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[PATCH 4.4 10/37] ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped

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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@google.com>


[ Upstream commit 990ff4d84408fc55942ca6644f67e361737b3d8e ]

While fuzzing kernel with syzkaller, Andrey reported a nasty crash
in inet6_bind() caused by DCCP lacking a required method.

Fixes: ab1e0a13d7029 ("[SOCK] proto: Add hashinfo member to struct proto")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/dccp/ipv6.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -948,6 +948,7 @@ static const struct inet_connection_sock
 	.getsockopt	   = ipv6_getsockopt,
 	.addr2sockaddr	   = inet6_csk_addr2sockaddr,
 	.sockaddr_len	   = sizeof(struct sockaddr_in6),
+	.bind_conflict	   = inet6_csk_bind_conflict,
 #ifdef CONFIG_COMPAT
 	.compat_setsockopt = compat_ipv6_setsockopt,
 	.compat_getsockopt = compat_ipv6_getsockopt,

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[PATCH 4.4 00/37] 4.4.34-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 31/37] sparc64: Convert U1copy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 02/37] net: clear sk_err_soft in sk_clone_lock() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 12/37] fib_trie: Correct /proc/net/route off by one error Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 27/37] sparc64: Delete __ret_efault. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 25/37] sparc64: Fix illegal relative branches in hypervisor patched TLB cross-call code. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 10/37] ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 32/37] sparc64: Convert NG4copy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 24/37] sparc64: Fix instruction count in comment for __hypervisor_flush_tlb_pending. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 07/37] dccp: do not send reset to already closed sockets Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 14/37] net: __skb_flow_dissect() must cap its return value Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 30/37] sparc64: Convert GENcopy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 05/37] ip6_tunnel: Clear IP6CB in ip6tunnel_xmit() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 35/37] sparc64: Convert U3copy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 33/37] sparc64: Convert NGcopy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 11/37] sctp: assign assoc_id earlier in __sctp_connect Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 19/37] sparc: serial: sunhv: fix a double lock bug Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 16/37] tcp: take care of truncations done by sk_filter() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 23/37] sparc64: Fix illegal relative branches in hypervisor patched TLB code. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:30 +0100
  [PATCH 4.4 36/37] sparc64: Delete now unused user copy assembler helpers. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 09/37] ipv6: dccp: fix out of bound access in dccp_v6_err() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 17/37] tty: Prevent ldisc drivers from re-using stale tty fields Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 26/37] sparc64: Handle extremely large kernel TLB range flushes more gracefully. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 29/37] sparc64: Convert copy_in_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 34/37] sparc64: Convert NG2copy_{from,to}_user to accurate exception reporting. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 15/37] ipv4: use new_gw for redirect neigh lookup Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 37/37] sparc64: Delete now unused user copy fixup functions. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:40 +0100
  [PATCH 4.4 01/37] dctcp: avoid bogus doubling of cwnd after loss Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  [PATCH 4.4 20/37] sparc64 mm: Fix base TSB sizing when hugetlb pages are used Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  [PATCH 4.4 04/37] bgmac: stop clearing DMA receive control register right after it is set Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  [PATCH 4.4 21/37] sparc: Handle negative offsets in arch_jump_label_transform Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  [PATCH 4.4 08/37] dccp: fix out of bound access in dccp_v4_err() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  [PATCH 4.4 22/37] sparc64: Handle extremely large kernel TSB range flushes sanely. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-19 10:50 +0100
  Re: [PATCH 4.4 00/37] 4.4.34-stable review Guenter Roeck <linux@roeck-us.net> - 2016-11-19 17:30 +0100
  Re: [PATCH 4.4 00/37] 4.4.34-stable review Shuah Khan <shuah.kh@samsung.com> - 2016-11-21 17:40 +0100
    Re: [PATCH 4.4 00/37] 4.4.34-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-21 17:50 +0100

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