BTRFS info (device loop2): relocating block group 1048576 flags system ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9188 at fs/btrfs/volumes.c:3220 btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3220 Modules linked in: CPU: 0 PID: 9188 Comm: syz-executor286 Not tainted 6.1.78-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3220 lr : btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3220 sp : ffff8000250c76a0 x29: ffff8000250c7820 x28: 0000000000100000 x27: ffff0000df3e0050 x26: dfff800000000000 x25: ffffffffffffffe4 x24: ffff0000cb4c18f0 x23: ffff700004a18eec x22: 1fffe0001974a220 x21: ffff0000cba51100 x20: 0000000000000000 x19: 0000000000000000 x18: 1fffe0003686bb76 x17: ffff80001583d000 x16: ffff800008304a58 x15: ffff0001b435dbbc x14: 1ffff00002b080b0 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000ff0100 x10: 0000000000000003 x9 : 9f20277c9850b500 x8 : 9f20277c9850b500 x7 : ffff80000827c520 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff8000122ac660 x0 : ffff80019ebcc000 Call trace: btrfs_remove_chunk+0x1378/0x1904 fs/btrfs/volumes.c:3220 btrfs_relocate_chunk+0x260/0x368 fs/btrfs/volumes.c:3350 __btrfs_balance+0x1468/0x1dc8 fs/btrfs/volumes.c:4042 btrfs_balance+0xa38/0xe40 fs/btrfs/volumes.c:4418 btrfs_ioctl_balance+0x3e4/0x778 fs/btrfs/ioctl.c:4511 btrfs_ioctl+0x72c/0xb08 fs/btrfs/ioctl.c:5545 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+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 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: 69242 hardirqs last enabled at (69241): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1366 [inline] hardirqs last enabled at (69241): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5004 hardirqs last disabled at (69242): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (69022): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (69020): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop2: state A): dumping space info: BTRFS info (device loop2: state A): space_info DATA+METADATA has 1867776 free, is not full BTRFS info (device loop2: state A): space_info total=3276800, used=61440, pinned=0, reserved=8192, may_use=1339392, readonly=0 zone_unusable=0 BTRFS info (device loop2: state A): space_info SYSTEM has 8253440 free, is not full BTRFS info (device loop2: state A): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=0, readonly=4194304 zone_unusable=0 BTRFS info (device loop2: state A): global_block_rsv: size 917504 reserved 913408 BTRFS info (device loop2: state A): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop2: state A): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state A): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop2: state A): delayed_refs_rsv: size 524288 reserved 163840 BTRFS: error (device loop2: state A) in btrfs_remove_chunk:3220: errno=-28 No space left BTRFS info (device loop2: state EA): forced readonly BTRFS info (device loop2: state EA): 1 enospc errors during balance BTRFS info (device loop2: state EA): balance: ended with status: -28