loop0: detected capacity change from 0 to 4096
ntfs3: Bad value for 'dmask'
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 (5359)
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): enabling ssd optimizations
BTRFS info (device loop0): enabling 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 8249344 free, is not full
BTRFS info (device loop0): space_info total=12451840, used=4096, pinned=0, reserved=0, 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: 5359 at fs/btrfs/volumes.c:3365 btrfs_remove_chunk+0x1a3c/0x2100 fs/btrfs/volumes.c:3365
Modules linked in:
CPU: 0 UID: 0 PID: 5359 Comm: syz.0.0 Not tainted syzkaller #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:3365
Code: d2 fd 84 c0 0f 84 6e 01 00 00 e8 cf b9 eb fd e9 c6 03 00 00 e8 c5 b9 eb fd 90 48 c7 c7 20 83 ee 8b 44 89 ee e8 d5 46 af fd 90 <0f> 0b 90 90 e9 fa f7 ff ff e8 a6 b9 eb fd eb 05 e8 9f b9 eb fd e8
RSP: 0018:ffffc9000d5678c0 EFLAGS: 00010246
RAX: 0ce1cb1c61b0ab00 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000df02000 RSI: 0000000000032071 RDI: 0000000000032072
RBP: ffffc9000d567ab0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3a22c R12: dffffc0000000000
R13: ffffffffffffffe4 R14: ffff888052e54001 R15: ffff888043b1db90
FS:  00007f5c5b6b66c0(0000) GS:ffff88808d007000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c5b672ff0 CR3: 0000000043422000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x29b/0x5c0 fs/btrfs/volumes.c:3496
 __btrfs_balance+0x1860/0x23f0 fs/btrfs/volumes.c:4227
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4604
 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: 0033:0x7f5c5a78eec9
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:00007f5c5b6b6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5c5a9e5fa0 RCX: 00007f5c5a78eec9
RDX: 0000200000000200 RSI: 00000000c4009420 RDI: 0000000000000006
RBP: 00007f5c5a811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5c5a9e6038 R14: 00007f5c5a9e5fa0 R15: 00007fffd30e73c8
 </TASK>