Evolution-X-Devices/kernel_realme_sm7125
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signal: Replace BUG_ON()s

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[ Upstream commit 7f8af7bac5380f2d95a63a6f19964e22437166e1 ]

These really can be handled gracefully without killing the machine.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 0f9c27fbb8a52c50ff7d2659386f1f43e7fbddee)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
This commit is contained in:
Thomas Gleixner
2024-06-10 18:42:34 +02:00
committed by theshaenix
parent 655627d0cb
commit 3d53d0ddc2
1 changed files with 7 additions and 4 deletions
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11
kernel/signal.c
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@@ -1610,10 +1610,11 @@ struct sigqueue *sigqueue_alloc(void)
void sigqueue_free(struct sigqueue *q)
{
unsigned long flags;
spinlock_t *lock = &current->sighand->siglock;
unsigned long flags;
BUG_ON(!(q->flags & SIGQUEUE_PREALLOC));
if (WARN_ON_ONCE(!(q->flags & SIGQUEUE_PREALLOC)))
return;
/*
* We must hold ->siglock while testing q->list
* to serialize with collect_signal() or with
@@ -1640,7 +1641,10 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
unsigned long flags;
int ret, result;
BUG_ON(!(q->flags & SIGQUEUE_PREALLOC));
if (WARN_ON_ONCE(!(q->flags & SIGQUEUE_PREALLOC)))
return 0;
if (WARN_ON_ONCE(q->info.si_code != SI_TIMER))
return 0;
ret = -1;
if (!likely(lock_task_sighand(t, &flags)))
@@ -1657,7 +1661,6 @@ int send_sigqueue(struct sigqueue *q, struct task_struct *t, int group)
* If an SI_TIMER entry is already queue just increment
* the overrun count.
*/
BUG_ON(q->info.si_code != SI_TIMER);
q->info.si_overrun++;
result = TRACE_SIGNAL_ALREADY_PENDING;
goto out;