BTRFS warning (device loop6 state EA): qgroup 0/5 has unreleased space, type 0 rsv 8192 BTRFS error (device loop6 state EA): qgroup reserved space leaked ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7994 at fs/btrfs/space-info.h:265 btrfs_space_info_update_bytes_may_use+0x354/0x6a4 fs/btrfs/space-info.h:-1 Modules linked in: CPU: 0 UID: 0 PID: 7994 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : btrfs_space_info_update_bytes_may_use+0x354/0x6a4 fs/btrfs/space-info.h:-1 lr : btrfs_space_info_update_bytes_may_use+0x350/0x6a4 fs/btrfs/space-info.h:265 sp : ffff8000a27b7850 x29: ffff8000a27b7870 x28: 1fffe0001a67a310 x27: dfff800000000000 x26: ffff80008f57e768 x25: 0000000000000001 x24: ffff0000cadbbd90 x23: 0000000000000005 x22: 00000000000ff000 x21: 0000000000100000 x20: ffff0000d33d1880 x19: 0000000000000000 x18: 0000000000000000 x17: ffff80010ca0e000 x16: ffff800082deb6c0 x15: ffff7000144f6f00 x14: 1ffff000144f6f00 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff7000144f6f00 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000cadbbd80 x7 : ffff800082596180 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008053700c x2 : 0000000000000001 x1 : 0000000000100000 x0 : 00000000000ff000 Call trace: btrfs_space_info_update_bytes_may_use+0x354/0x6a4 fs/btrfs/space-info.h:-1 (P) btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:297 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:153 [inline] btrfs_block_rsv_release+0x3a4/0x490 fs/btrfs/block-rsv.c:292 btrfs_release_global_block_rsv+0x38/0x22c fs/btrfs/block-rsv.c:457 btrfs_free_block_groups+0xa4c/0xd10 fs/btrfs/block-group.c:4574 close_ctree+0x650/0x113c fs/btrfs/disk-io.c:4426 btrfs_put_super+0x1ac/0x1c0 fs/btrfs/super.c:74 generic_shutdown_super+0x12c/0x2b8 fs/super.c:642 kill_anon_super+0x4c/0x7c fs/super.c:1281 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2134 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1327 __cleanup_mnt+0x20/0x30 fs/namespace.c:1334 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x178 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 412112 hardirqs last enabled at (412111): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (412112): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (410180): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (410178): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---