On Thu, 10 Dec 2015, Minfei Huang wrote:
> > + klp_for_each_reloc_sec(obj, reloc_sec) {
> > + relindex = reloc_sec->index;
> > + num_relas = pmod->sechdrs[relindex].sh_size / sizeof(Elf_Rela);
> > + rela = (Elf_Rela *) pmod->sechdrs[relindex].sh_addr;
> > +
> > + /* For each rela in this __klp_rela section */
> > + for (i = 0; i < num_relas; i++, rela++) {
> > + sym = symtab + ELF_R_SYM(rela->r_info);
> > + symname = pmod->core_strtab + sym->st_name;
> > +
> > + if (sym->st_shndx == SHN_LIVEPATCH) {
> > + if (sym->st_info == 'K')
> > + ret = klp_find_external_symbol(pmod, symname, &addr);
> > + else
> > + ret = klp_find_object_symbol(obj->name, symname, &addr);
> > + if (ret)
> > + return ret;
> > + sym->st_value = addr;
> > + }
> > }
> > + ret = apply_relocate_add(pmod->sechdrs, pmod->core_strtab,
> > + pmod->index.sym, relindex, pmod);
>
> It is more appropiate to test the ret.
And if error is encountered ... then you'd propose to do what?
The code is correct as is; the return value is propagated properly to
caller, and all the existing callers have proper error handling.
--
Jiri Kosina
SUSE Labs
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