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objtool/klp: Fix relocation conversion failures for R_X86_64_NONE

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Objtool has some hacks which NOP out certain calls/jumps and replace
their relocations with R_X86_64_NONE.  The klp-diff relocation
extraction code will error out when trying to copy these relocations due
to their negative addend, which would only makes sense for a PC-relative
branch instruction.  Just ignore them.

Fixes: dd590d4d57 ("objtool/klp: Introduce klp diff subcommand for diffing object files")
Acked-by: Song Liu <song@kernel.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Josh Poimboeuf 2026-04-20 22:59:12 -07:00
parent da4326573a
commit 3787e82a4e
1 changed files with 3 additions and 0 deletions
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3
tools/objtool/klp-diff.c
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@ -1033,6 +1033,9 @@ static int convert_reloc_secsym_to_sym(struct elf *elf, struct reloc *reloc)
*/
static int convert_reloc_sym(struct elf *elf, struct reloc *reloc)
{
if (reloc_type(reloc) == R_NONE)
return 1;
if (is_reloc_allowed(reloc))
return 0;