------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 1 PID: 4537 at fs/btrfs/block-group.c:3990 do_chunk_alloc fs/btrfs/block-group.c:3990 [inline] WARNING: CPU: 1 PID: 4537 at fs/btrfs/block-group.c:3990 btrfs_chunk_alloc+0xf58/0x1220 fs/btrfs/block-group.c:4231 Modules linked in: CPU: 1 UID: 0 PID: 4537 Comm: kworker/u8:12 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT 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:3990 [inline] pc : btrfs_chunk_alloc+0xf58/0x1220 fs/btrfs/block-group.c:4231 lr : do_chunk_alloc fs/btrfs/block-group.c:3990 [inline] lr : btrfs_chunk_alloc+0xf58/0x1220 fs/btrfs/block-group.c:4231 sp : ffff80009d3177c0 x29: ffff80009d317820 x28: ffff0000c80fb000 x27: ffffffffffffffe4 x26: 0000000000000001 x25: ffff0000da00b0b4 x24: ffff0001062b6000 x23: dfff800000000000 x22: ffff0000f84e4000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000da00b000 x18: 00000000ffffffff x17: 0000000000000000 x16: ffff80008af01c68 x15: 0000000000000001 x14: 1fffe000337d64e2 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337d64e3 x10: 0000000000ff0100 x9 : d7638c63f6896d00 x8 : d7638c63f6896d00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009d317118 x4 : ffff80008f776bc0 x3 : ffff8000807bba4c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: do_chunk_alloc fs/btrfs/block-group.c:3990 [inline] (P) btrfs_chunk_alloc+0xf58/0x1220 fs/btrfs/block-group.c:4231 (P) flush_space+0x2f0/0xb68 fs/btrfs/space-info.c:861 do_async_reclaim_metadata_space+0x110/0x364 fs/btrfs/space-info.c:1158 btrfs_async_reclaim_metadata_space+0x90/0xd8 fs/btrfs/space-info.c:1226 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 1163742 hardirqs last enabled at (1163741): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (1163741): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (1163742): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (1163494): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1163492): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop3 state A): dumping space info: BTRFS info (device loop3 state A): space_info DATA+METADATA (sub-group id 0) has 9736192 free, is not full BTRFS info (device loop3 state A): space_info total=11534336, used=49152, pinned=0, reserved=12288, may_use=1736704, readonly=0 zone_unusable=0 BTRFS info (device loop3 state A): space_info SYSTEM (sub-group id 0) has -98304 free, is not full BTRFS info (device loop3 state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop3 state A): global_block_rsv: size 983040 reserved 983040 BTRFS info (device loop3 state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop3 state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop3 state A): delayed_block_rsv: size 294912 reserved 294912 BTRFS info (device loop3 state A): delayed_refs_rsv: size 458752 reserved 458752 BTRFS: error (device loop3 state A) in do_chunk_alloc:3990: errno=-28 No space left BTRFS info (device loop3 state EA): forced readonly BTRFS: error (device loop3 state EA) in btrfs_create_pending_block_groups:2788: errno=-28 No space left