From: Nicolas Viennot <Nicolas.Viennot@twosigma.com>
Date: Sun, 19 Jul 2020 10:04:16 +0000 (+0200)
Subject: prctl: exe link permission error changed from -EINVAL to -EPERM
X-Git-Tag: v5.9-rc1~161^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=227175b2c914bfa4a9aa5b210c7cabd42c5858ac;p=thirdparty%2Fkernel%2Flinux.git

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.

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>
---

diff --git a/kernel/sys.c b/kernel/sys.c
index a3f4ef0bbda33..ca11af9d815d9 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2015,7 +2015,7 @@ 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)