From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 54A21156253 for ; Wed, 15 May 2024 16:13:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715789600; cv=none; b=lij+vtrf5MBttV5/4FuU+1F4eErfWWTZqRRr/8k1X1DW/I7DhQ2xu0EeoUpBTHDSdm479RWqBrU/ZOsEzfLny/jPrRNS9dkAPrfi4Qzbp3rM7rr7h1tWfOFmCYSZZE654cJLA+fJXX3cYcot5GVBwCElr6k3EF7+1Znn2+SXrBc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715789600; c=relaxed/simple; bh=t0Mk3nKAEE1cLuIRjfdcpsTNbeHzdncxmWNweD36IOU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=OzR0VHzgAg18mYJ6QRZWJdgSSEd1H7RSlARoy5HRWBVP5k7lXYF6c0aJj41SSGsK+Wgttw4Op2TDXWNmWFGPx8y+Q8DcCkR6l6ti3Sj5+po3hhd3iUtPjdrpQQEChkPZJk/4zIs52p3GfpurFdlH9Gxpo0n3UHauL6jlzS64wVk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-7deb999eea4so746971239f.3 for ; Wed, 15 May 2024 09:13:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715789598; x=1716394398; h=cc:to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=vvsLw4l0vqKGby5/Tujji+uOTjNgc4o/TW7Xk81Qv2Q=; b=XKmfRQvgZSVpL4PoT0jOwn6GQxldekurNEnZ/tWIQenu54wepQJ59zyl8qNEM0Ml93 RIZAcvtWzwxvnd8E14ahI+XWtzOmAzIpbC6x06fRE+9tOZ//A9LGmy1JASPZ+MrasYR0 f4+YKYU/uw0FP8NOQ5amoDFW8T2fVwM9ifzy1vR9x6t4aaPgYnDNzlAE5l7VXOS6wpLA 8w43OfZFwGC/J34GSG+GGNuinJ6a2bnI3cua7/4RYTRVjFQ7k8E+RLCsPcpSSeYuo7HC iHD/He10pvJVvU3fkcGdcOI7HhrIzglYOB/qEe9qDrPZ0ygOk7/zTb2S0+sAAMYg967q xg9Q== X-Forwarded-Encrypted: i=1; AJvYcCVIuj9E2VyKX/vmU5vHOisL5OOeGcmmZ/XjAx9mLHy9g91hlUA9NA2qDO1I5tSNnAVE/bf/Z+hIUenN+s+oJs690CzBjAA5k+LeKSnb3g== X-Gm-Message-State: AOJu0YwDlb84QVVIUHav0Y+8ypfmbb09iUAlAkGcV9e72Y/WPPOlTmUC XqOO3xVGedWc53KaWLVxgkLLQhUM/dXBCUWdIus2qit9OFbk1zru50EsWYHhl+E6gI/WRihpcve 4Er5hIuLPqYxdHNGlWTht+TAccCk8lKgKwNyAP82Kw8XeKXAw//hWI5o= X-Google-Smtp-Source: AGHT+IG21YtExwT6/8ORt63x787W3Mh4x4nB2gggaQgJDKZHrwW7a5QBWjtJE2RURHC+qTbP8LJ+RwCnWEbVR0vWoc+wr7/Kg6jp Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:6c11:b0:7de:e1c6:c72b with SMTP id ca18e2360f4ac-7e1b51991admr57736939f.1.1715789597061; Wed, 15 May 2024 09:13:17 -0700 (PDT) Date: Wed, 15 May 2024 09:13:17 -0700 In-Reply-To: <20240515161314.GO4449@twin.jikos.cz> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007147c206188065ca@google.com> Subject: Re: kernel BUG at fs/inode.c:LINE! (2) From: syzbot To: dsterba@suse.cz Cc: axboe@kernel.dk, dsterba@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org, oleg@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" > On Fri, Aug 28, 2020 at 06:18:17AM -0700, syzbot wrote: >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: d012a719 Linux 5.9-rc2 >> git tree: upstream >> console output: https://syzkaller.appspot.com/x/log.txt?x=15aa650e900000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650 >> dashboard link: https://syzkaller.appspot.com/bug?extid=c92c93d1f1aaaacdb9db >> compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12ecb939900000 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140a19a9900000 >> >> The issue was bisected to: >> >> commit a9ed4a6560b8562b7e2e2bed9527e88001f7b682 >> Author: Marc Zyngier >> Date: Wed Aug 19 16:12:17 2020 +0000 >> >> epoll: Keep a reference on files added to the check list >> >> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16a50519900000 >> final oops: https://syzkaller.appspot.com/x/report.txt?x=15a50519900000 >> console output: https://syzkaller.appspot.com/x/log.txt?x=11a50519900000 >> >> IMPORTANT: if you fix the issue, please add the following tag to the commit: >> Reported-by: syzbot+c92c93d1f1aaaacdb9db@syzkaller.appspotmail.com >> Fixes: a9ed4a6560b8 ("epoll: Keep a reference on files added to the check list") >> >> ------------[ cut here ]------------ >> kernel BUG at fs/inode.c:1668! > > #syz set subsystem: fs The specified label "subsystem" is unknown. Please use one of the supported labels. The following labels are suported: missing-backport, no-reminders, prio: {low, normal, high}, subsystems: {.. see below ..} The list of subsystems: https://syzkaller.appspot.com/upstream/subsystems?all=true > > This has been among btrfs bugs but this is is 'fs' and probably with a > fix but I was not able to identify it among all the changes in > eventpoll.c