diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2023-10-24 11:42:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-10-24 12:15:12 +0200 |
| commit | a71ef31485bb51b846e8db8b3a35e432cc15afb5 (patch) | |
| tree | 1c6217197d73dde27343af3224e19de97b95b75c /kernel/events/core.c | |
| parent | 05d3ef8bba77c1b5f98d941d8b2d4aeab8118ef1 (diff) | |
perf/core: Fix potential NULL deref
Smatch is awesome.
Fixes: 32671e3799ca ("perf: Disallow mis-matched inherited group reads")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index d0663b9324e7..a2f2a9525d72 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -13372,7 +13372,8 @@ static int inherit_group(struct perf_event *parent_event, !perf_get_aux_event(child_ctr, leader)) return -EINVAL; } - leader->group_generation = parent_event->group_generation; + if (leader) + leader->group_generation = parent_event->group_generation; return 0; } |