From: hartkopp <hartkopp@030b6a49-0b11-0410-94ab-b0dab22257f2>
Date: Sat, 21 May 2011 12:03:55 +0000 (+0000)
Subject: can: avoids a false warning
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/socketcan-devel.git/commitdiff_plain/b1ebf063e1dac50565661c1219b7e36acc7e898c

can: avoids a false warning

At this point optlen == sizeof(sfilter) but some compilers are dumb.

Reported-by: Németh Márton <nm127@freemail.h
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Upstream commit:
http://git.kernel.org/?p=linux/kernel/git/davem/net-next-2.6.git;a=commitdiff;h=4ffa87012efd7b664762b579213d4663560ef4a3


git-svn-id: svn://svn.berlios.de//socketcan/trunk@1258 030b6a49-0b11-0410-94ab-b0dab22257f2
---

diff --git a/kernel/2.6/net/can/raw.c b/kernel/2.6/net/can/raw.c
index 3455c61..b874bce 100644
--- a/kernel/2.6/net/can/raw.c
+++ b/kernel/2.6/net/can/raw.c
@@ -508,7 +508,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
 				return -EFAULT;
 			}
 		} else if (count == 1) {
-			if (copy_from_user(&sfilter, optval, optlen))
+			if (copy_from_user(&sfilter, optval, sizeof(sfilter)))
 				return -EFAULT;
 		}