unwind: fix unwinding of VDSO frames on i386

mmilata · mmilata · commit 2543c337e633 · 2014-08-13T17:57:30.000+02:00
May or may not be elfutils bug: https://bugzilla.redhat.com/show_bug.cgi?id=1129756 Fixes #163. Signed-off-by: Martin Milata <mmilata@redhat.com>
diff --git a/lib/core_unwind.c b/lib/core_unwind.c
@@ -110,7 +110,7 @@ find_elf_core (Dwfl_Module *mod, void **userdata, const char *modname,
             return -1;
 
         *file_name = realpath(executable_file, NULL);
-        *elfp = elf_begin(fd, ELF_C_READ, NULL);
+        *elfp = elf_begin(fd, ELF_C_READ_MMAP, NULL);
         if (*elfp == NULL)
         {
             warn("Unable to open executable '%s': %s", executable_file,

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ find_elf_core (Dwfl_Module mod, void userdata, const char modname,`
`110`	`110`	`return -1;`
`111`	`111`
`112`	`112`	`*file_name = realpath(executable_file, NULL);`
`113`		`- *elfp = elf_begin(fd, ELF_C_READ, NULL);`
	`113`	`+ *elfp = elf_begin(fd, ELF_C_READ_MMAP, NULL);`
`114`	`114`	`if (*elfp == NULL)`
`115`	`115`	`{`
`116`	`116`	`warn("Unable to open executable '%s': %s", executable_file,`