objtool: Fix memory leak in elf_create_rela_section()

Let's free the allocated char array 'relaname' before returning,
in order to avoid leaking memory.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: mingo.kernel.org@gmail.com
Link: http://lkml.kernel.org/r/20170914060138.26472-1-martink@posteo.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 6e9f980a7d26fdc4384fdb15d96baaca09846117..1e89a5f8bfc9ccb6f8a0384b29349b26f99264b8 100644 (file)
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -508,6 +508,7 @@ struct section *elf_create_rela_section(struct elf *elf, struct section *base)
        strcat(relaname, base->name);
 
        sec = elf_create_section(elf, relaname, sizeof(GElf_Rela), 0);
+       free(relaname);
        if (!sec)
                return NULL;