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GNU C Library master sources branch master updated. glibc-2.24-671-g6fab532
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 2 Feb 2017 21:15:17 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.24-671-g6fab532
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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=6fab532b4781b0bcb554fd5c2f2e6d5448343aff
commit 6fab532b4781b0bcb554fd5c2f2e6d5448343aff
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Feb 2 13:14:43 2017 -0800
Allow IFUNC relocation against unrelocated shared library
IFUNC relocation against definition in unrelocated shared library
will lead to segfault when the IFUNC function is called. This
patch allows such IFUNC relocations with a warning. This isn't
a real fix for
https://sourceware.org/bugzilla/show_bug.cgi?id=21041
It simply allows the program to load. The program will segfault
when longjmp is called.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Replace
_dl_fatal_printf with _dl_error_printf for IFUNC relocation
against unrelocated shared library.
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
diff --git a/ChangeLog b/ChangeLog
index a210e63..9b5b2eb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2017-02-02 H.J. Lu <hongjiu.lu@intel.com>
+
+ * sysdeps/i386/dl-machine.h (elf_machine_rel): Replace
+ _dl_fatal_printf with _dl_error_printf for IFUNC relocation
+ against unrelocated shared library.
+ * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
+
2017-02-02 Siddhesh Poyarekar <siddhesh@sourceware.org>
* sysdeps/generic/unsecvars.h: Add GLIBC_TUNABLES.
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 6eca69d..99a72f6 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -329,7 +329,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
{
const char *strtab
= (const char *) D_PTR (map, l_info[DT_STRTAB]);
- _dl_fatal_printf ("\
+ _dl_error_printf ("\
%s: Relink `%s' with `%s' for IFUNC symbol `%s'\n",
RTLD_PROGNAME, map->l_name,
sym_map->l_name,
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index 3e7ae22..daf4d8c 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -339,7 +339,7 @@ elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc,
{
const char *strtab
= (const char *) D_PTR (map, l_info[DT_STRTAB]);
- _dl_fatal_printf ("\
+ _dl_error_printf ("\
%s: Relink `%s' with `%s' for IFUNC symbol `%s'\n",
RTLD_PROGNAME, map->l_name,
sym_map->l_name,
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
sysdeps/i386/dl-machine.h | 2 +-
sysdeps/x86_64/dl-machine.h | 2 +-
3 files changed, 9 insertions(+), 2 deletions(-)
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