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[NET]: Make sure ctl buffer is aligned properly in sys_sendmsg(). 

It's on the stack and declared as "unsigned char[]", but pointers
and similar can be in here thus we need to give it an explicit
alignment attribute.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Williamson 2005-09-26 14:28:02 -07:00 committed by David S. Miller
parent 8ddec7460d
commit b9d717a7b4
1 changed files with 3 additions and 1 deletions
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4
net/socket.c
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@ -1700,7 +1700,9 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
struct socket *sock; struct socket *sock;
char address[MAX_SOCK_ADDR]; char address[MAX_SOCK_ADDR];
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
unsigned char ctl[sizeof(struct cmsghdr) + 20]; /* 20 is size of ipv6_pktinfo */ unsigned char ctl[sizeof(struct cmsghdr) + 20]
__attribute__ ((aligned (sizeof(__kernel_size_t))));
/* 20 is size of ipv6_pktinfo */
unsigned char *ctl_buf = ctl; unsigned char *ctl_buf = ctl;
struct msghdr msg_sys; struct msghdr msg_sys;
int err, ctl_len, iov_size, total_len; int err, ctl_len, iov_size, total_len;