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commit 3e058c9d7eab6d6361e7cda5ba1394bc1757c9f6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri May 22 17:46:42 2015 -0700
Don't issue an error if DT_PLTRELSZ is missing
A shared object doesn't need PLT if there are no PLT relocations. It
shouldn't be an error if DT_PLTRELSZ is missing.
[BZ #18410]
* elf/dl-reloc.c (_dl_relocate_object): Don't issue an error
for missing DT_PLTRELSZ.
diff -rup a/elf/dl-reloc.c b/elf/dl-reloc.c
--- a/elf/dl-reloc.c 2017-10-04 16:42:16.000000000 -0400
+++ b/elf/dl-reloc.c 2017-10-05 17:44:14.486358084 -0400
@@ -259,21 +259,13 @@ _dl_relocate_object (struct link_map *l,
ELF_DYNAMIC_RELOCATE (l, lazy, consider_profiling, skip_ifunc);
#ifndef PROF
- if (__builtin_expect (consider_profiling, 0))
+ if (__builtin_expect (consider_profiling, 0)
+ && l->l_info[DT_PLTRELSZ] != NULL)
{
/* Allocate the array which will contain the already found
relocations. If the shared object lacks a PLT (for example
if it only contains lead function) the l_info[DT_PLTRELSZ]
will be NULL. */
- if (l->l_info[DT_PLTRELSZ] == NULL)
- {
- errstring = N_("%s: no PLTREL found in object %s\n");
- fatal:
- _dl_fatal_printf (errstring,
- rtld_progname ?: "<program name unknown>",
- l->l_name);
- }
-
size_t sizeofrel = l->l_info[DT_PLTREL]->d_un.d_val == DT_RELA
? sizeof (ElfW(Rela))
: sizeof (ElfW(Rel));
@@ -284,7 +276,7 @@ _dl_relocate_object (struct link_map *l,
{
errstring = N_("\
%s: out of memory to store relocation results for %s\n");
- goto fatal;
+ _dl_fatal_printf (errstring, rtld_progname, l->l_name);
}
}
#endif