From: Qing Wang <wangqing7171@gmail.com>
To: syzbot+196a82fd904572696b3c@syzkaller.appspotmail.com
Cc: acme@kernel.org, adrian.hunter@intel.com,
alexander.shishkin@linux.intel.com, irogers@google.com,
james.clark@linaro.org, jolsa@kernel.org,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org,
peterz@infradead.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [perf?] possible deadlock in refcount_dec_and_mutex_lock (2)
Date: Mon, 9 Mar 2026 14:22:23 +0800 [thread overview]
Message-ID: <20260309062223.1953399-1-wangqing7171@gmail.com> (raw)
In-Reply-To: <69abcb61.050a0220.13f275.0040.GAE@google.com>
#syz test
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1f5699b339ec..e5ce03ce926d 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7485,9 +7485,12 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
*/
ret = map_range(event->rb, vma);
if (ret)
- perf_mmap_close(vma);
+ goto out_close;
}
+ return 0;
+out_close:
+ perf_mmap_close(vma);
return ret;
}
next prev parent reply other threads:[~2026-03-09 6:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-07 6:53 [syzbot] [perf?] possible deadlock in refcount_dec_and_mutex_lock (2) syzbot
2026-03-07 11:07 ` Tetsuo Handa
2026-03-09 5:57 ` Qing Wang
2026-03-09 6:17 ` syzbot
2026-03-09 6:22 ` Qing Wang [this message]
2026-03-09 6:40 ` syzbot
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