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: 1 PID: 6111 at fs/btrfs/volumes.c:3253 btrfs_remove_chunk+0x11d8/0x1754 fs/btrfs/volumes.c:3253 Modules linked in: CPU: 1 PID: 6111 Comm: syz.4.297 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 : ffff800020317640 x29: ffff8000203177c0 x28: ffff0000c06967e8 x27: ffff0000c0696790 x26: ffffffffffffffe4 x25: dfff800000000000 x24: ffff0000cef370d0 x23: ffff700004062ee0 x22: 1fffe0001d1b1920 x21: ffff0000e8d8c900 x20: ffff0000c06967dc x19: 00000000ffffffe4 x18: 0000000000000001 x17: 0000000000000002 x16: ffff800011b4efd4 x15: 00000000ffffffff x14: ffff0000e7bd3680 x13: 0000000000000001 x12: 0000000000080000 x11: 000000000007ffff x10: ffff80002af7e000 x9 : 84cd9f0e3f4ed900 x8 : 84cd9f0e3f4ed900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800020316db8 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: 5838 hardirqs last enabled at (5837): [<ffff80000832c1b4>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (5838): [<ffff800011b4a688>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (5774): [<ffff8000081b6920>] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (5774): [<ffff8000081b6920>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (5553): [<ffff8000081b6fb8>] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (5553): [<ffff8000081b6fb8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (5553): [<ffff8000081b6fb8>] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (5553): [<ffff8000081b6fb8>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 49ea9122f4edf5d6 ]--- BTRFS: error (device loop4) in btrfs_remove_chunk:3253: errno=-28 No space left