loop0: detected capacity change from 0 to 32768
BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5351)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c (crc32c-lib) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): balance: start -s
BTRFS info (device loop0): relocating block group 1048576 flags system
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5351 at fs/btrfs/volumes.c:3360 btrfs_remove_chunk+0x1a3c/0x2100 fs/btrfs/volumes.c:3360
Modules linked in:
CPU: 0 UID: 0 PID: 5351 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-12256-g561c80369df0 #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:btrfs_remove_chunk+0x1a3c/0x2100 fs/btrfs/volumes.c:3360
Code: d2 fd 84 c0 0f 84 6e 01 00 00 e8 0f 37 ec fd e9 c6 03 00 00 e8 05 37 ec fd 90 48 c7 c7 a0 7a ce 8b 44 89 ee e8 c5 c5 af fd 90 <0f> 0b 90 90 e9 fa f7 ff ff e8 e6 36 ec fd eb 05 e8 df 36 ec fd e8
RSP: 0018:ffffc9000d35f8c0 EFLAGS: 00010246
RAX: 986384a149018600 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e13a000 RSI: 00000000000260e1 RDI: 00000000000260e2
RBP: ffffc9000d35fab0 R08: ffff88801fc24253 R09: 1ffff11003f8484a
R10: dffffc0000000000 R11: ffffed1003f8484b R12: dffffc0000000000
R13: ffffffffffffffe4 R14: ffff888053048001 R15: ffff888043b3ab90
FS:  00007f2f72ebe6c0(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fde0d29e000 CR3: 0000000042f97000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x29b/0x5c0 fs/btrfs/volumes.c:3491
 __btrfs_balance+0x1860/0x23f0 fs/btrfs/volumes.c:4222
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4599
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3577
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
 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: 0033:0x7f2f71f8ebe9
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:00007f2f72ebe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2f721b5fa0 RCX: 00007f2f71f8ebe9
RDX: 00002000000008c0 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f2f72011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2f721b6038 R14: 00007f2f721b5fa0 R15: 00007fff73a4a978
 </TASK>