BTRFS info (device loop1): balance: start -d -m BTRFS info (device loop1): relocating block group 6881280 flags data|metadata ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4531 at fs/btrfs/volumes.c:3265 btrfs_remove_chunk+0x127c/0x18d4 fs/btrfs/volumes.c:3265 Modules linked in: CPU: 0 PID: 4531 Comm: syz.1.21 Not tainted 6.1.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x127c/0x18d4 fs/btrfs/volumes.c:3265 lr : btrfs_remove_chunk+0x127c/0x18d4 fs/btrfs/volumes.c:3265 sp : ffff800021537700 x29: ffff800021537860 x28: ffff0000e02f9498 x27: ffff0000e02f94b8 x26: ffff8000215377a0 x25: ffffffffffffffe4 x24: 1fffe0001c05f29c x23: ffff0000e02f94e4 x22: ffff0000dd268150 x21: dfff800000000000 x20: 0000000000000000 x19: 0000000000000000 x18: ffff800011aabce0 x17: 1fffe00033ed9d7e x16: ffff8000082d2374 x15: 0000000040000000 x14: 0000000000000002 x13: 1ffff00002a160b1 x12: 0000000000ff0100 x11: ff0080000a88c734 x10: 0000000000000003 x9 : e4261a04f5282a00 x8 : e4261a04f5282a00 x7 : ffff800008251ec8 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011aad7e0 x0 : ffff80018a6c9000 Call trace: btrfs_remove_chunk+0x127c/0x18d4 fs/btrfs/volumes.c:3265 btrfs_relocate_chunk+0x24c/0x364 fs/btrfs/volumes.c:3395 __btrfs_balance+0x1390/0x1af8 fs/btrfs/volumes.c:4098 btrfs_balance+0xa44/0xe20 fs/btrfs/volumes.c:4474 btrfs_ioctl_balance+0x3c0/0x5f8 fs/btrfs/ioctl.c:4531 btrfs_ioctl+0xac4/0xbd0 fs/btrfs/ioctl.c:5570 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 76854 hardirqs last enabled at (76853): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline] hardirqs last enabled at (76853): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5003 hardirqs last disabled at (76854): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (76532): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (76530): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop1: state A): dumping space info: BTRFS info (device loop1: state A): space_info DATA+METADATA has 7962624 free, is not full BTRFS info (device loop1: state A): space_info total=11534336, used=61440, pinned=0, reserved=8192, may_use=1863680, readonly=1638400 zone_unusable=0 BTRFS info (device loop1: state A): space_info SYSTEM has 4190208 free, is not full BTRFS info (device loop1: state A): space_info total=4194304, used=4096, pinned=0, reserved=0, may_use=0, readonly=0 zone_unusable=0 BTRFS info (device loop1: state A): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop1: state A): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop1: state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop1: state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop1: state A): delayed_refs_rsv: size 524288 reserved 163840 BTRFS: error (device loop1: state A) in btrfs_remove_chunk:3265: errno=-28 No space left BTRFS info (device loop1: state EA): forced readonly BTRFS info (device loop1: state EA): 1 enospc errors during balance BTRFS info (device loop1: state EA): balance: ended with status: -30