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Have elf_lookup() return an error if the specified non-weak symbol could

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not be found. Otherwise, relocations against such symbols will be silently
ignored instead of causing an error to be raised.

Reviewed by:	kib
MFC after:	1 week
This commit is contained in:
markj 2015-11-03 03:29:35 +00:00
parent 91183250ec
commit 70321eeb6d
1 changed files with 4 additions and 0 deletions
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4
sys/kern/link_elf.c
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@ -1594,6 +1594,10 @@ elf_lookup(linker_file_t lf, Elf_Size symidx, int deps, Elf_Addr *res)
}
addr = ((Elf_Addr)linker_file_lookup_symbol(lf, symbol, deps));
if (addr == 0 && ELF_ST_BIND(sym->st_info) != STB_WEAK) {
*res = 0;
return (EINVAL);
}
if (elf_set_find(&set_pcpu_list, addr, &start, &base))
addr = addr - start + base;