From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-185.mta0.migadu.com (out-185.mta0.migadu.com [91.218.175.185]) (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 EA2DB2566D3 for ; Sat, 30 May 2026 02:15:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.185 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780107355; cv=none; b=toZ0SZoO44sxGf9Dfh2E6ENedeCgatxWnsEjOwGvGbua4bonVkk7uHg68HWUqK/q2r1NwfcOY92iTEAyqvwEbrZmZH5fc5Xb9Xx/FAettzM0CmYhgIUgkPe44i4QcPQEN0AR/6SiXR/BW0zsaHGb/FvGkPwrd9ModJVLfZtvIhY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780107355; c=relaxed/simple; bh=bjQJUJtZrp1YBsleye33KdPir7ezknk0jlJBRJBiZEw=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=p3pHbW2XqY9OEld2S6F8LQss8cy4kTIbJYyb1SsmmBbEcmFOqK5JAJu0GBVtyRHX9dsvCrny8gU5BG99EBcO9A1/pzcT1xnx/AenvVK6NgIVqo+zzqZzGC7zCINoJvG5wfj9lkkNYd8qAWG7xY6KVvBTiWS1nB9KrykVhJoJ/oM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=EluB9KZM; arc=none smtp.client-ip=91.218.175.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="EluB9KZM" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1780107350; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lLQLCkQB5oLXdJsyAmLo2oTeBgiPw0RzYWyI04oAWMo=; b=EluB9KZMc+TEF2cfbVKxyedc4hcGpbaOAQ8E5rsM4zqs0VO5SdXno4UjBtySruCMNfPrlL hOQuD9STNJiEyCQlFLu5qTjaQb23kgRLDbpIhYQLfp8Phu3jLbYQ4R/vopn92jx4J94BW+ R4or2XrheWdaSZGxI7/XVylB2QIKR08= Date: Fri, 29 May 2026 19:14:47 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [syzbot] [rdma] general protection fault in kernel_sock_shutdown (4) To: syzbot , linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, zyjzyj2000@gmail.com, "yanjun.zhu@linux.dev" References: <6a1a4683.b111c304.35cd64.0015.GAE@google.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zhu Yanjun In-Reply-To: <6a1a4683.b111c304.35cd64.0015.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT I don’t think the test results are correct. I ran the test twice. In the first run, a commit that is known to fix this issue was already included, but syzbot still reported the problem. In the second run, I removed that commit and introduced a similar fix instead, but syzbot still reported the same issue. In both cases, there was no call trace or any additional information provided. Given this, I suspect that syzbot may not actually be able to reproduce the issue. Thanks, Zhu Yanjun 在 2026/5/29 19:08, syzbot 写道: > Hello, > > syzbot has tested the proposed patch but the reproducer is still triggering an issue: > lost connection to test machine > > > > Tested on: > > commit: f569da7e DMA/rxe: Use rtnl_lock/unlock to fix it > git tree: https://github.com/zhuyj/linux null-ptr-deref_kernel_sock_shutdown > console output: https://syzkaller.appspot.com/x/log.txt?x=104669a6580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=8dc2c248e04d231d > dashboard link: https://syzkaller.appspot.com/bug?extid=d8f76778263ab65c2b21 > compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 > > Note: no patches were applied. -- Best Regards, Yanjun.Zhu