From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB5391CD23; Mon, 9 Sep 2024 15:15:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725894917; cv=none; b=Uul2Kw4saNpSbllB2diOTQvadtjteCRBlLzcHMdjfPTiQQTG/4ugNrvIKG2vXBB3Z05LEmeZjgA39agI3lx6wsZtkCEaqWR3ZUIlpK4Ak1z/y7MYf5EQvLNtLTCjVxBKn7L6ZOZRqi93+kYWJ2rtVZlDEK5N8f/HOVMIih4O97s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725894917; c=relaxed/simple; bh=2c4IFcMrbT8s2LSV2B0iAdU87SghNG8m8i2iTklh678=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=ZYW+aHSS1Hfwjp/59OzLRN+hWfYrGi1g1ayLLEHM3JcoA7bmwSC3SV4u6oSSuuynewWGvtcqdmlBtMafQmV+MPwnKTT9exWO1fiEsA7C4SwTupe3yHSe2GqCIFU5UsJuJivyfmLaEUY2m1Cjdalx6NBtV71uA9a9FSSwqam1lEg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AqTZ92NI; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AqTZ92NI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECD02C4CEC5; Mon, 9 Sep 2024 15:15:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725894917; bh=2c4IFcMrbT8s2LSV2B0iAdU87SghNG8m8i2iTklh678=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=AqTZ92NIu1O8pIQbQdKGj9VYgoE4k0n/0wJECDKpe5q++992zlyQ5ulDt2sjWvr3F Qq18nOaCu4fW/cxYKgABI4xSCNYuh7YXeq3ZH4fK11X0ZQZB7Bl6tCqp2H0tdvCBR7 0Z0mKGzn+/z3YPQ/dCGRhUes1MYkNo/PxB1im8CC/6ZoZBpUGw4F4QjMn1uyyYls0y 9nDwqBv0FMl1RPfUO/L28Cb3J3ZWGWAKsN9i10sGDFUBHH4GqUCrBoUjtu44llNVTA ylCHZh7UYXbnAoORXZ5IzuQPkL90BymUhI8QpJwRU5jx55MFFb3QWdD/P6uKeRs2xe jpZCmM2rt/f5w== Date: Tue, 10 Sep 2024 00:15:12 +0900 From: Masami Hiramatsu (Google) To: syzbot Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] Monthly trace report (Sep 2024) Message-Id: <20240910001512.f604fd970f2be1ef6e7f9189@kernel.org> In-Reply-To: <000000000000e69f460621ab50f4@google.com> References: <000000000000e69f460621ab50f4@google.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 09 Sep 2024 01:12:20 -0700 syzbot wrote: > Hello trace maintainers/developers, > > This is a 31-day syzbot report for the trace subsystem. > All related reports/information can be found at: > https://syzkaller.appspot.com/upstream/s/trace > > During the period, 1 new issues were detected and 0 were fixed. > In total, 8 issues are still open and 37 have been fixed so far. > > Some of the still happening issues: > > Ref Crashes Repro Title > <1> 2278 Yes possible deadlock in console_flush_all (3) > https://syzkaller.appspot.com/bug?extid=18cfb7f63482af8641df This is artifically injected circuler lock dependency about the combination of eBPF + fault injection. - BPF test program traces sched_switch event. (under rq->lock) - fault inject injects a fault in BPF's strncpy_from_user. - this fault printk dump to the console.(to lock console_owner) To avoid this issue, use another event to test fault injection. > <2> 1023 Yes WARNING in format_decode (3) > https://syzkaller.appspot.com/bug?extid=e2c932aec5c8a6e1d31c This seems also be caused by bpf test program. > <3> 31 Yes INFO: task hung in blk_trace_ioctl (4) > https://syzkaller.appspot.com/bug?extid=ed812ed461471ab17a0c This is a bug in blk_trace. > <4> 15 Yes WARNING in bpf_get_stack_raw_tp > https://syzkaller.appspot.com/bug?extid=ce35de20ed6652f60652 This may be a bpf issue. > <5> 11 Yes WARNING in get_probe_ref > https://syzkaller.appspot.com/bug?extid=8672dcb9d10011c0a160 This is a bug in blk_trace. It seems blk_trace does not check input parameters of ioctl correctly. Thank you, > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > To disable reminders for individual bugs, reply with the following command: > #syz set no-reminders > > To change bug's subsystems, reply with: > #syz set subsystems: new-subsystem > > You may send multiple commands in a single email message. -- Masami Hiramatsu (Google)