BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop2): checking UUID tree
BTRFS info (device loop2): balance: start -d -m
BTRFS info (device loop2): relocating block group 6881280 flags data|metadata
------------[ cut here ]------------
WARNING: CPU: 1 PID: 27600 at fs/btrfs/volumes.c:3209 btrfs_remove_chunk+0x1575/0x1aa0 fs/btrfs/volumes.c:3209
Modules linked in:
CPU: 1 PID: 27600 Comm: syz-executor.2 Not tainted 5.15.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:btrfs_remove_chunk+0x1575/0x1aa0 fs/btrfs/volumes.c:3209
Code: ff e8 df e6 16 fe 4c 8b 24 24 0f 1f 44 00 00 e8 d1 e6 16 fe eb 16 e8 ca e6 16 fe 48 c7 c7 80 49 ca 8a 44 89 f6 e8 4b a1 e2 fd <0f> 0b 4c 89 e7 48 c7 c6 e0 4c ca 8a ba 89 0c 00 00 e9 90 fa ff ff
RSP: 0018:ffffc90007c6f920 EFLAGS: 00010246
RAX: 14a352b0a0f06900 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90005aa9000 RSI: 0000000000024da7 RDI: 0000000000024da8
RBP: ffffc90007c6fad8 R08: ffffffff816658fc R09: ffffed1017364f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801c7f49a0
R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff88807dcd0001
FS:  00007f4692f446c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d2cd5e7418 CR3: 0000000021c43000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x1ce/0x270 fs/btrfs/volumes.c:3326
 __btrfs_balance+0x185e/0x27c0 fs/btrfs/volumes.c:4018
 btrfs_balance+0xd40/0x14a0 fs/btrfs/volumes.c:4408
 btrfs_ioctl_balance+0x643/0x7d0 fs/btrfs/ioctl.c:4136
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f46949c2ae9
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:00007f4692f440c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4694ae1f80 RCX: 00007f46949c2ae9
RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f4694a0e47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4694ae1f80 R15: 00007fff3df22e98
 </TASK>