linux-kernel - Re: [tip:locking/kcsan 12/12] /bin/bash: line 1: 61526 Segmentation fault sparse ...

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Message-ID: <20200527235442.GC1805@zn.tnic>
Date:   Thu, 28 May 2020 01:54:42 +0200
From:   Borislav Petkov <bp@...e.de>
To:     kbuild test robot <lkp@...el.com>
Cc:     Marco Elver <elver@...gle.com>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [tip:locking/kcsan 12/12] /bin/bash: line 1: 61526 Segmentation
 fault  sparse ...

On Thu, May 28, 2020 at 07:39:31AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/kcsan
> head:   a5dead405f6be1fb80555bdcb77c406bf133fdc8
> commit: a5dead405f6be1fb80555bdcb77c406bf133fdc8 [12/12] compiler_types.h: Optimize __unqual_scalar_typeof compilation time
> config: i386-randconfig-s002-20200527 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
> reproduce:
>         # apt-get install sparse
>         # sparse version: v0.6.1-240-gf0fe1cd9-dirty
>         git checkout a5dead405f6be1fb80555bdcb77c406bf133fdc8
>         # save the attached .config to linux build tree
>         make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):

I'll say.

Looking at the subject, that broke the 0day bot too. :-)

/me trims it.

Looks like we need __CHECKER__ ifdeffery somewhere but it is too late
for me to think straight so tomorrow...

-- 
Regards/Gruss,
    Boris.

SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg