BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
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: CPU: 0 PID: 5328 at fs/btrfs/transaction.c:2020 cleanup_transaction fs/btrfs/transaction.c:2020 [inline]
WARNING: CPU: 0 PID: 5328 at fs/btrfs/transaction.c:2020 btrfs_commit_transaction+0x2f67/0x3950 fs/btrfs/transaction.c:2611
Modules linked in:
CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:cleanup_transaction fs/btrfs/transaction.c:2020 [inline]
RIP: 0010:btrfs_commit_transaction+0x2f67/0x3950 fs/btrfs/transaction.c:2611
Code: 2f 14 d8 fd 84 c0 74 2b e8 f6 d7 f1 fd eb 73 e8 ef d7 f1 fd 90 48 c7 c7 00 78 ae 8b 8b 5c 24 18 89 de e8 1c e4 b4 fd 89 d9 90 <0f> 0b 90 90 e9 1a 01 00 00 e8 2b 1d 7a 07 89 c3 31 ff 89 c6 e8 00
RSP: 0018:ffffc9000d32f4e0 EFLAGS: 00010246
RAX: ab6d24e74aa1e500 RBX: 00000000ffffffe4 RCX: 00000000ffffffe4
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000d32f808 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba684 R12: ffff888000615bb8
R13: ffff888051818000 R14: ffff888051818000 R15: 0000000000000000
FS:  00007fcedba286c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffceeef2ff8 CR3: 0000000042670000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 prepare_to_relocate+0x39f/0x490 fs/btrfs/relocation.c:3489
 relocate_block_group+0x132/0xd70 fs/btrfs/relocation.c:3514
 btrfs_relocate_block_group+0x6bc/0xc60 fs/btrfs/relocation.c:3983
 btrfs_relocate_chunk+0x12f/0x5c0 fs/btrfs/volumes.c:3451
 __btrfs_balance+0x1860/0x23f0 fs/btrfs/volumes.c:4227
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4604
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3577
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcedab8f6c9
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:00007fcedba28038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcedade5fa0 RCX: 00007fcedab8f6c9
RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000005
RBP: 00007fcedac11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcedade6038 R14: 00007fcedade5fa0 R15: 00007ffceeef3b88
 </TASK>