loop0: detected capacity change from 0 to 32768
BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5317)
BTRFS info (device loop0): first mount of filesystem ed167579-eb65-4e76-9a50-61ac97e9b59d
BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm
BTRFS info (device loop0): using free-space-tree
BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
BTRFS info (device loop0): left=0, need=98304, flags=5
BTRFS info (device loop0): space_info SYSTEM 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 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 has -4096 free, is not full
BTRFS info (device loop0): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=4096, readonly=4190208 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, 4096 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (4190208 bytes available) [readonly]
BTRFS critical (device loop0): entry offset 1048576, bytes 8192, bitmap no
BTRFS critical (device loop0): entry offset 1060864, bytes 4182016, 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): 4190208 bytes available across all block groups
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5317 at fs/btrfs/volumes.c:3426 btrfs_remove_chunk+0x19ae/0x1c90 fs/btrfs/volumes.c:3426
Modules linked in:
CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
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+0x19ae/0x1c90 fs/btrfs/volumes.c:3426
Code: 48 8b 38 48 c7 c6 c0 48 6d 8c 44 89 e2 e8 0a 0e 33 fd eb 1a e8 b3 32 cd fd 90 48 c7 c7 60 48 6d 8c 44 89 e6 e8 53 ef 8c fd 90 <0f> 0b 90 90 49 bf 00 00 00 00 00 fc ff df 4c 8b 6c 24 10 e9 7e f9
RSP: 0018:ffffc9000d3bf8c0 EFLAGS: 00010246
RAX: a575b66d98dc9600 RBX: ffff88803f384001 RCX: ffff888000d44880
RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000d3bfab0 R08: ffffffff81819e52 R09: 0000000000800000
R10: 000000000003ae2e R11: fffffbfff1d3a69c R12: ffffffffffffffe4
R13: ffff88801f85e900 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f831ad606c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f830edff000 CR3: 00000000413ac000 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:3556
 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4292
 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4669
 btrfs_ioctl_balance+0x3f5/0x660 fs/btrfs/ioctl.c:3587
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8319f8d169
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:00007f831ad60038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f831a1a5fa0 RCX: 00007f8319f8d169
RDX: 0000400000000180 RSI: 00000000c4009420 RDI: 0000000000000005
RBP: 00007f831a00e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f831a1a5fa0 R15: 00007fff6e1a61a8
 </TASK>