Re: [PATCH] [v2] landlock: work around gcc-16 -Wuninitialized warning

[Mickaël Salaün]

On Thu, Sep 17, 2026 at 01:36:15PM +0200, Arnd Bergmann wrote:
> On Thu, Sep 17, 2026, at 12:45, Sebastian Andrzej Siewior wrote:
> > On 2026-09-17 12:26:17 [+0200], Arnd Bergmann wrote:
> >> I checked again and found that this is a config that did produce
> >> the issue a few weeks ago, but doesn't today for me.
> >> I found a different config from this week and managed to reproduce
> >> the problem on today's linux-next using both gcc-16.2 and gcc-17.0
> >> from yesterday, so there is still a related issue that is not
> >> fixed in gcc, even though one at least one of them was fixed.
> >
> > Confirmed. I see the warning on arm64 while x86-64 is quiet. The patch
> > fixes the issue.
> >
> > You might need to update gcc bug tracker.
> 
> Correction: I noticed the failing gcc-17 binary was an old one,
> the current snapshot does not produce the warning any more.
> It does seem like the fix was not yet backported to older compilers,
> and seeing that the final gcc-13.x was released, we will
> continue to need the kernel workaround. I assume the compiler
> fix will eventually make its way into the other stable branches.

Ok, thanks for the investigation, I plan to sent a PR next week.

 Mickaël