[PATCH net 0/2] ipv6: fix EFAULT on sendto with icmpv6 and hdrincl

[Olivier Matz <olivier.matz@6wind.com>]

The following code returns EFAULT (Bad address):

  s = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
  setsockopt(s, SOL_IPV6, IPV6_HDRINCL, 1);
  sendto(ipv6_icmp6_packet, addr);   /* returns -1, errno = EFAULT */

The problem is fixed in the second patch. The first one aligns the
code to ipv4, to avoid a race condition in the second patch.

Olivier Matz (2):
  ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
  ipv6: fix EFAULT on sendto with icmpv6 and hdrincl

 net/ipv6/raw.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

-- 
2.11.0