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Accepting request 738209 from home:Andreas_Schwab:Factory

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- ldconfig-dynstr.patch: ldconfig: handle .dynstr located in separate
  segment (bsc#1153149, BZ #25087)

OBS-URL: https://build.opensuse.org/request/show/738209
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=543
This commit is contained in:
Andreas Schwab 2019-10-14 08:36:41 +00:00 committed by Git OBS Bridge
parent e188f590ce
commit fa41141404
3 changed files with 95 additions and 0 deletions
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6
glibc.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Thu Oct 10 14:39:24 UTC 2019 - Andreas Schwab <schwab@suse.de>
- ldconfig-dynstr.patch: ldconfig: handle .dynstr located in separate
segment (bsc#1153149, BZ #25087)
-------------------------------------------------------------------
Mon Sep 23 14:00:09 UTC 2019 - Andreas Schwab <schwab@suse.de>

3
glibc.spec
View File

@ -271,6 +271,8 @@ Patch1001: riscv-vfork.patch
Patch2000: fix-locking-in-_IO_cleanup.patch
# PATCH-FIX-UPSTREAM Avoid concurrency problem in ldconfig (BZ #23973)
Patch2001: ldconfig-concurrency.patch
# PATCH-FIX-UPSTREAM ldconfig: handle .dynstr located in separate segment (BZ #25087)
Patch2002: ldconfig-dynstr.patch
# Non-glibc patches
# PATCH-FIX-OPENSUSE Remove debianisms from manpages
@ -473,6 +475,7 @@ makedb: A program to create a database for nss
%patch2000 -p1
%patch2001 -p1
%patch2002 -p1
%patch3000

86
ldconfig-dynstr.patch Normal file
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@ -0,0 +1,86 @@
ldconfig: handle .dynstr located in separate segment (bug 25087)
To determine the load offset of the DT_STRTAB section search for the
segment containing it, instead of using the load offset of the first
segment.
[BZ #25087]
* elf/readelflib.c (process_elf_file): Use containing segment for
DT_STRTAB load offset.
---
elf/readelflib.c | 34 +++++++++++++++++++++-------------
1 file changed, 21 insertions(+), 13 deletions(-)
Index: glibc-2.30/elf/readelflib.c
===================================================================
--- glibc-2.30.orig/elf/readelflib.c
+++ glibc-2.30/elf/readelflib.c
@@ -45,7 +45,6 @@ process_elf_file (const char *file_name,
{
int i;
unsigned int j;
- ElfW(Addr) loadaddr;
unsigned int dynamic_addr;
size_t dynamic_size;
char *program_interpreter;
@@ -87,7 +86,6 @@ process_elf_file (const char *file_name,
libc5/libc6. */
*flag = FLAG_ELF;
- loadaddr = -1;
dynamic_addr = 0;
dynamic_size = 0;
program_interpreter = NULL;
@@ -98,11 +96,6 @@ process_elf_file (const char *file_name,
switch (segment->p_type)
{
- case PT_LOAD:
- if (loadaddr == (ElfW(Addr)) -1)
- loadaddr = segment->p_vaddr - segment->p_offset;
- break;
-
case PT_DYNAMIC:
if (dynamic_addr)
error (0, 0, _("more than one dynamic segment\n"));
@@ -176,11 +169,6 @@ process_elf_file (const char *file_name,
}
}
- if (loadaddr == (ElfW(Addr)) -1)
- {
- /* Very strange. */
- loadaddr = 0;
- }
/* Now we can read the dynamic sections. */
if (dynamic_size == 0)
@@ -197,7 +185,27 @@ process_elf_file (const char *file_name,
check_ptr (dyn_entry);
if (dyn_entry->d_tag == DT_STRTAB)
{
- dynamic_strings = (char *) (file_contents + dyn_entry->d_un.d_val - loadaddr);
+ /* Find the file offset of the segment containing the dynamic
+ string table. */
+ ElfW(Off) loadoff = -1;
+ for (i = 0, segment = elf_pheader;
+ i < elf_header->e_phnum; i++, segment++)
+ {
+ if (segment->p_type == PT_LOAD
+ && dyn_entry->d_un.d_val >= segment->p_vaddr
+ && dyn_entry->d_un.d_val < segment->p_vaddr + segment->p_filesz)
+ {
+ loadoff = segment->p_vaddr - segment->p_offset;
+ break;
+ }
+ }
+ if (loadoff == (ElfW(Off)) -1)
+ {
+ /* Very strange. */
+ loadoff = 0;
+ }
+
+ dynamic_strings = (char *) (file_contents + dyn_entry->d_un.d_val - loadoff);
check_ptr (dynamic_strings);
break;
}