syzbot

BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
BTRFS warning (device loop0): Skipping commit of aborted transaction.
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2036 at 0x0, CPU#1: syz.0.17/6100
Modules linked in:
CPU: 1 UID: 0 PID: 6100 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:cleanup_transaction fs/btrfs/transaction.c:2036 [inline]
RIP: 0010:btrfs_commit_transaction+0x30ff/0x3b10 fs/btrfs/transaction.c:2629
Code: 27 36 f9 fd eb 7d e8 e0 0e df fd 84 c0 74 25 e8 17 36 f9 fd eb 6d e8 10 36 f9 fd 48 8d 3d 39 3c 1c 0b 44 8b 6c 24 38 44 89 ee <67> 48 0f b9 3a e9 24 f9 ff ff e8 c2 fb 0b 07 89 c3 31 ff 89 c6 e8
RSP: 0018:ffffc90004347500 EFLAGS: 00010293
RAX: ffffffff83c73c30 RBX: ffff88802ff4c001 RCX: ffff88801dfe3c80
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8ee37870
RBP: ffffc90004347828 R08: ffff88801dfe3c80 R09: 0000000000000003
R10: 0000000000000100 R11: 00000000fffffffb R12: 1ffff110082e200a
R13: 00000000ffffffe4 R14: 0000000000000000 R15: ffff88802ff4c000
FS:  00007f234869e6c0(0000) GS:ffff888126e06000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98c0155d30 CR3: 0000000031c92000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 prepare_to_relocate+0x3a1/0x490 fs/btrfs/relocation.c:3479
 relocate_block_group+0x132/0xd70 fs/btrfs/relocation.c:3504
 btrfs_relocate_block_group+0x580/0xba0 fs/btrfs/relocation.c:3966
 btrfs_relocate_chunk+0x12f/0x5d0 fs/btrfs/volumes.c:3424
 __btrfs_balance+0x190e/0x24f0 fs/btrfs/volumes.c:4197
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4571
 btrfs_ioctl_balance+0x3d6/0x610 fs/btrfs/ioctl.c:3525
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f234902f749
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:00007f234869e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2349285fa0 RCX: 00007f234902f749
RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f23490b3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2349286038 R14: 00007f2349285fa0 R15: 00007ffee0dd1158
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	36 f9                	ss stc
   2:	fd                   	std
   3:	eb 7d                	jmp    0x82
   5:	e8 e0 0e df fd       	call   0xfddf0eea
   a:	84 c0                	test   %al,%al
   c:	74 25                	je     0x33
   e:	e8 17 36 f9 fd       	call   0xfdf9362a
  13:	eb 6d                	jmp    0x82
  15:	e8 10 36 f9 fd       	call   0xfdf9362a
  1a:	48 8d 3d 39 3c 1c 0b 	lea    0xb1c3c39(%rip),%rdi        # 0xb1c3c5a
  21:	44 8b 6c 24 38       	mov    0x38(%rsp),%r13d
  26:	44 89 ee             	mov    %r13d,%esi
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e9 24 f9 ff ff       	jmp    0xfffff957
  33:	e8 c2 fb 0b 07       	call   0x70bfbfa
  38:	89 c3                	mov    %eax,%ebx
  3a:	31 ff                	xor    %edi,%edi
  3c:	89 c6                	mov    %eax,%esi
  3e:	e8                   	.byte 0xe8