netlink: fix uninit-value in netlink_sendmsg
commitpull/10/head6091f09c2f
upstream. 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:1da177e4c3
("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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
1b6d0db7ed
commit
bf2ecb9346
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@ -1813,6 +1813,8 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
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if (msg->msg_namelen) {
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err = -EINVAL;
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if (msg->msg_namelen < sizeof(struct sockaddr_nl))
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goto out;
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if (addr->nl_family != AF_NETLINK)
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goto out;
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dst_portid = addr->nl_pid;
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