loop0: detected capacity change from 0 to 32768 BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5318) BTRFS info (device loop0): first mount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2 BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm BTRFS info (device loop0): enabling ssd optimizations BTRFS info (device loop0): turning on sync discard BTRFS info (device loop0): enabling free space tree BTRFS info (device loop0): balance: start -susage=4,drange=7..107,limit=1..3 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 error (device loop0): allocation failed flags 12, wanted 4096 tree-log 0, relocation: 0 BTRFS info (device loop0): space_info DATA+METADATA (sub-group id 0) has 1769472 free, is full BTRFS info (device loop0): space_info total=3276800, used=61440, pinned=0, reserved=0, may_use=1445888, readonly=0 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 327680 reserved 0 BTRFS info (device loop0): block group 5242880 has 1638400 bytes, 40960 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (1597440 bytes available) BTRFS critical (device loop0): entry offset 5242880, bytes 12288, bitmap no BTRFS critical (device loop0): entry offset 5259264, bytes 8192, bitmap no BTRFS critical (device loop0): entry offset 5271552, bytes 16384, bitmap no BTRFS critical (device loop0): entry offset 5316608, bytes 28672, bitmap no BTRFS critical (device loop0): entry offset 5349376, bytes 1531904, bitmap no BTRFS info (device loop0): block group has cluster?: no BTRFS info (device loop0): 5 free space entries at or bigger than 4096 bytes BTRFS info (device loop0): block group 6881280 has 1638400 bytes, 20480 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (1617920 bytes available) BTRFS critical (device loop0): entry offset 6901760, bytes 1617920, 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): 3215360 bytes available across all block groups ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 5318 at fs/btrfs/block-group.c:2796 btrfs_create_pending_block_groups+0x1150/0x1780 fs/btrfs/block-group.c:2796 Modules linked in: CPU: 0 UID: 0 PID: 5318 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_create_pending_block_groups+0x1150/0x1780 fs/btrfs/block-group.c:2796 Code: 00 e8 34 d7 b2 fd 84 c0 74 29 e8 eb 9c cc fd e9 fd 01 00 00 e8 e1 9c cc fd 90 48 c7 c7 40 cc b0 8b 44 89 f6 e8 41 aa 8f fd 90 <0f> 0b 90 90 e9 e5 fd ff ff e8 02 d2 5a 07 41 89 c7 31 ff 89 c6 e8 RSP: 0018:ffffc9000ee276e0 EFLAGS: 00010246 RAX: c98669bb86c91300 RBX: ffff888051430001 RCX: 0000000000100000 RDX: ffffc9000dd3a000 RSI: 00000000000147b6 RDI: 00000000000147b7 RBP: ffffc9000ee27948 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa650 R12: 0000000000000000 R13: dffffc0000000000 R14: 00000000ffffffe4 R15: ffff8880514a8000 FS: 00007fe78b6b66c0(0000) GS:ffff88808d302000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f65728e5730 CR3: 000000001fafc000 CR4: 0000000000352ef0 Call Trace: __btrfs_end_transaction+0x140/0x640 fs/btrfs/transaction.c:1071 btrfs_inc_block_group_ro+0x641/0x6f0 fs/btrfs/block-group.c:3092 btrfs_relocate_block_group+0x3f1/0xc60 fs/btrfs/relocation.c:3936 btrfs_relocate_chunk+0x12f/0x5c0 fs/btrfs/volumes.c:3451 __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:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe78a78efc9 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:00007fe78b6b6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe78a9e5fa0 RCX: 00007fe78a78efc9 RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000004 RBP: 00007fe78a811f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe78a9e6038 R14: 00007fe78a9e5fa0 R15: 00007ffd52fe69d8