From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail3-163.sinamail.sina.com.cn (mail3-163.sinamail.sina.com.cn [202.108.3.163]) (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 0B5351A073F for ; Wed, 27 Aug 2025 21:38:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756330712; cv=none; b=P7cZfEFKoFtYWebS3/YluY3PdFn4emwulYVXoVxYBwmhQfJ0B5AeB2W/5jRpp+DDWpx+6sUKJEqtvYR58vAIQjbZezmsUfNMNmQ6y22ns6X8JRc7o249vgJ5LEY/Pp7+8G3FMauVznGYn3RUTzB777dBfy3e9V1GVz5Fz7ieOfE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756330712; c=relaxed/simple; bh=ceJYqMUs2QL1j1IFq4CxIZgJit55VEokOkXQ393Q+QY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rCwXXNAOQwiJJvB7ikrhTzsWLnhYQMQH1HUEJAC9YZerv2Oqnrt7B95TfNGS9NgJRI/Qth88yFuJPdDgtD2n/FmAl8Zf8gWfViaE2XafLnkkGxTKQqqUjfbXEZAKTFxDo/VvR0FPOeo1zn/n1YTA91IzP5VGgWWwZhMdrcEq03Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=jG8goVeZ; arc=none smtp.client-ip=202.108.3.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="jG8goVeZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1756330707; bh=dTQHUcYjQfaUFmKNuekDCKJWy/J4bod7ybCPgMo0FtA=; h=From:Subject:Date:Message-ID; b=jG8goVeZf674zgMQv457n9yQoodrI2Qc3uDecKUxGlAnCAHHI8+mAUPresvkSt3jg doS+6aLLtaMM3HF+/pzd52WXti8zj0mqK7PFMN5/+d66pgehvjE7Zg+jjNjIfTPNZx Z6VGKpO/iFiz9KzHnrETUFWo3iDqKgDzMF4zM8Rs= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.58.236]) by sina.com (10.54.253.34) with ESMTP id 68AF7ACD0000074E; Wed, 28 Aug 2025 05:38:23 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 6474936292000 X-SMAIL-UIID: 140A3B1CBBFE45B0A7A1CE011947AD5C-20250828-053823-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [block?] [ext4?] [btrfs?] INFO: rcu detected stall in sys_mount (8) Date: Thu, 28 Aug 2025 05:38:12 +0800 Message-ID: <20250827213813.5905-1-hdanton@sina.com> In-Reply-To: <68af0313.a70a0220.3cafd4.0020.GAE@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > Date: Wed, 27 Aug 2025 06:07:31 -0700 [thread overview] > Hello, > > syzbot found the following issue on: > > HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1 > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci > console output: https://syzkaller.appspot.com/x/log.txt?x=16a85ef0580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb > dashboard link: https://syzkaller.appspot.com/bug?extid=4507914ec56d21bb39ed > compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 > userspace arch: arm64 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1455a462580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12229462580000 #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git fixes