From b937534868c8d7aec3b6d645bf5fd657bbfccd42 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Wed, 29 May 2013 21:30:20 +0530
Subject: Avoid crashing in LD_DEBUG when program name is unavailable
Resolves: #15465
The program name may be unavailable if the user application tampers
with argc and argv[]. Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
---
sysdeps/i386/dl-machine.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
(limited to 'sysdeps/i386')
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 0b4c46736d..b6fc8051e5 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -464,8 +464,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
- rtld_progname ?: "<program name unknown>",
- strtab + refsym->st_name);
+ RTLD_PROGNAME, strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
@@ -610,8 +609,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
- rtld_progname ?: "<program name unknown>",
- strtab + refsym->st_name);
+ RTLD_PROGNAME, strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
--
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