BTRFS info (device loop0): block group has cluster?: no BTRFS info (device loop0): 0 blocks of free space at or bigger than bytes is ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4391 at fs/btrfs/block-group.c:3688 do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] WARNING: CPU: 1 PID: 4391 at fs/btrfs/block-group.c:3688 btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 Modules linked in: CPU: 1 PID: 4391 Comm: kworker/u4:6 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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:3688 [inline] pc : btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 lr : do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] lr : btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 sp : ffff8000217c7890 x29: ffff8000217c7900 x28: ffff0000d4749000 x27: 1fffe0001bc46513 x26: 1fffe0001b013887 x25: ffff0000d809c43b x24: dfff800000000000 x23: ffff0000d809c3f0 x22: 0000000000000000 x21: 0000000000000000 x20: ffffffffffffffe4 x19: ffff0000de232800 x18: 1fffe0003679c776 x17: ffff800015afd000 x16: ffff800008302888 x15: ffff0001b3ce3bbc x14: 1ffff00002b600b2 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000ff0100 x10: 0000000000000003 x9 : ee6b8a5fe8003300 x8 : ee6b8a5fe8003300 x7 : ffff800008279464 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80001248d5c0 x0 : ffff80019e28f000 Call trace: do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 flush_space+0x8c4/0xdb8 fs/btrfs/space-info.c:766 btrfs_async_reclaim_metadata_space+0x260/0x30c fs/btrfs/space-info.c:1080 process_one_work+0x804/0x1484 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 irq event stamp: 28126 hardirqs last enabled at (28125): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline] hardirqs last enabled at (28125): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5003 hardirqs last disabled at (28126): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (28058): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (28058): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (27937): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0: state A): dumping space info: BTRFS info (device loop0: state A): space_info DATA+METADATA has 6959104 free, is not full BTRFS info (device loop0: state A): space_info total=11534336, used=53248, pinned=8192, reserved=12288, may_use=2875392, readonly=1626112 zone_unusable=0 BTRFS info (device loop0: state A): space_info SYSTEM has -98304 free, is not full BTRFS info (device loop0: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop0: state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop0: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0: state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop0: state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0: state A): delayed_refs_rsv: size 786432 reserved 385024 BTRFS: error (device loop0: state A) in do_chunk_alloc:3688: errno=-28 No space left BTRFS info (device loop0: state EA): forced readonly BTRFS error (device loop0: state EA): allocation failed flags 2, wanted 4096 tree-log 0, relocation: 0 BTRFS info (device loop0: state EA): space_info SYSTEM has -4096 free, is not full BTRFS info (device loop0: state EA): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=4096, readonly=4190208 zone_unusable=0 BTRFS info (device loop0: state EA): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop0: state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0: state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0: state EA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0: state EA): delayed_refs_rsv: size 131072 reserved 131072 BTRFS info (device loop0: state EA): block group 1048576 has 4194304 bytes, 4096 used 0 pinned 0 reserved 0 zone_unusable [readonly] BTRFS critical (device loop0: state EA): entry offset 1048576, bytes 4096, bitmap no BTRFS critical (device loop0: state EA): entry offset 1056768, bytes 4186112, bitmap no BTRFS info (device loop0: state EA): block group has cluster?: no BTRFS info (device loop0: state EA): 0 blocks of free space at or bigger than bytes is BTRFS: error (device loop0: state EA) in btrfs_create_pending_block_groups:2542: errno=-28 No space left