BTRFS critical (device loop4): entry offset 8523776, bytes 8253440, bitmap no BTRFS info (device loop4): block group has cluster?: no BTRFS info (device loop4): 1 blocks of free space at or bigger than bytes is ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4386 at fs/btrfs/volumes.c:3253 btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253 Modules linked in: CPU: 0 PID: 4386 Comm: syz.4.66 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253 lr : btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253 sp : ffff8000200f7640 x29: ffff8000200f77c0 x28: ffff0000d21735d8 x27: ffff0000d2173580 x26: ffffffffffffffe4 x25: dfff800000000000 x24: ffff0000e4c6a410 x23: ffff70000401eee0 x22: 1fffe00019d1cb20 x21: ffff0000ce8e5900 x20: ffff0000d21735cc x19: 00000000ffffffe4 x18: 0000000000000001 x17: 0000000000000002 x16: ffff800011b4efd4 x15: 00000000ffffffff x14: ffff0000c278b680 x13: 0000000000000001 x12: 0000000000080000 x11: 000000000007ffff x10: ffff8000299a1000 x9 : 1ac0213f36ebf900 x8 : 1ac0213f36ebf900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000200f6db8 x4 : ffff800014c50660 x3 : ffff8000085568c0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253 btrfs_delete_unused_bgs+0x8d4/0xd28 fs/btrfs/block-group.c:1432 btrfs_remount+0xc60/0x130c fs/btrfs/super.c:2001 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:634 reconfigure_super+0x1d0/0x6ec fs/super.c:938 do_remount fs/namespace.c:2668 [inline] path_mount+0xbec/0x101c fs/namespace.c:3334 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount fs/namespace.c:3540 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 2958 hardirqs last enabled at (2957): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (2958): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (2904): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (2904): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (2883): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (2883): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (2883): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (2883): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 023205a43bf1d2fc ]--- BTRFS: error (device loop4) in btrfs_remove_chunk:3253: errno=-28 No space left