Received: by 2002:a05:7412:9c07:b0:fa:6e18:a558 with SMTP id lr7csp597437rdb; Sat, 27 Jan 2024 23:54:56 -0800 (PST) X-Google-Smtp-Source: AGHT+IE4FMl9NuB3+2n0X0YSToewLIBRDQ8WhziuQZXcMNjSbYaeLGHfrK5uZs2fyJz0xI3UByQP X-Received: by 2002:a05:6870:b415:b0:210:b21e:579 with SMTP id x21-20020a056870b41500b00210b21e0579mr2845218oap.35.1706428496786; Sat, 27 Jan 2024 23:54:56 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1706428496; cv=pass; d=google.com; s=arc-20160816; b=vbn8Nk7P7UbnedyukRtRyDxX4vr/pYwpBdbif+23jLM11F14wxXkgHx1vitEkRTpvj q26Rfe8kWya6pNG+SXaizWd1CAyBcvjPwp4OXiGyELah0olUHuunks30jgy7MRSvmum7 QP9LjiC1mxAklkReZ2TFDDC6jO2ip7XEgS4ON0+bOLQnTYGT6iAn514AyYFEQs5l7tn8 mMeJwEFSMR5Pz10d/KFxKia+9WQHT1PKhBypfIg2yNzgv+9yjCqQ5xHBQSAG3vObuluh Nsp0H7dhemcEWlyJt7w0zlgpWGn2nGL5eQQbDZhL8NTxsQUdfBMuRTAPBBy56jV9I8a5 InYg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from; bh=cV+ic8GYegFz2haSee5JirUduHayDZs+SzE92po9xBk=; fh=F90BF8ZHGD2Q++JnOF3iNWB6BdOxV2V+uuCj5ImTxS4=; b=SPmvdxt6AB/rMD/ct/p4t/YcsaAXkUm/8C1gzuH3SMDBMsC8wSohmgG1/yOrU6HlOe XyooOOQEdVU+wF1mYhrCd7oCDIyxS3UGgJ0QKMrlBugWP3Cov2BmQ/cPR6B/uNH+jyuZ ZVMJc7aU4WwyQ5blOihFgBz/x+TblaTtQSROr9ms4nfs7K1stQtvYyR2B67pOWbXfiNX cAekFjGfPkMFZQVm149xHeEN/lad6cY/Zj5HKWtiGC46D7u90Clkfd9dvbo6Do1mm/H+ YlDJfZda51DRcEfdfr2YfLp9yvqDIaKwk3TZakX9p36Y2g2sl41jRTlPdEXrVtBk+G4k us2g== ARC-Authentication-Results: i=2; mx.google.com; arc=pass (i=1 spf=pass spfdomain=sina.com); spf=pass (google.com: domain of linux-kernel+bounces-41559-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-41559-linux.lists.archive=gmail.com@vger.kernel.org" Return-Path: Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. [147.75.48.161]) by mx.google.com with ESMTPS id r6-20020a632b06000000b005ca5b61ca33si3864606pgr.224.2024.01.27.23.54.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 27 Jan 2024 23:54:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-41559-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=sina.com); spf=pass (google.com: domain of linux-kernel+bounces-41559-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-41559-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 73C9DB2211C for ; Sun, 28 Jan 2024 07:54:50 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8E641D529; Sun, 28 Jan 2024 07:54:40 +0000 (UTC) Received: from mail115-79.sinamail.sina.com.cn (mail115-79.sinamail.sina.com.cn [218.30.115.79]) (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 E8371D50F for ; Sun, 28 Jan 2024 07:54:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.30.115.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706428480; cv=none; b=R5VCCiV7E5ifHaltInCeQK5rTPuSeDhtk8DkwJ7k5BwOR2vr4zHjywgi8E3z1xokWx/6dOwTdysIMlv1KHimxbo90biYlnrM3RPI3AJRY84XWbm2eb972BAfwU21u6fq5HOhCSr25GvDi6HcFbAJQnp+VHPgSk7gnec2paQbwKU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706428480; c=relaxed/simple; bh=Da4WDq5HfuRP5KeCLqU386YWmOl7/PEp4QQBQqqilBQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=pLBPEoyIf+DAAkr1+Xn3eLwlB+eeFfNF9z+TW4ULMZRGCO2t0OJif6dcANn7FCOjAD540rd8ewPWfZN8qcIdsExzOvxDxsWyKBfHr+5iU6oytzNSFl7oSwNROX/rwvHDPvEoIItX2xHte12NMSWnIJCCOzeKwXQh+QofUI4uzuo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=218.30.115.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.118.68.210]) by sina.com (10.75.12.45) with ESMTP id 65B6080A000073EA; Sun, 28 Jan 2024 15:53:49 +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: 90553131457786 X-SMAIL-UIID: 751044471A7F4D6C9BC4786BB680DF9C-20240128-155349-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [overlayfs?] possible deadlock in seq_read_iter (2) Date: Sun, 28 Jan 2024 15:53:40 +0800 Message-Id: <20240128075340.1015-1-hdanton@sina.com> In-Reply-To: <0000000000008efd70060ce21487@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 On Tue, 19 Dec 2023 11:43:27 -0800 > syzbot has found a reproducer for the following issue on: > > HEAD commit: 2cf4f94d8e86 Merge tag 'scsi-fixes' of git://git.kernel.or.. > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154aa8d6e80000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master