sockets);
| ^~~~~~~
../../include/linux/list.h:23:26: note: in definition of macro ‘LIST_HEAD’
23 | struct list_head name = LIST_HEAD_INIT(name)
It seems related to some compiler optimization and assumption
about the empty `sockets` list, since this warning is printed
only with -02 or -O3. Also removing `exit(1)` from
check_no_sockets() makes the warning disappear since in that
case free_sock_stat() can be reached also when the list is
not empty.
Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20211014152045.173872-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
Stephen Suryaputra
|
0857d6f8c7 |
ipv6: When forwarding count rx stats on the orig netdev
Commit |
||
Leonard Crestez
|
64e4017778 |
selftests: net/fcnal: Test --{force,no}-bind-key-ifindex
Test that applications binding listening sockets to VRFs without specifying TCP_MD5SIG_FLAG_IFINDEX will work as expected. This would be broken if __tcp_md5_do_lookup always made a strict comparison on l3index. See this email: https://lore.kernel.org/netdev/209548b5-27d2-2059-f2e9-2148f5a0291b@gmail.com/ Applications using tcp_l3mdev_accept=1 and a single global socket (not bound to any interface) also should have a way to specify keys that are only for the default VRF, this is done by --force-bind-key-ifindex without otherwise binding to a device. Signed-off-by: Leonard Crestez <cdleonard@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Leonard Crestez
|
78a9cf6143 |
selftests: nettest: Add --{force,no}-bind-key-ifindex
These options allow explicit control over the TCP_MD5SIG_FLAG_IFINDEX flag instead of always setting it based on binding to an interface. Do this by converting to getopt_long because nettest has too many single-character flags already and getopt_long is widely used in selftests. Signed-off-by: Leonard Crestez <cdleonard@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
ec681c53f8 |
Networking fixes for 5.15-rc6.
Current release - regressions:
- af_unix: rename UNIX-DGRAM to UNIX to maintain backwards compatibility
- procfs: revert "add seq_puts() statement for dev_mcast",
minor format change broke user space
Current release - new code bugs:
- dsa: fix bridge_num not getting cleared after ports leaving
the bridge, resource leak
- dsa: tag_dsa: send packets with TX fwd offload from VLAN-unaware
bridges using VID 0, prevent packet drops if pvid is removed
- dsa: mv88e6xxx: keep the pvid at 0 when VLAN-unaware, prevent
HW getting confused about station to VLAN mapping
Previous releases - regressions:
- virtio-net: fix for skb_over_panic inside big mode
- phy: do not shutdown PHYs in READY state
- dsa: mv88e6xxx: don't use PHY_DETECT on internal PHY's,
fix link LED staying lit after ifdown
- mptcp: fix possible infinite wait on recvmsg(MSG_WAITALL)
- mqprio: Correct stats in mqprio_dump_class_stats()
- ice: fix deadlock for Tx timestamp tracking flush
- stmmac: fix feature detection on old hardware
Previous releases - always broken:
- sctp: account stream padding length for reconf chunk
- icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe()
- isdn: cpai: check ctr->cnr to avoid array index out of bound
- isdn: mISDN: fix sleeping function called from invalid context
- nfc: nci: fix potential UAF of rf_conn_info object
- dsa: microchip: prevent ksz_mib_read_work from kicking back
in after it's canceled in .remove and crashing
- dsa: mv88e6xxx: isolate the ATU databases of standalone and
bridged ports
- dsa: sja1105, ocelot: break circular dependency between switch
and tag drivers
- dsa: felix: improve timestamping in presence of packe loss
- mlxsw: thermal: fix out-of-bounds memory accesses
Misc:
- ipv6: ioam: move the check for undefined bits to improve
interoperability
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Quite calm.
The noisy DSA driver (embedded switches) changes, and adjustment to
IPv6 IOAM behavior add to diffstat's bottom line but are not scary.
Current release - regressions:
- af_unix: rename UNIX-DGRAM to UNIX to maintain backwards
compatibility
- procfs: revert "add seq_puts() statement for dev_mcast", minor
format change broke user space
Current release - new code bugs:
- dsa: fix bridge_num not getting cleared after ports leaving the
bridge, resource leak
- dsa: tag_dsa: send packets with TX fwd offload from VLAN-unaware
bridges using VID 0, prevent packet drops if pvid is removed
- dsa: mv88e6xxx: keep the pvid at 0 when VLAN-unaware, prevent HW
getting confused about station to VLAN mapping
Previous releases - regressions:
- virtio-net: fix for skb_over_panic inside big mode
- phy: do not shutdown PHYs in READY state
- dsa: mv88e6xxx: don't use PHY_DETECT on internal PHY's, fix link
LED staying lit after ifdown
- mptcp: fix possible infinite wait on recvmsg(MSG_WAITALL)
- mqprio: Correct stats in mqprio_dump_class_stats()
- ice: fix deadlock for Tx timestamp tracking flush
- stmmac: fix feature detection on old hardware
Previous releases - always broken:
- sctp: account stream padding length for reconf chunk
- icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe()
- isdn: cpai: check ctr->cnr to avoid array index out of bound
- isdn: mISDN: fix sleeping function called from invalid context
- nfc: nci: fix potential UAF of rf_conn_info object
- dsa: microchip: prevent ksz_mib_read_work from kicking back in
after it's canceled in .remove and crashing
- dsa: mv88e6xxx: isolate the ATU databases of standalone and bridged
ports
- dsa: sja1105, ocelot: break circular dependency between switch and
tag drivers
- dsa: felix: improve timestamping in presence of packe loss
- mlxsw: thermal: fix out-of-bounds memory accesses
Misc:
- ipv6: ioam: move the check for undefined bits to improve
interoperability"
* tag 'net-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (60 commits)
icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe
MAINTAINERS: Update the devicetree documentation path of imx fec driver
sctp: account stream padding length for reconf chunk
mlxsw: thermal: Fix out-of-bounds memory accesses
ethernet: s2io: fix setting mac address during resume
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
nfc: fix error handling of nfc_proto_register()
Revert "net: procfs: add seq_puts() statement for dev_mcast"
net: encx24j600: check error in devm_regmap_init_encx24j600
net: korina: select CRC32
net: arc: select CRC32
net: dsa: felix: break at first CPU port during init and teardown
net: dsa: tag_ocelot_8021q: fix inability to inject STP BPDUs into BLOCKING ports
net: dsa: felix: purge skb from TX timestamping queue if it cannot be sent
net: dsa: tag_ocelot_8021q: break circular dependency with ocelot switch lib
net: dsa: tag_ocelot: break circular dependency with ocelot switch lib driver
net: mscc: ocelot: cross-check the sequence id from the timestamp FIFO with the skb PTP header
net: mscc: ocelot: deny TX timestamping of non-PTP packets
net: mscc: ocelot: warn when a PTP IRQ is raised for an unknown skb
...
|
||
|
Florian Westphal
|
3e6ed7703d |
selftests: netfilter: remove stray bash debug line
This should not be there.
Fixes:
|
||
Steven Rostedt (VMware)
|
0282b0f012 |
selftests/ftrace: Update test for more eprobe removal process
The removal of eprobes was broken and missed in testing. Add various ways to remove eprobes that are considered acceptable to the testing process to catch when/if they break again. Link: https://lkml.kernel.org/r/20211013205533.836644549@goodmis.org Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
Justin Iurman
|
7b1700e009 |
selftests: net: modify IOAM tests for undef bits
The output behavior for undefined bits is now directly tested inside the bash script. Trying to set an undefined bit should be refused. The input behavior for undefined bits has been removed due to the fact that we would need another sender allowed to set undefined bits. Signed-off-by: Justin Iurman <justin.iurman@uliege.be> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
fa58787605 |
linux-kselftest-kunit-fixes-5.15-rc6
This KUnit fixes update for Linux 5.15-rc6 consists of: - Fixes to address the structleak plugin causing the stack frame size to grow immensely when used with KUnit. Fixes include adding a new makefile to disable structleak and using it from KUnit iio, device property, thunderbolt, and bitfield tests to disable it. - KUnit framework reference count leak in kfree_at_end - KUnit tool fix to resolve conflict between --json and --raw_output and generate correct test output in either case. - kernel-doc warnings due to mismatched arg names -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmFkqr8ACgkQCwJExA0N QxyziBAAn+02Iq8Kd1p9/+ajr78iQKmjIpSHH51R6wPwOBJg0RgusyuheJ/pccl1 OOt7sAIdoBWlbZjkwi9SOoFabdvtAO6i7SWpw1R0AdWT5iG4ewe17ODIJiGQ6l9E 4fNayU+XFunXSqxxEsiSJYO5ztoyDDNOqWJ1a43r+9j6ApsHPH3aKwtx4hFutaJA TAUvSOJOMv93SWTHdQh1ihHMVBkhvdnnpSvsRzJFzkEmI5rmL+p7HcbuM0Zk/gyD 9obygEx8QsJ4pg1AJs8qAj1YbV599qbVhBYYr3EewWscyWME4RrIiXPGImcYKN3/ 99S5pOVTI+wp12r5c8WOdXta+Qe+1RvT9wvTPS+msGQakQhIq0eNePtO1AwIoIor S+36JbJdW1rOepg1WssL55F6+re//GYdluSUGwmwYCL3eUEIMpfRqeamg7BKQH3j gfukFJvLzzdLiyeYRg2f/G3Vxwa18shlIJgz+6ADCmemura3waeelTG0zFWiNsd5 XYXXhrxV8eq+Cj5ee/iBddKIgn2+QjFtDmZtsLtiZts3aV7zlugYm2bAYCN1Yxsu ZDvymnZUozoOCRFvBe60Eo4DSTDTnmAaRRnuX5L/x1ybpAUvwZQxzyNDIuvfZKQ9 JB8LrxAJDz7G4jj/9OY5IeacoXNKqDVZYK+Kb9L7hAS08ITk6vU= =08Ra -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-kunit-fixes-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kunit fixes from Shuah Khan: - Fixes to address the structleak plugin causing the stack frame size to grow immensely when used with KUnit. Fixes include adding a new makefile to disable structleak and using it from KUnit iio, device property, thunderbolt, and bitfield tests to disable it. - KUnit framework reference count leak in kfree_at_end - KUnit tool fix to resolve conflict between --json and --raw_output and generate correct test output in either case. - kernel-doc warnings due to mismatched arg names * tag 'linux-kselftest-kunit-fixes-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: fix kernel-doc warnings due to mismatched arg names bitfield: build kunit tests without structleak plugin thunderbolt: build kunit tests without structleak plugin device property: build kunit tests without structleak plugin iio/test-format: build kunit tests without structleak plugin gcc-plugins/structleak: add makefile var for disabling structleak kunit: fix reference count leak in kfree_at_end kunit: tool: better handling of quasi-bool args (--json, --raw_output) |
||
|
Florian Westphal
|
465f15a6d1 |
selftests: nft_nat: add udp hole punch test case
Add a test case that demonstrates port shadowing via UDP. ns2 sends packet to ns1, from source port used by a udp service on the router, ns0. Then, ns1 sends packet to ns0:service, but that ends up getting forwarded to ns2. Also add three test cases that demonstrate mitigations: 1. disable use of $port as source from 'unstrusted' origin 2. make the service untracked. This prevents masquerade entries from having any effects. 3. add forced PAT via 'random' mode to translate the "wrong" sport into an acceptable range. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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André Almeida
|
9d57f7c797 |
selftests: futex: Test sys_futex_waitv() wouldblock
Test if futex_waitv() returns -EWOULDBLOCK correctly when the expected value is different from the actual value for a waiter. Signed-off-by: André Almeida <andrealmeid@collabora.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210923171111.300673-22-andrealmeid@collabora.com |
||
|
André Almeida
|
02e56ccbae |
selftests: futex: Test sys_futex_waitv() timeout
Test if the futex_waitv timeout is working as expected, using the supported clockid options. Signed-off-by: André Almeida <andrealmeid@collabora.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210923171111.300673-21-andrealmeid@collabora.com |
||
|
André Almeida
|
5e59c1d1c7 |
selftests: futex: Add sys_futex_waitv() test
Create a new file to test the waitv mechanism. Test both private and shared futexes. Wake the last futex in the array, and check if the return value from futex_waitv() is the right index. Signed-off-by: André Almeida <andrealmeid@collabora.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210923171111.300673-20-andrealmeid@collabora.com |
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|
Mark Brown
|
0ba1ce1e86 |
selftests: arm64: Add coverage of ptrace flags for SVE VL inheritance
Add a test that covers enabling and disabling of SVE vector length inheritance via the ptrace interface. Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20211005123537.976795-1-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
Li Zhijian
|
1c36432b27 |
kselftests/sched: cleanup the child processes
Previously, 'make -C sched run_tests' will block forever when it occurs
something wrong where the *selftests framework* is waiting for its child
processes to exit.
[root@iaas-rpma sched]# ./cs_prctl_test
## Create a thread/process/process group hiearchy
Not a core sched system
tid=74985, / tgid=74985 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74986, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74988, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74989, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74990, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74987, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74991, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74992, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
tid=74993, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
(268) FAILED: get_cs_cookie(0) == 0
## Set a cookie on entire process group
-1 = prctl(62, 1, 0, 2, 0)
core_sched create failed -- PGID: Invalid argument
(cs_prctl_test.c:272) -
[root@iaas-rpma sched]# ps
PID TTY TIME CMD
4605 pts/2 00:00:00 bash
74986 pts/2 00:00:00 cs_prctl_test
74987 pts/2 00:00:00 cs_prctl_test
74999 pts/2 00:00:00 ps
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Chris Hyser <chris.hyser@oracle.com>
Link: https://lore.kernel.org/r/20210902024333.75983-1-lizhijian@cn.fujitsu.com
|
||
|
Linus Torvalds
|
f6274b06e3 |
linux-kselftest-fixes-5.15-rc5
This Kselftest fixes update for Linux 5.15-rc5 consists of a fix to implicit declaration warns in drivers/dma-buf test. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmFbaykACgkQCwJExA0N QxwXRhAAwGntF/dFNcKspMKTepdmKLFHr5Mopd1+OMbVLgjQAtXZs+wCoR0tm6RK EZf5D7y8IpGedFnbjWJ1t18XCRJtBW7HladC6otTmR0+1SEFdHR1n4H/pqrmSagV 5rYqwh1BgTb5Eb/9GPWKlZ0zagXGujR5UVdFPqCEMWpF6be9J989NdKGzpD4Qbkq eux3x5iaz5dsVf7iTGhzy+iSxKqIqSw5LCtSrE3PoTRbM5PS+K4I7ImafysnsYK9 kZ8zkmEzixziwoWUEJLRqFveS7cY/5l7Nd2kD9YH1WE2xBYxYQZFdj4HVWdlQePd 99UthTSfcyO6C2fplorlKkoNKuX1tlGCJyZbNjgQSHPYuVrLoau136yoSk5F+ZPg OUFsIs52d09e7vN70nh7UD9rRqihFRWwgI4EQt9nUP1mAmYm8y7bXKSFDF5hp3ay 4VbvYl50QEkllqU0sDcEuFAodGLz72T2PZNWP5DQxg5q70Hni/CWqFm+EizztRCi mv749twroD61b8Jziu8Mqhp5BqlO1tY8uu9z4GuRC4UIMhdARY2J4mD+8wm03JRO 4S28o+mH4StrrhyjngrCM9k8YYwa/n+XDrswiNJIpd/PmxVXD1KUP6z80sQE6Tcb o34yFVeABzdovryC/8VwDC9n3RDYIN6SM5XqOxvX5jckdtfwCbI= =t85S -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fixes from Shuah Khan: "A fix to implicit declaration warns in drivers/dma-buf test" * tag 'linux-kselftest-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: drivers/dma-buf: Fix implicit declaration warns |
||
Daniel Latypov
|
d8c23ead70 |
kunit: tool: better handling of quasi-bool args (--json, --raw_output)
Problem:
What does this do?
$ kunit.py run --json
Well, it runs all the tests and prints test results out as JSON.
And next is
$ kunit.py run my-test-suite --json
This runs just `my-test-suite` and prints results out as JSON.
But what about?
$ kunit.py run --json my-test-suite
This runs all the tests and stores the json results in a "my-test-suite"
file.
Why:
--json, and now --raw_output are actually string flags. They just have a
default value. --json in particular takes the name of an output file.
It was intended that you'd do
$ kunit.py run --json=my_output_file my-test-suite
if you ever wanted to specify the value.
Workaround:
It doesn't seem like there's a way to make
https://docs.python.org/3/library/argparse.html only accept arg values
after a '='.
I believe that `--json` should "just work" regardless of where it is.
So this patch automatically rewrites a bare `--json` to `--json=stdout`.
That makes the examples above work the same way.
Add a regression test that can catch this for --raw_output.
Fixes:
|
||
|
Linus Torvalds
|
b2626f1e32 |
Small x86 fixes.
-----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmFXQUoUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroMglgf/egh3zb9/+BUQWe0xWfhcINNzpsVk PJtiBmJc3nQLbZbTSLp63rouy1lNgR0s2DiMwP7G1u39OwW8W3LHMrBUSqF1F01+ gntb4GGiRTiTPJI64K4z6ytORd3tuRarHq8TUIa2zvki9ZW5Obgkm1i1RsNMOo+s AOA7whhpS8e/a5fBbtbS9bTZb30PKTZmbW4oMjvO9Sw4Eb76IauqPSEtRPSuCAc7 r7z62RTlm10Qk0JR3tW1iXMxTJHZk+tYPJ8pclUAWVX5bZqWa/9k8R0Z5i/miFiZ glW/y3R4+aUwIQV2v7V3Jx9MOKDhZxniMtnqZG/Hp9NVDtWIz37V/U37vw== =zQQ1 -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull more kvm fixes from Paolo Bonzini: "Small x86 fixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: selftests: Ensure all migrations are performed when test is affined KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm x86/kvmclock: Move this_cpu_pvti into kvmclock.h selftests: KVM: Don't clobber XMM register when read KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue |
||
|
Linus Torvalds
|
4de593fb96 |
Networking fixes for 5.15-rc4, including fixes from mac80211, netfilter
and bpf.
Current release - regressions:
- bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
interrupt
- mdio: revert mechanical patches which broke handling of optional
resources
- dev_addr_list: prevent address duplication
Previous releases - regressions:
- sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
(NULL deref)
- Revert "mac80211: do not use low data rates for data frames with no
ack flag", fixing broadcast transmissions
- mac80211: fix use-after-free in CCMP/GCMP RX
- netfilter: include zone id in tuple hash again, minimize collisions
- netfilter: nf_tables: unlink table before deleting it (race -> UAF)
- netfilter: log: work around missing softdep backend module
- mptcp: don't return sockets in foreign netns
- sched: flower: protect fl_walk() with rcu (race -> UAF)
- ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup
- smsc95xx: fix stalled rx after link change
- enetc: fix the incorrect clearing of IF_MODE bits
- ipv4: fix rtnexthop len when RTA_FLOW is present
- dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this SKU
- e100: fix length calculation & buffer overrun in ethtool::get_regs
Previous releases - always broken:
- mac80211: fix using stale frag_tail skb pointer in A-MSDU tx
- mac80211: drop frames from invalid MAC address in ad-hoc mode
- af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
(race -> UAF)
- bpf, x86: Fix bpf mapping of atomic fetch implementation
- bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog
- netfilter: ip6_tables: zero-initialize fragment offset
- mhi: fix error path in mhi_net_newlink
- af_unix: return errno instead of NULL in unix_create1() when
over the fs.file-max limit
Misc:
- bpf: exempt CAP_BPF from checks against bpf_jit_limit
- netfilter: conntrack: make max chain length random, prevent guessing
buckets by attackers
- netfilter: nf_nat_masquerade: make async masq_inet6_event handling
generic, defer conntrack walk to work queue (prevent hogging RTNL lock)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from mac80211, netfilter and bpf.
Current release - regressions:
- bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
interrupt
- mdio: revert mechanical patches which broke handling of optional
resources
- dev_addr_list: prevent address duplication
Previous releases - regressions:
- sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
(NULL deref)
- Revert "mac80211: do not use low data rates for data frames with no
ack flag", fixing broadcast transmissions
- mac80211: fix use-after-free in CCMP/GCMP RX
- netfilter: include zone id in tuple hash again, minimize collisions
- netfilter: nf_tables: unlink table before deleting it (race -> UAF)
- netfilter: log: work around missing softdep backend module
- mptcp: don't return sockets in foreign netns
- sched: flower: protect fl_walk() with rcu (race -> UAF)
- ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup
- smsc95xx: fix stalled rx after link change
- enetc: fix the incorrect clearing of IF_MODE bits
- ipv4: fix rtnexthop len when RTA_FLOW is present
- dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this
SKU
- e100: fix length calculation & buffer overrun in ethtool::get_regs
Previous releases - always broken:
- mac80211: fix using stale frag_tail skb pointer in A-MSDU tx
- mac80211: drop frames from invalid MAC address in ad-hoc mode
- af_unix: fix races in sk_peer_pid and sk_peer_cred accesses (race
-> UAF)
- bpf, x86: Fix bpf mapping of atomic fetch implementation
- bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog
- netfilter: ip6_tables: zero-initialize fragment offset
- mhi: fix error path in mhi_net_newlink
- af_unix: return errno instead of NULL in unix_create1() when over
the fs.file-max limit
Misc:
- bpf: exempt CAP_BPF from checks against bpf_jit_limit
- netfilter: conntrack: make max chain length random, prevent
guessing buckets by attackers
- netfilter: nf_nat_masquerade: make async masq_inet6_event handling
generic, defer conntrack walk to work queue (prevent hogging RTNL
lock)"
* tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
net: stmmac: fix EEE init issue when paired with EEE capable PHYs
net: dev_addr_list: handle first address in __hw_addr_add_ex
net: sched: flower: protect fl_walk() with rcu
net: introduce and use lock_sock_fast_nested()
net: phy: bcm7xxx: Fixed indirect MMD operations
net: hns3: disable firmware compatible features when uninstall PF
net: hns3: fix always enable rx vlan filter problem after selftest
net: hns3: PF enable promisc for VF when mac table is overflow
net: hns3: fix show wrong state when add existing uc mac address
net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE
net: hns3: don't rollback when destroy mqprio fail
net: hns3: remove tc enable checking
net: hns3: do not allow call hns3_nic_net_open repeatedly
ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
net: bridge: mcast: Associate the seqcount with its protecting lock.
net: mdio-ipq4019: Fix the error for an optional regs resource
net: hns3: fix hclge_dbg_dump_tm_pg() stack usage
net: mdio: mscc-miim: Fix the mdio controller
af_unix: Return errno instead of NULL in unix_create1().
...
|
||
Sean Christopherson
|
7b0035eaa7 |
KVM: selftests: Ensure all migrations are performed when test is affined
Rework the CPU selection in the migration worker to ensure the specified
number of migrations are performed when the test iteslf is affined to a
subset of CPUs. The existing logic skips iterations if the target CPU is
not in the original set of possible CPUs, which causes the test to fail
if too many iterations are skipped.
==== Test Assertion Failure ====
rseq_test.c:228: i > (NR_TASK_MIGRATIONS / 2)
pid=10127 tid=10127 errno=4 - Interrupted system call
1 0x00000000004018e5: main at rseq_test.c:227
2 0x00007fcc8fc66bf6: ?? ??:0
3 0x0000000000401959: _start at ??:?
Only performed 4 KVM_RUNs, task stalled too much?
Calculate the min/max possible CPUs as a cheap "best effort" to avoid
high runtimes when the test is affined to a small percentage of CPUs.
Alternatively, a list or xarray of the possible CPUs could be used, but
even in a horrendously inefficient setup, such optimizations are not
needed because the runtime is completely dominated by the cost of
migrating the task, and the absolute runtime is well under a minute in
even truly absurd setups, e.g. running on a subset of vCPUs in a VM that
is heavily overcommited (16 vCPUs per pCPU).
Fixes:
|
||
|
Mark Brown
|
8694e5e638 |
selftests: arm64: Verify that all possible vector lengths are handled
As part of the enumeration interface for setting vector lengths it is valid to set vector lengths not supported in the system, these will be rounded to a supported vector length and returned from the prctl(). Add a test which exercises this for every valid vector length and makes sure that the return value is as expected and that this is reflected in the actual system state. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com> Link: https://lore.kernel.org/r/20210929151925.9601-5-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
e42391150e |
selftests: arm64: Fix and enable test for setting current VL in vec-syscfg
We had some test code for verifying that we can write the current VL via the prctl() interface but the condition for the test was inverted which wasn't noticed as it was never actually hooked up to the array of tests we execute. Fix this. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210929151925.9601-4-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
4caf339c03 |
selftests: arm64: Remove bogus error check on writing to files
Due to some refactoring with the error handling we ended up mangling things so we never actually set ret and therefore shouldn't be checking it. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210929151925.9601-3-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
ff944c44b7 |
selftests: arm64: Fix printf() format mismatch in vec-syscfg
The format for this error message calls for the plain text version of the error but we weren't supply it. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210929151925.9601-2-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
34785030dc |
selftests: arm64: Move FPSIMD in SVE ptrace test into a function
Now that all the other tests are in functions rather than inline in the main parent process function also move the test for accessing the FPSIMD registers via the SVE regset out into their own function. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-9-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
a1d7111257 |
selftests: arm64: More comprehensively test the SVE ptrace interface
Currently the selftest for the SVE register set is not quite as thorough as is desirable - it only validates that the value of a single Z register is not modified by a partial write to a lower numbered Z register after having previously been set through the FPSIMD regset. Make this more thorough: - Test the ability to set vector lengths and enumerate those supported in the system. - Validate data in all Z and P registers, plus FPSR and FPCR. - Test reads via the FPSIMD regset after set via the SVE regset. There's still some oversights, the main one being that due to the need to generate a pattern in FFR and the fact that this rewrite is primarily motivated by SME's streaming SVE which doesn't have FFR we don't currently test FFR. Update the TODO to reflect those that occurred to me (and fix an adjacent typo in there). Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-8-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
9f7d03a2c5 |
selftests: arm64: Verify interoperation of SVE and FPSIMD register sets
After setting the FPSIMD registers via the SVE register set read them back via the FPSIMD register set, validating that the two register sets are interoperating and that the values we thought we set made it into the child process. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-7-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
8c9eece0bf |
selftests: arm64: Clarify output when verifying SVE register set
When verifying setting a Z register via ptrace we check each byte by hand, iterating over the buffer using a pointer called p and treating each register value written as a test. This creates output referring to "p[X]" which is confusing since SVE also has predicate registers Pn. Tweak the output to avoid confusion here. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-6-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
736e6d5a54 |
selftests: arm64: Document what the SVE ptrace test is doing
Before we go modifying it further let's add some comments and output clarifications explaining what this test is actually doing. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-5-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
eab281e3af |
selftests: arm64: Remove extraneous register setting code
For some reason the SVE ptrace test code starts off by setting values in some of the SVE vector registers in the parent process which it then never interacts with when verifying the ptrace interfaces. This is not especially relevant to what's being tested and somewhat confusing when reading the code so let's remove it. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-4-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Mark Brown
|
09121ad718 |
selftests: arm64: Don't log child creation as a test in SVE ptrace test
Currently we log the creation of the child process as a test but it's not really relevant to what we're trying to test and can make the output a little confusing so don't do that. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-3-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |