syzbot

BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 1 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): 3215360 bytes available across all block groups
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BTRFS: Transaction aborted (error -28)
WARNING: CPU: 1 PID: 5841 at fs/btrfs/block-group.c:2781 btrfs_create_pending_block_groups+0x1120/0x1360 fs/btrfs/block-group.c:2781
Modules linked in:
CPU: 1 UID: 0 PID: 5841 Comm: syz-executor145 Not tainted 6.16.0-rc6-syzkaller-00037-ge2291551827f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:btrfs_create_pending_block_groups+0x1120/0x1360 fs/btrfs/block-group.c:2781
Code: 48 c7 c6 40 ac cf 8b 44 89 f2 e8 ab 97 44 fd e9 38 fe ff ff e8 71 a7 da fd 90 48 c7 c7 e0 ab cf 8b 44 89 f6 e8 71 8a 9e fd 90 <0f> 0b 90 90 e9 19 fe ff ff e8 52 a7 da fd eb 05 e8 4b a7 da fd 4c
RSP: 0018:ffffc90003f2f6e0 EFLAGS: 00010246
RAX: f93583c83a3af200 RBX: ffff88801ebbc001 RCX: ffff888078463c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90003f2f958 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfaa6c R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000ffffffe4 R15: ffff888035503858
FS:  000055555c1e1380(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28ab4710f8 CR3: 00000000721be000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x140/0x640 fs/btrfs/transaction.c:1071
 btrfs_inc_block_group_ro+0x641/0x6f0 fs/btrfs/block-group.c:3077
 btrfs_relocate_block_group+0x47a/0xde0 fs/btrfs/relocation.c:3962
 btrfs_relocate_chunk+0x12a/0x3b0 fs/btrfs/volumes.c:3437
 __btrfs_balance+0x1870/0x21d0 fs/btrfs/volumes.c:4212
 btrfs_balance+0xc94/0x11d0 fs/btrfs/volumes.c:4589
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3583
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28ab3f4d69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007ffcf9607688 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f28ab3f4d69
RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 000055555c1e24c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>