From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from r3-19.sinamail.sina.com.cn (r3-19.sinamail.sina.com.cn [202.108.3.19]) (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 517D8AD24 for ; Sun, 20 Jul 2025 23:30:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753054262; cv=none; b=bRFa371SGYAHsuTRNvTQPGiXuTasZJe2uwH4qHbW0reTtVd8d5p8b6ZWjSIu51zuJwogp1k1xSIgtGrztJJ+zvsopPpH0RTT5HcmvbkdI52ZErjpBWlwSgOhi7CrLUotEZmbVsPzMTko+vLrFKjIILTRPU96H0ROT6hz6RaKta8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753054262; c=relaxed/simple; bh=hdnlqTd445D9ouB6hRA4qaXvBNoPe1c9oETR+gF9Bog=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TTWRpM2sM24JlQgH0P4V029UI7cn7zsBjlUMIPrYycTO8gvjtRAPh8/HlRjLoVdPJx1dEB6XlwVokfwNyXVFNvX+HTw7tLrEHC/TJ1RvYEqvk9AZFCaT2q6vfg1Gv9ztidcHSp+2dg9EsiUfqaf7oDaiVnObMYsnBaxgftfbt5Y= 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=UfRzgzfy; arc=none smtp.client-ip=202.108.3.19 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="UfRzgzfy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1753054258; bh=l0jDcMiN9DSncCGaXXBVq6ob/ExH1QCf6rJAh1uc610=; h=From:Subject:Date:Message-ID; b=UfRzgzfyjHNoUlpW0aH9Pf0Dnps2fxy2vGmoMMXTBh4Cg3xNwN1P68taXQ2U2tQdg nZkUCC0f8iXZzXE5r7elshiFvnr72OO1/Q5Ft+lmQjCcQs7/t+1rsJSceGLIpukoV2 m8nDyO6Q6lhCnLMlTACcvrO9/kXS9DHRrJYho5NY= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.58.236]) by sina.com (10.54.253.32) with ESMTP id 687D7C270000030D; Sun, 21 Jul 2025 07:30:48 +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: 9683984457040 X-SMAIL-UIID: 33A8750B876D4A7BBBFDF6F55F2D808F-20250721-073048-1 From: Hillf Danton To: syzbot Cc: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_iop_getattr Date: Mon, 21 Jul 2025 07:30:34 +0800 Message-ID: <20250720233037.2567-1-hdanton@sina.com> In-Reply-To: <67f82b19.050a0220.355867.000f.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: Thu, 10 Apr 2025 13:33:29 -0700 [thread overview] > syzbot has found a reproducer for the following issue on: > > HEAD commit: 2eb959eeecc6 Merge tag 'for-linus-6.15a-rc2-tag' of git://.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16fdf23f980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4c918722cb7e3d7 > dashboard link: https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1352b7e4580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17499d78580000 #syz test upstream master