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elf.c (backtrace_initialize): Properly initialize elf_fileline_fn to avoid possible crash. 

libbacktrace/

2016-03-02  Maxim Ostapenko  <m.ostapenko@partner.samsung.com>

	* elf.c (backtrace_initialize): Properly initialize elf_fileline_fn to
	avoid possible crash.
	(elf_add): Don't set *fileline_fn to elf_nodebug value in case of
	missing debug info anymore.

From-SVN: r233911
This commit is contained in:
Max Ostapenko 2016-03-02 18:32:55 +02:00 committed by Maxim Ostapenko
parent 171f7de552
commit 26ac52dba5
2 changed files with 8 additions and 2 deletions
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7
libbacktrace/ChangeLog
View File

@ -1,3 +1,10 @@
2016-03-02 Maxim Ostapenko <m.ostapenko@partner.samsung.com>
* elf.c (backtrace_initialize): Properly initialize elf_fileline_fn to
avoid possible crash.
(elf_add): Don't set *fileline_fn to elf_nodebug value in case of
missing debug info anymore.
2016-02-06 John David Anglin <danglin@gcc.gnu.org> 2016-02-06 John David Anglin <danglin@gcc.gnu.org>
* mmap.c (MAP_FAILED): Define if not defined. * mmap.c (MAP_FAILED): Define if not defined.

3
libbacktrace/elf.c
View File

@ -791,7 +791,6 @@ elf_add (struct backtrace_state *state, int descriptor, uintptr_t base_address,
{ {
if (!backtrace_close (descriptor, error_callback, data)) if (!backtrace_close (descriptor, error_callback, data))
goto fail; goto fail;
*fileline_fn = elf_nodebug;
return 1; return 1;
} }
@ -925,7 +924,7 @@ backtrace_initialize (struct backtrace_state *state, int descriptor,
int ret; int ret;
int found_sym; int found_sym;
int found_dwarf; int found_dwarf;
fileline elf_fileline_fn; fileline elf_fileline_fn = elf_nodebug;
struct phdr_data pd; struct phdr_data pd;
ret = elf_add (state, descriptor, 0, error_callback, data, &elf_fileline_fn, ret = elf_add (state, descriptor, 0, error_callback, data, &elf_fileline_fn,