BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm
BTRFS info (device loop0): using free space tree
BTRFS info (device loop0): has skinny extents
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): balance: start -s
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4592 at fs/btrfs/block-group.c:2441 btrfs_create_pending_block_groups+0xc1c/0xe50 fs/btrfs/block-group.c:2441
Modules linked in:
CPU: 0 PID: 4592 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:btrfs_create_pending_block_groups+0xc1c/0xe50 fs/btrfs/block-group.c:2441
Code: fb 19 fe eb 27 e8 94 fb 19 fe 0f 1f 44 00 00 e8 8a fb 19 fe eb 4a e8 83 fb 19 fe 48 c7 c7 c0 d2 4c 8a 44 89 fe e8 44 58 40 06 <0f> 0b 48 8b 7c 24 20 48 c7 c6 40 d3 4c 8a ba 89 09 00 00 44 89 f9
RSP: 0018:ffffc9000333f780 EFLAGS: 00010246
RAX: baadbea99bd93800 RBX: 1ffff1100ef0e50b RCX: ffff88807a559dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000333f990 R08: dffffc0000000000 R09: ffffed1017204f2c
R10: ffffed1017204f2c R11: 1ffff11017204f2b R12: ffff8880778729b0
R13: ffff888077872850 R14: ffff888077872858 R15: 00000000ffffffe4
FS:  00007f26c88d36c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055878727a950 CR3: 000000001e659000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x154/0x650 fs/btrfs/transaction.c:1016
 btrfs_inc_block_group_ro+0x59d/0x600 fs/btrfs/block-group.c:2664
 btrfs_relocate_block_group+0x418/0xd00 fs/btrfs/relocation.c:4060
 btrfs_relocate_chunk+0xaa/0x290 fs/btrfs/volumes.c:3338
 __btrfs_balance+0x1641/0x2250 fs/btrfs/volumes.c:4079
 btrfs_balance+0xd89/0x1520 fs/btrfs/volumes.c:4469
 btrfs_ioctl_balance+0x674/0x810 fs/btrfs/ioctl.c:4152
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f26c9552ea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f26c88d30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f26c9680f80 RCX: 00007f26c9552ea9
RDX: 0000000020000900 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f26c959f4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f26c9680f80 R15: 00007ffdd8d1e1f8
 </TASK>