[PATCH] libdwfl: Make sure symstrdata->d_buf != NULL in relocate resolve_symbol.

Mark Wielaard mjw at redhat.com
Thu Dec 18 08:31:30 UTC 2014


Signed-off-by: Mark Wielaard <mjw at redhat.com>
---
 libdwfl/ChangeLog  | 4 ++++
 libdwfl/relocate.c | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/libdwfl/ChangeLog b/libdwfl/ChangeLog
index 3658576..f6db301 100644
--- a/libdwfl/ChangeLog
+++ b/libdwfl/ChangeLog
@@ -1,3 +1,7 @@
+2014-12-18  Mark Wielaard  <mjw at redhat.com>
+
+	* relocate.c (resolve_symbol): Make sure symstrdata->d_buf != NULL.
+
 2014-12-13  Mark Wielaard  <mjw at redhat.com>
 
 	* dwfl_module_getdwarf.c (find_dynsym): elf_getdata_rawchunk takes
diff --git a/libdwfl/relocate.c b/libdwfl/relocate.c
index fd7dbd5..e102e1e 100644
--- a/libdwfl/relocate.c
+++ b/libdwfl/relocate.c
@@ -206,7 +206,8 @@ resolve_symbol (Dwfl_Module *referer, struct reloc_symtab_cache *symtab,
 	  symtab->symstrdata = elf_getdata (elf_getscn (symtab->symelf,
 							symtab->strtabndx),
 					    NULL);
-	  if (unlikely (symtab->symstrdata == NULL))
+	  if (unlikely (symtab->symstrdata == NULL
+			|| symtab->symstrdata->d_buf == NULL))
 	    return DWFL_E_LIBELF;
 	}
       if (unlikely (sym->st_name >= symtab->symstrdata->d_size))
-- 
1.8.3.1



More information about the elfutils-devel mailing list