Re: [PATCH] objtool: Fix seg fault with Clang non-section symbols

From: Miroslav Benes
Date: Wed Dec 16 2020 - 07:49:03 EST


On Mon, 14 Dec 2020, Josh Poimboeuf wrote:

> The Clang assembler likes to strip section symbols, which means objtool
> can't reference some text code by its section. This confuses objtool
> greatly, causing it to seg fault.
>
> The fix is similar to what was done before, for ORC reloc generation:
>
> e81e07244325 ("objtool: Support Clang non-section symbols in ORC generation")
>
> Factor out that code into a common helper and use it for static call
> reloc generation as well.
>
> Reported-by: Arnd Bergmann <arnd@xxxxxxxxxx>
> Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Link: https://github.com/ClangBuiltLinux/linux/issues/1207
> Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>

Reviewed-by: Miroslav Benes <mbenes@xxxxxxx>

M