If an ARM mapping symbol shares an address with a valid symbol,
find_elf_symbol can currently return the mapping symbol instead, as the
symbol is not validated. This can result in confusing warnings:
WARNING: vmlinux.o(.text+0x18f4028): Section mismatch in reference
from the function set_reset_devices() to the variable .init.text:$x.0
This change adds a call to is_valid_name to find_elf_symbol, similarly
to how it's already used in find_elf_symbol2.
Bug: 117237524
Change-Id: I7bcab44f7c8f350baa699cd966c04cfa5f81ca0a
(cherry picked from commit 5818c683a619c534c113e1f66d24f636defc29bc
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
0e70f1102d