syzbot


WARNING in btrfs_create_pending_block_groups (2)

Status: upstream: reported C repro on 2024/09/19 23:50
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+b0643a1387dac0572b27@syzkaller.appspotmail.com
First crash: 193d, last: 16h58m
Cause bisection: introduced by (bisect log) :
commit b2f78e88052bc0bee56bbf646d245fcfb431a873
Author: David Sterba <dsterba@suse.com>
Date: Thu Jul 22 18:54:37 2021 +0000

  btrfs: allow degenerate raid0/raid10

Crash: WARNING in btrfs_create_pending_block_groups (log)
Repro: C syz .config
  
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly btrfs report (Mar 2025) 0 (1) 2025/03/22 18:47
[syzbot] Monthly btrfs report (Feb 2025) 0 (1) 2025/02/19 12:35
[syzbot] [btrfs?] WARNING in btrfs_create_pending_block_groups (2) 0 (1) 2024/09/19 23:50
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in btrfs_create_pending_block_groups origin:upstream missing-backport C inconclusive 200 22h50m 592d 0/3 upstream: reported C repro on 2023/08/13 16:14
upstream WARNING in btrfs_create_pending_block_groups btrfs C error done 64 447d 850d 0/28 auto-obsoleted due to no activity on 2024/05/26 09:44
linux-5.15 WARNING in btrfs_create_pending_block_groups origin:upstream missing-backport C done 169 23h13m 639d 0/3 upstream: reported C repro on 2023/06/28 06:17
Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/10/16 11:39 12m retest repro upstream report log
2024/10/02 11:21 16m retest repro upstream report log

Sample crash report:
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): balance: start -s
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5819 at fs/btrfs/block-group.c:2747 btrfs_create_pending_block_groups+0x14e9/0x17b0 fs/btrfs/block-group.c:2747
Modules linked in:
CPU: 0 UID: 0 PID: 5819 Comm: syz-executor304 Not tainted 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:btrfs_create_pending_block_groups+0x14e9/0x17b0 fs/btrfs/block-group.c:2747
Code: 48 c7 c6 a0 97 6e 8c 44 89 e2 e8 12 e7 1b fd e9 1e fe ff ff e8 28 f0 b5 fd 90 48 c7 c7 40 97 6e 8c 44 89 e6 e8 08 ac 75 fd 90 <0f> 0b 90 90 e9 ff fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c cb ed ff
RSP: 0018:ffffc9000401f6a0 EFLAGS: 00010246
RAX: b036aceda9b67000 RBX: 0000000000000000 RCX: ffff88807b873c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000401f960 R08: ffffffff81817d42 R09: 1ffff92000803e70
R10: dffffc0000000000 R11: fffff52000803e71 R12: 00000000ffffffe4
R13: dffffc0000000000 R14: 1ffff11004fcc914 R15: ffff888027e649c0
FS:  0000555584060380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff34bb6fe0 CR3: 0000000077ec4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x150/0x630 fs/btrfs/transaction.c:1064
 btrfs_inc_block_group_ro+0x648/0x700 fs/btrfs/block-group.c:3038
 btrfs_relocate_block_group+0x440/0xd90 fs/btrfs/relocation.c:3963
 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3511
 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4292
 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4669
 btrfs_ioctl_balance+0x3f5/0x660 fs/btrfs/ioctl.c:3587
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9dd43d3989
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007ffead112ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffead113098 RCX: 00007f9dd43d3989
RDX: 0000400000000c40 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f9dd444b610 R08: 00000000000051a5 R09: 00007ffead113098
R10: 00007ffead112d80 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffead113088 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (535):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/04 20:54 upstream 99fa936e8e4f c3901742 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/04 20:29 upstream 99fa936e8e4f c3901742 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/04 20:03 upstream 99fa936e8e4f c3901742 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/21 11:00 upstream 95ec54a420b8 6e87cfa2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/21 10:43 upstream 95ec54a420b8 6e87cfa2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/21 02:49 upstream 100ceb4817a2 6e87cfa2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/21 02:29 upstream 100ceb4817a2 6e87cfa2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/20 09:47 upstream ffd294d346d1 f2cb035c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/18 10:37 upstream 595523945be0 f2cb035c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/18 04:48 upstream 595523945be0 f2cb035c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/01 08:09 upstream ccb98ccef0e5 d3ccff63 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/01/01 07:48 upstream ccb98ccef0e5 d3ccff63 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2024/12/04 01:53 upstream ceb8bf2ceaa7 b50eb251 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2024/11/19 01:12 upstream 23acd177540d 571351cb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2024/11/18 06:34 upstream adc218676eef cfe3a04a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2024/09/15 23:46 upstream d42f7708e27c 08d8a733 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/22 11:04 upstream 88d324e69ea9 c6512ef7 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/18 19:25 upstream 76b6905c11fd 22a6c2b1 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2024/11/03 18:03 upstream 3e5e6c9900c3 f00eed24 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2024/09/18 11:13 upstream 2f27fce67173 c673ca06 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/01/12 22:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 6251d1776bc5 6dbc6a9b .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/01/09 13:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 577490b6abb9 f3558dbf .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/27 13:47 upstream 1e1ba8d23dae 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/16 12:32 upstream 31d7109a19f6 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/13 05:12 upstream 0fed89a961ea 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/08 08:46 upstream 21e4543a2e2f 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in btrfs_create_pending_block_groups
2025/03/07 10:39 upstream 0f52fd4f67c6 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/06 15:47 upstream 848e07631744 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in btrfs_create_pending_block_groups
2025/03/05 02:48 upstream 48a5eed9ad58 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in btrfs_create_pending_block_groups
2025/03/04 07:57 upstream 99fa936e8e4f c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/03 11:46 upstream 7eb172143d55 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/02 23:17 upstream b91872c56940 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/02 11:52 upstream ece144f151ac c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/03/01 14:37 upstream 7a5668899f54 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/01 09:27 upstream 7a5668899f54 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in btrfs_create_pending_block_groups
2025/03/01 05:49 upstream 7a5668899f54 67cf5345 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/02/27 03:17 upstream 5394eea10651 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/02/25 06:50 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/02/25 05:44 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_create_pending_block_groups
2025/02/24 08:50 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in btrfs_create_pending_block_groups
2025/03/27 07:31 upstream f6e0150b2003 20510e88 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/17 23:18 upstream 4701f33a1070 489e2dc8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/16 22:06 upstream cb82ca153949 e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/16 08:54 upstream eb88e6bfbc0a e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/15 19:26 upstream 3571e8b091f4 e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/12 23:15 upstream 0fed89a961ea 1a5d9317 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/10 05:23 upstream 80e54e84911a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/08 17:36 upstream 2a520073e74f 7e3bd60d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/08 12:12 upstream 21e4543a2e2f 7e3bd60d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/08 04:18 upstream 21e4543a2e2f 7e3bd60d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/07 14:46 upstream 00a7d39898c8 7e3bd60d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/07 05:07 upstream f315296c92fd 831e3629 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/06 13:29 upstream 848e07631744 831e3629 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/03 11:48 upstream 7eb172143d55 c3901742 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/01 07:44 upstream 276f98efb64a 67cf5345 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/03/01 05:53 upstream 276f98efb64a 67cf5345 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/02/28 16:19 upstream 76544811c850 1e7a43e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_create_pending_block_groups
2025/02/25 07:19 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in btrfs_create_pending_block_groups
2025/03/26 04:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a2392f333575 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/23 01:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a2392f333575 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/19 06:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b5737d35364f 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/13 03:11 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 78e3fd2b7e4b 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/06 14:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 14d05f12084d 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/03/05 00:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e056da87c780 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/02/28 04:31 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 017f704fbfb1 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/02/26 06:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a1c24ab82279 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/02/25 13:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a1c24ab82279 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/02/25 06:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a1c24ab82279 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
2025/02/24 20:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a1c24ab82279 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_create_pending_block_groups
* Struck through repros no longer work on HEAD.