BUG: Dentry 000000002f912484{i=0,n=.reiserfs_priv}  still in use (1) [unmount of squashfs loop3]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3057 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667
Modules linked in:
CPU: 1 PID: 3057 Comm: syz-executor.3 Not tainted 6.0.0-rc4-syzkaller-17186-g25050c56fa3c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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 : ffff800012833bc0
x29: ffff800012833bc0 x28: ffff0000caa41388 x27: ffff80000d4e1e30
x26: ffff0000caa41270 x25: 0000000000000001 x24: ffff0000caa41388
x23: ffff0000caa416a8 x22: ffff0000caa4e888 x21: ffff8000085ee85c
x20: 0000000000000000 x19: ffff0000caa41618 x18: 00000000000000c0
x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c5f49a80
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c5f49a80
x11: ff808000081c39d0 x10: 0000000000000000 x9 : c52a9f494a6f8200
x8 : c52a9f494a6f8200 x7 : ffff800008197c80 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0001fefddcd0 x1 : 0000000000000002 x0 : 0000000000000060
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:473
 kill_block_super+0x30/0x78 fs/super.c:1427
 deactivate_locked_super+0x70/0xd4 fs/super.c:332
 deactivate_super+0xb8/0xbc fs/super.c:363
 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0xc4/0x208 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127
 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+0x9c/0x150 arch/arm64/kernel/entry-common.c:625
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642
 el0t_64_sync+0x18c/0x190
irq event stamp: 2247188
hardirqs last  enabled at (2247187): [<ffff8000081c1c3c>] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264
hardirqs last disabled at (2247188): [<ffff80000bfff6cc>] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395
softirqs last  enabled at (2247182): [<ffff8000080102e4>] _stext+0x2e4/0x37c
softirqs last disabled at (2247097): [<ffff800008104658>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (2247097): [<ffff800008104658>] invoke_softirq+0x70/0xbc kernel/softirq.c:452
---[ end trace 0000000000000000 ]---
BUG: Dentry 000000002f912484{i=0,n=.reiserfs_priv}  still in use (1) [unmount of squashfs loop3]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3057 at fs/dcache.c:1676 umount_check+0xc0/0xc8 fs/dcache.c:1667
Modules linked in:
CPU: 1 PID: 3057 Comm: syz-executor.3 Tainted: G        W          6.0.0-rc4-syzkaller-17186-g25050c56fa3c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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 : ffff800012833bc0
x29: ffff800012833bc0 x28: ffff0000caa41388 x27: ffff80000d4e1e30
x26: ffff0000caa41270 x25: 0000000000000001 x24: ffff0000caa41388
x23: ffff0000caa416a8 x22: ffff0000caa4e888 x21: ffff8000085ee85c
x20: 0000000000000000 x19: ffff0000caa41618 x18: 00000000000000c0
x17: 657375206e69206c x16: ffff80000dbb8658 x15: ffff0000c5f49a80
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c5f49a80
x11: ff808000081c39d0 x10: 0000000000000000 x9 : c52a9f494a6f8200
x8 : c52a9f494a6f8200 x7 : ffff800008197c80 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0001fefddcd0 x1 : 0000000100000003 x0 : 0000000000000060
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:473
 kill_block_super+0x30/0x78 fs/super.c:1427
 deactivate_locked_super+0x70/0xd4 fs/super.c:332
 deactivate_super+0xb8/0xbc fs/super.c:363
 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0xc4/0x208 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1127
 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+0x9c/0x150 arch/arm64/kernel/entry-common.c:625
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642
 el0t_64_sync+0x18c/0x190
irq event stamp: 2247212
hardirqs last  enabled at (2247211): [<ffff8000081c1c3c>] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:264
hardirqs last disabled at (2247212): [<ffff80000bfff6cc>] el1_dbg+0x24/0x5c arch/arm64/kernel/entry-common.c:395
softirqs last  enabled at (2247182): [<ffff8000080102e4>] _stext+0x2e4/0x37c
softirqs last disabled at (2247097): [<ffff800008104658>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (2247097): [<ffff800008104658>] invoke_softirq+0x70/0xbc kernel/softirq.c:452
---[ end trace 0000000000000000 ]---
VFS: Busy inodes after unmount of loop3. Self-destruct in 5 seconds.  Have a nice day...