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WARNING in lookup_inline_extent_backref

Status: upstream: reported C repro on 2022/12/05 08:13
Labels: btrfs (incorrect?)
Reported-by: syzbot+d6f9ff86c1d804ba2bc6@syzkaller.appspotmail.com
First crash: 185d, last: 2d14h

Cause bisection: failed (error log, bisect log)
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly btrfs report (May 2023) 0 (1) 2023/05/30 08:21
[syzbot] Monthly btrfs report (Apr 2023) 0 (1) 2023/04/27 10:13
[syzbot] [btrfs] Monthly Report 1 (2) 2023/03/27 13:42
[syzbot] WARNING in lookup_inline_extent_backref 0 (1) 2022/12/05 08:13
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in lookup_inline_extent_backref 1 66d 66d 0/3 upstream: reported on 2023/04/01 08:16

Sample crash report:
BTRFS info (device loop0): balance: start -d -m -s
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5117 at fs/btrfs/extent-tree.c:871 lookup_inline_extent_backref+0x8e8/0x1470
Modules linked in:
CPU: 0 PID: 5117 Comm: syz-executor611 Not tainted 6.3.0-syzkaller-13390-g2e1e1337881b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:lookup_inline_extent_backref+0x8e8/0x1470 fs/btrfs/extent-tree.c:871
Code: de e8 7c bb 07 fe 49 39 df 0f 87 4b 0b 00 00 e8 5e b9 07 fe eb 30 83 7d 28 00 4c 8b 6c 24 30 0f 84 11 05 00 00 e8 48 b9 07 fe <0f> 0b 41 bc fb ff ff ff e9 52 06 00 00 e8 36 b9 07 fe e9 29 06 00
RSP: 0018:ffffc900040eea00 EFLAGS: 00010293
RAX: ffffffff8383adf8 RBX: 0000000000000000 RCX: ffff88801f4ed940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900040eebb0 R08: ffffffff8383a963 R09: 0000000000000000
R10: ffffc900040ee760 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88802b2e4370 R14: ffffc900040eeb20 R15: ffff88807a0fc000
FS:  00007f0193501700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000001e6bd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 insert_inline_extent_backref+0xe6/0x250 fs/btrfs/extent-tree.c:1158
 __btrfs_inc_extent_ref+0x123/0x5f0 fs/btrfs/extent-tree.c:1461
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1952 [inline]
 __btrfs_run_delayed_refs+0x1176/0x3fc0 fs/btrfs/extent-tree.c:2013
 btrfs_run_delayed_refs+0x2f9/0x480 fs/btrfs/extent-tree.c:2125
 qgroup_account_snapshot+0xce/0x360 fs/btrfs/transaction.c:1545
 create_pending_snapshot+0x1244/0x28f0 fs/btrfs/transaction.c:1818
 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1888
 btrfs_commit_transaction+0x12f5/0x3370 fs/btrfs/transaction.c:2358
 prepare_to_relocate+0x3c5/0x4c0 fs/btrfs/relocation.c:3600
 relocate_block_group+0x17f/0xce0 fs/btrfs/relocation.c:3625
 btrfs_relocate_block_group+0x7ab/0xd70 fs/btrfs/relocation.c:4087
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3275
 __btrfs_balance+0x1b06/0x2690 fs/btrfs/volumes.c:4010
 btrfs_balance+0xbdb/0x1120 fs/btrfs/volumes.c:4394
 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3597
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f019a976ac9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f01935012f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f019aa017f0 RCX: 00007f019a976ac9
RDX: 0000000020022300 RSI: 00000000c4009420 RDI: 0000000000000008
RBP: 00007f019a9ce26c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 00007f019a9cd270 R14: 61635f7261656c63 R15: 00007f019aa017f8
 </TASK>

Crashes (197):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/05/06 16:58 upstream 2e1e1337881b 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in lookup_inline_extent_backref
2023/03/29 12:22 upstream fcd476ea6a88 fc067f05 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in lookup_inline_extent_backref
2022/12/29 04:42 upstream 1b929c02afd3 44712fbc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in lookup_inline_extent_backref
2022/12/18 20:03 upstream f9ff5644bcc0 05494336 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in lookup_inline_extent_backref
2022/12/03 04:58 upstream a4412fdd49dc e080de16 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/01/22 17:57 linux-next d514392f17fd 559a440a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in lookup_inline_extent_backref
2023/01/15 15:39 linux-next 0a093b2893c7 a63719e7 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in lookup_inline_extent_backref
2023/06/04 05:15 upstream 51f269a6ecc7 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/06/04 00:21 upstream 51f269a6ecc7 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/06/03 12:08 upstream 4ecd704a4c51 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/06/02 23:37 upstream c43a6ff9f93f a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/06/02 06:21 upstream 1874a42a7d74 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/31 09:39 upstream afead42fdfca 09898419 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/30 00:13 upstream 8b817fded42d cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/25 19:18 upstream 933174ae28ba 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/24 10:35 upstream 27e462c8fad4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/23 19:40 upstream ae8373a5add4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/21 17:31 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/21 12:31 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in lookup_inline_extent_backref
2023/05/19 21:56 upstream cbd6ac3837cd 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/18 02:47 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/17 21:13 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/17 11:28 upstream f1fcbaa18b28 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/17 09:21 upstream f1fcbaa18b28 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/16 10:45 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/16 08:55 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/16 02:48 upstream f1fcbaa18b28 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/13 19:31 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/13 15:30 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/09 10:45 upstream ba0ad6ed89fd c7a5e2a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/08 17:04 upstream ac9a78681b92 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/06 02:38 upstream 7163a2111f6c de870ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/05 09:43 upstream 78b421b6a7c6 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/04 22:01 upstream 1a5304fecee5 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/04 10:14 upstream fa31fc82fb77 5b7ff9dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/03 14:33 upstream 348551ddaf31 b5918830 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/03 07:00 upstream 7df047b3f0aa 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/02 03:58 upstream c8c655c34e33 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/01 17:29 upstream 58390c8ce1bd 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/29 17:19 upstream 89d77f71f493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/27 09:02 upstream 5c7ecada25d2 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/26 16:43 upstream 0cfd8703e7da 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/26 16:42 upstream 0cfd8703e7da 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/26 12:17 upstream 0cfd8703e7da 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/24 06:21 upstream 457391b03803 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/23 14:05 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/22 21:55 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/22 10:31 upstream 8e41e0a57566 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/21 22:47 upstream 2af3e53a4dc0 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/21 17:57 upstream 2af3e53a4dc0 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/21 06:41 upstream 6a66fdd29ea1 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/20 21:16 upstream cb0856346a60 a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/20 19:28 upstream cb0856346a60 a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/20 06:21 upstream 789b4a41c247 a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/19 11:54 upstream af67688dca57 94b4184e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/04/19 03:53 upstream af67688dca57 d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/03/31 23:21 upstream 5a57b48fdfcb f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in lookup_inline_extent_backref
2022/12/03 01:19 upstream a4412fdd49dc e080de16 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in lookup_inline_extent_backref
2023/05/17 00:08 linux-next 715abedee4cd 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in lookup_inline_extent_backref
* Struck through repros no longer work on HEAD.