------------[ cut here ]------------ WARNING: CPU: 0 PID: 6746 at fs/btrfs/volumes.c:3259 btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 Modules linked in: CPU: 0 PID: 6746 Comm: syz.1.567 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 lr : btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 sp : ffff800021b675e0 x29: ffff800021b67760 x28: ffff0000e2e86244 x27: ffff0000e2e86248 x26: dfff800000000000 x25: ffffffffffffffe4 x24: ffff0000f1e44b60 x23: ffff70000436ced4 x22: 1fffe0001f9276e0 x21: ffff0000fc93b700 x20: 0000000000000006 x19: 0000000000000000 x18: ffff800021b66a60 x17: 0000000000000000 x16: ffff8000123287ec x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 000000000007ffff x10: ffff8000264cb000 x9 : c58b1bae66820100 x8 : c58b1bae66820100 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021b66ed8 x4 : ffff800015be5360 x3 : ffff800008587994 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: btrfs_remove_chunk+0x1364/0x18e8 fs/btrfs/volumes.c:3259 btrfs_delete_unused_bgs+0x9c0/0xd00 fs/btrfs/block-group.c:1528 btrfs_remount+0xb84/0x121c fs/btrfs/super.c:2076 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655 reconfigure_super+0x318/0x7a4 fs/super.c:977 do_remount fs/namespace.c:2712 [inline] path_mount+0xc70/0xe5c fs/namespace.c:3378 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584 __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+0x58/0x168 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: 1818 hardirqs last enabled at (1817): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (1818): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1666): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (1666): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (1571): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop1: state MA): dumping space info: BTRFS info (device loop1: state MA): space_info DATA+METADATA has 1789952 free, is not full BTRFS info (device loop1: state MA): space_info total=3276800, used=53248, pinned=0, reserved=4096, may_use=1429504, readonly=0 zone_unusable=0 BTRFS info (device loop1: state MA): space_info SYSTEM has 8253440 free, is not full BTRFS info (device loop1: state MA): space_info total=12451840, used=4096, pinned=0, reserved=0, may_use=0, readonly=4194304 zone_unusable=0 BTRFS info (device loop1: state MA): global_block_rsv: size 1441792 reserved 1167360 BTRFS info (device loop1: state MA): trans_block_rsv: size 262144 reserved 262144 BTRFS info (device loop1: state MA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop1: state MA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop1: state MA): delayed_refs_rsv: size 262144 reserved 0 BTRFS: error (device loop1: state MA) in btrfs_remove_chunk:3259: errno=-28 No space left