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signal: Fix the lock_task_sighand() annotation

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lock_task_sighand() may return NULL. Make this clear in its lock context
annotation.

Fixes: 04e49d926f ("sched: Enable context analysis for core.c and fair.c")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Marco Elver <elver@google.com>
Link: https://patch.msgid.link/20260225183244.4035378-3-bvanassche@acm.org
This commit is contained in:
Bart Van Assche
2026-02-25 10:32:42 -08:00
committed by Peter Zijlstra
parent 38e18d825f
commit 39be7b21af
1 changed files with 1 additions and 1 deletions
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include/linux/sched/signal.h
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@@ -739,7 +739,7 @@ static inline int thread_group_empty(struct task_struct *p)
extern struct sighand_struct *lock_task_sighand(struct task_struct *task,
unsigned long *flags)
__acquires(&task->sighand->siglock);
__cond_acquires(nonnull, &task->sighand->siglock);
static inline void unlock_task_sighand(struct task_struct *task,
unsigned long *flags)