BTRFS info (device loop5): block group has cluster?: no BTRFS info (device loop5): 0 blocks of free space at or bigger than bytes is ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 6266 at fs/btrfs/block-group.c:3758 do_chunk_alloc fs/btrfs/block-group.c:3758 [inline] WARNING: CPU: 0 PID: 6266 at fs/btrfs/block-group.c:3758 btrfs_chunk_alloc+0xd60/0xf9c fs/btrfs/block-group.c:4000 Modules linked in: CPU: 0 PID: 6266 Comm: kworker/u4:8 Not tainted 6.4.0-rc5-syzkaller-gd8b213732169 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: events_unbound btrfs_async_reclaim_metadata_space pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : do_chunk_alloc fs/btrfs/block-group.c:3758 [inline] pc : btrfs_chunk_alloc+0xd60/0xf9c fs/btrfs/block-group.c:4000 lr : do_chunk_alloc fs/btrfs/block-group.c:3758 [inline] lr : btrfs_chunk_alloc+0xd60/0xf9c fs/btrfs/block-group.c:4000 sp : ffff800097b07790 x29: ffff800097b07800 x28: ffff000139197800 x27: 1fffe00025fb2712 x26: 1fffe00027a56705 x25: ffff00013d2b382b x24: dfff800000000000 x23: ffff00013d2b37e0 x22: 0000000000000000 x21: 0000000000000000 x20: ffffffffffffffe4 x19: ffff00012fd93800 x18: 1fffe000368447c6 x17: ffff80008debd000 x16: ffff8000803122b8 x15: 0000000000000002 x14: 1ffff00011bd80ac x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 5d700be2e9130300 x8 : 5d700be2e9130300 x7 : ffff80008028cadc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80008a59de40 x0 : ffff800126418000 Call trace: do_chunk_alloc fs/btrfs/block-group.c:3758 [inline] btrfs_chunk_alloc+0xd60/0xf9c fs/btrfs/block-group.c:4000 flush_space+0x8ec/0xd54 fs/btrfs/space-info.c:767 btrfs_async_reclaim_metadata_space+0x6c8/0x814 fs/btrfs/space-info.c:1078 process_one_work+0x788/0x12d4 kernel/workqueue.c:2405 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2552 kthread+0x288/0x310 kernel/kthread.c:379 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853 irq event stamp: 12459188 hardirqs last enabled at (12459187): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1378 [inline] hardirqs last enabled at (12459187): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5095 hardirqs last disabled at (12459188): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:407 softirqs last enabled at (12459168): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (12459168): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:600 softirqs last disabled at (12459125): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop5: state A): dumping space info: BTRFS info (device loop5: state A): space_info DATA+METADATA has 8605696 free, is not full BTRFS info (device loop5: state A): space_info total=11534336, used=901120, pinned=24576, reserved=0, may_use=2002944, readonly=0 zone_unusable=0 BTRFS info (device loop5: state A): space_info SYSTEM has -98304 free, is not full BTRFS info (device loop5: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop5: state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop5: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop5: state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop5: state A): delayed_block_rsv: size 131072 reserved 131072 BTRFS info (device loop5: state A): delayed_refs_rsv: size 393216 reserved 393216 BTRFS: error (device loop5: state A) in do_chunk_alloc:3758: errno=-28 No space left BTRFS info (device loop5: state EA): forced readonly BTRFS error (device loop5: state EA): allocation failed flags 2, wanted 4096 tree-log 0, relocation: 0 BTRFS info (device loop5: state EA): space_info SYSTEM has -4096 free, is not full BTRFS info (device loop5: state EA): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=4096, readonly=4190208 zone_unusable=0 BTRFS info (device loop5: state EA): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop5: state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop5: state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop5: state EA): delayed_block_rsv: size 131072 reserved 131072 BTRFS info (device loop5: state EA): delayed_refs_rsv: size 393216 reserved 393216 BTRFS info (device loop5: state EA): block group 1048576 has 4194304 bytes, 4096 used 0 pinned 0 reserved 0 zone_unusable [readonly] BTRFS critical (device loop5: state EA): entry offset 1048576, bytes 4096, bitmap no BTRFS critical (device loop5: state EA): entry offset 1056768, bytes 4186112, bitmap no BTRFS info (device loop5: state EA): block group has cluster?: no BTRFS info (device loop5: state EA): 2 blocks of free space at or bigger than bytes is BTRFS: error (device loop5: state EA) in btrfs_create_pending_block_groups:2617: errno=-28 No space left