Meet compiled kernel binaray abnormal issue while enabling generic kasan in kernel 6.12 with some default KBUILD_RUSTFLAGS on

[Matthew Maurer]

The reason removing that code makes your build "work" is because it
entirely disables pointer authentication in Rust code when you remove
it. That is likely not what you want.

> > We have KASAN builds with android16-6.12 and haven't seen this issue.
> > Can you share your entire config file, so we can try to reproduce?

This - please provide the config file or instructions to reproduce the
build. Since this is an upstream avenue, ideally provide instructions
for reproducing against `linux-next`, or failing that (e.g. if it's
not broken there) against v6.12.38. The default android16-6.12 build
will work fine with ASAN. If you can't provide the entire config file
in a public context, or if you only have instructions for building it
with Kleaf + fragments, or can only reproduce with the Android tree,
please reroute this request to our bug intake system (I am pretty sure
unisoc has access) and cc myself, carlos, and Alice.