passing NULL to clock_getres (VDSO): terminated by unexpected signal 11

[Christophe Leroy]

Adding Thomas to the discussion as the commit is from him.

Le 20/10/2019 à 11:53, Andreas Schwab a écrit :
> On Okt 20 2019, Christophe Leroy <christophe.leroy at c-s.fr> wrote:
> 
>> Le 19/10/2019 à 21:18, Andreas Schwab a écrit :
>>> On Okt 19 2019, Christophe Leroy <christophe.leroy at c-s.fr> wrote:
>>>
>>>> Hi Nathan,
>>>>
>>>> While trying to switch powerpc VDSO to C version of gettimeofday(), I'm
>>>> getting the following kind of error with vdsotest:
>>>>
>>>> passing NULL to clock_getres (VDSO): terminated by unexpected signal 11
>>>>
>>>> Looking at commit a9446a906f52 ("lib/vdso/32: Remove inconsistent NULL
>>>> pointer checks"), it seems that signal 11 is expected when passing NULL
>>>> pointer.
>>>>
>>>> Any plan to fix vdsotest ?
>>>
>>> Passing NULL to clock_getres is valid, and required to return
>>> successfully if the clock id is valid.
>>>
>>
>> Do you mean the following commit is wrong ?
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/lib/vdso?id=a9446a906f52292c52ecbd5be78eaa4d8395756c
> 
> If it causes a valid call to clock_getres to fail, then yes.
> 
> Andreas.
>