BUG: Dentry ffff888119947330{i=0,n=.index}  still in use (1) [unmount of ext4 loop0]
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WARNING: CPU: 0 PID: 367 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 367 Comm: syz-executor801 Not tainted 5.10.76-syzkaller-01178-g4944ec82ebb9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 00 40 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 5e d9 9e ff 48 83 c4 08 <0f> 0b e9 f1 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c c9 fe ff
RSP: 0018:ffffc90000c47778 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffffffff86690d40 RCX: ae914cbbd0747b00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000c477a8 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888119947330
R13: dffffc0000000000 R14: ffff88811d7403f8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2e482ff8 CR3: 000000000640f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1326
 do_one_tree syzkaller/managers/android-5-10/kernel/fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 syzkaller/managers/android-5-10/kernel/fs/super.c:447
 kill_block_super+0x80/0xe0 syzkaller/managers/android-5-10/kernel/fs/super.c:1446
 deactivate_locked_super+0xb0/0x100 syzkaller/managers/android-5-10/kernel/fs/super.c:335
 deactivate_super+0xa5/0xd0 syzkaller/managers/android-5-10/kernel/fs/super.c:366
 cleanup_mnt+0x45f/0x510 syzkaller/managers/android-5-10/kernel/fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 syzkaller/managers/android-5-10/kernel/fs/namespace.c:1125
 task_work_run+0x147/0x1b0 syzkaller/managers/android-5-10/kernel/kernel/task_work.c:154
 exit_task_work syzkaller/managers/android-5-10/kernel/./include/linux/task_work.h:30 [inline]
 do_exit+0x70e/0x23a0 syzkaller/managers/android-5-10/kernel/kernel/exit.c:813
 do_group_exit+0x16a/0x2d0 syzkaller/managers/android-5-10/kernel/kernel/exit.c:910
 get_signal+0x133e/0x1f80 syzkaller/managers/android-5-10/kernel/kernel/signal.c:2790
 arch_do_signal+0x8d/0x620 syzkaller/managers/android-5-10/kernel/arch/x86/kernel/signal.c:805
 exit_to_user_mode_loop syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xaa/0xe0 syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 syzkaller/managers/android-5-10/kernel/arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7faac66e1299
Code: Unable to access opcode bytes at RIP 0x7faac66e126f.
RSP: 002b:00007faac668e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007faac67663e0 RCX: 00007faac66e1299
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faac67663e8
RBP: 00007faac67663ec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 6e656d6572636e69 R14: e5d26e84aa4cf3c6 R15: 00007faac67663e8
---[ end trace 2864258e1230588c ]---
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