Re: [PATCH v2 03/24] objtool: Handle __sanitize_cov*() tail calls

[Peter Zijlstra]

On Fri, Aug 20, 2021 at 04:17:44PM -0700, Josh Poimboeuf wrote:
> On Thu, Jun 24, 2021 at 11:41:02AM +0200, Peter Zijlstra wrote:
> > +	if (insn->sec->noinstr &&
> > +	    !strncmp(insn->call_dest->name, "__sanitizer_cov_", 16)) {
> > +		if (reloc) {
> > +			reloc->type = R_NONE;
> > +			elf_write_reloc(file->elf, reloc);
> > +		}
> > +
> > +		elf_write_insn(file->elf, insn->sec,
> > +			       insn->offset, insn->len,
> > +			       sibling ? arch_ret_insn(insn->len)
> > +			               : arch_nop_insn(insn->len));
> > +
> > +		insn->type = sibling ? INSN_RETURN : INSN_NOP;
> > +	}
> 
> It'd be nice to keep the comment for this case that was in
> add_call_destinations().

Done!