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Subject[PATCH] fs: binfmt_em86: check return code of remove_arg_zero
From
remove_arg_zero is declared as __must_check. Looks like it can return
-EFAULT on failure.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
fs/binfmt_em86.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/binfmt_em86.c b/fs/binfmt_em86.c
index 06b9b9fddf70..6e98fcfca66e 100644
--- a/fs/binfmt_em86.c
+++ b/fs/binfmt_em86.c
@@ -63,7 +63,8 @@ static int load_em86(struct linux_binprm *bprm)
* This is done in reverse order, because of how the
* user environment and arguments are stored.
*/
- remove_arg_zero(bprm);
+ retval = remove_arg_zero(bprm);
+ if (retval < 0) return retval;
retval = copy_string_kernel(bprm->filename, bprm);
if (retval < 0) return retval;
bprm->argc++;
--
2.29.2.729.g45daf8777d-goog
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