------------[ cut here ]------------ WARNING: CPU: 0 PID: 4531 at fs/btrfs/block-group.c:3688 do_chunk_alloc fs/btrfs/block-group.c:3688 [inline] WARNING: CPU: 0 PID: 4531 at fs/btrfs/block-group.c:3688 btrfs_chunk_alloc+0xd5c/0xfa4 fs/btrfs/block-group.c:3930 Modules linked in: CPU: 0 PID: 4531 Comm: kworker/u4:13 Not tainted 6.1.131-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 : ffff8000223b7890 x29: ffff8000223b7900 x28: ffff0000d8862000 x27: 1fffe00018708613 x26: 1fffe0001e8ee56e x25: ffff0000f4772b73 x24: dfff800000000000 x23: ffff0000f4772b28 x22: 0000000000000000 x21: 0000000000000000 x20: ffffffffffffffe4 x19: ffff0000c3843000 x18: ffff8000223b6d00 x17: 0000000000000000 x16: ffff800012327ebc x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : 90f8fe02af920600 x8 : 90f8fe02af920600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000223b7178 x4 : ffff800015be5320 x3 : ffff8000085888b0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 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: 139950 hardirqs last enabled at (139949): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (139950): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (138586): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (138586): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (138567): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop1: state A): dumping space info: BTRFS info (device loop1: state A): space_info DATA+METADATA has 4325376 free, is not full BTRFS info (device loop1: state A): space_info total=11534336, used=57344, pinned=20480, reserved=2211840, may_use=4919296, readonly=0 zone_unusable=0 BTRFS info (device loop1: state A): space_info SYSTEM has -98304 free, is not full BTRFS info (device loop1: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop1: state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop1: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop1: state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop1: state A): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop1: state A): delayed_refs_rsv: size 4194304 reserved 3444736 BTRFS: error (device loop1: state A) in do_chunk_alloc:3688: errno=-28 No space left BTRFS info (device loop1: state EA): forced readonly BTRFS: error (device loop1: state EA) in btrfs_create_pending_block_groups:2542: errno=-28 No space left