Commit 6091f09c authored Apr 07, 2018 by Eric Dumazet Committed by David S. Miller Apr 07, 2018

netlink: fix uninit-value in netlink_sendmsg



syzbot reported :

BUG: KMSAN: uninit-value in ffs arch/x86/include/asm/bitops.h:432 [inline]
BUG: KMSAN: uninit-value in netlink_sendmsg+0xb26/0x1310 net/netlink/af_netlink.c:1851

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent a466856e

net/netlink/af_netlink.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1844,6 +1844,8 @@ static int netlink_sendmsg(struct socket sock, struct msghdr msg, size_t len)

		if (msg->msg_namelen) {
		err = -EINVAL;
		if (msg->msg_namelen < sizeof(struct sockaddr_nl))
		goto out;
		if (addr->nl_family != AF_NETLINK)
		goto out;
		dst_portid = addr->nl_pid;

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