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perf: Fix addr_filter_ranges lifetime

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Lee Jia Jie reported that since event::addr_filter_ranges is used
under RCU, it should be RCU freed.

Reported-by: Lee Jia Jie <jiajie.lee@starlabs.sg>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This commit is contained in:
Peter Zijlstra 2026-06-18 14:18:27 +02:00
parent 8cd9520d35
commit e62d4192e5
1 changed files with 1 additions and 2 deletions
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3
kernel/events/core.c
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@ -5303,6 +5303,7 @@ static void free_event_rcu(struct rcu_head *head)
if (event->ns)
put_pid_ns(event->ns);
perf_event_free_filter(event);
kfree(event->addr_filter_ranges);
kmem_cache_free(perf_event_cache, event);
}
@ -5750,8 +5751,6 @@ static void __free_event(struct perf_event *event)
if (event->attach_state & PERF_ATTACH_CALLCHAIN)
put_callchain_buffers();
kfree(event->addr_filter_ranges);
if (event->attach_state & PERF_ATTACH_EXCLUSIVE)
exclusive_event_destroy(event);