From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 3 Mar 2013 01:39:15 +0000 (-0500)
Subject: fix compat_sys_rt_sigprocmask()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=db61ec29fd56e089007cb7d9a646ea9ddf518c4d;p=openwrt%2Fstaging%2Fblogic.git

fix compat_sys_rt_sigprocmask()

Converting bitmask to 32bit granularity is fine, but we'd better
_do_ something with the result.  Such as "copy it to userland"...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/kernel/signal.c b/kernel/signal.c
index 2a7ae2963185..8d1b785f0dc9 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2653,7 +2653,7 @@ COMPAT_SYSCALL_DEFINE4(rt_sigprocmask, int, how, compat_sigset_t __user *, nset,
 	if (oset) {
 		compat_sigset_t old32;
 		sigset_to_compat(&old32, &old_set);
-		if (copy_to_user(oset, &old_set, sizeof(sigset_t)))
+		if (copy_to_user(oset, &old32, sizeof(compat_sigset_t)))
 			return -EFAULT;
 	}
 	return 0;