------------[ cut here ]------------ WARNING: CPU: 0 PID: 4388 at fs/btrfs/block-group.c:3692 do_chunk_alloc fs/btrfs/block-group.c:3692 [inline] WARNING: CPU: 0 PID: 4388 at fs/btrfs/block-group.c:3692 btrfs_chunk_alloc+0xe08/0x1150 fs/btrfs/block-group.c:3934 Modules linked in: CPU: 0 PID: 4388 Comm: kworker/u4:7 Not tainted 6.1.142-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:3692 [inline] pc : btrfs_chunk_alloc+0xe08/0x1150 fs/btrfs/block-group.c:3934 lr : do_chunk_alloc fs/btrfs/block-group.c:3692 [inline] lr : btrfs_chunk_alloc+0xe08/0x1150 fs/btrfs/block-group.c:3934 sp : ffff8000213078c0 x29: ffff800021307920 x28: ffff0000d2fea000 x27: ffffffffffffffe4 x26: ffff0000d5dc4000 x25: 1fffe00019c6b413 x24: ffff0000d5dc4000 x23: ffff0000dfec0738 x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000ce35a000 x19: dfff800000000000 x18: ffff800011a8bce0 x17: 0000000000000000 x16: ffff8000082d2400 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191c9c x10: 0000000000000000 x9 : 59693b2cb49f9f00 x8 : 59693b2cb49f9f00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021307358 x4 : ffff800015164800 x3 : ffff80000852e344 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: do_chunk_alloc fs/btrfs/block-group.c:3692 [inline] btrfs_chunk_alloc+0xe08/0x1150 fs/btrfs/block-group.c:3934 flush_space+0x858/0xcdc fs/btrfs/space-info.c:766 btrfs_async_reclaim_metadata_space+0x25c/0x308 fs/btrfs/space-info.c:1080 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849 irq event stamp: 205998 hardirqs last enabled at (205997): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (205998): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (205838): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (205838): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (205805): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0: state A): dumping space info: BTRFS info (device loop0: state A): space_info DATA+METADATA has 9056256 free, is not full BTRFS info (device loop0: state A): space_info total=11534336, used=53248, pinned=0, reserved=12288, may_use=2412544, readonly=0 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 294912 reserved 294912 BTRFS info (device loop0: state A): delayed_refs_rsv: size 917504 reserved 675840 BTRFS: error (device loop0: state A) in do_chunk_alloc:3692: errno=-28 No space left BTRFS info (device loop0: state EA): forced readonly BTRFS: error (device loop0: state EA) in btrfs_create_pending_block_groups:2546: errno=-28 No space left