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exec: Simplify remove_arg_zero() error path 

We don't need the "out" label any more, so remove "ret" and return
directly on error.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: linux-mm@kvack.org
Cc: linux-fsdevel@vger.kernel.org
This commit is contained in:
Kees Cook 2024-03-09 13:46:30 -08:00
parent 1710742994
commit 725d502612
1 changed files with 3 additions and 7 deletions
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10
fs/exec.c
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@ -1720,7 +1720,6 @@ static int prepare_binprm(struct linux_binprm *bprm)
*/
int remove_arg_zero(struct linux_binprm *bprm)
{
int ret = 0;
unsigned long offset;
char *kaddr;
struct page *page;
@ -1731,10 +1730,8 @@ int remove_arg_zero(struct linux_binprm *bprm)
do {
offset = bprm->p & ~PAGE_MASK;
page = get_arg_page(bprm, bprm->p, 0);
if (!page) {
ret = -EFAULT;
goto out;
}
if (!page)
return -EFAULT;
kaddr = kmap_local_page(page);
for (; offset < PAGE_SIZE && kaddr[offset];
@ -1748,8 +1745,7 @@ int remove_arg_zero(struct linux_binprm *bprm)
bprm->p++;
bprm->argc--;
out:
return ret;
return 0;
}
EXPORT_SYMBOL(remove_arg_zero);