BTRFS info (device loop0): balance: start -sconvert=raid0,soft BTRFS info (device loop0): left=0, need=98304, flags=10 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): space_info DATA+METADATA (sub-group id 0) has 135168 free, is full BTRFS info (device loop0): space_info total=3276800, used=61440, pinned=0, reserved=1642496, may_use=1437696, readonly=0 zone_unusable=0 BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1437696 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 262144 reserved 0 BTRFS info (device loop0): space_info DATA+METADATA (sub-group id 0) has 135168 free, is full BTRFS info (device loop0): space_info total=3276800, used=61440, pinned=0, reserved=1646592, may_use=1433600, readonly=0 zone_unusable=0 BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1433600 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 524288 reserved 0 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 1273856 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 425984 reserved 163840 BTRFS error (device loop0): allocation failed flags 10, 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 1273856 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 425984 reserved 163840 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 8253440 reserved 0 delalloc 0 super 0 zone_unusable (0 bytes available) 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): 4194304 bytes available across all block groups ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 5346 at fs/btrfs/volumes.c:3352 btrfs_remove_chunk+0x1758/0x1ae0 fs/btrfs/volumes.c:3352 Modules linked in: CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00025-gd006330be3f7 #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+0x1758/0x1ae0 fs/btrfs/volumes.c:3352 Code: 24 18 48 8b 38 48 c7 c6 40 4a ce 8b 89 da e8 2f a8 5a fd eb 19 e8 a8 a6 f0 fd 90 48 c7 c7 e0 49 ce 8b 89 de e8 d9 86 b4 fd 90 <0f> 0b 90 90 49 bd 00 00 00 00 00 fc ff df e9 8c fa ff ff e8 80 a6 RSP: 0018:ffffc9000d30f8c0 EFLAGS: 00010246 RAX: eab4191f522b4500 RBX: ffffffffffffffe4 RCX: 0000000000100000 RDX: ffffc9000e1ea000 RSI: 000000000003ddf4 RDI: 000000000003ddf5 RBP: ffffc9000d30fab0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa64 R12: 1ffff11008767e07 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880530e4001 FS: 00007fe7632146c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb321d6b000 CR3: 000000003fa1b000 CR4: 0000000000352ef0 Call Trace: btrfs_relocate_chunk+0x292/0x3b0 fs/btrfs/volumes.c:3482 __btrfs_balance+0x1870/0x21d0 fs/btrfs/volumes.c:4212 btrfs_balance+0xc94/0x11d0 fs/btrfs/volumes.c:4589 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: 0033:0x7fe76238e929 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:00007fe763214038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe7625b5fa0 RCX: 00007fe76238e929 RDX: 0000200000000780 RSI: 00000000c4009420 RDI: 000000000000000c RBP: 00007fe762410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe7625b5fa0 R15: 00007ffc58da9988