Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'perf_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Borislav Petkov:
- Prevent perf_sigtrap() from observing an exiting task and warning
about it
* tag 'perf_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix WARN in perf_sigtrap()
+7
-7
+7
-7
kernel/events/core.c
+7
-7
kernel/events/core.c
···
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static void perf_sigtrap(struct perf_event *event)
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{
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/*
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+
* Both perf_pending_task() and perf_pending_irq() can race with the
7208
+
* task exiting.
7209
+
*/
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+
if (current->flags & PF_EXITING)
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+
return;
7212
+
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+
/*
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* We'd expect this to only occur if the irq_work is delayed and either
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* ctx->task or current has changed in the meantime. This can be the
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* case on architectures that do not implement arch_irq_work_raise().
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*/
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if (WARN_ON_ONCE(event->ctx->task != current))
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-
return;
7213
-
7214
-
/*
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-
* Both perf_pending_task() and perf_pending_irq() can race with the
7216
-
* task exiting.
7217
-
*/
7218
-
if (current->flags & PF_EXITING)
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return;
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send_sig_perf((void __user *)event->pending_addr,