linux-kernel - Re: [selftests/lkdtm] 84d8cf25b0: kernel_BUG_at

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Date:   Wed, 23 Jun 2021 07:30:26 -0700
From:   Kees Cook <keescook@...omium.org>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     0day robot <lkp@...el.com>,
        Guillaume Tucker <guillaume.tucker@...labora.com>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        Shuah Khan <shuah@...nel.org>, stable@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [selftests/lkdtm]  84d8cf25b0:
 kernel_BUG_at_drivers/misc/lkdtm/bugs.c

On Wed, Jun 23, 2021 at 10:35:50PM +0800, kernel test robot wrote:
> 
> 
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-9):
> 
> commit: 84d8cf25b0f80da0ac229214864654a7662ec7e4 ("[PATCH v2] selftests/lkdtm: Use /bin/sh not $SHELL")
> url: https://github.com/0day-ci/linux/commits/Kees-Cook/selftests-lkdtm-Use-bin-sh-not-SHELL/20210619-105959
> base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next
> 
> in testcase: kernel-selftests
> version: kernel-selftests-x86_64-f8879e85-1_20210618
> with following parameters:
> 
> 	group: lkdtm
> 	ucode: 0xe2

Heh. Yes, this is working as intended. :) Most of the lkdtm tests will
trigger Oopses, and this is by design: it is checking that the kernel
catches bad conditions and freaks out appropriately.

-Kees

-- 
Kees Cook