linux-kernel - Re: [security/brute] cfe92ab6a3: WARNING:inconsistent_lock

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Message-ID: <20210302183920.GB3049@ubuntu>
Date:   Tue, 2 Mar 2021 19:39:20 +0100
From:   John Wood <john.wood@....com>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     John Wood <john.wood@....com>, 0day robot <lkp@...el.com>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        Kees Cook <keescook@...omium.org>,
        Jann Horn <jannh@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Jonathan Corbet <corbet@....net>,
        James Morris <jmorris@...ei.org>,
        Shuah Khan <shuah@...nel.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-doc@...r.kernel.org, linux-security-module@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        kernel-hardening@...ts.openwall.com
Subject: Re: [security/brute]  cfe92ab6a3: WARNING:inconsistent_lock_state

On Tue, Mar 02, 2021 at 01:49:41PM +0800, kernel test robot wrote:
>
>
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: cfe92ab6a3ea700c08ba673b46822d51f38d6b40 ("[PATCH v5 2/8] security/brute: Define a LSM and manage statistical data")
> url: https://github.com/0day-ci/linux/commits/John-Wood/Fork-brute-force-attack-mitigation/20210228-022911
> base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next
>
> in testcase: trinity
> version: trinity-static-i386-x86_64-f93256fb_2019-08-28
> with following parameters:
>
> 	group: ["group-00", "group-01", "group-02", "group-03", "group-04"]
>
> test-description: Trinity is a linux system call fuzz tester.
> test-url: http://codemonkey.org.uk/projects/trinity/
>
>
> on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>
>
> +-------------------------------------------------------------------------+------------+------------+
> |                                                                         | 1d53b7aac6 | cfe92ab6a3 |
> +-------------------------------------------------------------------------+------------+------------+
> | WARNING:inconsistent_lock_state                                         | 0          | 6          |
> | inconsistent{IN-SOFTIRQ-W}->{SOFTIRQ-ON-W}usage                         | 0          | 6          |
> +-------------------------------------------------------------------------+------------+------------+
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@...el.com>
>
>
> [  116.852721] ================================
> [  116.853120] WARNING: inconsistent lock state
> [  116.853120] 5.11.0-rc7-00013-gcfe92ab6a3ea #1 Tainted: G S
> [  116.853120] --------------------------------
>
> [...]

Thanks for the report. I will work on this for the next version.

> Thanks,
> Oliver Sang

Thanks,
John Wood