BTRFS info (device loop3): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop3): delayed_refs_rsv: size 0 reserved 0
BTRFS info (device loop3): relocating block group 1048576 flags system
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6995 at fs/btrfs/relocation.c:4141 btrfs_relocate_block_group+0xc6a/0xd00 fs/btrfs/relocation.c:4141
Modules linked in:
CPU: 0 PID: 6995 Comm: syz.3.592 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:btrfs_relocate_block_group+0xc6a/0xd00 fs/btrfs/relocation.c:4141
Code: 24 e9 75 f9 ff ff e8 c5 11 28 fe 48 8b 2c 24 4c 8b 6c 24 38 e9 76 f9 ff ff e8 b2 11 28 fe 0f 0b e9 24 ff ff ff e8 a6 11 28 fe <0f> 0b e9 74 ff ff ff e8 9a 11 28 fe 0f 0b eb c3 44 89 f9 80 e1 07
RSP: 0018:ffffc9000313fa40 EFLAGS: 00010283
RAX: ffffffff834fb97a RBX: ffff8880614bc010 RCX: 0000000000080000
RDX: ffffc9000e069000 RSI: 000000000003e531 RDI: 000000000003e532
RBP: 00000000003fe000 R08: dffffc0000000000 R09: fffff52000627f39
R10: fffff52000627f39 R11: 1ffff92000627f38 R12: 0000000000000000
R13: 1ffff1100f3fb800 R14: ffff8880614bc000 R15: ffff888079fdc000
FS:  00007fb87f0936c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f56a4ace000 CR3: 0000000070991000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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: 0033:0x7fb880e2bc29
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:00007fb87f093038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb881072fa0 RCX: 00007fb880e2bc29
RDX: 0000200000000200 RSI: 00000000c4009420 RDI: 0000000000000005
RBP: 00007fb880eaee41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb881073038 R14: 00007fb881072fa0 R15: 00007ffeb40b2258
 </TASK>