BUG: Dentry ffff888108efd000{i=0,n=.index}  still in use (1) [unmount of devpts devpts]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 20348 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 20348 Comm: syz-executor.3 Not tainted 5.10.77-syzkaller-01258-g76698ea35fd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 c0 41 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 8e d5 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:ffffc90001657c68 EFLAGS: 00010282
RAX: 0000000000000057 RBX: ffffffff866730c0 RCX: b28636e12d409800
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001657c98 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888108efd000
R13: dffffc0000000000 R14: ffff8881579bf3f8 R15: 0000000000000001
FS:  00005555565c0400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556b4eb38 CR3: 0000000111259000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 fs/dcache.c:1326
 do_one_tree fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 fs/super.c:447
 kill_anon_super fs/super.c:1108 [inline]
 kill_litter_super+0x75/0xa0 fs/super.c:1117
 devpts_kill_sb+0x61/0x70 fs/devpts/inode.c:515
 deactivate_locked_super+0xb0/0x100 fs/super.c:335
 deactivate_super+0xa5/0xd0 fs/super.c:366
 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe2aa357f57
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcf36f098 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2aa357f57
RDX: 00007fffcf36f16b RSI: 000000000000000a RDI: 00007fffcf36f160
RBP: 00007fffcf36f160 R08: 00000000ffffffff R09: 00007fffcf36ef30
R10: 00005555565c1ba3 R11: 0000000000000246 R12: 00007fe2aa3b0105
R13: 00007fffcf370220 R14: 00005555565c1b00 R15: 00007fffcf370260
---[ end trace 513be85a506cd749 ]---
BUG: Dentry ffff888108efd000{i=0,n=.index}  still in use (1) [unmount of devpts devpts]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 20348 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 20348 Comm: syz-executor.3 Tainted: G        W         5.10.77-syzkaller-01258-g76698ea35fd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 c0 41 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 8e d5 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:ffffc90001657c68 EFLAGS: 00010282
RAX: 0000000000000057 RBX: ffffffff866730c0 RCX: b28636e12d409800
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc90001657c98 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888108efd000
R13: dffffc0000000000 R14: ffff8881579bf3f8 R15: 0000000000000001
FS:  00005555565c0400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556b4eb38 CR3: 0000000111259000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 fs/dcache.c:1326
 do_one_tree fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 fs/super.c:447
 kill_anon_super fs/super.c:1108 [inline]
 kill_litter_super+0x75/0xa0 fs/super.c:1117
 devpts_kill_sb+0x61/0x70 fs/devpts/inode.c:515
 deactivate_locked_super+0xb0/0x100 fs/super.c:335
 deactivate_super+0xa5/0xd0 fs/super.c:366
 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe2aa357f57
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcf36f098 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2aa357f57
RDX: 00007fffcf36f16b RSI: 000000000000000a RDI: 00007fffcf36f160
RBP: 00007fffcf36f160 R08: 00000000ffffffff R09: 00007fffcf36ef30
R10: 00005555565c1ba3 R11: 0000000000000246 R12: 00007fe2aa3b0105
R13: 00007fffcf370220 R14: 00005555565c1b00 R15: 00007fffcf370260
---[ end trace 513be85a506cd74a ]---
VFS: Busy inodes after unmount of devpts. Self-destruct in 5 seconds.  Have a nice day...
BUG: Dentry ffff88811a38b440{i=0,n=.index}  still in use (1) [unmount of devpts devpts]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 20348 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 20348 Comm: syz-executor.3 Tainted: G        W         5.10.77-syzkaller-01258-g76698ea35fd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 c0 41 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 8e d5 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:ffffc90001657c68 EFLAGS: 00010282
RAX: 0000000000000057 RBX: ffffffff866730c0 RCX: b28636e12d409800
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001657c98 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff88811a38b440
R13: dffffc0000000000 R14: ffff8881579b83f8 R15: 0000000000000001
FS:  00005555565c0400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556b4eb38 CR3: 0000000111259000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 fs/dcache.c:1326
 do_one_tree fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 fs/super.c:447
 kill_anon_super fs/super.c:1108 [inline]
 kill_litter_super+0x75/0xa0 fs/super.c:1117
 devpts_kill_sb+0x61/0x70 fs/devpts/inode.c:515
 deactivate_locked_super+0xb0/0x100 fs/super.c:335
 deactivate_super+0xa5/0xd0 fs/super.c:366
 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe2aa357f57
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcf36f098 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2aa357f57
RDX: 00007fffcf36f16b RSI: 000000000000000a RDI: 00007fffcf36f160
RBP: 00007fffcf36f160 R08: 00000000ffffffff R09: 00007fffcf36ef30
R10: 00005555565c1ba3 R11: 0000000000000202 R12: 00007fe2aa3b0105
R13: 00007fffcf370220 R14: 00005555565c1b00 R15: 00007fffcf370260
---[ end trace 513be85a506cd74b ]---
BUG: Dentry ffff88811a38b440{i=0,n=.index}  still in use (1) [unmount of devpts devpts]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 20348 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 20348 Comm: syz-executor.3 Tainted: G        W         5.10.77-syzkaller-01258-g76698ea35fd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 c0 41 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 8e d5 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:ffffc90001657c68 EFLAGS: 00010282
RAX: 0000000000000057 RBX: ffffffff866730c0 RCX: b28636e12d409800
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc90001657c98 R08: ffffffff81545288 R09: fffff520002caeb9
R10: fffff520002caeb9 R11: 0000000000000000 R12: ffff88811a38b440
R13: dffffc0000000000 R14: ffff8881579b83f8 R15: 0000000000000001
FS:  00005555565c0400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556b4eb38 CR3: 0000000111259000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 fs/dcache.c:1326
 do_one_tree fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 fs/super.c:447
 kill_anon_super fs/super.c:1108 [inline]
 kill_litter_super+0x75/0xa0 fs/super.c:1117
 devpts_kill_sb+0x61/0x70 fs/devpts/inode.c:515
 deactivate_locked_super+0xb0/0x100 fs/super.c:335
 deactivate_super+0xa5/0xd0 fs/super.c:366
 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe2aa357f57
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcf36f098 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2aa357f57
RDX: 00007fffcf36f16b RSI: 000000000000000a RDI: 00007fffcf36f160
RBP: 00007fffcf36f160 R08: 00000000ffffffff R09: 00007fffcf36ef30
R10: 00005555565c1ba3 R11: 0000000000000202 R12: 00007fe2aa3b0105
R13: 00007fffcf370220 R14: 00005555565c1b00 R15: 00007fffcf370260
---[ end trace 513be85a506cd74c ]---
VFS: Busy inodes after unmount of devpts. Self-destruct in 5 seconds.  Have a nice day...