------------[ cut here ]------------ WARNING: CPU: 0 PID: 10188 at fs/btrfs/block-group.c:3535 do_chunk_alloc+0x3e4/0x5bc fs/btrfs/block-group.c:3535 Modules linked in: CPU: 0 PID: 10188 Comm: kworker/u4:51 Not tainted 6.1.0-rc2-syzkaller-154433-g247f34f7b803 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: events_unbound btrfs_async_reclaim_metadata_space pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : do_chunk_alloc+0x3e4/0x5bc fs/btrfs/block-group.c:3535 lr : do_chunk_alloc+0x3e4/0x5bc fs/btrfs/block-group.c:3535 sp : ffff800015693b50 x29: ffff800015693b50 x28: 0000000000000000 x27: ffff0000caad6478 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000005 x23: ffff000170180000 x22: 0000000000000000 x21: ffff000162e13000 x20: ffffffffffffffe4 x19: ffff0000caad6478 x18: fffffffffffffff5 x17: 0000190000c60000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 2938322d20726f72 x12: 7265282064657472 x11: ff808000081c650c x10: 0000000000000000 x9 : 34085458f03fa400 x8 : 34085458f03fa400 x7 : 69746361736e6172 x6 : ffff80000c0903b4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: do_chunk_alloc+0x3e4/0x5bc fs/btrfs/block-group.c:3535 btrfs_chunk_alloc+0x370/0x47c fs/btrfs/block-group.c:3777 flush_space+0x5f4/0x738 fs/btrfs/space-info.c:769 btrfs_async_reclaim_metadata_space+0x43c/0x4e0 fs/btrfs/space-info.c:1083 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x928/0x16ec kernel/fork.c:2197 softirqs last enabled at (0): [] copy_process+0x938/0x16ec kernel/fork.c:2198 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop4: state A): dumping space info: BTRFS info (device loop4: state A): space_info DATA+METADATA has 7745536 free, is not full BTRFS info (device loop4: state A): space_info total=11534336, used=61440, pinned=12288, reserved=0, may_use=2097152, readonly=1617920 zone_unusable=0 BTRFS info (device loop4: state A): space_info SYSTEM has 4091904 free, is not full BTRFS info (device loop4: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=98304, readonly=0 zone_unusable=0 BTRFS info (device loop4: state A): global_block_rsv: size 917504 reserved 917504 BTRFS info (device loop4: state A): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop4: state A): chunk_block_rsv: size 98304 reserved 98304 BTRFS info (device loop4: state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop4: state A): delayed_refs_rsv: size 131072 reserved 131072 BTRFS: error (device loop4: state A) in do_chunk_alloc:3535: errno=-28 No space left BTRFS info (device loop4: state EA): forced readonly BTRFS: error (device loop4: state EA) in btrfs_create_pending_block_groups:2416: errno=-28 No space left