BTRFS info (device loop6): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4813 at fs/btrfs/space-info.h:122 btrfs_space_info_update_bytes_may_use+0x2f0/0x77c fs/btrfs/space-info.h:-1 Modules linked in: CPU: 1 PID: 4813 Comm: syz-executor Not tainted 6.1.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : btrfs_space_info_update_bytes_may_use+0x2f0/0x77c fs/btrfs/space-info.h:-1 lr : btrfs_space_info_update_bytes_may_use+0x2ec/0x77c fs/btrfs/space-info.h:122 sp : ffff8000216e7650 x29: ffff8000216e7660 x28: dfff800000000000 x27: 1fffe00018759a0c x26: dfff800000000000 x25: ffff8000150ad360 x24: 0000000000000002 x23: 0000000000000005 x22: 00000000000fe000 x21: 0000000000100000 x20: ffff0000c3acd060 x19: 0000000000000000 x18: ffff800011aabce0 x17: 1fffe00033eddf7e x16: ffff8000082d0ec4 x15: 0000000000000000 x14: 00000000ffff8000 x13: 1ffff00002a160b1 x12: 0000000000ff0100 x11: ff0080000a112804 x10: 0000000000000000 x9 : ffff80000a112804 x8 : ffff0000f5e3b780 x7 : ffff80000a111914 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082e77fc x2 : fffffffffff00000 x1 : 0000000000100000 x0 : 00000000000fe000 Call trace: btrfs_space_info_update_bytes_may_use+0x2f0/0x77c fs/btrfs/space-info.h:-1 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:155 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:152 [inline] btrfs_block_rsv_release+0x384/0x450 fs/btrfs/block-rsv.c:296 btrfs_release_global_block_rsv+0x38/0x22c fs/btrfs/block-rsv.c:471 btrfs_free_block_groups+0x918/0xc88 fs/btrfs/block-group.c:4208 close_ctree+0x5dc/0xa80 fs/btrfs/disk-io.c:4802 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:397 generic_shutdown_super+0x130/0x324 fs/super.c:501 kill_anon_super+0x4c/0x80 fs/super.c:1128 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2448 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xe8/0x108 fs/super.c:363 cleanup_mnt+0x37c/0x404 fs/namespace.c:1182 __cleanup_mnt+0x20/0x30 fs/namespace.c:1189 task_work_run+0x1ec/0x270 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 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: 731244 hardirqs last enabled at (731243): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (731244): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (730564): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (730564): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (730467): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---