BUG: Dentry ffff88816e161880{i=0,n=.index}  still in use (3) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff88816e161880
R13: dffffc0000000000 R14: ffff888166d5a3f8 R15: 0000000000000003
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000680 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c037 ]---
BUG: Dentry ffff88816e161880{i=0,n=.index}  still in use (3) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816e161880
R13: dffffc0000000000 R14: ffff888166d5a3f8 R15: 0000000000000003
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020009038 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c038 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff8881678c9ee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff8881678c9ee0
R13: dffffc0000000000 R14: ffff888166db83f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c039 ]---
BUG: Dentry ffff8881678c9ee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: fffff52001ca3eb5
R10: fffff52001ca3eb5 R11: 0000000000000000 R12: ffff8881678c9ee0
R13: dffffc0000000000 R14: ffff888166db83f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03a ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff88816e158cc0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816e158cc0
R13: dffffc0000000000 R14: ffff88810f5303f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 CR4: 00000000003526b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03b ]---
BUG: Dentry ffff88816e158cc0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816e158cc0
R13: dffffc0000000000 R14: ffff88810f5303f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 CR4: 00000000003526b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03c ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff888167b59660{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888167b59660
R13: dffffc0000000000 R14: ffff88816d6dd3f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03d ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff88810e70c110{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff88810e70c110
R13: dffffc0000000000 R14: ffff8881128d13f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb91bd65fe8 CR3: 000000011841e000 CR4: 00000000003526a0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03e ]---
BUG: Dentry ffff88810e70c110{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff88810e70c110
R13: dffffc0000000000 R14: ffff8881128d13f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb91bd65fe8 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c03f ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff88816795cee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816795cee0
R13: dffffc0000000000 R14: ffff88810a1f03f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ef23000 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c040 ]---
BUG: Dentry ffff88816795cee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff88816795cee0
R13: dffffc0000000000 R14: ffff88810a1f03f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556f99b38 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c041 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff8881678febb0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff8881678febb0
R13: dffffc0000000000 R14: ffff88816db043f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c042 ]---
BUG: Dentry ffff8881678febb0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff8881678febb0
R13: dffffc0000000000 R14: ffff88816db043f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcff5027c0 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d0109 RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c043 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff8881654e8ee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff8881654e8ee0
R13: dffffc0000000000 R14: ffff888165e093f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 CR4: 00000000003526b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c044 ]---
BUG: Dentry ffff8881654e8ee0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff8881654e8ee0
R13: dffffc0000000000 R14: ffff888165e093f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8faad67e0 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c045 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff888167bd8110{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 1 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee295d8
R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888167bd8110
R13: dffffc0000000000 R14: ffff88810ae593f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555efab38 CR3: 000000011841e000 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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c046 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff888167a8b220{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888167a8b220
R13: dffffc0000000000 R14: ffff8881194d23f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3332c000 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c047 ]---
BUG: Dentry ffff888167a8b220{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888167a8b220
R13: dffffc0000000000 R14: ffff8881194d23f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3332c000 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c048 ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff88816e141bb0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816e141bb0
R13: dffffc0000000000 R14: ffff8881683cc3f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020005038 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c049 ]---
BUG: Dentry ffff88816e141bb0{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc9000e51fc88 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88816e141bb0
R13: dffffc0000000000 R14: ffff8881683cc3f8 R15: 0000000000000001
FS:  0000555555ef1400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000680 CR3: 000000011841e000 CR4: 00000000003506b0
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+0x3c/0x70 fs/super.c:1108
 v9fs_kill_super+0x4c/0x90 fs/9p/vfs_super.c:221
 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: 0033:0x7f49a5a88f57
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:00007ffe841d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49a5a88f57
RDX: 00007ffe841d010a RSI: 000000000000000a RDI: 00007ffe841d0100
RBP: 00007ffe841d0100 R08: 00000000ffffffff R09: 00007ffe841cfed0
R10: 0000555555ef2ba3 R11: 0000000000000246 R12: 00007f49a5ae1105
R13: 00007ffe841d11c0 R14: 0000555555ef2b00 R15: 00007ffe841d1200
---[ end trace eb27759e2e41c04a ]---
VFS: Busy inodes after unmount of 9p. Self-destruct in 5 seconds.  Have a nice day...
9pnet: Found fid 0 not clunked
9pnet: Found fid 1 not clunked
BUG: Dentry ffff88810e60d660{i=0,n=.index}  still in use (1) [unmount of 9p 9p]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13620 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 13620 Comm: syz-executor.0 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:ffffc9000e51fc58 EFLAGS: 00010282
RAX: 000000000000004f RBX: ffffffff866d8540 RCX: a1e273cc84a74d00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000