From: Qing Wang <wangqing7171@gmail.com>
To: syzbot+3b5dd2030fe08afdf65d@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
mathieu.desnoyers@efficios.com, mhiramat@kernel.org,
rostedt@goodmis.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [trace?] WARNING in tracing_buffers_mmap_close (3)
Date: Thu, 26 Feb 2026 14:16:25 +0800 [thread overview]
Message-ID: <20260226061625.30751-1-wangqing7171@gmail.com> (raw)
In-Reply-To: <699fc6d3.a00a0220.21906d.0073.GAE@google.com>
#syz test
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 23de3719f495..c74ba9c8c98e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -8251,12 +8251,14 @@ static int tracing_buffers_mmap(struct file *filp, struct vm_area_struct *vma)
return ret;
ret = ring_buffer_map(iter->array_buffer->buffer, iter->cpu_file, vma);
- if (ret)
+ if (ret) {
put_snapshot_map(iter->tr);
+ return ret;
+ }
vma->vm_ops = &tracing_buffers_vmops;
- return ret;
+ return 0;
}
static const struct file_operations tracing_buffers_fops = {
next prev parent reply other threads:[~2026-02-26 6:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-26 4:06 [syzbot] [trace?] WARNING in tracing_buffers_mmap_close (3) syzbot
2026-02-26 6:16 ` Qing Wang [this message]
2026-02-26 6:34 ` syzbot
2026-02-26 8:00 ` Qing Wang
2026-02-26 8:18 ` syzbot
2026-02-26 9:16 ` Qing Wang
2026-02-26 9:43 ` syzbot
2026-02-26 16:52 ` Steven Rostedt
2026-02-27 3:07 ` Qing Wang
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