From: Qing Wang <wangqing7171@gmail.com>
To: syzbot+9ea7c90be2b24e189592@syzkaller.appspotmail.com
Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org,
daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com,
john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
martin.lau@linux.dev, mathieu.desnoyers@efficios.com,
mattbobrowski@google.com, mhiramat@kernel.org,
rostedt@goodmis.org, sdf@fomichev.me, song@kernel.org,
syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev
Subject: Re: [syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run3 (2)
Date: Fri, 27 Feb 2026 14:17:59 +0800 [thread overview]
Message-ID: <20260227061759.1126681-1-wangqing7171@gmail.com> (raw)
In-Reply-To: <69a0544c.050a0220.3a55be.0004.GAE@google.com>
#syz test
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 2d14fb6d0ed0..f7a0116c7e46 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3783,6 +3783,8 @@ static void bpf_raw_tp_link_release(struct bpf_link *link)
bpf_probe_unregister(raw_tp->btp, raw_tp);
bpf_put_raw_tracepoint(raw_tp->btp);
+
+ tracepoint_synchronize_unregister();
}
static void bpf_raw_tp_link_dealloc(struct bpf_link *link)
next prev parent reply other threads:[~2026-02-27 6:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-26 14:10 [syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run3 (2) syzbot
2026-02-27 3:53 ` Qing Wang
2026-02-27 4:12 ` syzbot
2026-02-27 6:17 ` Qing Wang [this message]
2026-02-27 6:35 ` syzbot
2026-03-01 7:07 ` syzbot
2026-03-04 7:26 ` Qing Wang
2026-03-04 7:53 ` syzbot
2026-03-04 8:07 ` Qing Wang
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