BTRFS info (device loop5): 0 free space entries at or bigger than 4096 bytes BTRFS info (device loop5): 4190208 bytes available across all block groups ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 1 PID: 787 at fs/btrfs/block-group.c:4000 do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] WARNING: CPU: 1 PID: 787 at fs/btrfs/block-group.c:4000 btrfs_chunk_alloc+0xfd4/0x150c fs/btrfs/block-group.c:4241 Modules linked in: CPU: 1 UID: 0 PID: 787 Comm: kworker/u8:5 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: events_unbound btrfs_async_reclaim_metadata_space pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] pc : btrfs_chunk_alloc+0xfd4/0x150c fs/btrfs/block-group.c:4241 lr : do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] lr : btrfs_chunk_alloc+0xfd4/0x150c fs/btrfs/block-group.c:4241 sp : ffff80009d5677c0 x29: ffff80009d567820 x28: ffff0000d5f13000 x27: ffffffffffffffe4 x26: 0000000000000001 x25: ffff0000cc7bc000 x24: ffff0001007c90b4 x23: dfff800000000000 x22: dfff800000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0001007c9000 x18: 1fffe000337a0688 x17: ffff80008f7be000 x16: ffff80008b007230 x15: 0000000000000001 x14: 1fffe000337a3108 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093306be8 x10: 0000000000000003 x9 : 8c446fa0ca1e6000 x8 : 8c446fa0ca1e6000 x7 : ffff800080491074 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000006 x1 : ffff80008b6577c0 x0 : 0000000000000001 Call trace: do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] (P) btrfs_chunk_alloc+0xfd4/0x150c fs/btrfs/block-group.c:4241 (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:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 635662 hardirqs last enabled at (635661): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline] hardirqs last enabled at (635661): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5105 hardirqs last disabled at (635662): [] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574 softirqs last enabled at (633068): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (633068): [] nsim_dev_trap_report drivers/net/netdevsim/dev.c:835 [inline] softirqs last enabled at (633068): [] nsim_dev_trap_report_work+0x67c/0x9fc drivers/net/netdevsim/dev.c:866 softirqs last disabled at (633066): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (633066): [] nsim_dev_trap_report drivers/net/netdevsim/dev.c:831 [inline] softirqs last disabled at (633066): [] nsim_dev_trap_report_work+0x5f4/0x9fc drivers/net/netdevsim/dev.c:866 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop5 state A): dumping space info: BTRFS info (device loop5 state A): space_info DATA+METADATA (sub-group id 0) has 8253440 free, is not full BTRFS info (device loop5 state A): space_info total=11534336, used=53248, pinned=20480, reserved=1257472, may_use=1949696, readonly=0 zone_unusable=0 BTRFS info (device loop5 state A): space_info SYSTEM (sub-group id 0) has -98304 free, is not full BTRFS info (device loop5 state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=4190208 zone_unusable=0 BTRFS info (device loop5 state A): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop5 state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop5 state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop5 state A): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop5 state A): delayed_refs_rsv: size 1048576 reserved 1048576 BTRFS: error (device loop5 state A) in do_chunk_alloc:4000: errno=-28 No space left BTRFS info (device loop5 state EA): forced readonly BTRFS info (device loop5 state EA): space_info SYSTEM (sub-group id 0) has 0 free, is not full BTRFS info (device loop5 state EA): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=4190208 zone_unusable=0 BTRFS info (device loop5 state EA): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop5 state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop5 state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop5 state EA): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop5 state EA): delayed_refs_rsv: size 1048576 reserved 1048576 BTRFS info (device loop5 state EA): space_info SYSTEM (sub-group id 0) has 0 free, is not full BTRFS info (device loop5 state EA): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=4190208 zone_unusable=0 BTRFS info (device loop5 state EA): global_block_rsv: size 1441792 reserved 1441792 BTRFS info (device loop5 state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop5 state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop5 state EA): delayed_block_rsv: size 32768 reserved 32768 BTRFS info (device loop5 state EA): delayed_refs_rsv: size 1048576 reserved 1048576 BTRFS: error (device loop5 state EA) in btrfs_create_pending_block_groups:2796: errno=-28 No space left