BUG: Dentry 000000005f4dc455{i=0,n=ConOut-8be4df61-93ca-11d2-aa0d-00e098032b8c}  still in use (1) [unmount of efivarfs efivarfs]
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WARNING: CPU: 1 PID: 16081 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667
Modules linked in:
CPU: 1 PID: 16081 Comm: syz-executor.2 Not tainted 5.19.0-rc8-syzkaller-01618-g680fb5b009e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/20/2022
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : umount_check+0xc0/0xc8 fs/dcache.c:1667
lr : umount_check+0xc0/0xc8 fs/dcache.c:1667
sp : ffff800014d8ba80
x29: ffff800014d8ba80 x28: ffff000115f585f8 x27: ffff80000d471690
x26: ffff000115f584e0 x25: 0000000000000001 x24: ffff000115f585f8
x23: ffff00010b495438 x22: ffff000115f584e0 x21: ffff8000085e296c
x20: 0000000000000000 x19: ffff00010b4953a8 x18: 00000000000000c0
x17: 3061612d32643131 x16: ffff80000db3b658 x15: ffff0000c12e3480
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c12e3480
x11: ff808000081bf324 x10: 0000000000000000 x9 : da9b08c6d2fd8f00
x8 : da9b08c6d2fd8f00 x7 : ffff8000081937c0 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0001fefddcd0 x1 : 0000000000000002 x0 : 0000000000000080
Call trace:
 umount_check+0xc0/0xc8 fs/dcache.c:1667
 d_walk+0x13c/0x55c fs/dcache.c:1386
 do_one_tree fs/dcache.c:1683 [inline]
 shrink_dcache_for_umount+0x60/0x140 fs/dcache.c:1699
 generic_shutdown_super+0x30/0x190 fs/super.c:444
 kill_anon_super fs/super.c:1056 [inline]
 kill_litter_super+0x40/0x60 fs/super.c:1065
 efivarfs_kill_sb+0x20/0x4c fs/efivarfs/super.c:246
 deactivate_locked_super+0x70/0xd4 fs/super.c:332
 vfs_get_super fs/super.c:1160 [inline]
 get_tree_single+0x98/0xe8 fs/super.c:1177
 efivarfs_get_tree+0x28/0x38 fs/efivarfs/super.c:231
 vfs_get_tree+0x40/0x140 fs/super.c:1497
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
 path_mount+0x358/0x8b0 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __arm64_sys_mount+0x2f8/0x408 fs/namespace.c:3568
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x154 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:624
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642
 el0t_64_sync+0x18c/0x190
irq event stamp: 1222
hardirqs last  enabled at (1221): [<ffff8000081bd590>] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264
hardirqs last disabled at (1222): [<ffff80000bfa4314>] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395
softirqs last  enabled at (942): [<ffff8000080102e4>] _stext+0x2e4/0x37c
softirqs last disabled at (879): [<ffff800008101e20>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (879): [<ffff800008101e20>] invoke_softirq+0x70/0xbc kernel/softirq.c:452
---[ end trace 0000000000000000 ]---
VFS: Busy inodes after unmount of efivarfs. Self-destruct in 5 seconds.  Have a nice day...