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Date:   Sun, 4 Jun 2023 22:41:05 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Joel Granados <j.granados@...sung.com>
CC:     <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
        <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
        <mcgrof@...nel.org>, <linux-kselftest@...r.kernel.org>,
        Joel Granados <j.granados@...sung.com>, <oliver.sang@...el.com>
Subject: Re: [PATCH 6/8] test_sysclt: Test for registering a mount point



Hello,

kernel test robot noticed "sysctl_could_not_get_directory" on:

commit: 1997935e918fa4c07b70be47ef8f37622df427bd ("[PATCH 6/8] test_sysclt: Test for registering a mount point")
url: https://github.com/intel-lab-lkp/linux/commits/Joel-Granados/parport-plug-a-sysctl-register-leak/20230602-191021
base: https://git.kernel.org/cgit/linux/kernel/git/mcgrof/linux.git sysctl-next
patch link: https://lore.kernel.org/all/20230602110638.789426-7-j.granados@samsung.com/
patch subject: [PATCH 6/8] test_sysclt: Test for registering a mount point

in testcase: boot

compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202306042234.f2d7beff-oliver.sang@intel.com


[ 15.271017][ T1] initcall io_uring_init+0x0/0x40 returned 0 after 87 usecs 
[ 15.272122][ T1] calling test_firmware_init+0x0/0x190 @ 1 
[   15.274422][    T1] test_firmware: interface ready
[ 15.275240][ T1] initcall test_firmware_init+0x0/0x190 returned 0 after 2200 usecs 
[ 15.276480][ T1] calling test_sysctl_init+0x0/0x630 @ 1 
[   15.277687][    T1] sysctl could not get directory: /debug/test_sysctl/mnt/mnt_error -30
[   15.279055][    T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.4.0-rc2-00016-g1997935e918f #1
[   15.280027][    T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[   15.280027][    T1] Call Trace:
[   15.280027][    T1]  <TASK>
[ 15.280027][ T1] dump_stack_lvl (kbuild/src/consumer/lib/dump_stack.c:107) 
[ 15.280027][ T1] __register_sysctl_table (kbuild/src/consumer/fs/proc/proc_sysctl.c:1379) 
[ 15.280027][ T1] test_sysctl_init (kbuild/src/consumer/lib/test_sysctl.c:220 kbuild/src/consumer/lib/test_sysctl.c:235) 
[ 15.280027][ T1] ? test_firmware_init (kbuild/src/consumer/lib/test_sysctl.c:224) 


To reproduce:

        # build kernel
	cd linux
	cp config-6.4.0-rc2-00016-g1997935e918f .config
	make HOSTCC=gcc-12 CC=gcc-12 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-12 CC=gcc-12 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



View attachment "config-6.4.0-rc2-00016-g1997935e918f" of type "text/plain" (162889 bytes)

View attachment "job-script" of type "text/plain" (4956 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (30360 bytes)

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