In kmalloc failing path, we shouldn't free pointers in 'info',
because the struct 'info' is uninitilized when kmalloc is called.
And when kmalloc returns NULL, it's needless to kfree it.
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
--
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index f6d5a9d..357b503 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1900,7 +1900,7 @@ static int elf_core_dump(long signr, struct pt_regs *regs, struct file *file, un
/* alloc memory for large data structures: too large to be on stack */
elf = kmalloc(sizeof(*elf), GFP_KERNEL);
if (!elf)
- goto cleanup;
+ goto out;
segs = current->mm->map_count;
#ifdef ELF_CORE_EXTRA_PHDRS
@@ -2034,8 +2034,9 @@ end_coredump:
set_fs(fs);
cleanup:
- kfree(elf);
free_note_info(&info);
+ kfree(elf);
+out:
return has_dumped;
}
--