[bug report] WARNING: CPU: 7 PID: 4059 at fs/proc/generic.c:718 remove_proc_entry+0x192/0x1a0

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Hello,

Below issue was triggered in blktests/001 test,please help check it.
branch: for-6.4/block
https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git

[  304.049316] ------------[ cut here ]------------
[  304.050033] remove_proc_entry: removing non-empty directory
'scsi/scsi_debug', leaking at least '12'
[  304.050569] WARNING: CPU: 7 PID: 4059 at fs/proc/generic.c:718
remove_proc_entry+0x192/0x1a0
[  304.051434] Modules linked in: scsi_debug(-) sr_mod cdrom tls
rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache
netfs rfkill sunrpc vfat fat dm_multipath intel_rapl_msr
intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp
coretemp kvm_intel iTCO_wdt kvm ipmi_ssif iTCO_vendor_support mgag200
irqbypass rapl i2c_algo_bit drm_shmem_helper intel_cstate
drm_kms_helper intel_uncore acpi_ipmi pcspkr i2c_i801 hpilo sysc
nvme_common wmi t10_pi dm_mirror dm_region_hash dm_log dm_mod
[  304.554164] CPU: 7 PID: 4059 Comm: modprobe Kdump: loaded Not
tainted 6.3.0-rc2+ #1
[  304.554913] Hardware name: HP ProLiant DL360 Gen9/ProLiant DL360
Gen9, BIOS P89 05/21/2018
[  304.555367] RIP: 0010:remove_proc_entry+0x192/0x1a0
[  304.555980] Code: c7 48 08 99 a3 48 85 c0 48 8d 90 78 ff ff ff 48
0f 45 c2 48 8b 55 78 4c 8b 80 a0 00 00 00 48 8b 92 a0 00 00 00 e8 ae
41 c3 ff <0f> 0b e9 43 ff ff ff e8 82 84 77 00 66 90 90 90 90 90 90 90
90 90
[  304.557349] RSP: 0018:ffffbf48c10e3cb8 EFLAGS: 00010286
[  304.557637] RAX: 0000000000000000 RBX: ffff97d6010db000 RCX: 0000000000000027
[  304.558372] RDX: ffff97d96fbdf848 RSI: 0000000000000001 RDI: ffff97d96fbdf840
[  304.559132] RBP: ffff97d60e0c5540 R08: 0000000000000000 R09: 00000000ffff7fff
[  304.559923] R10: ffffbf48c10e3b58 R11: ffffffffa3fe65a8 R12: ffff97d60e0c55c0
[  304.560696] R13: 0000000000000000 R14: 0000000000000080 R15: 0000000000000000
[  304.561453] FS:  00007fd886f41740(0000) GS:ffff97d96fbc0000(0000)
knlGS:0000000000000000
[  304.561863] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  304.562565] CR2: 0000560f888dcf50 CR3: 000000010a292002 CR4: 00000000001706e0
[  304.563341] Call Trace:
[  304.563483]  <TASK>
[  304.563968]  scsi_proc_hostdir_rm+0x76/0xc0
[  304.564186]  scsi_host_dev_release+0x37/0xe0
[  304.564816]  device_release[  305.065325]  device_unregister+0x13/0x60
[  305.065593]  sdebug_do_remove_host+0xd1/0x100 [scsi_debug]
[  305.066010]  scsi_debug_exit+0x1d/0x410 [scsi_debug]
[  305.066318]  __do_sys_delete_module.constprop.0+0x17a/0x2f0
[  305.066610]  ? __call_rcu_common.constprop.0+0x114/0x2c0
[  305.066907]  ? syscall_trace_enter.constprop.0+0x126/0x1a0
[  305.067177]  do_syscall_64+0x5c/0x90
[  305.067451]  ? exit_to_user_mode_prepare+0xb6/0x100
[  305.068084]  ? syscall_exit_to_user_mode+0x12/0x30
[  305.068769]  ? do_syscall_64+0x69/0x90
[  305.069002]  ? do_syscall_64+0x69/0x90
[  305.069196]  ? do_syscall_64+0x69/0x90
[  305.069424]  entry_SYSCALL_64_after_hwframe+0x72/0xdc
[  305.069679] RIP: 0033:0x7fd88663f5ab
[  305.069872] Code: 73 01 c3 48 8b 0d 75 a8 1b 00 f7 d8 64 89 01 48
83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 45 a8 1b 00 f7 d8 64 89
01 48
[  305.071130] RSP: 002b:00007ffd1d293e48 EFLAGS: 00000206 ORIG_RAX:
00000000000000b0
[  305.071939] RAX: ffffffffffffffda RBX: 000055b2d5e0bd50 RCX: 00007fd88663f5ab
[  305.072728] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055b2d5e0bdb8
[  305.073496] RBP: 000055b2d5e0bd50 R08: 0000000000000000 R09: 0000000000000000
[  305.074254] R10: 00007fd88679eac0 R11: 0000000000000206 R12: 000055b2d5e0bdb8
[  305.075016] R13: 0000000000000000 R14: 000055b2d5e0bdb8 R15: 00007ffd1d296178
[  305.075803]  </TASK>
[  305.075950] ---[ end trace 0000000000000000 ]---

 --
Best Regards,
Changhui Zhong




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