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9250 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
39b3f4e0db |
hardening updates for v6.12-rc1
- lib/string_choices: Add str_up_down() helper (Michal Wajdeczko)
- lib/string_choices: Add str_true_false()/str_false_true() helper
(Hongbo Li)
- lib/string_choices: Introduce several opposite string choice helpers
(Hongbo Li)
- lib/string_helpers: rework overflow-dependent code (Justin Stitt)
- fortify: refactor test_fortify Makefile to fix some build problems
(Masahiro Yamada)
- string: Check for "nonstring" attribute on strscpy() arguments
- virt: vbox: Replace 1-element arrays with flexible arrays
- media: venus: hfi_cmds: Replace 1-element arrays with flexible arrays
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Merge tag 'hardening-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- lib/string_choices:
- Add str_up_down() helper (Michal Wajdeczko)
- Add str_true_false()/str_false_true() helper (Hongbo Li)
- Introduce several opposite string choice helpers (Hongbo Li)
- lib/string_helpers:
- rework overflow-dependent code (Justin Stitt)
- fortify: refactor test_fortify Makefile to fix some build problems
(Masahiro Yamada)
- string: Check for "nonstring" attribute on strscpy() arguments
- virt: vbox: Replace 1-element arrays with flexible arrays
- media: venus: hfi_cmds: Replace 1-element arrays with flexible arrays
* tag 'hardening-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lib/string_choices: Add some comments to make more clear for string choices helpers.
lib/string_choices: Introduce several opposite string choice helpers
lib/string_choices: Add str_true_false()/str_false_true() helper
string: Check for "nonstring" attribute on strscpy() arguments
media: venus: hfi_cmds: struct hfi_session_release_buffer_pkt: Add __counted_by annotation
media: venus: hfi_cmds: struct hfi_session_release_buffer_pkt: Replace 1-element array with flexible array
virt: vbox: struct vmmdev_hgcm_pagelist: Replace 1-element array with flexible array
lib/string_helpers: rework overflow-dependent code
coccinelle: Add rules to find str_down_up() replacements
string_choices: Add wrapper for str_down_up()
coccinelle: Add rules to find str_up_down() replacements
lib/string_choices: Add str_up_down() helper
fortify: use if_changed_dep to record header dependency in *.cmd files
fortify: move test_fortify.sh to lib/test_fortify/
fortify: refactor test_fortify Makefile to fix some build problems
|
||
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Linus Torvalds
|
bdf56c7580 |
slab updates for 6.12
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Merge tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
"This time it's mostly refactoring and improving APIs for slab users in
the kernel, along with some debugging improvements.
- kmem_cache_create() refactoring (Christian Brauner)
Over the years have been growing new parameters to
kmem_cache_create() where most of them are needed only for a small
number of caches - most recently the rcu_freeptr_offset parameter.
To avoid adding new parameters to kmem_cache_create() and adjusting
all its callers, or creating new wrappers such as
kmem_cache_create_rcu(), we can now pass extra parameters using the
new struct kmem_cache_args. Not explicitly initialized fields
default to values interpreted as unused.
kmem_cache_create() is for now a wrapper that works both with the
new form: kmem_cache_create(name, object_size, args, flags) and the
legacy form: kmem_cache_create(name, object_size, align, flags,
ctor)
- kmem_cache_destroy() waits for kfree_rcu()'s in flight (Vlastimil
Babka, Uladislau Rezki)
Since SLOB removal, kfree() is allowed for freeing objects
allocated by kmem_cache_create(). By extension kfree_rcu() as
allowed as well, which can allow converting simple call_rcu()
callbacks that only do kmem_cache_free(), as there was never a
kmem_cache_free_rcu() variant. However, for caches that can be
destroyed e.g. on module removal, the cache owners knew to issue
rcu_barrier() first to wait for the pending call_rcu()'s, and this
is not sufficient for pending kfree_rcu()'s due to its internal
batching optimizations. Ulad has provided a new
kvfree_rcu_barrier() and to make the usage less error-prone,
kmem_cache_destroy() calls it. Additionally, destroying
SLAB_TYPESAFE_BY_RCU caches now again issues rcu_barrier()
synchronously instead of using an async work, because the past
motivation for async work no longer applies. Users of custom
call_rcu() callbacks should however keep calling rcu_barrier()
before cache destruction.
- Debugging use-after-free in SLAB_TYPESAFE_BY_RCU caches (Jann Horn)
Currently, KASAN cannot catch UAFs in such caches as it is legal to
access them within a grace period, and we only track the grace
period when trying to free the underlying slab page. The new
CONFIG_SLUB_RCU_DEBUG option changes the freeing of individual
object to be RCU-delayed, after which KASAN can poison them.
- Delayed memcg charging (Shakeel Butt)
In some cases, the memcg is uknown at allocation time, such as
receiving network packets in softirq context. With
kmem_cache_charge() these may be now charged later when the user
and its memcg is known.
- Misc fixes and improvements (Pedro Falcato, Axel Rasmussen,
Christoph Lameter, Yan Zhen, Peng Fan, Xavier)"
* tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (34 commits)
mm, slab: restore kerneldoc for kmem_cache_create()
io_uring: port to struct kmem_cache_args
slab: make __kmem_cache_create() static inline
slab: make kmem_cache_create_usercopy() static inline
slab: remove kmem_cache_create_rcu()
file: port to struct kmem_cache_args
slab: create kmem_cache_create() compatibility layer
slab: port KMEM_CACHE_USERCOPY() to struct kmem_cache_args
slab: port KMEM_CACHE() to struct kmem_cache_args
slab: remove rcu_freeptr_offset from struct kmem_cache
slab: pass struct kmem_cache_args to do_kmem_cache_create()
slab: pull kmem_cache_open() into do_kmem_cache_create()
slab: pass struct kmem_cache_args to create_cache()
slab: port kmem_cache_create_usercopy() to struct kmem_cache_args
slab: port kmem_cache_create_rcu() to struct kmem_cache_args
slab: port kmem_cache_create() to struct kmem_cache_args
slab: add struct kmem_cache_args
slab: s/__kmem_cache_create/do_kmem_cache_create/g
memcg: add charging of already allocated slab objects
mm/slab: Optimize the code logic in find_mergeable()
...
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Linus Torvalds
|
067610ebaa |
RCU pull request for v6.12
This pull request contains the following branches:
context_tracking.15.08.24a: Rename context tracking state related
symbols and remove references to "dynticks" in various context
tracking state variables and related helpers; force
context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section.
csd.lock.15.08.24a: Enhance CSD-lock diagnostic reports; add an API
to provide an indication of ongoing CSD-lock stall.
nocb.09.09.24a: Update and simplify RCU nocb code to handle
(de-)offloading of callbacks only for offline CPUs; fix RT
throttling hrtimer being armed from offline CPU.
rcutorture.14.08.24a: Remove redundant rcu_torture_ops get_gp_completed
fields; add SRCU ->same_gp_state and ->get_comp_state
functions; add generic test for NUM_ACTIVE_*RCU_POLL* for
testing RCU and SRCU polled grace periods; add CFcommon.arch
for arch-specific Kconfig options; print number of update types
in rcu_torture_write_types();
add rcutree.nohz_full_patience_delay testing to the TREE07
scenario; add a stall_cpu_repeat module parameter to test
repeated CPU stalls; add argument to limit number of CPUs a
guest OS can use in torture.sh;
rcustall.09.09.24a: Abbreviate RCU CPU stall warnings during CSD-lock
stalls; Allow dump_cpu_task() to be called without disabling
preemption; defer printing stall-warning backtrace when holding
rcu_node lock.
srcu.12.08.24a: Make SRCU gp seq wrap-around faster; add KCSAN checks
for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays; mark idle SRCU-barrier
callbacks to help identify stuck SRCU-barrier callback.
rcu.tasks.14.08.24a: Remove RCU Tasks Rude asynchronous APIs as they
are no longer used; stop testing RCU Tasks Rude asynchronous
APIs; fix access to non-existent percpu regions; check
processor-ID assumptions during chosen CPU calculation for
callback enqueuing; update description of rtp->tasks_gp_seq
grace-period sequence number; add rcu_barrier_cb_is_done()
to identify whether a given rcu_barrier callback is stuck;
mark idle Tasks-RCU-barrier callbacks; add
*torture_stats_print() functions to print detailed
diagnostics for Tasks-RCU variants; capture start time of
rcu_barrier_tasks*() operation to help distinguish a hung
barrier operation from a long series of barrier operations.
rcu_scaling_tests.15.08.24a:
refscale: Add a TINY scenario to support tests of Tiny RCU
and Tiny SRCU; Optimize process_durations() operation;
rcuscale: Dump stacks of stalled rcu_scale_writer() instances;
dump grace-period statistics when rcu_scale_writer() stalls;
mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks; print detailed grace-period and barrier diagnostics
on rcu_scale_writer() hangs for Tasks-RCU variants; warn if
async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude;
make all writer tasks report upon hang; tolerate repeated
GFP_KERNEL failure in rcu_scale_writer(); use special allocator
for rcu_scale_writer(); NULL out top-level pointers to heap
memory to avoid double-free bugs on modprobe failures; maintain
per-task instead of per-CPU callbacks count to avoid any issues
with migration of either tasks or callbacks; constify struct
ref_scale_ops.
fixes.12.08.24a: Use system_unbound_wq for kfree_rcu work to avoid
disturbing isolated CPUs.
misc.11.08.24a: Warn on unexpected rcu_state.srs_done_tail state;
Better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines; annotate struct
kvfree_rcu_bulk_data with __counted_by().
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Merge tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Context tracking:
- rename context tracking state related symbols and remove references
to "dynticks" in various context tracking state variables and
related helpers
- force context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section
CSD lock:
- enhance CSD-lock diagnostic reports
- add an API to provide an indication of ongoing CSD-lock stall
nocb:
- update and simplify RCU nocb code to handle (de-)offloading of
callbacks only for offline CPUs
- fix RT throttling hrtimer being armed from offline CPU
rcutorture:
- remove redundant rcu_torture_ops get_gp_completed fields
- add SRCU ->same_gp_state and ->get_comp_state functions
- add generic test for NUM_ACTIVE_*RCU_POLL* for testing RCU and SRCU
polled grace periods
- add CFcommon.arch for arch-specific Kconfig options
- print number of update types in rcu_torture_write_types()
- add rcutree.nohz_full_patience_delay testing to the TREE07 scenario
- add a stall_cpu_repeat module parameter to test repeated CPU stalls
- add argument to limit number of CPUs a guest OS can use in
torture.sh
rcustall:
- abbreviate RCU CPU stall warnings during CSD-lock stalls
- Allow dump_cpu_task() to be called without disabling preemption
- defer printing stall-warning backtrace when holding rcu_node lock
srcu:
- make SRCU gp seq wrap-around faster
- add KCSAN checks for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays
- mark idle SRCU-barrier callbacks to help identify stuck
SRCU-barrier callback
rcu tasks:
- remove RCU Tasks Rude asynchronous APIs as they are no longer used
- stop testing RCU Tasks Rude asynchronous APIs
- fix access to non-existent percpu regions
- check processor-ID assumptions during chosen CPU calculation for
callback enqueuing
- update description of rtp->tasks_gp_seq grace-period sequence
number
- add rcu_barrier_cb_is_done() to identify whether a given
rcu_barrier callback is stuck
- mark idle Tasks-RCU-barrier callbacks
- add *torture_stats_print() functions to print detailed diagnostics
for Tasks-RCU variants
- capture start time of rcu_barrier_tasks*() operation to help
distinguish a hung barrier operation from a long series of barrier
operations
refscale:
- add a TINY scenario to support tests of Tiny RCU and Tiny
SRCU
- optimize process_durations() operation
rcuscale:
- dump stacks of stalled rcu_scale_writer() instances and
grace-period statistics when rcu_scale_writer() stalls
- mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks
- print detailed grace-period and barrier diagnostics on
rcu_scale_writer() hangs for Tasks-RCU variants
- warn if async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude
- make all writer tasks report upon hang
- tolerate repeated GFP_KERNEL failure in rcu_scale_writer()
- use special allocator for rcu_scale_writer()
- NULL out top-level pointers to heap memory to avoid double-free
bugs on modprobe failures
- maintain per-task instead of per-CPU callbacks count to avoid any
issues with migration of either tasks or callbacks
- constify struct ref_scale_ops
Fixes:
- use system_unbound_wq for kfree_rcu work to avoid disturbing
isolated CPUs
Misc:
- warn on unexpected rcu_state.srs_done_tail state
- better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines
- annotate struct kvfree_rcu_bulk_data with __counted_by()"
* tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (90 commits)
rcu: Defer printing stall-warning backtrace when holding rcu_node lock
rcu/nocb: Remove superfluous memory barrier after bypass enqueue
rcu/nocb: Conditionally wake up rcuo if not already waiting on GP
rcu/nocb: Fix RT throttling hrtimer armed from offline CPU
rcu/nocb: Simplify (de-)offloading state machine
context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
rcu: Update stray documentation references to rcu_dynticks_eqs_{enter, exit}()
rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()
rcu: Rename struct rcu_data .exp_dynticks_snap into .exp_watching_snap
rcu: Rename struct rcu_data .dynticks_snap into .watching_snap
rcu: Rename rcu_dynticks_zero_in_eqs() into rcu_watching_zero_in_eqs()
rcu: Rename rcu_dynticks_in_eqs_since() into rcu_watching_snap_stopped_since()
rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs()
rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_online()
context_tracking, rcu: Rename rcu_dynticks_curr_cpu_in_eqs() into rcu_is_watching_curr_cpu()
context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()
refscale: Constify struct ref_scale_ops
...
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Linus Torvalds
|
78567e2bc7 |
cgroup: Changes for v6.12
- cpuset isolation improvements. - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg. - Handling of unavailable v1 controller handling improved during cgroup1 mount operations. - union_find applied to cpuset. It makes code simpler and more efficient. - Reduce spurious events in pids.events. - Cleanups and other misc changes. - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZuNU3Q4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGdMsAP9yqPxu//LiJ3lPWhKcVVKtdwrA3AYDLE81VSJO 5VZJhAD+Ic+Ly/jZjDtjjQpZ1U3JsBpBRcVBqzeH0gD7eXaJgwk= =h/+c -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cpuset isolation improvements - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg - Handling of unavailable v1 controller handling improved during cgroup1 mount operations - union_find applied to cpuset. It makes code simpler and more efficient - Reduce spurious events in pids.events - Cleanups and other misc changes - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon * tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (34 commits) cgroup: Do not report unavailable v1 controllers in /proc/cgroups cgroup: Disallow mounting v1 hierarchies without controller implementation cgroup/cpuset: Expose cpuset filesystem with cpuset v1 only cgroup/cpuset: Move cpu.h include to cpuset-internal.h cgroup/cpuset: add sefltest for cpuset v1 cgroup/cpuset: guard cpuset-v1 code under CONFIG_CPUSETS_V1 cgroup/cpuset: rename functions shared between v1 and v2 cgroup/cpuset: move v1 interfaces to cpuset-v1.c cgroup/cpuset: move validate_change_legacy to cpuset-v1.c cgroup/cpuset: move legacy hotplug update to cpuset-v1.c cgroup/cpuset: add callback_lock helper cgroup/cpuset: move memory_spread to cpuset-v1.c cgroup/cpuset: move relax_domain_level to cpuset-v1.c cgroup/cpuset: move memory_pressure to cpuset-v1.c cgroup/cpuset: move common code to cpuset-internal.h cgroup/cpuset: introduce cpuset-v1.c selftest/cgroup: Make test_cpuset_prs.sh deal with pre-isolated CPUs cgroup/cpuset: Account for boot time isolated CPUs cgroup/cpuset: remove use_parent_ecpus of cpuset cgroup/cpuset: remove fetch_xcpus ... |
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Linus Torvalds
|
194fcd20eb |
linux_kselftest-kunit-6.12-rc1
This kunit update for Linux 6.12-rc1 consists of:
-- a new int_pow test suite
-- documentation update to clarify filename best practices
-- kernel-doc fix for EXPORT_SYMBOL_IF_KUNIT
-- change to build compile_commands.json automatically instead
of requiring a manual build.
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Merge tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- a new int_pow test suite
- documentation update to clarify filename best practices
- kernel-doc fix for EXPORT_SYMBOL_IF_KUNIT
- change to build compile_commands.json automatically instead of
requiring a manual build
* tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
lib/math: Add int_pow test suite
kunit: tool: Build compile_commands.json
kunit: Fix kernel-doc for EXPORT_SYMBOL_IF_KUNIT
Documentation: KUnit: Update filename best practices
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Linus Torvalds
|
dea435d397 |
Enable UBSAN traps for x86, which provides better reporting through
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||
|
Linus Torvalds
|
5ba202a7c9 |
Updates for KCOV instrumentation on x86:
- Prevent spurious KCOV coverage in common_interrupt()
- Fixup the KCOV Makefile directive which got stale due to a source file
rename
- Exclude stack unwinding from KCOV as it creates large amounts of
uninteresting coverage
- Provide a self test to validate that KCOV coverage of the interrupt
handling code starts not before preempt count got updated.
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Merge tag 'x86-build-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Thomas Gleixner:
"Updates for KCOV instrumentation on x86:
- Prevent spurious KCOV coverage in common_interrupt()
- Fixup the KCOV Makefile directive which got stale due to a source
file rename
- Exclude stack unwinding from KCOV as it creates large amounts of
uninteresting coverage
- Provide a self test to validate that KCOV coverage of the interrupt
handling code starts not before preempt count got updated"
* tag 'x86-build-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Ignore stack unwinding in KCOV
module: Fix KCOV-ignored file name
kcov: Add interrupt handling self test
x86/entry: Remove unwanted instrumentation in common_interrupt()
|
||
|
Linus Torvalds
|
daa394f0f9 |
A set of updates for debugobjects:
- Use the threshold to check for the pool refill condition and not the
run time recorded all time low fill value, which is lower than the
threshold and therefore causes refills to be delayed.
- KCSAN annotation updates and simplification of the fill_pool() code.
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Merge tag 'core-debugobjects-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobjects updates from Thomas Gleixner:
- Use the threshold to check for the pool refill condition and not the
run time recorded all time low fill value, which is lower than the
threshold and therefore causes refills to be delayed.
- KCSAN annotation updates and simplification of the fill_pool() code.
* tag 'core-debugobjects-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Remove redundant checks in fill_pool()
debugobjects: Fix conditions in fill_pool()
debugobjects: Fix the compilation attributes of some global variables
|
||
|
Linus Torvalds
|
9ea925c806 |
Updates for timers and timekeeping:
- Core:
- Overhaul of posix-timers in preparation of removing the
workaround for periodic timers which have signal delivery
ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep
time since the large rewrite to a non-cascading wheel, but the
extra jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack
for real time tasks and enforce it at the core level instead of
having inconsistent individual checks in various timer setup
functions.
- The usual set of updates and enhancements all over the place.
- Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers
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Merge tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Core:
- Overhaul of posix-timers in preparation of removing the workaround
for periodic timers which have signal delivery ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep time
since the large rewrite to a non-cascading wheel, but the extra
jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack for
real time tasks and enforce it at the core level instead of having
inconsistent individual checks in various timer setup functions.
- The usual set of updates and enhancements all over the place.
Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers"
* tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
ntp: Make sure RTC is synchronized when time goes backwards
treewide: Fix wrong singular form of jiffies in comments
cpu: Use already existing usleep_range()
timers: Rename next_expiry_recalc() to be unique
platform/x86:intel/pmc: Fix comment for the pmc_core_acpi_pm_timer_suspend_resume function
clocksource/drivers/jcore: Use request_percpu_irq()
clocksource/drivers/cadence-ttc: Add missing clk_disable_unprepare in ttc_setup_clockevent
clocksource/drivers/asm9260: Add missing clk_disable_unprepare in asm9260_timer_init
clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init()
clocksource/drivers/ingenic: Use devm_clk_get_enabled() helpers
platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended
clocksource: acpi_pm: Add external callback for suspend/resume
clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped()
dt-bindings: timer: rockchip: Add rk3576 compatible
timers: Annotate possible non critical data race of next_expiry
timers: Remove historical extra jiffie for timeout in msleep()
hrtimer: Use and report correct timerslack values for realtime tasks
hrtimer: Annotate hrtimer_cpu_base_.*_expiry() for sparse.
timers: Add sparse annotation for timer_sync_wait_running().
signal: Replace BUG_ON()s
...
|
||
|
Linus Torvalds
|
cb69d86550 |
Updates for the interrupt subsystem:
- Core:
- Remove a global lock in the affinity setting code
The lock protects a cpumask for intermediate results and the lock
causes a bottleneck on simultaneous start of multiple virtual
machines. Replace the lock and the static cpumask with a per CPU
cpumask which is nicely serialized by raw spinlock held when
executing this code.
- Provide support for giving a suffix to interrupt domain names.
That's required to support devices with subfunctions so that the
domain names are distinct even if they originate from the same
device node.
- The usual set of cleanups and enhancements all over the place
- Drivers:
- Support for longarch AVEC interrupt chip
- Refurbishment of the Armada driver so it can be extended for new
variants.
- The usual set of cleanups and enhancements all over the place
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Merge tag 'irq-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Core:
- Remove a global lock in the affinity setting code
The lock protects a cpumask for intermediate results and the lock
causes a bottleneck on simultaneous start of multiple virtual
machines. Replace the lock and the static cpumask with a per CPU
cpumask which is nicely serialized by raw spinlock held when
executing this code.
- Provide support for giving a suffix to interrupt domain names.
That's required to support devices with subfunctions so that the
domain names are distinct even if they originate from the same
device node.
- The usual set of cleanups and enhancements all over the place
Drivers:
- Support for longarch AVEC interrupt chip
- Refurbishment of the Armada driver so it can be extended for new
variants.
- The usual set of cleanups and enhancements all over the place"
* tag 'irq-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (73 commits)
genirq: Use cpumask_intersects()
genirq/cpuhotplug: Use cpumask_intersects()
irqchip/apple-aic: Only access system registers on SoCs which provide them
irqchip/apple-aic: Add a new "Global fast IPIs only" feature level
irqchip/apple-aic: Skip unnecessary enabling of use_fast_ipi
dt-bindings: apple,aic: Document A7-A11 compatibles
irqdomain: Use IS_ERR_OR_NULL() in irq_domain_trim_hierarchy()
genirq/msi: Use kmemdup_array() instead of kmemdup()
genirq/proc: Change the return value for set affinity permission error
genirq/proc: Use irq_move_pending() in show_irq_affinity()
genirq/proc: Correctly set file permissions for affinity control files
genirq: Get rid of global lock in irq_do_set_affinity()
genirq: Fix typo in struct comment
irqchip/loongarch-avec: Add AVEC irqchip support
irqchip/loongson-pch-msi: Prepare get_pch_msi_handle() for AVECINTC
irqchip/loongson-eiointc: Rename CPUHP_AP_IRQ_LOONGARCH_STARTING
LoongArch: Architectural preparation for AVEC irqchip
LoongArch: Move irqchip function prototypes to irq-loongson.h
irqchip/loongson-pch-msi: Switch to MSI parent domains
softirq: Remove unused 'action' parameter from action callback
...
|
||
|
Linus Torvalds
|
35219bc5c7 |
vfs-6.12.netfs
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Merge tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull netfs updates from Christian Brauner:
"This contains the work to improve read/write performance for the new
netfs library.
The main performance enhancing changes are:
- Define a structure, struct folio_queue, and a new iterator type,
ITER_FOLIOQ, to hold a buffer as a replacement for ITER_XARRAY. See
that patch for questions about naming and form.
ITER_FOLIOQ is provided as a replacement for ITER_XARRAY. The
problem with an xarray is that accessing it requires the use of a
lock (typically the RCU read lock) - and this means that we can't
supply iterate_and_advance() with a step function that might sleep
(crypto for example) without having to drop the lock between pages.
ITER_FOLIOQ is the iterator for a chain of folio_queue structs,
where each folio_queue holds a small list of folios. A folio_queue
struct is a simpler structure than xarray and is not subject to
concurrent manipulation by the VM. folio_queue is used rather than
a bvec[] as it can form lists of indefinite size, adding to one end
and removing from the other on the fly.
- Provide a copy_folio_from_iter() wrapper.
- Make cifs RDMA support ITER_FOLIOQ.
- Use folio queues in the write-side helpers instead of xarrays.
- Add a function to reset the iterator in a subrequest.
- Simplify the write-side helpers to use sheaves to skip gaps rather
than trying to work out where gaps are.
- In afs, make the read subrequests asynchronous, putting them into
work items to allow the next patch to do progressive
unlocking/reading.
- Overhaul the read-side helpers to improve performance.
- Fix the caching of a partial block at the end of a file.
- Allow a store to be cancelled.
Then some changes for cifs to make it use folio queues instead of
xarrays for crypto bufferage:
- Use raw iteration functions rather than manually coding iteration
when hashing data.
- Switch to using folio_queue for crypto buffers.
- Remove the xarray bits.
Make some adjustments to the /proc/fs/netfs/stats file such that:
- All the netfs stats lines begin 'Netfs:' but change this to
something a bit more useful.
- Add a couple of stats counters to track the numbers of skips and
waits on the per-inode writeback serialisation lock to make it
easier to check for this as a source of performance loss.
Miscellaneous work:
- Ensure that the sb_writers lock is taken around
vfs_{set,remove}xattr() in the cachefiles code.
- Reduce the number of conditional branches in netfs_perform_write().
- Move the CIFS_INO_MODIFIED_ATTR flag to the netfs_inode struct and
remove cifs_post_modify().
- Move the max_len/max_nr_segs members from netfs_io_subrequest to
netfs_io_request as they're only needed for one subreq at a time.
- Add an 'unknown' source value for tracing purposes.
- Remove NETFS_COPY_TO_CACHE as it's no longer used.
- Set the request work function up front at allocation time.
- Use bh-disabling spinlocks for rreq->lock as cachefiles completion
may be run from block-filesystem DIO completion in softirq context.
- Remove fs/netfs/io.c"
* tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (25 commits)
docs: filesystems: corrected grammar of netfs page
cifs: Don't support ITER_XARRAY
cifs: Switch crypto buffer to use a folio_queue rather than an xarray
cifs: Use iterate_and_advance*() routines directly for hashing
netfs: Cancel dirty folios that have no storage destination
cachefiles, netfs: Fix write to partial block at EOF
netfs: Remove fs/netfs/io.c
netfs: Speed up buffered reading
afs: Make read subreqs async
netfs: Simplify the writeback code
netfs: Provide an iterator-reset function
netfs: Use new folio_queue data type and iterator instead of xarray iter
cifs: Provide the capability to extract from ITER_FOLIOQ to RDMA SGEs
iov_iter: Provide copy_folio_from_iter()
mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios
netfs: Use bh-disabling spinlocks for rreq->lock
netfs: Set the request work function upon allocation
netfs: Remove NETFS_COPY_TO_CACHE
netfs: Reserve netfs_sreq_source 0 as unset/unknown
netfs: Move max_len/max_nr_segs from netfs_io_subrequest to netfs_io_stream
...
|
||
|
Linus Torvalds
|
85ffc6e4ed |
This update includes the following changes:
API:
- Make self-test asynchronous.
Algorithms:
- Remove MPI functions added for SM3.
- Add allocation error checks to remaining MPI functions (introduced for SM3).
- Set default Jitter RNG OSR to 3.
Drivers:
- Add hwrng driver for Rockchip RK3568 SoC.
- Allow disabling SR-IOV VFs through sysfs in qat.
- Fix device reset bugs in hisilicon.
- Fix authenc key parsing by using generic helper in octeontx*.
Others:
- Fix xor benchmarking on parisc.
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Merge tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu"
"API:
- Make self-test asynchronous
Algorithms:
- Remove MPI functions added for SM3
- Add allocation error checks to remaining MPI functions (introduced
for SM3)
- Set default Jitter RNG OSR to 3
Drivers:
- Add hwrng driver for Rockchip RK3568 SoC
- Allow disabling SR-IOV VFs through sysfs in qat
- Fix device reset bugs in hisilicon
- Fix authenc key parsing by using generic helper in octeontx*
Others:
- Fix xor benchmarking on parisc"
* tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (96 commits)
crypto: n2 - Set err to EINVAL if snprintf fails for hmac
crypto: camm/qi - Use ERR_CAST() to return error-valued pointer
crypto: mips/crc32 - Clean up useless assignment operations
crypto: qcom-rng - rename *_of_data to *_match_data
crypto: qcom-rng - fix support for ACPI-based systems
dt-bindings: crypto: qcom,prng: document support for SA8255p
crypto: aegis128 - Fix indentation issue in crypto_aegis128_process_crypt()
crypto: octeontx* - Select CRYPTO_AUTHENC
crypto: testmgr - Hide ENOENT errors
crypto: qat - Remove trailing space after \n newline
crypto: hisilicon/sec - Remove trailing space after \n newline
crypto: algboss - Pass instance creation error up
crypto: api - Fix generic algorithm self-test races
crypto: hisilicon/qm - inject error before stopping queue
crypto: hisilicon/hpre - mask cluster timeout error
crypto: hisilicon/qm - reset device before enabling it
crypto: hisilicon/trng - modifying the order of header files
crypto: hisilicon - add a lock for the qp send operation
crypto: hisilicon - fix missed error branch
crypto: ccp - do not request interrupt on cmd completion when irqs disabled
...
|
||
Luis Felipe Hernandez
|
7fcc9b5321 |
lib/math: Add int_pow test suite
Adds test suite for integer based power function which performs integer exponentiation. The test suite is designed to verify that the implementation of int_pow correctly computes the power of a given base raised to a given exponent. The tests check various scenarios and edge cases to ensure the accuracy and reliability of the exponentiation function. Updated commit with test information at commit time: Shuah Khan Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
David Howells
|
db0aa2e956
|
mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios
Define a data structure, struct folio_queue, to represent a sequence of
folios and a kernel-internal I/O iterator type, ITER_FOLIOQ, to allow a
list of folio_queue structures to be used to provide a buffer to
iov_iter-taking functions, such as sendmsg and recvmsg.
The folio_queue structure looks like:
struct folio_queue {
struct folio_batch vec;
u8 orders[PAGEVEC_SIZE];
struct folio_queue *next;
struct folio_queue *prev;
unsigned long marks;
unsigned long marks2;
};
It does not use a list_head so that next and/or prev can be set to NULL at
the ends of the list, allowing iov_iter-handling routines to determine that
they *are* the ends without needing to store a head pointer in the iov_iter
struct.
A folio_batch struct is used to hold the folio pointers which allows the
batch to be passed to batch handling functions. Two mark bits are
available per slot. The intention is to use at least one of them to mark
folios that need putting, but that might not be ultimately necessary.
Accessor functions are used to access the slots to do the masking and an
additional accessor function is used to indicate the size of the array.
The order of each folio is also stored in the structure to avoid the need
for iov_iter_advance() and iov_iter_revert() to have to query each folio to
find its size.
With careful barriering, this can be used as an extending buffer with new
folios inserted and new folio_queue structs added without the need for a
lock. Further, provided we always keep at least one struct in the buffer,
we can also remove consumed folios and consumed structs from the head end
as we without the need for locks.
[Questions/thoughts]
(1) To manage this, I need a head pointer, a tail pointer, a tail slot
number (assuming insertion happens at the tail end and the next
pointers point from head to tail). Should I put these into a struct
of their own, say "folio_queue_head" or "rolling_buffer"?
I will end up with two of these in netfs_io_request eventually, one
keeping track of the pagecache I'm dealing with for buffered I/O and
the other to hold a bounce buffer when we need one.
(2) Should I make the slots {folio,off,len} or bio_vec?
(3) This is intended to replace ITER_XARRAY eventually. Using an xarray
in I/O iteration requires the taking of the RCU read lock, doing
copying under the RCU read lock, walking the xarray (which may change
under us), handling retries and dealing with special values.
The advantage of ITER_XARRAY is that when we're dealing with the
pagecache directly, we don't need any allocation - but if we're doing
encrypted comms, there's a good chance we'd be using a bounce buffer
anyway.
This will require afs, erofs, cifs, orangefs and fscache to be
converted to not use this. afs still uses it for dirs and symlinks;
some of erofs usages should be easy to change, but there's one which
won't be so easy; ceph's use via fscache can be fixed by porting ceph
to netfslib; cifs is using xarray as a bounce buffer - that can be
moved to use sheaves instead; and orangefs has a similar problem to
erofs - maybe orangefs could use netfslib?
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Matthew Wilcox <willy@infradead.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: Steve French <sfrench@samba.org>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: Gao Xiang <xiang@kernel.org>
cc: Mike Marshall <hubcap@omnibond.com>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: linux-erofs@lists.ozlabs.org
cc: devel@lists.orangefs.org
Link: https://lore.kernel.org/r/20240814203850.2240469-13-dhowells@redhat.com/ # v2
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
Thomas Gleixner
|
2f7eedca6c |
Merge branch 'linus' into timers/core
To update with the latest fixes. |
||
Zhen Lei
|
63a4a9b52c |
debugobjects: Remove redundant checks in fill_pool()
fill_pool() checks locklessly at the beginning whether the pool has to be
refilled. After that it checks locklessly in a loop whether the free list
contains objects and repeats the refill check.
If both conditions are true, it acquires the pool lock and tries to move
objects from the free list to the pool repeating the same checks again.
There are two redundant issues with that:
1) The repeated check for the fill condition
2) The loop processing
The repeated check is pointless as it was just established that fill is
required. The condition has to be re-evaluated under the lock anyway.
The loop processing is not required either because there is practically
zero chance that a repeated attempt will succeed if the checks under the
lock terminate the moving of objects.
Remove the redundant check and replace the loop with a simple if condition.
[ tglx: Massaged change log ]
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240904133944.2124-4-thunder.leizhen@huawei.com
|
||
|
Zhen Lei
|
684d28feb8 |
debugobjects: Fix conditions in fill_pool()
fill_pool() uses 'obj_pool_min_free' to decide whether objects should be handed back to the kmem cache. But 'obj_pool_min_free' records the lowest historical value of the number of objects in the object pool and not the minimum number of objects which should be kept in the pool. Use 'debug_objects_pool_min_level' instead, which holds the minimum number which was scaled to the number of CPUs at boot time. [ tglx: Massage change log ] Fixes: |
||
|
Zhen Lei
|
e4757c710b |
debugobjects: Fix the compilation attributes of some global variables
1. Both debug_objects_pool_min_level and debug_objects_pool_size are read-only after initialization, change attribute '__read_mostly' to '__ro_after_init', and remove '__data_racy'. 2. Many global variables are read in the debug_stats_show() function, but didn't mask KCSAN's detection. Add '__data_racy' for them. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240904133944.2124-2-thunder.leizhen@huawei.com |
||
Anna-Maria Behnsen
|
bd7c8ff9fe |
treewide: Fix wrong singular form of jiffies in comments
There are several comments all over the place, which uses a wrong singular form of jiffies. Replace 'jiffie' by 'jiffy'. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Link: https://lore.kernel.org/all/20240904-devel-anna-maria-b4-timers-flseep-v1-3-e98760256370@linutronix.de |
||
Jakub Kicinski
|
502cc061de |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/phy/phy_device.c |
||
|
Linus Torvalds
|
120434e5b3 |
linux_kselftest-kunit-fixes-6.11-rc7
This kunit update for Linux 6.11-rc7 consist of one single fix to a use-after-free bug resulting from kunit_driver_create() failing to copy the driver name leaving it on the stack or freeing it. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmbY0WMACgkQCwJExA0N QxzCgBAA7Cb6tyvGcXsQTXC50S90CR+3bGmHzTL8jl/ElHvTz521UzPTn01QB51t JcGNhKz3RByvRBuukhg7abpCnCYWZoa9pmxojVD5D1TO2AXvypWEv0ao/UwSAYyi 2b7BTkcc7ciRske51/yFfipjwI/NLLIlu4HVcZ0OisOt+tvHzoz50KiyYV+Qan8r e8NkqVI587KLfDAZRC+cLXyJCIRwlCK+jNMrjoiOanv1Ybe65eAGNQmAIyuGX1Fo Ku8ZgoCgpc+Vjc1bMWgwgHWCdFOvINdd7ibfCp59JBBAkqYFpHYS5Lk9kHWH6lYF X9THLaCSh5cq+u0qksW8p4ml1fYnWZbm92qkdPj0wG36v9la769HSXijtVhL2lxD b1ca/NpfNfbbr5mxoVRq4ulO1JvyC6jmRKSJWt1p1SFfHf+Oaowh2Sr2ZjFfOozj +/Joh3n2dxlnH/in8BvXGwQIo7xbyTatm/4IVCccJAolR+hPv7izBeWfYn3xgtu5 5WZVcxPMxNwgNHWnxm2nbxTtBTvTsOSC8/nbxm8g3jM9cHCP7Mz3/zSV6p2vcRxm HPx/Qj2LmNcPKGXs4jh7WLErgkunxlvsqCJChwGjZoYR0fgRmzCgrwbkDE6/26UW Teo51bWwD/CxTy7OtXi8D2pPzVqt8u5cFPaNgHaRzxLDuVTouhU= =JRC5 -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-fixes-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit fix fromShuah Khan: "One single fix to a use-after-free bug resulting from kunit_driver_create() failing to copy the driver name leaving it on the stack or freeing it" * tag 'linux_kselftest-kunit-fixes-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Device wrappers should also manage driver name |
||
Alexander Lobakin
|
00d066a4d4 |
netdev_features: convert NETIF_F_LLTX to dev->lltx
NETIF_F_LLTX can't be changed via Ethtool and is not a feature, rather an attribute, very similar to IFF_NO_QUEUE (and hot). Free one netdev_features_t bit and make it a "hot" private flag. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
Suren Baghdasaryan
|
052a45c1cb |
alloc_tag: fix allocation tag reporting when CONFIG_MODULES=n
codetag_module_init() is used to initialize sections containing allocation
tags. This function is used to initialize module sections as well as core
kernel sections, in which case the module parameter is set to NULL. This
function has to be called even when CONFIG_MODULES=n to initialize core
kernel allocation tag sections. When CONFIG_MODULES=n, this function is a
NOP, which is wrong. This leads to /proc/allocinfo reported as empty.
Fix this by making it independent of CONFIG_MODULES.
Link: https://lkml.kernel.org/r/20240828231536.1770519-1-surenb@google.com
Fixes:
|
||
Liam R. Howlett
|
f806de88d8 |
maple_tree: remove rcu_read_lock() from mt_validate()
The write lock should be held when validating the tree to avoid updates
racing with checks. Holding the rcu read lock during a large tree
validation may also cause a prolonged rcu read window and "rcu_preempt
detected stalls" warnings.
Link: https://lore.kernel.org/all/0000000000001d12d4062005aea1@google.com/
Link: https://lkml.kernel.org/r/20240820175417.2782532-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Linus Torvalds
|
d5d547aa7b |
Random number generator fixes for Linux 6.11-rc6.
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEq5lC5tSkz8NBJiCnSfxwEqXeA64FAmbPwucACgkQSfxwEqXe A653nRAA0pk0iDH9iz/DLXVy5e4WWE1WQyCdT4jB5H2SItG3fz4kcKz0x1qcPEtA RUhO4bZLTeFE/QkAQROA41x0ysAbg2dnIefO6CzFhndKGDyOEfUKYAsb65HiYj8Z HI9XGRYWc8kD35BGDtqGrgbgDgSVS3JPASC8mPJKv608h9f1M1ABqtyuft8bxz57 2OxuXoxVVN4ZI0VyQqqhT1roEiCIuuDaSZlPUws2PjnLxcqIQXXXPMLgN2vi9QzG cCslhtJMxBAhQ/skAVbxQlI6S2OB0zGROE78k2PK7eqGZuBAex9G0kuWH9Rl3RQL NmYjITWPZts7LRxCcvUQzxcKYsGb08mvCMCu+AAS9QfI1rOQu/TS7+4IfRHnHyg0 J7OBN0aPqKfciAch5NCfxN5EMUAlwXdro2/salONdGNF7do9mdjt/LqUzhbSKBPi kpVWBkLHzl0obPR1F/BBfC2oRW7Us5ShjaLod9J1DcJps/GTr7MXir8lEnPxwypJ 5t4F8Y4M34MpxmVZ/k2oNsEGhugpicaTAqa5KO4vqtWDPk1TNHi2POxU1Fjnth5K ds/NxoRvXV/2K5V+XiJQnngt5pgRjqU5DgCh19Bq1W7PqqbGkVWmzIa+zfYm9sCH +RuZiyjM16RyN/tDAxhfKowBqsagW6/DM7LJe3fWJO7yCem/S5g= =a3c1 -----END PGP SIGNATURE----- Merge tag 'random-6.11-rc6-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random Pull random number generator fix from Jason Donenfeld: "Reject invalid flags passed to vgetrandom() in the same way that getrandom() does, so that the behavior is the same, from Yann. The flags argument to getrandom() only has a behavioral effect on the function if the RNG isn't initialized yet, so vgetrandom() falls back to the syscall in that case. But if the RNG is initialized, all of the flags behave the same way, so vgetrandom() didn't bother checking them, and just ignored them entirely. But that doesn't account for invalid flags passed in, which need to be rejected so we can use them later" * tag 'random-6.11-rc6-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: random: vDSO: reject unknown getrandom() flags |
||
Vlastimil Babka
|
4e1c44b3db |
kunit, slub: add test_kfree_rcu() and test_leak_destroy()
Add a test that will create cache, allocate one object, kfree_rcu() it and attempt to destroy it. As long as the usage of kvfree_rcu_barrier() in kmem_cache_destroy() works correctly, there should be no warnings in dmesg and the test should pass. Additionally add a test_leak_destroy() test that leaks an object on purpose and verifies that kmem_cache_destroy() catches it. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
David Gow
|
f2c6dbd220 |
kunit: Device wrappers should also manage driver name
kunit_driver_create() accepts a name for the driver, but does not copy
it, so if that name is either on the stack, or otherwise freed, we end
up with a use-after-free when the driver is cleaned up.
Instead, strdup() the name, and manage it as another KUnit allocation.
As there was no existing kunit_kstrdup(), we add one. Further, add a
kunit_ variant of strdup_const() and kfree_const(), so we don't need to
allocate and manage the string in the majority of cases where it's a
constant.
However, these are inline functions, and is_kernel_rodata() only works
for built-in code. This causes problems in two cases:
- If kunit is built as a module, __{start,end}_rodata is not defined.
- If a kunit test using these functions is built as a module, it will
suffer the same fate.
This fixes a KASAN splat with overflow.overflow_allocation_test, when
built as a module.
Restrict the is_kernel_rodata() case to when KUnit is built as a module,
which fixes the first case, at the cost of losing the optimisation.
Also, make kunit_{kstrdup,kfree}_const non-inline, so that other modules
using them will not accidentally depend on is_kernel_rodata(). If KUnit
is built-in, they'll benefit from the optimisation, if KUnit is not,
they won't, but the string will be properly duplicated.
Fixes:
|
||
Yann Droneaud
|
28f5df210d |
random: vDSO: reject unknown getrandom() flags
Like the getrandom() syscall, vDSO getrandom() must also reject unknown
flags. [1]
It would be possible to return -EINVAL from vDSO itself, but in the
possible case that a new flag is added to getrandom() syscall in the
future, it would be easier to get the behavior from the syscall, instead
of erroring until the vDSO is extended to support the new flag or
explicitly falling back.
[1] Designing the API: Planning for Extension
https://docs.kernel.org/process/adding-syscalls.html#designing-the-api-planning-for-extension
Signed-off-by: Yann Droneaud <yann@droneaud.fr>
[Jason: reworded commit message]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
||
Caleb Sander Mateos
|
e68ac2b488 |
softirq: Remove unused 'action' parameter from action callback
When soft interrupt actions are called, they are passed a pointer to the struct softirq action which contains the action's function pointer. This pointer isn't useful, as the action callback already knows what function it is. And since each callback handles a specific soft interrupt, the callback also knows which soft interrupt number is running. No soft interrupt action callback actually uses this parameter, so remove it from the function pointer signature. This clarifies that soft interrupt actions are global routines and makes it slightly cheaper to call them. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/all/20240815171549.3260003-1-csander@purestorage.com |
||
|
Linus Torvalds
|
b718175853 |
bcachefs fixes for 6.11-rc4
- New on disk format version, bcachefs_metadata_version_disk_accounting_inum This adds one more disk accounting counter, which counts disk usage and number of extents per inode number. This lets us track fragmentation, for implementing defragmentation later, and it also counts disk usage per inode in all snapshots, which will be a useful thing to expose to users. - One performance issue we've observed is threads spinning when they should be waiting for dirty keys in the key cache to be flushed by journal reclaim, so we now have hysteresis for the waiting thread, as well as improving the tracepoint and a new time_stat, for tracking time blocked waiting on key cache flushing. And, various assorted smaller fixes. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAma/9QkACgkQE6szbY3K bnYcBw/+LBSZ415gWSjPktdecf5rc6K4KxETxAxV0f0KesYzxqAtQzN0SCDvKt65 3aALU03wM8vWITiLS38/ckT+j6S2BpXcOxdu/OC0nRYQEUg9ZLvqEG5lQ3a/LliV Q64N33qsSr6QaKszFllLYcN4tGduKg8HoMlHn6+vJ7HNPjdfv0HHERSUsc7K84/w jkRtDE2NxsRJZKMEvIFp8hd5KXUR5zyBz/kc4P0WliLXpSyJLITzhKw1JV7ikKVD 0mO2bJ/0i7wPIabAD2HJahvbC7fl+2fkYFxUJ2XnvMTgU/+QyeGHEufbcbVrVSp0 BpzBTmSMFbGXBkbQBruFX5rJetzXeBqdYf0Yfavd4KDhGvYlSfDZQUapXT1QKC2q aHSB/s+2r7Crr/MBJyjbeFgXFTNGvI5yerlbdp2yj1kxjYJHHaKrp6h7n6XXk21W /mGF5tkIMkFTv98rQnIaky4neJzOPsLTTgxeR8zEudCgMaVUqEcaMdIFvARDjY/3 n52VR0zl3olV3vu7LgHaHfgH6lfaMV0sHPaGNYGL0YL+bCJD+lYM8a6l9aaks8vk md7+mFcOS4FUdDdS8MEKIN/k/gkEOC/EpmI864i9rIl0SiNXNy7FPTDKON8b+Ury 5omBMUQMEe9Q/pgKGXfpJWFynhSPEVf4y1DIOsrXk/jeBqenFyo= =BPGT -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs Pull bcachefs fixes from Kent OverstreetL - New on disk format version, bcachefs_metadata_version_disk_accounting_inum This adds one more disk accounting counter, which counts disk usage and number of extents per inode number. This lets us track fragmentation, for implementing defragmentation later, and it also counts disk usage per inode in all snapshots, which will be a useful thing to expose to users. - One performance issue we've observed is threads spinning when they should be waiting for dirty keys in the key cache to be flushed by journal reclaim, so we now have hysteresis for the waiting thread, as well as improving the tracepoint and a new time_stat, for tracking time blocked waiting on key cache flushing. ... and various assorted smaller fixes. * tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs: bcachefs: Fix locking in __bch2_trans_mark_dev_sb() bcachefs: fix incorrect i_state usage bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru bcachefs: Fix forgetting to pass trans to fsck_err() bcachefs: Increase size of cuckoo hash table on too many rehashes bcachefs: bcachefs_metadata_version_disk_accounting_inum bcachefs: Kill __bch2_accounting_mem_mod() bcachefs: Make bkey_fsck_err() a wrapper around fsck_err() bcachefs: Fix warning in __bch2_fsck_err() for trans not passed in bcachefs: Add a time_stat for blocked on key cache flush bcachefs: Improve trans_blocked_journal_reclaim tracepoint bcachefs: Add hysteresis to waiting on btree key cache flush lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() bcachefs: Convert for_each_btree_node() to lockrestart_do() bcachefs: Add missing downgrade table entry bcachefs: disk accounting: ignore unknown types bcachefs: bch2_accounting_invalid() fixup bcachefs: Fix bch2_trigger_alloc when upgrading from old versions bcachefs: delete faulty fastpath in bch2_btree_path_traverse_cached() |
||
Herbert Xu
|
8e3a67f2de |
crypto: lib/mpi - Add error checks to extension
The remaining functions added by commit |
||
|
Herbert Xu
|
fca5cb4dd2 |
Revert "lib/mpi: Extend the MPI library"
This partially reverts commit
|
||
Justin Stitt
|
bbf3c7ff9d |
lib/string_helpers: rework overflow-dependent code
When @size is 0, the desired behavior is to allow unlimited bytes to be parsed. Currently, this relies on some intentional arithmetic overflow where --size gives us SIZE_MAX when size is 0. Explicitly spell out the desired behavior without relying on intentional overflow/underflow. Signed-off-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20240808-b4-string_helpers_caa133-v1-1-686a455167c4@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
Masahiro Yamada
|
9c6b7fbbd7 |
fortify: use if_changed_dep to record header dependency in *.cmd files
After building with CONFIG_FORTIFY_SOURCE=y, many .*.d files are left
in lib/test_fortify/ because the compiler outputs header dependencies
into *.d without fixdep being invoked.
When compiling C files, if_changed_dep should be used so that the
auto-generated header dependencies are recorded in .*.cmd files.
Currently, if_changed is incorrectly used, and only two headers are
hard-coded in lib/Makefile.
In the previous patch version, the kbuild test robot detected new errors
on GCC 7.
GCC 7 or older does not produce test.d with the following test code:
$ echo 'void b(void) __attribute__((__error__(""))); void a(void) { b(); }' |
gcc -Wp,-MMD,test.d -c -o /dev/null -x c -
Perhaps, this was a bug that existed in older GCC versions.
Skip the tests for GCC<=7 for now, as this will be eventually solved
when we bump the minimal supported GCC version.
Link: https://lore.kernel.org/oe-kbuild-all/CAK7LNARmJcyyzL-jVJfBPi3W684LTDmuhMf1koF0TXoCpKTmcw@mail.gmail.com/T/#m13771bf78ae21adff22efc4d310c973fb4bcaf67
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20240727150302.1823750-4-masahiroy@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
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Masahiro Yamada
|
5a8d0c46c9 |
fortify: move test_fortify.sh to lib/test_fortify/
This script is only used in lib/test_fortify/. There is no reason to keep it in scripts/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20240727150302.1823750-3-masahiroy@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Masahiro Yamada
|
4e9903b086 |
fortify: refactor test_fortify Makefile to fix some build problems
There are some issues in the test_fortify Makefile code.
Problem 1: cc-disable-warning invokes compiler dozens of times
To see how many times the cc-disable-warning is evaluated, change
this code:
$(call cc-disable-warning,fortify-source)
to:
$(call cc-disable-warning,$(shell touch /tmp/fortify-$$$$)fortify-source)
Then, build the kernel with CONFIG_FORTIFY_SOURCE=y. You will see a
large number of '/tmp/fortify-<PID>' files created:
$ ls -1 /tmp/fortify-* | wc
80 80 1600
This means the compiler was invoked 80 times just for checking the
-Wno-fortify-source flag support.
$(call cc-disable-warning,fortify-source) should be added to a simple
variable instead of a recursive variable.
Problem 2: do not recompile string.o when the test code is updated
The test cases are independent of the kernel. However, when the test
code is updated, $(obj)/string.o is rebuilt and vmlinux is relinked
due to this dependency:
$(obj)/string.o: $(obj)/$(TEST_FORTIFY_LOG)
always-y is suitable for building the log files.
Problem 3: redundant code
clean-files += $(addsuffix .o, $(TEST_FORTIFY_LOGS))
... is unneeded because the top Makefile globally cleans *.o files.
This commit fixes these issues and makes the code readable.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20240727150302.1823750-2-masahiroy@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
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Ivan Orlov
|
92e9bac181 |
kunit/overflow: Fix UB in overflow_allocation_test
The 'device_name' array doesn't exist out of the 'overflow_allocation_test' function scope. However, it is being used as a driver name when calling 'kunit_driver_create' from 'kunit_device_register'. It produces the kernel panic with KASAN enabled. Since this variable is used in one place only, remove it and pass the device name into kunit_device_register directly as an ascii string. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Link: https://lore.kernel.org/r/20240815000431.401869-1-ivan.orlov0322@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
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Paul E. McKenney
|
ac9d45544c |
locking/csd_lock: Provide an indication of ongoing CSD-lock stall
If a CSD-lock stall goes on long enough, it will cause an RCU CPU stall warning. This additional warning provides much additional console-log traffic and little additional information. Therefore, provide a new csd_lock_is_stuck() function that returns true if there is an ongoing CSD-lock stall. This function will be used by the RCU CPU stall warnings to provide a one-line indication of the stall when this function returns true. [ neeraj.upadhyay: Apply Rik van Riel feedback. ] [ neeraj.upadhyay: Apply kernel test robot feedback. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Imran Khan <imran.f.khan@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Leonardo Bras <leobras@redhat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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Kent Overstreet
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b2f11c6f3e |
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Herbert Xu
|
da4fe6815a |
Revert "lib/mpi: Introduce ec implementation to MPI library"
This reverts commit
|
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Dmitry Vyukov
|
6cd0dd934b |
kcov: Add interrupt handling self test
Add a boot self test that can catch sprious coverage from interrupts. The coverage callback filters out interrupt code, but only after the handler updates preempt count. Some code periodically leaks out of that section and leads to spurious coverage. Add a best-effort (but simple) test that is likely to catch such bugs. If the test is enabled on CI systems that use KCOV, they should catch any issues fast. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://lore.kernel.org/all/7662127c97e29da1a748ad1c1539dd7b65b737b2.1718092070.git.dvyukov@google.com |
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Gatlin Newhouse
|
7424fc6b86 |
x86/traps: Enable UBSAN traps on x86
Currently ARM64 extracts which specific sanitizer has caused a trap via
encoded data in the trap instruction. Clang on x86 currently encodes the
same data in the UD1 instruction but x86 handle_bug() and
is_valid_bugaddr() currently only look at UD2.
Bring x86 to parity with ARM64, similar to commit
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Xavier
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93c8332c83 |
Union-Find: add a new module in kernel library
This patch implements a union-find data structure in the kernel library, which includes operations for allocating nodes, freeing nodes, finding the root of a node, and merging two nodes. Signed-off-by: Xavier <xavier_qy@163.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
|
cb04e8b1d2 |
minmax: don't use max() in situations that want a C constant expression
We only had a couple of array[] declarations, and changing them to just use 'MAX()' instead of 'max()' fixes the issue. This will allow us to simplify our min/max macros enormously, since they can now unconditionally use temporary variables to avoid using the argument values multiple times. Cc: David Laight <David.Laight@aculab.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
1a251f52cf |
minmax: make generic MIN() and MAX() macros available everywhere
This just standardizes the use of MIN() and MAX() macros, with the very traditional semantics. The goal is to use these for C constant expressions and for top-level / static initializers, and so be able to simplify the min()/max() macros. These macro names were used by various kernel code - they are very traditional, after all - and all such users have been fixed up, with a few different approaches: - trivial duplicated macro definitions have been removed Note that 'trivial' here means that it's obviously kernel code that already included all the major kernel headers, and thus gets the new generic MIN/MAX macros automatically. - non-trivial duplicated macro definitions are guarded with #ifndef This is the "yes, they define their own versions, but no, the include situation is not entirely obvious, and maybe they don't get the generic version automatically" case. - strange use case #1 A couple of drivers decided that the way they want to describe their versioning is with #define MAJ 1 #define MIN 2 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) which adds zero value and I just did my Alexander the Great impersonation, and rewrote that pointless Gordian knot as #define DRV_VERSION "1.2" instead. - strange use case #2 A couple of drivers thought that it's a good idea to have a random 'MIN' or 'MAX' define for a value or index into a table, rather than the traditional macro that takes arguments. These values were re-written as C enum's instead. The new function-line macros only expand when followed by an open parenthesis, and thus don't clash with enum use. Happily, there weren't really all that many of these cases, and a lot of users already had the pattern of using '#ifndef' guarding (or in one case just using '#undef MIN') before defining their own private version that does the same thing. I left such cases alone. Cc: David Laight <David.Laight@aculab.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
910bfc26d1 |
Rust changes for v6.11
The highlight is the establishment of a minimum version for the Rust toolchain, including 'rustc' (and bundled tools) and 'bindgen'. The initial minimum will be the pinned version we currently have, i.e. we are just widening the allowed versions. That covers 3 stable Rust releases: 1.78.0, 1.79.0, 1.80.0 (getting released tomorrow), plus beta, plus nightly. This should already be enough for kernel developers in distributions that provide recent Rust compiler versions routinely, such as Arch Linux, Debian Unstable (outside the freeze period), Fedora Linux, Gentoo Linux (especially the testing channel), Nix (unstable) and openSUSE Slowroll and Tumbleweed. In addition, the kernel is now being built-tested by Rust's pre-merge CI. That is, every change that is attempting to land into the Rust compiler is tested against the kernel, and it is merged only if it passes. Similarly, the bindgen tool has agreed to build the kernel in their CI too. Thus, with the pre-merge CI in place, both projects hope to avoid unintentional changes to Rust that break the kernel. This means that, in general, apart from intentional changes on their side (that we will need to workaround conditionally on our side), the upcoming Rust compiler versions should generally work. In addition, the Rust project has proposed getting the kernel into stable Rust (at least solving the main blockers) as one of its three flagship goals for 2024H2 [1]. I would like to thank Niko, Sid, Emilio et al. for their help promoting the collaboration between Rust and the kernel. [1] https://rust-lang.github.io/rust-project-goals/2024h2/index.html#flagship-goals Toolchain and infrastructure: - Support several Rust toolchain versions. - Support several bindgen versions. - Remove 'cargo' requirement and simplify 'rusttest', thanks to 'alloc' having been dropped last cycle. - Provide proper error reporting for the 'rust-analyzer' target. 'kernel' crate: - Add 'uaccess' module with a safe userspace pointers abstraction. - Add 'page' module with a 'struct page' abstraction. - Support more complex generics in workqueue's 'impl_has_work!' macro. 'macros' crate: - Add 'firmware' field support to the 'module!' macro. - Improve 'module!' macro documentation. Documentation: - Provide instructions on what packages should be installed to build the kernel in some popular Linux distributions. - Introduce the new kernel.org LLVM+Rust toolchains. - Explain '#[no_std]'. And a few other small bits. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPjU5OPd5QIZ9jqqOGXyLc2htIW0FAmahqRUACgkQGXyLc2ht IW0xbA/6A26b14LjvmFBJU6LZb0ey1BCbK9cOWtd6K6f/uWp108WAIdA/+gHgOGU I6rW8nXk3af078lHRqv0ihMDUks/1mz5wyxEXoZ/mVvRJbzH9TsHN7cSP2fr4H14 8rES4esr2XBlu9OdgDFb/o7jequ7PE0+WQDapV6eAhWQlBC6AI+ShyX26pWcB5gv 8O4mE59Up51d21L8apVh+pnEgBsCsu7c68pUMbrk2k4sHVvnRti4iLoVlemf4X80 Di9hyi8iN/MvWMdfq+hCIufUIbcWde07HcCbLjQlkJv0sc20V+UIGUx4EOUasOTY ugUyzhlFNGPxJYayAZAb8KJtQZhSbGZ+R244Z/CoV2RMlEw9LxSCpyzHr1nalOLT 01gqZh6+gIFyPm6F0ORsetcV6yzdvUcGTjx1vuEJ9qqeKG/gc/VqFOcmCPaT7y8K nTOMg6zY3mzaqTn1iBebid7INzXJN7ha9dk1TkDv47BNZAic51d3L0hQFXuDrEuu MxVIPTAPKJSaQTCh0jrLxLJ649v/98OP0urYqlVeKuTeovupETxCsBTVtjjjsv+w ZomqEO+JWuf7hjG0RLuCwi/IvWpUFpEdOal4qfHbKLOAOn7zxV/WrG675HcRKbw5 Zkr/0Q44fwbZWd2b/svTO1qOKaYV7oL0utVOdUb2KX05K71NNVo= =8PYF -----END PGP SIGNATURE----- Merge tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux Pull Rust updates from Miguel Ojeda: "The highlight is the establishment of a minimum version for the Rust toolchain, including 'rustc' (and bundled tools) and 'bindgen'. The initial minimum will be the pinned version we currently have, i.e. we are just widening the allowed versions. That covers three stable Rust releases: 1.78.0, 1.79.0, 1.80.0 (getting released tomorrow), plus beta, plus nightly. This should already be enough for kernel developers in distributions that provide recent Rust compiler versions routinely, such as Arch Linux, Debian Unstable (outside the freeze period), Fedora Linux, Gentoo Linux (especially the testing channel), Nix (unstable) and openSUSE Slowroll and Tumbleweed. In addition, the kernel is now being built-tested by Rust's pre-merge CI. That is, every change that is attempting to land into the Rust compiler is tested against the kernel, and it is merged only if it passes. Similarly, the bindgen tool has agreed to build the kernel in their CI too. Thus, with the pre-merge CI in place, both projects hope to avoid unintentional changes to Rust that break the kernel. This means that, in general, apart from intentional changes on their side (that we will need to workaround conditionally on our side), the upcoming Rust compiler versions should generally work. In addition, the Rust project has proposed getting the kernel into stable Rust (at least solving the main blockers) as one of its three flagship goals for 2024H2 [1]. I would like to thank Niko, Sid, Emilio et al. for their help promoting the collaboration between Rust and the kernel. Toolchain and infrastructure: - Support several Rust toolchain versions. - Support several bindgen versions. - Remove 'cargo' requirement and simplify 'rusttest', thanks to 'alloc' having been dropped last cycle. - Provide proper error reporting for the 'rust-analyzer' target. 'kernel' crate: - Add 'uaccess' module with a safe userspace pointers abstraction. - Add 'page' module with a 'struct page' abstraction. - Support more complex generics in workqueue's 'impl_has_work!' macro. 'macros' crate: - Add 'firmware' field support to the 'module!' macro. - Improve 'module!' macro documentation. Documentation: - Provide instructions on what packages should be installed to build the kernel in some popular Linux distributions. - Introduce the new kernel.org LLVM+Rust toolchains. - Explain '#[no_std]'. And a few other small bits" Link: https://rust-lang.github.io/rust-project-goals/2024h2/index.html#flagship-goals [1] * tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux: (26 commits) docs: rust: quick-start: add section on Linux distributions rust: warn about `bindgen` versions 0.66.0 and 0.66.1 rust: start supporting several `bindgen` versions rust: work around `bindgen` 0.69.0 issue rust: avoid assuming a particular `bindgen` build rust: start supporting several compiler versions rust: simplify Clippy warning flags set rust: relax most deny-level lints to warnings rust: allow `dead_code` for never constructed bindings rust: init: simplify from `map_err` to `inspect_err` rust: macros: indent list item in `paste!`'s docs rust: add abstraction for `struct page` rust: uaccess: add typed accessors for userspace pointers uaccess: always export _copy_[from|to]_user with CONFIG_RUST rust: uaccess: add userspace pointers kbuild: rust-analyzer: improve comment documentation kbuild: rust-analyzer: better error handling docs: rust: no_std is used rust: alloc: add __GFP_HIGHMEM flag rust: alloc: fix typo in docs for GFP_NOWAIT ... |
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|
Linus Torvalds
|
7b0acd911c |
11 hotfixes, 7 of which are cc:stable. 7 are MM, 4 are other.
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZqQWWQAKCRDdBJ7gKXxA jqJVAP9vU9HNzIyKDOOqoNHKMI+VzGn39w1FihWjG6AU5a+9NQD+MZJwr7bBwkpH ii43HLUGvNRQtsldBZSRypsaitCSwAI= =HGce -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-07-26-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "11 hotfixes, 7 of which are cc:stable. 7 are MM, 4 are other" * tag 'mm-hotfixes-stable-2024-07-26-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: nilfs2: handle inconsistent state in nilfs_btnode_create_block() selftests/mm: skip test for non-LPA2 and non-LVA systems mm/page_alloc: fix pcp->count race between drain_pages_zone() vs __rmqueue_pcplist() mm: memcg: add cacheline padding after lruvec in mem_cgroup_per_node alloc_tag: outline and export free_reserved_page() decompress_bunzip2: fix rare decompression failure mm/huge_memory: avoid PMD-size page cache if needed mm: huge_memory: use !CONFIG_64BIT to relax huge page alignment on 32 bit machines mm: fix old/young bit handling in the faulting path dt-bindings: arm: update James Clark's email address MAINTAINERS: mailmap: update James Clark's email address |
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Ross Lagerwall
|
bf6acd5d16 |
decompress_bunzip2: fix rare decompression failure
The decompression code parses a huffman tree and counts the number of
symbols for a given bit length. In rare cases, there may be >= 256
symbols with a given bit length, causing the unsigned char to overflow.
This causes a decompression failure later when the code tries and fails to
find the bit length for a given symbol.
Since the maximum number of symbols is 258, use unsigned short instead.
Link: https://lkml.kernel.org/r/20240717162016.1514077-1-ross.lagerwall@citrix.com
Fixes:
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|
Linus Torvalds
|
51c4767503 |
bitmap-6.11-rc1
Random fixes for v6.11. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmahKbIACgkQsUSA/Tof vsh8zQwAvguyeNubDFqdMe3E/Vp1J3WqXsBFzbE1rGLCyI2S0cgJFL5BlW51zY47 70wLt9EmroEobwj1qHSQlzejNp31kSBQ1Sqq25oivfJqEF1elDT5PQxYqBbU1C9Y kVWnxtb+oKaoFd5jiBK8+iTl8dXjT6H2RoV0zpPab/JPcqsjwFfkUvtENt/Kpo5c aRrGTFwshdp5eT4sEZQv57VKroBcwZOvv2//qrklFHrJHl4pjMT8eaX3twcQysoy umTVt+TK6NErLnht+VRQJ2/L02FKi7b+bHePVgNzaT+1FSDMT4FltmZd96Xwbzah hSkwWtqy0N2gaTcqie9nwdEiCJGjF39M7k2wangUS91CeDsbIUSsJgDCESUCm+zK hRqleGOnoeg4+jZBci7M53lKa/pADlmLhnU8iAc3BSKozsaioltkT+hHn8vAkstk h/kHlbfkzasufUWAhduBpIn384gWWEY6RACffgCsOuvbT+ZyDKUJpKYaEwVx+Pri l72j0hs9 =RbET -----END PGP SIGNATURE----- Merge tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux Pull bitmap updates from Yury Norov: "Random fixes" * tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux: riscv: Remove unnecessary int cast in variable_fls() radix tree test suite: put definition of bitmap_clear() into lib/bitmap.c bitops: Add a comment explaining the double underscore macros lib: bitmap: add missing MODULE_DESCRIPTION() macros cpumask: introduce assign_cpu() macro |
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|
Linus Torvalds
|
8bf100092d |
trivial printk changes for 6.11
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmaiUQcACgkQUqAMR0iA lPITNQ/+KDdmQljKwpuXlqe01F1mG/LFn5i1Y/a8fZVep/OSmihsgnEqnYzBomTq CF22tlrH7r6EZ2D5by1fjno/AG6/BAXvwH8jGDr9jhVNNBsneeVYrtMB1UUslR/e OEFoFKyzpq6VJNmHl5aAM95CEFEkE5uBba4DkJ/hCh3oErc2zP5DRdD9COCkdlIp +LzQa6XsMjwzrWAMAm2vWdBgePCHVKsAVVFUdfmN28FQw3BcFZEgIvN7vPT7Ee3I ESKx/Asb3myb1J7bFvDKnpT9O+7EkU/cpQn+HxjiIFVPqFLX3mfSXzgvfNocuPB0 hkIUzA9Sbu2wa+SE7qU1IwHVZj2N612OPso8lG8cbcic/KaYLpd6Kt7bnJe8kBe7 gFGBVmDjvapilQwWteWJcMs2hBxXuq0Xd+CMcXTMKYcLS8Z+4TVAYA8onssrUq+0 Jye8hW/CvST/P7wazVtuQu1fsKKz3SG+dAaXw9/7fYTGQ2LdRoLUkDhLkwqIURjD j6+pMMuYpxrpeA7yaOD1xLLOKC33OINClgfodjGVHvDlwxsQBhZFchCKsbufYEa1 CxFi8lDcfNVSGuw5x3a6iMqwnqxoeVKpi6eKKgpU81fXnGd4G2NA5jGRMycWmqzX +uUq6Ot1NO4QVK+pT70GhXMt2rQ6UsC1SyWggeFYBhaaqfIGKRk= =89Nl -----END PGP SIGNATURE----- Merge tag 'printk-for-6.11-trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - trivial printk changes The bigger "real" printk work is still being discussed. * tag 'printk-for-6.11-trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: vsprintf: add missing MODULE_DESCRIPTION() macro printk: Rename console_replay_all() and update context |