From e86efe1e99ef4de55944e2f3dcebad26f7b63bbc Mon Sep 17 00:00:00 2001
From: Nicolas Viennot <Nicolas.Viennot@twosigma.com>
Date: Sun, 19 Jul 2020 12:04:16 +0200
Subject: [PATCH] UPSTREAM: prctl: exe link permission error changed from
 -EINVAL to -EPERM

This brings consistency with the rest of the prctl() syscall where
-EPERM is returned when failing a capability check.

Change-Id: I1b27a485d4ca9dd99376c6628572509835aabaf3
Signed-off-by: Nicolas Viennot <Nicolas.Viennot@twosigma.com>
Signed-off-by: Adrian Reber <areber@redhat.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Link: https://lore.kernel.org/r/20200719100418.2112740-7-areber@redhat.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: ralph950412 <ralph950412@gmail.com>
Signed-off-by: rsuntk <rissu.ntk@gmail.com>
---
 kernel/sys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index 5c5924b44472..fa98ba2e9e39 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2022,7 +2022,7 @@ static int prctl_set_mm_map(int opt, const void __user *addr, unsigned long data
 		 * This may have implications in the tomoyo subsystem.
 		 */
 		if (!checkpoint_restore_ns_capable(current_user_ns()))
-			return -EINVAL;
+			return -EPERM;
 
 		error = prctl_set_mm_exe_file(mm, prctl_map.exe_fd);
 		if (error)