syzbot
WARNING in btrfs_commit_transaction
Status:
auto-obsoleted due to no activity on 2026/05/03 02:57
Reported-by: syzbot+f98a03ab65ae4389e567@syzkaller.appspotmail.com
First crash: 395d, last: 183d
Sample crash report:
BTRFS info (device loop7): enabling ssd optimizations
BTRFS warning (device loop7: state M): Skipping commit of aborted transaction.
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 14650 at fs/btrfs/transaction.c:2004 cleanup_transaction fs/btrfs/transaction.c:2004 [inline]
WARNING: CPU: 0 PID: 14650 at fs/btrfs/transaction.c:2004 btrfs_commit_transaction+0x2f2d/0x37c0 fs/btrfs/transaction.c:2587
Modules linked in:
CPU: 0 PID: 14650 Comm: syz.7.1599 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:cleanup_transaction fs/btrfs/transaction.c:2004 [inline]
RIP: 0010:btrfs_commit_transaction+0x2f2d/0x37c0 fs/btrfs/transaction.c:2587
Code: fe be 01 00 00 00 4c 89 ef e8 7f 21 aa 00 e9 fe d6 ff ff e8 15 ef 07 fe 48 c7 c7 40 07 0d 8b 8b 5c 24 30 89 de e8 63 b3 d1 fd <0f> 0b e9 6c f9 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 23 d2 ff
RSP: 0018:ffffc9000cf877c0 EFLAGS: 00010246
RAX: 9ec97bf117888100 RBX: 00000000ffffffe4 RCX: 0000000000080000
RDX: ffffc9000c249000 RSI: 0000000000011f0f RDI: 0000000000011f10
RBP: ffffc9000cf87ae8 R08: ffffc9000cf873c7 R09: 1ffff920019f0e78
R10: dffffc0000000000 R11: fffff520019f0e79 R12: ffff88802e4e51f8
R13: ffff8880282e6c68 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f4f4f66b6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf4bea0291 CR3: 000000004da73000 CR4: 00000000003506f0
Call Trace:
<TASK>
btrfs_set_free_space_cache_v1_active+0x71/0x1c0 fs/btrfs/free-space-cache.c:4151
btrfs_remount_cleanup fs/btrfs/super.c:1684 [inline]
btrfs_remount+0x1085/0x1530 fs/btrfs/super.c:1861
reconfigure_super+0x21e/0x8a0 fs/super.c:1151
do_remount fs/namespace.c:2927 [inline]
path_mount+0xd2f/0xff0 fs/namespace.c:3705
do_mount fs/namespace.c:3726 [inline]
__do_sys_mount fs/namespace.c:3935 [inline]
__se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4f4e79bf4a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4f4f66ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4f4f66aee0 RCX: 00007f4f4e79bf4a
RDX: 0000200000000180 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 0000200000000180 R08: 00007f4f4f66aee0 R09: 0000000002042023
R10: 0000000002042023 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f4f4f66aea0 R14: 0000000000000000 R15: 00002000000002c0
</TASK>
* Struck through repros no longer work on HEAD.