BTRFS error (device loop4): failed to run delayed ref for logical 5324800 num_bytes 4096 type 176 action 1 ref_mod 1: -28 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 177 at fs/btrfs/extent-tree.c:2150 btrfs_run_delayed_refs+0x45c/0x4c0 fs/btrfs/extent-tree.c:2150 Modules linked in: CPU: 1 PID: 177 Comm: kworker/u4:3 Not tainted 6.1.123-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound btrfs_async_reclaim_metadata_space pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_run_delayed_refs+0x45c/0x4c0 fs/btrfs/extent-tree.c:2150 lr : btrfs_run_delayed_refs+0x45c/0x4c0 fs/btrfs/extent-tree.c:2150 sp : ffff8000211e78f0 x29: ffff8000211e7900 x28: 0000000000000003 x27: 00000000001f0000 x26: 00000000ffffffe4 x25: ffff0000ca32f000 x24: 1fffe0001e98c4b2 x23: ffff0000f4c62590 x22: 000000000000001f x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000f4c62540 x18: ffff8000211e6ce0 x17: 0000000000000000 x16: ffff80001232d384 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : bf910c1a4b00a500 x8 : bf910c1a4b00a500 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000211e71d8 x4 : ffff800015b731c0 x3 : ffff8000085869b0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: btrfs_run_delayed_refs+0x45c/0x4c0 fs/btrfs/extent-tree.c:2150 flush_space+0x854/0xdb8 fs/btrfs/space-info.c:744 btrfs_async_reclaim_metadata_space+0x260/0x30c fs/btrfs/space-info.c:1080 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 process_scheduled_works kernel/workqueue.c:2355 [inline] worker_thread+0xb6c/0xfec kernel/workqueue.c:2441 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 irq event stamp: 1371818 hardirqs last enabled at (1371817): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (1371818): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1370988): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (1370988): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599 softirqs last disabled at (1370979): [] __do_softirq+0x14/0x20 kernel/softirq.c:605 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop4: state A): dumping space info: BTRFS info (device loop4: state A): space_info DATA+METADATA has 2232320 free, is full BTRFS info (device loop4: state A): space_info total=3276800, used=45056, pinned=16384, reserved=0, may_use=983040, readonly=0 zone_unusable=0 BTRFS info (device loop4: state A): space_info SYSTEM has 12447744 free, is not full BTRFS info (device loop4: state A): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=0, readonly=0 zone_unusable=0 BTRFS info (device loop4: state A): global_block_rsv: size 983040 reserved 983040 BTRFS info (device loop4: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop4: state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop4: state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop4: state A): delayed_refs_rsv: size 0 reserved 0 BTRFS: error (device loop4: state A) in btrfs_run_delayed_refs:2150: errno=-28 No space left BTRFS info (device loop4: state EA): forced readonly