Fix GENERIC-KASAN kernel build for amd64

Work around https://github.com/llvm/llvm-project/issues/87923, which
leads to an assertion failure compiling several kernel source files with
asan enabled.

PR: 276104
MFC after: 1 month

(cherry picked from commit b811dac2115a6ada606c03d7d823a95d11c5f3c9)