Received: by 2002:ac0:bc90:0:0:0:0:0 with SMTP id a16csp866133img; Thu, 21 Mar 2019 10:33:06 -0700 (PDT) X-Google-Smtp-Source: APXvYqyWRTUPhCD/1W/U56ETphxb2787Y2zOzBVtd2M+0PD53hnY+wZR0ccu7sTRVBkE2iW5GSCf X-Received: by 2002:a63:4247:: with SMTP id p68mr4469178pga.30.1553189586511; Thu, 21 Mar 2019 10:33:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553189586; cv=none; d=google.com; s=arc-20160816; b=pdsxyygkBs08Crjg6AExigrFZZ5QnttTRkw3/WoLLq4S6aNk9t+tftvrztdsk6RQRi itFCmifhaoqP1brnt+YZI31VIxNSoI5t3ig9GORme1lcZuwl70jYQSR+8lGjSNmDZ/1D qN7vXPPwDzVTTuN6MkQxZWDnA79d8fUbVI26qrmwYmvbfrbOTDZxCiOzAml+f1b1mNxT B5HdB6Nxdd2HwVC5cyv8rf5OzZWaKkl99dxt0rf8nSlz4epqJtmFGltPAyoLDM0JA5co LQkebGPqNNukIBaotk9sN67YF8MGWVhF9qpknBmmH2LnLi4BdQMb7TtIrRBZFQbUth0c lp2w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:to:from:subject:message-id:in-reply-to :date:mime-version; bh=fLQGdQSSgHknyy/V+VRgiv7MKw96VhP0gMOndDdmz54=; b=aZSjtUv13jGB11us9/M6syfH7d429XP0wJK7q9nFpDoEia28IYfO72P3pZ/GQX4L2h gfbt+7SDrhR4frjE7iA8hP1FmSB5XjG/egzffFYV1urKGapZ4mK3mEaqZW0zx/VAlkL1 kDknLxWdb/aE65PLFjVS6pTAs4U+sHGjdOnF3HWDB5A+4G2fZJ8oHiJ4P6pPtQUdqhAg SUveXLOiEENSq6S3BjSpz8v7kM4uZYFNEoVDdm8efOfdInk1EPidQcIkZ+d2h0VyEKCH kpKN5bocYWkAcPi1afjmD5cDi6SAyHSFC4Iae5/tDDzx6e9pVQi4TBgbuWT+TjhyImIB 8mkQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id cw2si5243664plb.283.2019.03.21.10.32.48; Thu, 21 Mar 2019 10:33:06 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728657AbfCURaB (ORCPT + 99 others); Thu, 21 Mar 2019 13:30:01 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:60072 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728157AbfCURaB (ORCPT ); Thu, 21 Mar 2019 13:30:01 -0400 Received: by mail-it1-f197.google.com with SMTP id q192so3085054itb.9 for ; Thu, 21 Mar 2019 10:30:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=fLQGdQSSgHknyy/V+VRgiv7MKw96VhP0gMOndDdmz54=; b=joA5HDWzcRh6g2Zq3FISafFXzRnIIGRlt5HKJU5BhN95wl6s3m6YCfkvNT7KBP71jG WFCqDvOtcxoNNeHfkj/OFVYCtaPcRB8f+dt/kpkqVRyzDChMRAsavNJULPf1mCZYK766 eIP7Ro+nO+eeaAArpuFW3GCBTfGGuIqx3WGBha+RHInAiFl1pf3S+poutdF+7vp4wfWL W4C6DiDl4hkogldKAfaOR2vKGBff2YJchxOFpE+z35D3yNRm+85+49x+P0ZSFl+ZcnY0 bjj0f+H8ixZ/QNlyCDaoi5eT48Y+n/arILkxkkHmGFIYLGRffNbI+od1UW+Vr8YPNyWS CeIw== X-Gm-Message-State: APjAAAWCwpcChuVvZ8X9xDSMvBOuGBnw6ErdWzxJvxn0V1yGJkVECX08 jd4VVmmng6JXtvGuiClX3tP3GKIH/H090F9vsvLU2cQ8Y6on MIME-Version: 1.0 X-Received: by 2002:a6b:8d87:: with SMTP id p129mr3674003iod.10.1553189400392; Thu, 21 Mar 2019 10:30:00 -0700 (PDT) Date: Thu, 21 Mar 2019 10:30:00 -0700 In-Reply-To: <0000000000009a01370582c6772a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007ab8ab05849e1647@google.com> Subject: Re: INFO: rcu detected stall in ext4_file_write_iter From: syzbot To: acme@kernel.org, adilger.kernel@dilger.ca, dvyukov@google.com, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Bisection is inconclusive: the bug happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17b1becf200000 start commit: [unknown git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1471becf200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1071becf200000 dashboard link: https://syzkaller.appspot.com/bug?extid=7d19c5fe6a3f1161abb7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=103908f8c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=105e5cd0c00000 For information about bisection process see: https://goo.gl/tpsmEJ#bisection