From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C50CAC433FE for ; Tue, 1 Nov 2022 17:41:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231132AbiKARln (ORCPT ); Tue, 1 Nov 2022 13:41:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230122AbiKARlm (ORCPT ); Tue, 1 Nov 2022 13:41:42 -0400 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E2181C421 for ; Tue, 1 Nov 2022 10:41:41 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id i11-20020a056e02152b00b003007c106191so13750591ilu.9 for ; Tue, 01 Nov 2022 10:41:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=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=Bb5hKKxK653yOZqwzT+YH0r96wFUdTKykX4aSY0JyUY=; b=ZxAtjNpMDBjTk+nT/4mw/IX1rBCwPXm0YPloSMSmS7gWFS7RhFf9nKX+KcybFv2mwS oxkztJBPc8INsxFwNvBQJcLxL9e7TWvKa5OaUatPKqdiqlavquhYW8sQaB+Uyzmz2QP9 sR0nJZhdS5KB5j1sIC6Rho6d6eggcOGjgMGLf22jpVw1hhvqXWA97p1TRQ9YA3J1N5LR B9pOF6jhE4KvJq2YKpLsAdel1faZ8Y2fIrWEPk3/x/0DtXOPlJvN9ZN0W6yUz2LpKMpl VcwFGVv0woY5Ab8gWtm8t0fd8DtuvKggZP4jEFOoUfy1x/Jd0cY2b+OdZ4d0L/d+XmKS dcuQ== X-Gm-Message-State: ACrzQf1MVmg0BJYoRPsbObDO3NCVtySZo+Vn9DEDlQdzLwq5UYAP/zET DK2ok92E1pLPeWZ6h8ATLnn2Dl0Sjx6ZDXbCx/taI7fARgJQ X-Google-Smtp-Source: AMsMyM7OVrbwHyBaS7Ew6Lna3GtUPcbQgUA3V+xXCAIu/cgeL7HcARym+7pOewWefZuZ12686GG5gByRTew46Qn4O0yMEkdcS7ak MIME-Version: 1.0 X-Received: by 2002:a02:b383:0:b0:375:4fc8:586b with SMTP id p3-20020a02b383000000b003754fc8586bmr9713444jan.200.1667324500795; Tue, 01 Nov 2022 10:41:40 -0700 (PDT) Date: Tue, 01 Nov 2022 10:41:40 -0700 In-Reply-To: <000000000000186e6c05eb2cd12e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000986a8e05ec6c3cfb@google.com> Subject: Re: [syzbot] WARNING in btrfs_sync_log From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=168561a6880000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d3548a4365ba17d dashboard link: https://syzkaller.appspot.com/bug?extid=4406ed3884d139266b67 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1157537a880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17370ede880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/24728b72a896/disk-b229b6ca.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/10a3c40c60e1/vmlinux-b229b6ca.xz kernel image: https://storage.googleapis.com/syzbot-assets/69f963b02b7e/bzImage-b229b6ca.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/c6f695f68206/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4406ed3884d139266b67@syzkaller.appspotmail.com ------------[ cut here ]------------ BTRFS: Transaction aborted (error -12) WARNING: CPU: 0 PID: 3653 at fs/btrfs/tree-log.c:3081 btrfs_sync_log+0x1ebd/0x2d40 fs/btrfs/tree-log.c:3081 Modules linked in: CPU: 0 PID: 3653 Comm: syz-executor166 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:btrfs_sync_log+0x1ebd/0x2d40 fs/btrfs/tree-log.c:3081 Code: bb 8d 99 06 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 40 eb 19 e8 c3 92 ef fd 48 c7 c7 e0 11 dc 8a 89 de 31 c0 e8 13 31 b7 fd <0f> 0b b3 01 44 0f b6 c3 4c 89 e7 48 c7 c6 60 12 dc 8a ba 09 0c 00 RSP: 0018:ffffc9000402ee80 EFLAGS: 00010246 RAX: 0c3fac46eef79b00 RBX: 00000000fffffff4 RCX: ffff88807ac10000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000402f310 R08: ffffffff816b8dfd R09: fffff52000805d89 R10: fffff52000805d89 R11: 1ffff92000805d88 R12: ffff8880736f05e8 R13: 00000000fffffff4 R14: dffffc0000000000 R15: ffff8880736f0638 FS: 00005555555c9300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561f344b24f0 CR3: 0000000075ec1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_sync_file+0xdf4/0x1140 fs/btrfs/file.c:2242 generic_write_sync include/linux/fs.h:2883 [inline] btrfs_do_write_iter+0xa6f/0x1370 fs/btrfs/file.c:1975 do_iter_write+0x6c2/0xc20 fs/read_write.c:861 iter_file_splice_write+0x7fc/0xfc0 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0xe6/0x1c0 fs/splice.c:931 splice_direct_to_actor+0x4e4/0xc00 fs/splice.c:886 do_splice_direct+0x279/0x3d0 fs/splice.c:974 do_sendfile+0x5fb/0xf80 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4524cb5fe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdb426e408 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4524cb5fe9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007 RBP: 00007ffdb426e430 R08: 0000000000000002 R09: 00007ffdb426e440 R10: 0000000080000009 R11: 0000000000000246 R12: 0000000000000009 R13: 00007f4524cfe6c0 R14: 00007ffdb426e450 R15: 0000000000000002