Re: [Valgrind-developers] [valgrind] Use statx rather than other stat system calls

[Mark W. <ma...@kl...>]

Hi,

On Fri, 2019-08-16 at 15:59 +0000, Petar Jovanovic wrote:
> https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=c6a6cf929f3e2a9bf5d7f09f334ed4d67f2d6e18
> 
> commit c6a6cf929f3e2a9bf5d7f09f334ed4d67f2d6e18
> Author: Petar Jovanovic <mip...@gm...>
> Date:   Fri Aug 16 15:57:50 2019 +0000
> 
>     Use statx rather than other stat system calls
>     
>     *STAT* system calls other than statx are becoming deprecated.
>     Coregrind should use statx as the first candidate in order to achieve
>     "stat" functionality.
>     
>     There are also systems that do not even support older "stats".
>     
>     This fixes KDE #400593.
>     
>     Patch by Aleksandar Rikalo.

This seems to have broken valgrind on arm64 on some older kernel.
See the nightly build results for the gcc-114 machine.
statx returns ENOSYS but it seems the fallback path isn't taken anyway
for some reason. Resulting in valgrind not being able to execute
anything.

$ ./vg-in-place /bin/true
valgrind: /bin/true: Permission denied

Reverting the above commit makes things work again. Still
investigating. But if this rings a bell for anybody please speak up.

Cheers,

Mark