syzbot


WARNING in btrfs_create_pending_block_groups

Status: upstream: reported C repro on 2025/06/26 23:16
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+c14787f64c14bb933980@syzkaller.appspotmail.com
First crash: 56d, last: 2h10m
Bug presence (1)
Date Name Commit Repro Result
2025/07/04 upstream (ToT) 4c06e63b9203 C [report] WARNING in btrfs_create_pending_block_groups
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in btrfs_create_pending_block_groups origin:upstream missing-backport -1 C inconclusive 352 3h00m 739d 0/3 upstream: reported C repro on 2023/08/13 16:14
upstream WARNING in btrfs_create_pending_block_groups (2) btrfs -1 C done 983 10h09m 336d 0/29 upstream: reported C repro on 2024/09/19 23:50
upstream WARNING in btrfs_create_pending_block_groups btrfs -1 C error done 64 594d 998d 0/29 auto-obsoleted due to no activity on 2024/05/26 09:44
linux-5.15 WARNING in btrfs_create_pending_block_groups missing-backport origin:upstream -1 C done 294 2h32m 786d 0/3 upstream: reported C repro on 2023/06/28 06:17

Sample crash report:
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): balance: start -susage=34359738372,drange=7..2048,limit=0..6
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5940 at fs/btrfs/block-group.c:2753 btrfs_create_pending_block_groups+0xe10/0xf20 fs/btrfs/block-group.c:2753
Modules linked in:
CPU: 0 PID: 5940 Comm: syz.0.16 Not tainted 6.6.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:btrfs_create_pending_block_groups+0xe10/0xf20 fs/btrfs/block-group.c:2753
Code: fa d1 6b 8c ba c8 0a 00 00 44 89 e1 e8 b9 ec cc 06 e9 19 f6 ff ff e8 8f 27 ed fd 48 c7 c7 40 06 ef 8a 44 89 e6 e8 e0 8b b7 fd <0f> 0b e9 79 fe ff ff e8 74 27 ed fd 48 c7 c7 40 06 ef 8a 44 89 ee
RSP: 0018:ffffc90003237740 EFLAGS: 00010246
RAX: 964e413ee559f500 RBX: 0000000000000000 RCX: ffff888026d08000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90003237988 R08: ffffc90003237347 R09: 1ffff92000646e68
R10: dffffc0000000000 R11: fffff52000646e69 R12: 00000000ffffffe4
R13: ffff88802c9a7850 R14: ffff88802c9a7858 R15: ffff88802eac4001
FS:  000055557a49e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2be5ffff CR3: 0000000075615000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x140/0x630 fs/btrfs/transaction.c:1023
 btrfs_inc_block_group_ro+0x596/0x630 fs/btrfs/block-group.c:3014
 btrfs_relocate_block_group+0x452/0xd70 fs/btrfs/relocation.c:4013
 btrfs_relocate_chunk+0x12a/0x3b0 fs/btrfs/volumes.c:3321
 __btrfs_balance+0x187b/0x21c0 fs/btrfs/volumes.c:4067
 btrfs_balance+0xcb1/0x11c0 fs/btrfs/volumes.c:4444
 btrfs_ioctl_balance+0x4a2/0x730 fs/btrfs/ioctl.c:3647
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f205918e929
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff22d6ea08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f20593b5fa0 RCX: 00007f205918e929
RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f2059210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f20593b5fa0 R14: 00007f20593b5fa0 R15: 0000000000000003
 </TASK>

Crashes (35):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/13 21:21 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/12 22:00 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/02 21:53 linux-6.6.y 3f5b4c104b7d bc80e4f0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/22 11:33 linux-6.6.y bb9c90ab9c5a bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/22 11:33 linux-6.6.y bb9c90ab9c5a bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/22 11:32 linux-6.6.y bb9c90ab9c5a bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/22 11:23 linux-6.6.y bb9c90ab9c5a bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/22 11:23 linux-6.6.y bb9c90ab9c5a bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/04 01:31 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/03 21:43 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/03 21:43 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/02 20:39 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/02 20:39 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/01 20:00 linux-6.6.y 3a8ababb8b6a 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/08/01 20:00 linux-6.6.y 3a8ababb8b6a 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/29 00:18 linux-6.6.y dbcb8d8e4163 6654ea9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/29 00:15 linux-6.6.y dbcb8d8e4163 6654ea9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/29 00:11 linux-6.6.y dbcb8d8e4163 6654ea9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/21 19:45 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/17 07:22 linux-6.6.y 9247f4e6573a 44f8051e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/17 07:22 linux-6.6.y 9247f4e6573a 44f8051e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/13 20:35 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/13 08:06 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/13 08:03 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/12 21:31 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/12 08:48 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/12 08:48 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/05 01:37 linux-6.6.y 3f5b4c104b7d d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/05 01:37 linux-6.6.y 3f5b4c104b7d d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/02 21:20 linux-6.6.y 3f5b4c104b7d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/02 21:19 linux-6.6.y 3f5b4c104b7d bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/01 03:46 linux-6.6.y 3f5b4c104b7d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/01 03:46 linux-6.6.y 3f5b4c104b7d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/07/01 03:45 linux-6.6.y 3f5b4c104b7d 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
2025/06/26 23:15 linux-6.6.y 6282921b6825 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in btrfs_create_pending_block_groups
* Struck through repros no longer work on HEAD.