NACK: [SRU][N/P/Q][PATCH 0/1] UBUNTU: SAUCE: selftests: net: fix "buffer overflow detected" for tap.c

[Alice C. Munduruca]

On Thu Dec 4, 2025 at 11:42 PM EST, Alice C. Munduruca wrote:
> BugLink: https://bugs.launchpad.net/bugs/2067642
>
> [ Impact ]
>
> Currently, the default enablement of `-D_FORTIFY_SOURCE=3` in gcc causes
> the kselftest net:tap test to fail due to an error in userspace. As this is not
> an issue with the kernel, the test itself is changed to no longer use a checked
> function (in this case using `memcpy`) to return to the previous behavior.
>
> [ Fix ]
>
> questing: replace the call to strcpy() with memcpy(), which is not checked.
> plucky: cleanly applied questing patch.
> noble: cleanly applied questing patch.
> jammy: Unaffected as the jammy toolchain doesn't enable this option.
>
> [ Test Plan ]
>
> Run the test before and after the patch and notice the difference.
>
> [ Regression Potential ]
>
> N/A, Kernel is not modified by this patch.
>
> Alice C. Munduruca (1):
>   UBUNTU: SAUCE: selftests: net: fix "buffer overflow detected" for
>     tap.c
>
>  tools/testing/selftests/net/tap.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Given that this patch has changed substantially from discussion
upstream, I'll NACK this and wait for things to stabilize before
cherry-picking from upstream.

 - Alice C. Munduruca