Merge branch 'bpf-fix-missed-var_off-related-to-movsx-in-verifier'

Yonghong Song says:

====================
bpf: Fix missed var_off related to movsx in verifier

Zac reported a verification issue ([1]) where verification unexpectedly succeeded.
This is due to missing proper var_off setting in verifier related to
movsx insn. I found another similar issue as well. This patch set fixed
both problems and added three inline asm tests to test these fixes.

  [1] https://lore.kernel.org/bpf/CAADnVQLPU0Shz7dWV4bn2BgtGdxN3uFHPeobGBA72tpg5Xoykw@mail.gmail.com/
====================

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20240615174621.3994321-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>