Re: Fwd: [linux-next:master 4380/4439] include/linux/fortify-string.h:293:17: error: call to '__write_overflow' declared with attribute error: detected write beyond size of object (1st parameter)

[Kees Cook]

On Thu, Oct 17, 2024 at 09:23:25AM -0700, Kees Cook wrote:
> On Thu, Oct 17, 2024 at 09:07:13AM -0700, Kees Cook wrote:
> > Something in the .config is causing the error. (!?) I will start a
> > CONFIG bisect...
> 
> Well, I did a code bisect first, and it reported this which makes _no_
> sense:
> 8afd8c8faa24 ("lsm: remove lsm_prop scaffolding")
> 
> O_o

Looks like a GCC inlining bug. If I query the size of the destination
buffer before calling strscpy the warning magically vanishes. :|

Lovely. I will see if I can construct a work-around.

-- 
Kees Cook