loop0: detected capacity change from 0 to 131072
F2FS-fs (loop0): quotafile must be on filesystem root
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 (5329)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c (crc32c-x86_64) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): balance: start -s
BTRFS info (device loop0): left=0, need=98304, flags=2
BTRFS info (device loop0): space_info SYSTEM (sub-group id 0) has 0 free, is not full
BTRFS info (device loop0): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=4190208 zone_unusable=0
BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1441792
BTRFS info (device loop0): trans_block_rsv: size 0 reserved 0
BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_refs_rsv: size 0 reserved 0
BTRFS info (device loop0): relocating block group 1048576 flags system
BTRFS info (device loop0): left=0, need=98304, flags=2
BTRFS info (device loop0): space_info SYSTEM (sub-group id 0) has 0 free, is not full
BTRFS info (device loop0): space_info total=12451840, used=4096, pinned=0, reserved=8253440, may_use=0, readonly=4194304 zone_unusable=0
BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1437696
BTRFS info (device loop0): trans_block_rsv: size 262144 reserved 262144
BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_refs_rsv: size 524288 reserved 524288
BTRFS error (device loop0): allocation failed flags 2, wanted 4096 tree-log 0, relocation: 0
BTRFS info (device loop0): space_info SYSTEM (sub-group id 0) has -4096 free, is not full
BTRFS info (device loop0): space_info total=12451840, used=4096, pinned=0, reserved=8253440, may_use=4096, readonly=4194304 zone_unusable=0
BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1437696
BTRFS info (device loop0): trans_block_rsv: size 262144 reserved 262144
BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_refs_rsv: size 524288 reserved 524288
BTRFS info (device loop0): block group 1048576 has 4194304 bytes, 0 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (4194304 bytes available) [readonly]
BTRFS critical (device loop0): entry offset 1048576, bytes 4194304, bitmap no
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): block group 8519680 has 8257536 bytes, 4096 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (8253440 bytes available) 
BTRFS critical (device loop0): entry offset 8523776, bytes 8253440, bitmap no
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): 12447744 bytes available across all block groups
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5329 at fs/btrfs/volumes.c:3346 btrfs_remove_chunk+0x15e8/0x1970 fs/btrfs/volumes.c:3346
Modules linked in:
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00236-g8c6bc74c7f89 #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+0x15e8/0x1970 fs/btrfs/volumes.c:3346
Code: 24 18 48 8b 38 48 c7 c6 c0 3a ce 8b 89 da e8 5f 71 5a fd eb 19 e8 68 b4 f0 fd 90 48 c7 c7 60 3a ce 8b 89 de e8 19 5f b4 fd 90 <0f> 0b 90 90 49 bd 00 00 00 00 00 fc ff df e9 96 fa ff ff e8 40 b4
RSP: 0018:ffffc9000d6978c0 EFLAGS: 00010246
RAX: 680f53446f61ba00 RBX: ffffffffffffffe4 RCX: ffff888000b5c880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000d697ab0 R08: ffff88801fc24293 R09: 1ffff11003f84852
R10: dffffc0000000000 R11: ffffed1003f84853 R12: 1ffff1100853b587
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805205c001
FS:  00007fa045f8c6c0(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563b3e8a35f8 CR3: 000000004441c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x292/0x3b0 fs/btrfs/volumes.c:3476
 __btrfs_balance+0x1870/0x21d0 fs/btrfs/volumes.c:4206
 btrfs_balance+0xc94/0x11d0 fs/btrfs/volumes.c:4583
 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+0xf9/0x170 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: 0033:0x7fa04518e929
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:00007fa045f8c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa0453b5fa0 RCX: 00007fa04518e929
RDX: 0000200000000200 RSI: 00000000c4009420 RDI: 0000000000000005
RBP: 00007fa045210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa0453b5fa0 R15: 00007ffea295cb08
 </TASK>