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Merge tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull perf event fix from Thomas Gleixner:
 "A single fix for the perf core where a value read with READ_ONCE() was
  checked and then reread which makes all the checks invalid. Reuse the
  already read value instead"

* tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  events: Reuse value read using READ_ONCE instead of re-reading it
This commit is contained in:
Linus Torvalds
2021-09-19 13:22:40 -07:00
parent f5e29a26c4 b89a05b21f
commit fec3036200
1 changed files with 1 additions and 1 deletions
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2
kernel/events/core.c
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@@ -10193,7 +10193,7 @@ static void perf_event_addr_filters_apply(struct perf_event *event)
return;
if (ifh->nr_file_filters) {
mm = get_task_mm(event->ctx->task);
mm = get_task_mm(task);
if (!mm)
goto restart;