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1,397,074 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Tejun Heo
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d723f36e01 |
sched_ext: Minor cleanups to scx_task_iter
- Use memset() in scx_task_iter_start() instead of zeroing fields individually.
- In scx_task_iter_next(), move __scx_task_iter_maybe_relock() after the batch
check which is simpler.
- Update comment to reflect that tasks are removed from scx_tasks when dead
(commit
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Tejun Heo
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023af03cae |
sched_ext: Move __SCX_DSQ_ITER_ALL_FLAGS BUILD_BUG_ON to the right place
The BUILD_BUG_ON() which checks that __SCX_DSQ_ITER_ALL_FLAGS doesn't overlap with the private lnode bits was in scx_task_iter_start() which has nothing to do with DSQ iteration. Move it to bpf_iter_scx_dsq_new() where it belongs. No functional changes. Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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7900aa699c |
sched_ext: Fix cgroup exit ordering by moving sched_ext_free() to finish_task_switch()
sched_ext_free() was called from __put_task_struct() when the last reference to the task is dropped, which could be long after the task has finished running. This causes cgroup-related problems: - ops.init_task() can be called on a cgroup which didn't get ops.cgroup_init()'d during scheduler load, because the cgroup might be destroyed/unlinked while the zombie or dead task is still lingering on the scx_tasks list. - ops.cgroup_exit() could be called before ops.exit_task() is called on all member tasks, leading to incorrect exit ordering. Fix by moving it to finish_task_switch() to be called right after the final context switch away from the dying task, matching when sched_class->task_dead() is called. Rename it to sched_ext_dead() to match the new calling context. By calling sched_ext_dead() before cgroup_task_dead(), we ensure that: - Tasks visible on scx_tasks list have valid cgroups during scheduler load, as cgroup_mutex prevents cgroup destruction while the task is still linked. - All member tasks have ops.exit_task() called and are removed from scx_tasks before the cgroup can be destroyed and trigger ops.cgroup_exit(). This fix is made possible by the cgroup_task_dead() split in the previous patch. This also makes more sense resource-wise as there's no point in keeping scheduler side resources around for dead tasks. Reported-by: Dan Schatzberg <dschatzberg@meta.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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587eb08a5f |
sched_ext: Merge branch 'for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup into for-6.19
Pull cgroup/for-6.19 to receive: |
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Tejun Heo
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d245698d72 |
cgroup: Defer task cgroup unlink until after the task is done switching out
When a task exits, css_set_move_task(tsk, cset, NULL, false) unlinks the task from its cgroup. From the cgroup's perspective, the task is now gone. If this makes the cgroup empty, it can be removed, triggering ->css_offline() callbacks that notify controllers the cgroup is going offline resource-wise. However, the exiting task can still run, perform memory operations, and schedule until the final context switch in finish_task_switch(). This creates a confusing situation where controllers are told a cgroup is offline while resource activities are still happening in it. While this hasn't broken existing controllers, it has caused direct confusion for sched_ext schedulers. Split cgroup_task_exit() into two functions. cgroup_task_exit() now only calls the subsystem exit callbacks and continues to be called from do_exit(). The css_set cleanup is moved to the new cgroup_task_dead() which is called from finish_task_switch() after the final context switch, so that the cgroup only appears empty after the task is truly done running. This also reorders operations so that subsys->exit() is now called before unlinking from the cgroup, which shouldn't break anything. Cc: Dan Schatzberg <dschatzberg@meta.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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260fbcb92b |
cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()
Currently, cgroup_task_exit() adds thread group leaders with live member threads to their css_set's dying_tasks list (so cgroup.procs iteration can still see the leader), and cgroup_task_release() later removes them with list_del_init(&task->cg_list). An upcoming patch will defer the dying_tasks list addition, moving it from cgroup_task_exit() (called from do_exit()) to a new function called from finish_task_switch(). However, release_task() (which calls cgroup_task_release()) can run either before or after finish_task_switch(), creating a race where cgroup_task_release() might try to remove the task from dying_tasks before or while it's being added. Move the list_del_init() from cgroup_task_release() to cgroup_task_free() to fix this race. cgroup_task_free() runs from __put_task_struct(), which is always after both paths, making the cleanup safe. Cc: Dan Schatzberg <dschatzberg@meta.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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16dad7801a |
cgroup: Rename cgroup lifecycle hooks to cgroup_task_*()
The current names cgroup_exit(), cgroup_release(), and cgroup_free() are confusing because they look like they're operating on cgroups themselves when they're actually task lifecycle hooks. For example, cgroup_init() initializes the cgroup subsystem while cgroup_exit() is a task exit notification to cgroup. Rename them to cgroup_task_exit(), cgroup_task_release(), and cgroup_task_free() to make it clear that these operate on tasks. Cc: Dan Schatzberg <dschatzberg@meta.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Chen Ridong <chenridong@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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3442345644 |
sched_ext/tools: Restore backward compat with v6.12 kernels
Commit |
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Tejun Heo
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a3f5d48222 |
sched_ext: Allow scx_bpf_reenqueue_local() to be called from anywhere
The ops.cpu_acquire/release() callbacks miss events under multiple conditions. There are two distinct task dispatch gaps that can cause cpu_released flag desynchronization: 1. balance-to-pick_task gap: This is what was originally reported. balance_scx() can enqueue a task, but during consume_remote_task() when the rq lock is released, a higher priority task can be enqueued and ultimately picked while cpu_released remains false. This gap is closeable via RETRY_TASK handling. 2. ttwu-to-pick_task gap: ttwu() can directly dispatch a task to a CPU's local DSQ. By the time the sched path runs on the target CPU, higher class tasks may already be queued. In such cases, nothing on sched_ext side will be invoked, and the only solution would be a hook invoked regardless of sched class, which isn't desirable. Rather than adding invasive core hooks, BPF schedulers can use generic BPF mechanisms like tracepoints. From SCX scheduler's perspective, this is congruent with other mechanisms it already uses and doesn't add further friction. The main use case for cpu_release() was calling scx_bpf_reenqueue_local() when a CPU gets preempted by a higher priority scheduling class. However, the old scx_bpf_reenqueue_local() could only be called from cpu_release() context. Add a new version of scx_bpf_reenqueue_local() that can be called from any context by deferring the actual re-enqueue operation. This eliminates the need for cpu_acquire/release() ops entirely. Schedulers can now use standard BPF mechanisms like the sched_switch tracepoint to detect and handle CPU preemption. Update scx_qmap to demonstrate the new approach using sched_switch instead of cpu_release, with compat support for older kernels. Mark cpu_acquire/release() as deprecated. The old scx_bpf_reenqueue_local() variant will be removed in v6.23. Reported-by: Wen-Fang Liu <liuwenfang@honor.com> Link: https://lore.kernel.org/all/8d64c74118c6440f81bcf5a4ac6b9f00@honor.com/ Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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8803e6a7fb |
sched_ext: Factor out reenq_local() from scx_bpf_reenqueue_local()
Factor out the core re-enqueue logic from scx_bpf_reenqueue_local() into a new reenq_local() helper function. scx_bpf_reenqueue_local() now handles the BPF kfunc checks and calls reenq_local() to perform the actual work. This is a prep patch to allow reenq_local() to be called from other contexts. Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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180b4ac342 |
sched_ext: Split schedule_deferred() into locked and unlocked variants
schedule_deferred() currently requires the rq lock to be held so that it can use scheduler hooks for efficiency when available. However, there are cases where deferred actions need to be scheduled from contexts that don't hold the rq lock. Split into schedule_deferred() which can be called from any context and just queues irq_work, and schedule_deferred_locked() which requires the rq lock and can optimize by using scheduler hooks when available. Update the existing call site to use the _locked variant. Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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2d697e5f5a |
Merge branch 'for-6.18-fixes' into for-6.19
Pull to receive
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Andrea Righi
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f4fa7c25f6 |
sched_ext: Fix use of uninitialized variable in scx_bpf_cpuperf_set()
scx_bpf_cpuperf_set() has a typo where it dereferences the local
variable @sch, instead of the global @scx_root pointer. Fix by
dereferencing the correct variable.
Fixes:
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Tejun Heo
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b7d4b28db7 |
sched_ext: Use SCX_TASK_READY test instead of tryget_task_struct() during class switch
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Tejun Heo
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dcb938c453 |
sched_ext: Add ___compat suffix to scx_bpf_dsq_insert___v2 in compat.bpf.h
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Andrea Righi
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71d7847cad |
sched_ext: Fix scx_bpf_dsq_peek() with FIFO DSQs
When removing a task from a FIFO DSQ, we must delete it from the list
before updating dsq->first_task, otherwise the following lookup will
just re-read the same task, leaving first_task pointing to removed
entry.
This issue only affects DSQs operating in FIFO mode, as priority DSQs
correctly update the rbtree before re-evaluating the new first task.
Remove the item from the list before refreshing the first task to
guarantee the correct behavior in FIFO DSQs.
Fixes:
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Tejun Heo
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e67708823d |
sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast()
The find_user_dsq() function is called from contexts that are already
under RCU read lock protection. Switch from rhashtable_lookup_fast() to
rhashtable_lookup() to avoid redundant RCU locking.
Requires:
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Tejun Heo
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987e00035c |
sched_ext: Rename pnt_seq to kick_sync
The pnt_seq field and related infrastructure were originally named for "pick next task sequence", reflecting their original implementation in scx_next_task_picked(). However, the sequence counter is now incremented in both put_prev_task_scx() and pick_task_scx() and its purpose is to synchronize kick operations via SCX_KICK_WAIT, not specifically to track pick_next_task events. Rename to better reflect the actual semantics: - pnt_seq -> kick_sync - scx_kick_pseqs -> scx_kick_syncs - pseqs variables -> ksyncs - Update comments to refer to "kick_sync sequence" instead of "pick_task sequence" This is a pure renaming with no functional changes. Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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a379fa1e2c |
sched_ext: Fix SCX_KICK_WAIT to work reliably
SCX_KICK_WAIT is used to synchronously wait for the target CPU to complete a reschedule and can be used to implement operations like core scheduling. This used to be implemented by scx_next_task_picked() incrementing pnt_seq, which was always called when a CPU picks the next task to run, allowing SCX_KICK_WAIT to reliably wait for the target CPU to enter the scheduler and pick the next task. However, commit |
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Tejun Heo
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a9c1fbbd6d |
sched_ext: Don't kick CPUs running higher classes
When a sched_ext scheduler tries to kick a CPU, the CPU may be running a higher class task. sched_ext has no control over such CPUs. A sched_ext scheduler couldn't have expected to get access to the CPU after kicking it anyway. Skip kicking when the target CPU is running a higher class. Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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2dbbdeda77 |
sched_ext: Fix scx_bpf_dsq_insert() backward binary compatibility
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Waiman Long
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d5cf4d34a3 |
cgroup/cpuset: Don't track # of local child partitions
The cpuset structure has a nr_subparts field which tracks the number of child local partitions underneath a particular cpuset. Right now, nr_subparts is only used in partition_is_populated() to avoid iteration of child cpusets if the condition is right. So by always performing the child iteration, we can avoid tracking the number of child partitions and simplify the code a bit. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
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211ddde082 | Linux 6.18-rc2 v6.18-rc2 | ||
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Linus Torvalds
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d9043c79ba |
- Make sure the check for lost pelt idle time is done unconditionally to
have correct lost idle time accounting - Stop the deadline server task before a CPU goes offline -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmj0yvsACgkQEsHwGGHe VUqiYRAAncYon7a++87nuCHIw2ktAcjn4PJTz0F1VGw9ZvcbWThUhNoA17jd4uOz XCzSH1rnHnlz359cJIzFwgVYjkBIaqT8GBN0al9ODra37laZCo89bKLmOeAlH81H 1xJXrDwn7U8dYBjgf6E6OGCdAx40kspCBxmpxrFW1VrGDvfNjEAKezm5GWeSED0Z umA93dBr82i4IvfARUkK8s35ctHyx+o+7lCvCSsKSJgM02WWrKqAA/lv6jFjIgdE 0UuYJv+5A2e1Iog2KNSbvSPn23VaMnsZtvXfJoRLFHEsNTiL9NliTnwrOY6xx0Z8 9+GUeWsbobKwcKSk4dctOh0g/4afNbxWe2aAPmScHJNHtXHSeejps+zy4xFCLTZn 2muHCdZ2zo6YSL+og4TQax+FnLYnGUtPFDOQYsNxv/Cp1H+cbgvG5Qp08XXt8Tfl Mt82g25GKklc28AN5Ui7FKTFmV2K363pV04YVZjXOwmxwiEYbwKw8gKfxi7CRW7S fl4nW6Kp8BFtJQxc/RCXDIiX3h0wRlTOmF5FzyFYxgdsmO5AdGqS9tqknLrV2NlH JVtj7alnrmCU34LwtTVfCvYQZiNd4IN+B6/htsL3AzrcLnqJz4O/T/Eyv9UL4yUs yvQuO+yStCyk0BFYaGM3/E0xp87NYjaLiHnpM2jia3DT3UT1t7Q= =uqJW -----END PGP SIGNATURE----- Merge tag 'sched_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Borislav Petkov: - Make sure the check for lost pelt idle time is done unconditionally to have correct lost idle time accounting - Stop the deadline server task before a CPU goes offline * tag 'sched_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix pelt lost idle time detection sched/deadline: Stop dl_server before CPU goes offline |
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Linus Torvalds
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343b4b44a1 |
- Make sure perf reporting works correctly in setups using overlayfs or FUSE
- Move the uprobe optimization to a better location logically -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmj0x3YACgkQEsHwGGHe VUo6nQ/9E8LWC6PJG40QUXNZuj5qLe9VVaiWTW7w/zgeCf9nxkt6OhlOIu4fCMKz 6n5marqnvOoG9EXetUz5+n0wJvc9vDACESC0m6ESddaI4PGXULNJIsN2C5dR3UZ3 RULxaXvz9PVVkW3UIuM/U9az7fsG/ttH1rtrWQOsUYQZEO7vA9g+8KtASwnB7yBa 29WzVDYQIuHigdFPkVOuKBEdhslOjNjMM/N/shFOyFS62MGgwwFG/f4xv0c2GanJ 9gS2HPGhwOXLm8x/1Y6D8eKjiT5lvqZcDcRnui8bj7L7YGx+HU4PhRIIg7sBvGqA QQGolxA9Xo2BTufUTxEQK9v2fSvg0f9wuKbkDbRUdyUeWiZZjEeBM/m0AkzEEeKf FUrLCi3V/mN5J/sXSgIwjuCtYctwmsfaukL2bz6DB7feoTHceQmHunKCtBlDZtLE Md/4hzMNYM+T/3nx27quGz8Cepxn9PSObN7W+DddWr0TxOxg2Pq6iMbnd7MulueP K/AMvqDtbbVUB1XpsFvadRLcYUYYfXT9tiOCxa9O2w2NXDG8qeB6FZwScBaWuz1N 9GpKBhVMgZT8m0d3N8NoBi0+h32UVZnsJJ3UhHnceE8UyYf4kSO5L2K3nPHJa301 AavIPkH7+YOl5TAg6JlyYbRRdwfoUzxKUqY/hQ6Q8aLvwb2Jing= =huy7 -----END PGP SIGNATURE----- Merge tag 'perf_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Borislav Petkov: - Make sure perf reporting works correctly in setups using overlayfs or FUSE - Move the uprobe optimization to a better location logically * tag 'perf_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix MMAP2 event device with backing files perf/core: Fix MMAP event path names with backing files perf/core: Fix address filter match with backing files uprobe: Move arch_uprobe_optimize right after handlers execution |
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Linus Torvalds
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c7864eeaa4 |
- Reset the why-the-system-rebooted register on AMD to avoid stale bits
remaining from previous boots - Add a missing barrier in the TLB flushing code to prevent erroneously not flushing a TLB generation - Make sure cpa_flush() does not overshoot when computing the end range of a flush region - Fix resctrl bandwidth counting on AMD systems when the amount of monitoring groups created exceeds the number the hardware can track -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmj0xcIACgkQEsHwGGHe VUq+VA/+Jlb1/m3eBGupCDmfGjT+vhoJ+twfmUDwA4yo5RzABHPOk4y+Q+M5Kmxy yhOP+XbT5I2W4x/LNT5oSTHJyG5QbDLTs1Hvpbqan6BHD6PA+1mv5lfv/LtNqSK4 lDZbJeJElpmozhCD6qznLZjbooh1qP4RkpszAyUjd/Sns4TtAJbZ4IBfKCpCtSfx E2X6FW28jBDVzJdDjMm5UfI+7VJmLgA46XUAgEfYxwfIWeQkV28f31+xGch7WW4C u41fOo6AI4mzHpdKdwzn4GJdH46UfMg+E8CTcwODxvG40ttskilnfWvwnyCsPWbD nTU/ubzTrra8BpeuAYVhVxuBam0fRmZVcEtE59DjG1EhVrt3dEqfhMraHKxjvboW vlauvhzkG4lezTHLX8EqnqS7csq0ziBU8tcYCxRA4OKTGTp1y0VfSw/ra4uLY8NJ pkjS3KK0VNhD6zthbhtfZ0LaB3ms0eYaTZyPsLhzxwi0/Wm/LTWO+sKX9r9DPafp LqzdSdik5YSv2fepxjzVOh1FALvLm+At4sh4Z6NtzLVm2dDrsN31hLVEJL7FUkwi d6gVhlII7CNrlIuuC2EsSXymYTdpoMFdKGOoq0RxPz0StSKzkFTFt8lpfb5bdSq+ VVU8DDFwwQ2iAW2IaogOwItH+tbY15P0kU2RlYey2UHub+Ho1vI= =WMx2 -----END PGP SIGNATURE----- Merge tag 'x86_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Reset the why-the-system-rebooted register on AMD to avoid stale bits remaining from previous boots - Add a missing barrier in the TLB flushing code to prevent erroneously not flushing a TLB generation - Make sure cpa_flush() does not overshoot when computing the end range of a flush region - Fix resctrl bandwidth counting on AMD systems when the amount of monitoring groups created exceeds the number the hardware can track * tag 'x86_urgent_for_v6.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/CPU/AMD: Prevent reset reasons from being retained across reboot x86/mm: Fix SMP ordering in switch_mm_irqs_off() x86/mm: Fix overflow in __cpa_addr() x86/resctrl: Fix miscount of bandwidth event when reactivating previously unavailable RMID |
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Andrea Righi
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67fa319f5f |
sched_ext: Allow forcibly picking an scx task
Refactor pick_task_scx() adding a new argument to forcibly pick a SCHED_EXT task, ignoring any higher-priority sched class activity. This refactoring prepares the code for future scenarios, e.g., allowing the ext dl_server to force a SCHED_EXT task selection. No functional changes. Suggested-by: Tejun Heo <tj@kernel.org> Signed-off-by: Andrea Righi <arighi@nvidia.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
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1c64efcb08 |
Rust 'rustfmt' cleanup
'rustfmt', by default, formats imports in a way that is prone to conflicts while merging and rebasing, since in some cases it condenses several items into the same line. Document in our guidelines that we will handle this for the moment with the trailing empty comment workaround and make the tree 'rustfmt'-clean again. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPjU5OPd5QIZ9jqqOGXyLc2htIW0FAmjzy+0ACgkQGXyLc2ht IW2K9BAAmdHFQlI5kE2qFBVrk5JeTBmr/3GJ7wzPXKgQ/XdKgYILK5qx8SaqXo95 RXnGSFzPXmVx1xds5NojVqJ65gnoyL9KK4qsxFOUVVoH2vjSWXL5DFrRDcVKFlGY IRlsdRBGdX8/M6gPgLAy2m2eEeNgrwEA/xcWgfvZhI7CILSfvXDNKfGvnzg0mRHp cssYtKTACwzE3/uJUA8lX+HAWNrb1aijEUlvfK5K9CMYwP9wFXzXy1eI2kJ4Yzvx aqiK1vvieAl4gbLAoCD513nSxCQaUzpuHJvELA6bVa8uJ5GtWcuCA9U8qn8zcaaG tOmC/kF/+5jNwc4/4wCSHhcQD+1qaXZVQjeMBYsObqFv7ixabOlxVfGk/oDbAHEI BAtWsqHFMhQlo/E/YdH0palVhvslecnoAhTzURwL9231Sqp6ZeQl5ESya8ArmMFB SFeYMHtDhA557pA4G3R88IIVS+xWklNOVtcW1+c+YnW4d+Sb77aU9E78VKYmH0mt 5rYB0ni09rcDBNRGUSy7fscfUV5ItJd/lccwjRGasM0LzZ6KoMWE2B0Cww5vG27W FXQ9hTsn1q92XY3AFiqR5IBiztNLZfjFEq6HAVSQrmXgHJ53ZT/0oFRcObYAsr49 AjoLzkHcevdj7EUdm9q1o/KVk+t+bkDYjmb3kRgHVOwdekK/Jk8= =44ap -----END PGP SIGNATURE----- Merge tag 'rust-rustfmt' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux Pull rustfmt fixes from Miguel Ojeda: "Rust 'rustfmt' cleanup 'rustfmt', by default, formats imports in a way that is prone to conflicts while merging and rebasing, since in some cases it condenses several items into the same line. Document in our guidelines that we will handle this for the moment with the trailing empty comment workaround and make the tree 'rustfmt'-clean again" * tag 'rust-rustfmt' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: rust: bitmap: fix formatting rust: cpufreq: fix formatting rust: alloc: employ a trailing comment to keep vertical layout docs: rust: add section on imports formatting |
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Linus Torvalds
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648937f64a |
Hi,
If possible, could you still pick this change for v6.18 [1]? The change in question corrects the state transitions for ARM FF-A to match the spec and how tpm_crb behaves on other platforms. [1] https://lore.kernel.org/linux-integrity/aPN59bwcUrieMACf@kernel.org/ BR, Jarkko -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRE6pSOnaBC00OEHEIaerohdGur0gUCaPN84QAKCRAaerohdGur 0q4SAQD0o1dG70qraZjVU+xySiz/jGb04d49A/LxKJj/LIXxPQD/W3xjulnS3S25 rWoIn7wO6NeiGUiUPSnCEc6LDIOYYQA= =wbvF -----END PGP SIGNATURE----- Merge tag 'tpmdd-next-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull tpm fix from Jarkko Sakkinen: "Correct the state transitions for ARM FF-A to match the spec and how tpm_crb behaves on other platforms" * tag 'tpmdd-next-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: tpm_crb: Add idle support for the Arm FF-A start method |
||
|
Linus Torvalds
|
e67bb0da33 |
pci-v6.18-fixes-2
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|
Linus Torvalds
|
ea0bdf2b94 |
cxl fixes for v6.18-rc2
- Avoid missing port component registers setup due to dport enumeration
failure
- Add check for no entries in cxl_feature_info to address accessing
invalid pointer.
- Use %pa printk format to emit resource_size_t in
validate_region_offset()
CXL extended linear cache support fixes:
- Fix setup of memory resource in cxl_acpi_set_cache_size()
- Set range param for region_res_match_cxl_range() as const.
(Addresses a compile warning for match_region_by_range() fix)
- Fix match_region_by_range() to use region_res_match_cxl_range()
- Subtract to find an hpa_alias0 in cxl_poison events to correct
the alias math calculation.
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Merge tag 'cxl-fixes-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull Compute Express Link fixes from Dave Jiang:
"A small collection of CXL fixes. In addition to some misc fixes for
the CXL subsystem, a number of fixes for CXL extended linear cache
support are included to make it functional again.
- Avoid missing port component registers setup due to dport
enumeration failure
- Add check for no entries in cxl_feature_info to address accessing
invalid pointer.
- Use %pa printk format to emit resource_size_t in
validate_region_offset()
CXL extended linear cache support fixes:
- Fix setup of memory resource in cxl_acpi_set_cache_size()
- Set range param for region_res_match_cxl_range() as const
(addresses a compile warning for match_region_by_range() fix)
- Fix match_region_by_range() to use region_res_match_cxl_range()
- Subtract to find an hpa_alias0 in cxl_poison events to correct the
alias math calculation"
* tag 'cxl-fixes-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/trace: Subtract to find an hpa_alias0 in cxl_poison events
cxl/region: Use %pa printk format to emit resource_size_t
cxl: Fix match_region_by_range() to use region_res_match_cxl_range()
cxl: Set range param for region_res_match_cxl_range() as const
cxl/acpi: Fix setup of memory resource in cxl_acpi_set_cache_size()
cxl/features: Add check for no entries in cxl_feature_info
cxl/port: Avoid missing port component registers setup
|
||
|
Linus Torvalds
|
2953fb6548 |
hid-for-linus-2025101701
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|
Linus Torvalds
|
d303caf5ca |
bpf-fixes
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|
Linus Torvalds
|
847f242f7a |
Description for this pull request:
- Fix out-of-bounds in FS_IOC_SETFSLABEL. - Add validation for stream entry valid size to prevent infinite loop. -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEE6NzKS6Uv/XAAGHgyZwv7A1FEIQgFAmjy83gWHGxpbmtpbmpl b25Aa2VybmVsLm9yZwAKCRBnC/sDUUQhCLoTD/sEUM1PpRJmSBRzH+9Le/tSAjK7 M0MSLkryRvvFKdigCCtHD5LLoNJrc+i4bP6AgTO9l0PJ5OlAwxAQ1Qh4mAOIfazk ahpw/WzI1B/qC28zuKepFJS3x05InACb5pwv293AwgEiS/ROfpfAJQ8NGp54cWFm ge7/jBU19BX1HLC7PSleNStdwSi+oEKz7twtl+7n5kvgzi3eTJWnXGhYJWDGwpYY n9OZQBELliGhLnzeuDuGXddpVKQ0jbH+kchQ7dJAiN3jYq7FeYEsrapFmuae2r+N MEjEoKg4pmuf3z3Iru+XQ30xGCOs2lKz9LfowxRcl5xTqxmH5XxqZZF/UdQITXh0 VYLRjhSfA5Fp2kUHmPayvkLHkzILzNjSF1Vqhk2En2C99RSywcJkvaFr5cnE3v3a gueO8eZ+QRSXQVpKCTHS98wPcJrnzPXSTpwF9uKSHKBzNWIee3tLHRZb1nvUuHKo bNB2iEDwracb5eEpOoa+7L0VOS8M6sFnAveWF9yNVR9vG36Cs7eXtrFIk/xQmr2s FlqjPpx1xWodnE9IxrJi8qSJxAgJtrO6UG1gut7lBK6RHIhkt2B7YUQPr30V8zVx f3FszNERZe/D/bvgM5WHyoieMnp5sZAxq0f7pk+2pOTIqvlbojWCAGoqP2P6BN2Y mu9lnM3D6k/GfLNbww== =A0dK -----END PGP SIGNATURE----- Merge tag 'exfat-for-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat Pull exfat fixes from Namjae Jeon: - Fix out-of-bounds in FS_IOC_SETFSLABEL - Add validation for stream entry size to prevent infinite loop * tag 'exfat-for-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat: exfat: fix out-of-bounds in exfat_nls_to_ucs2() exfat: fix improper check of dentry.stream.valid_size |
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|
Linus Torvalds
|
2d07c6c209 |
NFS Client Bugfixes for Linux 6.18-rc
Bugfixes: * Fix for FlexFiles mirror->dss allocation * Apply delay_retrans to async operations * Check if suid/sgid is cleared after a write when needed * Fix setting the state renewal timer for early mounts after a reboot -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAmjyqWYACgkQ18tUv7Cl QOuuhBAAtW3JjqOvuJdUKqLnvEB7p9MJCbJuLvxu3IncS7LR4ApMthogQNws/kYH sU44KZh1lIe0G6juYTR4SmpwuJ1VbPJ7tZ+ZAssfp29mLQu3txybK9o21jZMu+jH qjPRH4VIbfJot77lhBykSk+JzpxQMC89JaZbC5sgATHfTstQPiHtBSQ7zwC5EY8f dBmh2mlhRbBsblHw6KZq5QhNR6E1XsXMWGE8GoyzQR4QAWTNOtM+QIBkUapREODG 4HCnW/7JEUNuaAAYMovqqxv+qGC/axEEjZdVEGyiOvliSIs9RM2CCSQnDZQ619DI xCV3Qxvbsr22dDX5O127If/vXNisWJM7JzB65yX2y0ZlAAIoDX6XwADDtnvMlHPX KI+CqwGyk41Wwc9F6WPOL+NUwaqCcVumeDGBSZ5LFN4uqR1SeSfztAVqgtDU++u4 cePZlNXwob5BlzfqF8DG5uGagxirXIiwOo6N63xSCWuU0NMwfdi7wrMLi/cfFqeg xCyB6mSm+BE6qSwppzSupHxwuQH0RzOSsSAQArKarEICnQfmgKAd98r6fDkRffJQ mrfUGMF/bvf7kDyv9kywjFw+KPWr0DNWRjFaLF9gcIxyI6Ml5HDFVzkK7WpI0dou N/rO/XGjNt8mVYgAG1BgFRXwSE2NRufNbQTygVUfe7coBSjth+Y= =p2V5 -----END PGP SIGNATURE----- Merge tag 'nfs-for-6.18-2' of git://git.linux-nfs.org/projects/anna/linux-nfs Pull NFS client fixes from Anna Schumaker: - Fix for FlexFiles mirror->dss allocation - Apply delay_retrans to async operations - Check if suid/sgid is cleared after a write when needed - Fix setting the state renewal timer for early mounts after a reboot * tag 'nfs-for-6.18-2' of git://git.linux-nfs.org/projects/anna/linux-nfs: NFS4: Fix state renewals missing after boot NFS: check if suid/sgid was cleared after a write as needed NFS4: Apply delay_retrans to async operations NFSv4/flexfiles: fix to allocate mirror->dss before use |
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Linus Torvalds
|
4ccb3a8000 |
smb client fixes and some clealup
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Merge tag '6.18-rc1-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"smb client fixes, security and smbdirect improvements, and some minor cleanup:
- Important OOB DFS fix
- Fix various potential tcon refcount leaks
- smbdirect (RDMA) fixes (following up from test event a few weeks
ago):
- Fixes to improve and simplify handling of memory lifetime of
smbdirect_mr_io structures, when a connection gets disconnected
- Make sure we really wait to reach SMBDIRECT_SOCKET_DISCONNECTED
before destroying resources
- Make sure the send/recv submission/completion queues are large
enough to avoid ib_post_send() from failing under pressure
- convert cifs.ko to use the recommended crypto libraries (instead of
crypto_shash), this also can improve performance
- Three small cleanup patches"
* tag '6.18-rc1-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6: (24 commits)
smb: client: Consolidate cmac(aes) shash allocation
smb: client: Remove obsolete crypto_shash allocations
smb: client: Use HMAC-MD5 library for NTLMv2
smb: client: Use MD5 library for SMB1 signature calculation
smb: client: Use MD5 library for M-F symlink hashing
smb: client: Use HMAC-SHA256 library for SMB2 signature calculation
smb: client: Use HMAC-SHA256 library for key generation
smb: client: Use SHA-512 library for SMB3.1.1 preauth hash
cifs: parse_dfs_referrals: prevent oob on malformed input
smb: client: Fix refcount leak for cifs_sb_tlink
smb: client: let smbd_destroy() wait for SMBDIRECT_SOCKET_DISCONNECTED
smb: move some duplicate definitions to common/cifsglob.h
smb: client: let destroy_mr_list() keep smbdirect_mr_io memory if registered
smb: client: let destroy_mr_list() call ib_dereg_mr() before ib_dma_unmap_sg()
smb: client: call ib_dma_unmap_sg if mr->sgt.nents is not 0
smb: client: improve logic in smbd_deregister_mr()
smb: client: improve logic in smbd_register_mr()
smb: client: improve logic in allocate_mr_list()
smb: client: let destroy_mr_list() remove locked from the list
smb: client: let destroy_mr_list() call list_del(&mr->list)
...
|
||
|
Linus Torvalds
|
02e5f74ef0 |
ARM:
- Fix the handling of ZCR_EL2 in NV VMs - Pick the correct translation regime when doing a PTW on the back of a SEA - Prevent userspace from injecting an event into a vcpu that isn't initialised yet - Move timer save/restore to the sysreg handling code, fixing EL2 timer access in the process - Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug - Fix trapping configuration when the host isn't GICv3 - Improve the detection of HCR_EL2.E2H being RES1 - Drop a spurious 'break' statement in the S1 PTW - Don't try to access SPE when owned by EL3 Documentation updates: - Document the failure modes of event injection - Document that a GICv3 guest can be created on a GICv5 host with FEAT_GCIE_LEGACY Selftest improvements: - Add a selftest for the effective value of HCR_EL2.AMO - Address build warning in the timer selftest when building with clang - Teach irqfd selftests about non-x86 architectures - Add missing sysregs to the set_id_regs selftest - Fix vcpu allocation in the vgic_lpi_stress selftest - Correctly enable interrupts in the vgic_lpi_stress selftest x86: - Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test for the bug fixed by commit |
||
|
Linus Torvalds
|
0e622c4b0e |
powerpc fixes for 6.18 #2
- Fix to handle NULL pointer dereference at irq domain teardown - Fix for handling extraction of struct xive_irq_data - Fix to skip parameter area allocation when fadump disabled Thanks to: Ganesh Goudar, Hari Bathini, Nam Cao, Ritesh Harjani (IBM) Sourabh Jain, Venkat Rao Bagalkote, -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEqX2DNAOgU8sBX3pRpnEsdPSHZJQFAmjzbw8ACgkQpnEsdPSH ZJQRQQ//S+NgNrn7KloQ28W+zLauH1GZKTkAwR3D8M1wFWwkM4guyxhHVCagxO6d dL1Hs4dUzoCfum6qw2/E0Jc/4ul7YLv3QeiTyz6UwytrZOHeUy7WvPUtksb22+Hk FSdUP/hD2td8SP1V4vsJVuK58DieiwNMpXvPssnq9wmCJoepKNdc3TTFSIRWji92 PfL9ooYwoT5flW7nvf7Tx0ZbfL1pEIbTjEufsQOINofTadZnOfSvJoq0zYf5VFFF 8v1YDOqWfBvWJWR0eLLdS8S0tWLIf6e8h6cQkWIninvsVU1LtWhcbGiq1xD3BTFl RYCTkUzNjFAf0lvkjfheXylqKZhoDglfGsHQhADCL0cCtSbRCUYkz24+n7m7se3Y 0hj1Xs3hi4ELH/i5m6VZqL3sEsXnOLOfA8fD9mhDCy+33RK5jMNdNhTjTLsSmW1T m0E7gF6Yt16BTggWuQJREXtEVCQbQOxhDZwuG4tw3bAU3VAuyUbkVggS9Fadb81Q klTGTAY8s3BxTzjVzeQByhOCtpyRgkKX3UEYH2CwGHi5NbpcSKlQx7q7JuxenkP4 aOY9A1oCc4H/vjM2hUOtdu9wUO4hxMrGwv8Nk0dJFFGOJLS/ArdXTvcayrX2J8I9 Rnkd+ztef8n7lkVjjl82WrRD/gIDMFXZQvsos0nHTS+pRdMX2mk= =YUzr -----END PGP SIGNATURE----- Merge tag 'powerpc-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Madhavan Srinivasan: - Fix to handle NULL pointer dereference at irq domain teardown - Fix for handling extraction of struct xive_irq_data - Fix to skip parameter area allocation when fadump disabled Thanks to Ganesh Goudar, Hari Bathini, Nam Cao, Ritesh Harjani (IBM), Sourabh Jain, and Venkat Rao Bagalkote, * tag 'powerpc-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/fadump: skip parameter area allocation when fadump is disabled powerpc, ocxl: Fix extraction of struct xive_irq_data powerpc/pseries/msi: Fix NULL pointer dereference at irq domain teardown |
||
|
Linus Torvalds
|
959f018f97 |
slab fixes for 6.18-rc2
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||
Stuart Yoder
|
dbfdaeb381 |
tpm_crb: Add idle support for the Arm FF-A start method
According to the CRB over FF-A specification [1], a TPM that implements the ABI must comply with the TCG PTP specification. This requires support for the Idle and Ready states. This patch implements CRB control area requests for goIdle and cmdReady on FF-A based TPMs. The FF-A message used to notify the TPM of CRB updates includes a locality parameter, which provides a hint to the TPM about which locality modified the CRB. This patch adds a locality parameter to __crb_go_idle() and __crb_cmd_ready() to support this. [1] https://developer.arm.com/documentation/den0138/latest/ Signed-off-by: Stuart Yoder <stuart.yoder@arm.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
||
Paolo Bonzini
|
4361f5aa8b |
KVM x86 fixes for 6.18:
- Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test for the
bug fixed by commit
|
||
|
Paolo Bonzini
|
5d26eaae15 |
KVM/arm64 fixes for 6.18, take #1
Improvements and bug fixes: - Fix the handling of ZCR_EL2 in NV VMs (20250926194108.84093-1-oliver.upton@linux.dev) - Pick the correct translation regime when doing a PTW on the back of a SEA (20250926224246.731748-1-oliver.upton@linux.dev) - Prevent userspace from injecting an event into a vcpu that isn't initialised yet (20250930085237.108326-1-oliver.upton@linux.dev) - Move timer save/restore to the sysreg handling code, fixing EL2 timer access in the process (20250929160458.3351788-1-maz@kernel.org) - Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug (20250924235150.617451-1-oliver.upton@linux.dev) - Fix trapping configuration when the host isn't GICv3 (20251007160704.1673584-1-sascha.bischoff@arm.com) - Improve the detection of HCR_EL2.E2H being RES1 (20251009121239.29370-1-maz@kernel.org) - Drop a spurious 'break' statement in the S1 PTW (20250930135621.162050-1-osama.abdelkader@gmail.com) - Don't try to access SPE when owned by EL3 (20251010174707.1684200-1-mukesh.ojha@oss.qualcomm.com) Documentation updates: - Document the failure modes of event injection (20250930233620.124607-1-oliver.upton@linux.dev) - Document that a GICv3 guest can be created on a GICv5 host with FEAT_GCIE_LEGACY (20251007154848.1640444-1-sascha.bischoff@arm.com) Selftest improvements: - Add a sesttest for the effective value of HCR_EL2.AMO (20250926224454.734066-1-oliver.upton@linux.dev) - Address build warning in the timer selftest when building with clang (20250926155838.2612205-1-seanjc@google.com) - Teach irq_fd selftests about non-x86 architectures (20250930193301.119859-1-oliver.upton@linux.dev) - Add missing sysregs to the set_id_regs selftest (20251012154352.61133-1-zenghui.yu@linux.dev) - Fix vcpu allocation in the vgic_lpi_stress selftest (20251008154520.54801-1-zenghui.yu@linux.dev) - Correctly enable interrupts in the vgic_lpi_stress selftest (20251007195254.260539-1-oliver.upton@linux.dev) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmjuPmEACgkQI9DQutE9 ekPsvhAAnvqnMtZA/4PkW7JemIBZQYKEiMWrSnsdxj+0wDYN0wvyT1Bwrnqr/QLi i+4eBNCqiydxQrIg3nocmd4mtmfTZAZfwYPuYOW2Z5j2eJ1+xkkiacbCJZZTRXR1 mzLhZ/kFWBHf37OhluMQjaCWokiBQN3H699Sxs7GXZT/KpWz3EunjtBAe2oinUUX so0j5NSYHiTNON8VSfNwLi9HXEMmEZVvuao7TMaN0xUQIM0Kvlic6XzbvCvSga9S gldsmab5JtN3N/ZSCsYTn5Cr2TctbQVxwgH2QVdPADzImbu+nxI4r4f7MCL6lNYw AueVHzYSFAJHieebd10ZF1tiJVar2cQ9wVc4JwDfaZv4TwCcv6SHzBaxFf26LuSN uVVRCwOZRoewXI2k57Sp6TU/uhzc11tSK4hZTt/tUY5AG7zraEC4c0flbjhfhngp FCssLsfQiPBmAOhsxBnUvYDf8WXlrhvfhZLGSmfPrO9fxL5Yd8dU6nvuAjtvjLG7 8579QqAtllo9yxV3na5GTtdBDlloWXl1yIzrGVW21UoAd23kXFcKFmnZoGKbvw6F yccCCU2bZ3s4USH9h4fJJqYDfi01LQsU219G8m696zD76oeMnt8/TZvD2/atZIBR uF/nd71btHP+mHC4aKScWERGt0edZEJeP71G+1OubOgPG+q6+Cs= =DOeP -----END PGP SIGNATURE----- Merge tag 'kvmarm-fixes-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 fixes for 6.18, take #1 Improvements and bug fixes: - Fix the handling of ZCR_EL2 in NV VMs (20250926194108.84093-1-oliver.upton@linux.dev) - Pick the correct translation regime when doing a PTW on the back of a SEA (20250926224246.731748-1-oliver.upton@linux.dev) - Prevent userspace from injecting an event into a vcpu that isn't initialised yet (20250930085237.108326-1-oliver.upton@linux.dev) - Move timer save/restore to the sysreg handling code, fixing EL2 timer access in the process (20250929160458.3351788-1-maz@kernel.org) - Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug (20250924235150.617451-1-oliver.upton@linux.dev) - Fix trapping configuration when the host isn't GICv3 (20251007160704.1673584-1-sascha.bischoff@arm.com) - Improve the detection of HCR_EL2.E2H being RES1 (20251009121239.29370-1-maz@kernel.org) - Drop a spurious 'break' statement in the S1 PTW (20250930135621.162050-1-osama.abdelkader@gmail.com) - Don't try to access SPE when owned by EL3 (20251010174707.1684200-1-mukesh.ojha@oss.qualcomm.com) Documentation updates: - Document the failure modes of event injection (20250930233620.124607-1-oliver.upton@linux.dev) - Document that a GICv3 guest can be created on a GICv5 host with FEAT_GCIE_LEGACY (20251007154848.1640444-1-sascha.bischoff@arm.com) Selftest improvements: - Add a selftest for the effective value of HCR_EL2.AMO (20250926224454.734066-1-oliver.upton@linux.dev) - Address build warning in the timer selftest when building with clang (20250926155838.2612205-1-seanjc@google.com) - Teach irq_fd selftests about non-x86 architectures (20250930193301.119859-1-oliver.upton@linux.dev) - Add missing sysregs to the set_id_regs selftest (20251012154352.61133-1-zenghui.yu@linux.dev) - Fix vcpu allocation in the vgic_lpi_stress selftest (20251008154520.54801-1-zenghui.yu@linux.dev) - Correctly enable interrupts in the vgic_lpi_stress selftest (20251007195254.260539-1-oliver.upton@linux.dev) |
||
|
Linus Torvalds
|
f406055cb1 |
arm64 fixes:
- Explicitly encode the XZR register if the value passed to
write_sysreg_s() is 0. The GIC CDEOI instruction is encoded as a
system register write with XZR as the source register. However, clang
does not honour the "Z" register constraint, leading to incorrect
code generation
- Ensure the interrupts (DAIF.IF) are unmasked when completing
single-step of a suspended breakpoint before calling
exit_to_user_mode(). With pseudo-NMIs, interrupts are (additionally)
masked at the PMR_EL1 register, handled by local_irq_*()
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Explicitly encode the XZR register if the value passed to
write_sysreg_s() is 0.
The GIC CDEOI instruction is encoded as a system register write with
XZR as the source register. However, clang does not honour the "Z"
register constraint, leading to incorrect code generation
- Ensure the interrupts (DAIF.IF) are unmasked when completing
single-step of a suspended breakpoint before calling
exit_to_user_mode().
With pseudo-NMIs, interrupts are (additionally) masked at the PMR_EL1
register, handled by local_irq_*()
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: debug: always unmask interrupts in el0_softstp()
arm64/sysreg: Fix GIC CDEOI instruction encoding
|
||
|
Linus Torvalds
|
fe69107ec7 |
RISC-V updates for v6.18-rc2
Some RISC-V fixes for v6.18-rc2, including changes to: - Disable CFI with Rust for any platform other than x86 and ARM64 - Keep task mm_cpumasks up-to-date to avoid triggering M-mode firmware warnings if the kernel tries to send an IPI to an offline CPU - Improve kprobe address validation performance and avoid desyncs (following x86) - Avoid duplicate device probes by avoiding DT hardware probing when ACPI is enabled in early boot - Use the correct set of dependencies for CONFIG_ARCH_HAS_ELF_CORE_EFLAGS, avoiding an allnoconfig warning - Fix a few other minor issues -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEElRDoIDdEz9/svf2Kx4+xDQu9KksFAmjx8FsACgkQx4+xDQu9 KkuXEQ/7BDWfsM7XReMU1Nt8nUXsJRXxM8USSkJR0jx7+kHPSkOXOTeT5I0oz2kX 1CE5OEReZUlbKEkbmdBaHgO+oqAOzPWQhLtA4Cx+t0Tzj5ruCEA0jh1Z0jP42OFT gKQjuJoLIavNYplER+HRdOELdnQgdaoqfys7Ym6j0ReXpRnJ1mB9M/9PCqM+9t7Z QQGIJk8sUeAeeedtsEs3db7KmjZalBX16/BnDq2SV8lqgQRfDps94yIFzH8FVc6h 641oATm9CJQFii8Vm356ndEpp9ta7jjkPVJbzvXsIv8GE+RoSrm2fiYB1PsZaU3Q C+pGMxVu/y3xImJTIJUFp250b/p4u5AIbUDdFIKKE/Szp8J/Svue6ojlT9LvKaEl Ontc/XIVJ9s5bf+oB+L9HUqH+LEdui4edD3Ovy2DurSTXfvzkr2AD8f93fziHfnI VyUUhludzMCRv3X2oAqvc3qrUEtilJb0tATAiJYpmWDI/RQLF3bTSaaurqrq1l9L HOehShBRnVXmDHhoxzRzh+FHFfViSPYOqA0SEjMjIPobN60zxULNohMjyFndA8jO MD1QrJqgRKNCBBmtmZadzeXksKTgCtPtR+isnDahS8o7q0UOhDeZliQqyHq++SsH sd+28DnZY0evVpOW7+nuxwlMu7jzEduMsDuqRgTpBx2GbkYkQd4= =ZOFG -----END PGP SIGNATURE----- Merge tag 'riscv-for-linux-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Paul Walmsley: - Disable CFI with Rust for any platform other than x86 and ARM64 - Keep task mm_cpumasks up-to-date to avoid triggering M-mode firmware warnings if the kernel tries to send an IPI to an offline CPU - Improve kprobe address validation performance and avoid desyncs (following x86) - Avoid duplicate device probes by avoiding DT hardware probing when ACPI is enabled in early boot - Use the correct set of dependencies for CONFIG_ARCH_HAS_ELF_CORE_EFLAGS, avoiding an allnoconfig warning - Fix a few other minor issues * tag 'riscv-for-linux-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: kprobes: convert one final __ASSEMBLY__ to __ASSEMBLER__ riscv: Respect dependencies of ARCH_HAS_ELF_CORE_EFLAGS riscv: acpi: avoid errors caused by probing DT devices when ACPI is used riscv: kprobes: Fix probe address validation riscv: entry: fix typo in comment 'instruciton' -> 'instruction' RISC-V: clear hot-unplugged cores from all task mm_cpumasks to avoid rfence errors riscv: kgdb: Ensure that BUFMAX > NUMREGBYTES rust: cfi: only 64-bit arm and x86 support CFI_CLANG |
||
Brahmajit Das
|
a1e83d4c03 |
selftests/bpf: Fix redefinition of 'off' as different kind of symbol
This fixes the following build error
CLNG-BPF [test_progs] verifier_global_ptr_args.bpf.o
progs/verifier_global_ptr_args.c:228:5: error: redefinition of 'off' as
different kind of symbol
228 | u32 off;
| ^
The symbol 'off' was previously defined in
tools/testing/selftests/bpf/tools/include/vmlinux.h, which includes an
enum i40e_ptp_gpio_pin_state from
drivers/net/ethernet/intel/i40e/i40e_ptp.c:
enum i40e_ptp_gpio_pin_state {
end = -2,
invalid = -1,
off = 0,
in_A = 1,
in_B = 2,
out_A = 3,
out_B = 4,
};
This enum is included when CONFIG_I40E is enabled. As of commit
|
||
Sahil Chandna
|
7c33e97a6e |
bpf: Do not disable preemption in bpf_test_run().
The timer mode is initialized to NO_PREEMPT mode by default, this disables preemption and force execution in atomic context causing issue on PREEMPT_RT configurations when invoking spin_lock_bh(), leading to the following warning: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6107, name: syz.0.17 preempt_count: 1, expected: 0 RCU nest depth: 1, expected: 1 Preemption disabled at: [<ffffffff891fce58>] bpf_test_timer_enter+0xf8/0x140 net/bpf/test_run.c:42 Fix this, by removing NO_PREEMPT/NO_MIGRATE mode check. Also, the test timer context no longer needs explicit calls to migrate_disable()/migrate_enable() with rcu_read_lock()/rcu_read_unlock(). Use helpers rcu_read_lock_dont_migrate() and rcu_read_unlock_migrate() instead. Reported-by: syzbot+1f1fbecb9413cdbfbef8@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=1f1fbecb9413cdbfbef8 Suggested-by: Yonghong Song <yonghong.song@linux.dev> Suggested-by: Menglong Dong <menglong.dong@linux.dev> Acked-by: Yonghong Song <yonghong.song@linux.dev> Tested-by: syzbot+1f1fbecb9413cdbfbef8@syzkaller.appspotmail.com Co-developed-by: Brahmajit Das <listout@listout.xyz> Signed-off-by: Brahmajit Das <listout@listout.xyz> Signed-off-by: Sahil Chandna <chandna.sahil@gmail.com> Link: https://lore.kernel.org/r/20251014185635.10300-1-chandna.sahil@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
Ada Couprie Diaz
|
ea0d55ae4b |
arm64: debug: always unmask interrupts in el0_softstp()
We intend that EL0 exception handlers unmask all DAIF exceptions
before calling exit_to_user_mode().
When completing single-step of a suspended breakpoint, we do not call
local_daif_restore(DAIF_PROCCTX) before calling exit_to_user_mode(),
leaving all DAIF exceptions masked.
When pseudo-NMIs are not in use this is benign.
When pseudo-NMIs are in use, this is unsound. At this point interrupts
are masked by both DAIF.IF and PMR_EL1, and subsequent irq flag
manipulation may not work correctly. For example, a subsequent
local_irq_enable() within exit_to_user_mode_loop() will only unmask
interrupts via PMR_EL1 (leaving those masked via DAIF.IF), and
anything depending on interrupts being unmasked (e.g. delivery of
signals) will not work correctly.
This was detected by CONFIG_ARM64_DEBUG_PRIORITY_MASKING.
Move the call to `try_step_suspended_breakpoints()` outside of the check
so that interrupts can be unmasked even if we don't call the step handler.
Fixes:
|
||
Lorenzo Pieralisi
|
e9ad390a48 |
arm64/sysreg: Fix GIC CDEOI instruction encoding
The GIC CDEOI system instruction requires the Rt field to be set to 0b11111
otherwise the instruction behaviour becomes CONSTRAINED UNPREDICTABLE.
Currenly, its usage is encoded as a system register write, with a constant
0 value:
write_sysreg_s(0, GICV5_OP_GIC_CDEOI)
While compiling with GCC, the 0 constant value, through these asm
constraints and modifiers ('x' modifier and 'Z' constraint combo):
asm volatile(__msr_s(r, "%x0") : : "rZ" (__val));
forces the compiler to issue the XZR register for the MSR operation (ie
that corresponds to Rt == 0b11111) issuing the right instruction encoding.
Unfortunately LLVM does not yet understand that modifier/constraint
combo so it ends up issuing a different register from XZR for the MSR
source, which in turns means that it encodes the GIC CDEOI instruction
wrongly and the instruction behaviour becomes CONSTRAINED UNPREDICTABLE
that we must prevent.
Add a conditional to write_sysreg_s() macro that detects whether it
is passed a constant 0 value and issues an MSR write with XZR as source
register - explicitly doing what the asm modifier/constraint is meant to
achieve through constraints/modifiers, fixing the LLVM compilation issue.
Fixes:
|
||
|
Linus Torvalds
|
6f3b6e91f7 |
io_uring-6.18-20251016
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Linus Torvalds
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0c8df15f75 |
block-6.18-20251016
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Merge tag 'block-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- iostats accounting fixed on multipath retries (Amit)
- secure concatenation response fixup (Martin)
- tls partial record fixup (Wilfred)
- Fix for a lockdep reported issue with the elevator lock and
blk group frozen operations
- Fix for a regression in this merge window, where updating
'nr_requests' would not do the right thing for queues with
shared tags
* tag 'block-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
nvme/tcp: handle tls partially sent records in write_space()
block: Remove elevator_lock usage from blkg_conf frozen operations
blk-mq: fix stale tag depth for shared sched tags in blk_mq_update_nr_requests()
nvme-auth: update sc_c in host response
nvme-multipath: Skip nr_active increments in RETRY disposition
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