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[SUNRPC]: Make sure on-stack cmsg buffer is properly aligned. 

Based upon a report from Meelis Roos.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-04-12 13:35:59 -07:00
parent 1d51c69fb6
commit bc375ea7ef
1 changed files with 12 additions and 4 deletions
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16
net/sunrpc/svcsock.c
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@ -452,6 +452,8 @@ union svc_pktinfo_u {
struct in_pktinfo pkti;
struct in6_pktinfo pkti6;
};
#define SVC_PKTINFO_SPACE \
CMSG_SPACE(sizeof(union svc_pktinfo_u))
static void svc_set_cmsg_data(struct svc_rqst *rqstp, struct cmsghdr *cmh)
{
@ -491,8 +493,11 @@ svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
struct svc_sock *svsk = rqstp->rq_sock;
struct socket *sock = svsk->sk_sock;
int slen;
char buffer[CMSG_SPACE(sizeof(union svc_pktinfo_u))];
struct cmsghdr *cmh = (struct cmsghdr *)buffer;
union {
struct cmsghdr hdr;
long all[SVC_PKTINFO_SPACE / sizeof(long)];
} buffer;
struct cmsghdr *cmh = &buffer.hdr;
int len = 0;
int result;
int size;
@ -745,8 +750,11 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
struct svc_sock *svsk = rqstp->rq_sock;
struct svc_serv *serv = svsk->sk_server;
struct sk_buff *skb;
char buffer[CMSG_SPACE(sizeof(union svc_pktinfo_u))];
struct cmsghdr *cmh = (struct cmsghdr *)buffer;
union {
struct cmsghdr hdr;
long all[SVC_PKTINFO_SPACE / sizeof(long)];
} buffer;
struct cmsghdr *cmh = &buffer.hdr;
int err, len;
struct msghdr msg = {
.msg_name = svc_addr(rqstp),