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Message-ID: <ZTzlUz5PMxr36K1S@gmail.com>
Date: Sat, 28 Oct 2023 12:41:23 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Jiri Olsa <jolsa@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Mark Rutland <mark.rutland@....com>,
Namhyung Kim <namhyung@...nel.org>,
linux-perf-users@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
Thomas Gleixner <tglx@...utronix.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] perf events fix
Linus,
Please pull the latest perf/urgent git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-2023-10-28
# HEAD: a71ef31485bb51b846e8db8b3a35e432cc15afb5 perf/core: Fix potential NULL deref
Fix a potential NULL dereference bug.
Thanks,
Ingo
------------------>
Peter Zijlstra (1):
perf/core: Fix potential NULL deref
kernel/events/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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;
}
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