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| author | Peter Zijlstra <peterz@infradead.org> | 2026-06-18 14:18:27 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-06-19 12:05:00 +0200 |
| commit | e62d4192e593630f355094adc467058a05bdc935 (patch) | |
| tree | fc5679ba9949f5b0dc7ece28a9c93e7039b3bef6 /kernel | |
| parent | 8cd9520d35a6c38db6567e97dd93b1f11f185dc6 (diff) | |
| download | lwn-e62d4192e593630f355094adc467058a05bdc935.tar.gz lwn-e62d4192e593630f355094adc467058a05bdc935.zip | |
perf: Fix addr_filter_ranges lifetime
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 7935d5663944..c3a84c7bcaeb 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -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); |