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authorVlad Yasevich <vladislav.yasevich@hp.com>2009-04-09 13:37:33 -0400
committerDavid S. Miller <davem@davemloft.net>2009-04-11 04:53:06 -0400
commit499923c7a3254971873e55a1690d07d3700eea47 (patch)
tree42c5c7281d9edd02e8130ee72306a5f5d8a2f367 /net/ipv4/udp.c
parent48f6e8990858fc9a0ca7d3c9347e6774eb941dba (diff)
ipv6: Fix NULL pointer dereference with time-wait sockets
Commit b2f5e7cd3dee2ed721bf0675e1a1ddebb849aee6 (ipv6: Fix conflict resolutions during ipv6 binding) introduced a regression where time-wait sockets were not treated correctly. This resulted in the following: BUG: unable to handle kernel NULL pointer dereference at 0000000000000062 IP: [<ffffffff805d7d61>] ipv4_rcv_saddr_equal+0x61/0x70 ... Call Trace: [<ffffffffa033847b>] ipv6_rcv_saddr_equal+0x1bb/0x250 [ipv6] [<ffffffffa03505a8>] inet6_csk_bind_conflict+0x88/0xd0 [ipv6] [<ffffffff805bb18e>] inet_csk_get_port+0x1ee/0x400 [<ffffffffa0319b7f>] inet6_bind+0x1cf/0x3a0 [ipv6] [<ffffffff8056d17c>] ? sockfd_lookup_light+0x3c/0xd0 [<ffffffff8056ed49>] sys_bind+0x89/0x100 [<ffffffff80613ea2>] ? trace_hardirqs_on_thunk+0x3a/0x3c [<ffffffff8020bf9b>] system_call_fastpath+0x16/0x1b Tested-by: Brian Haley <brian.haley@hp.com> Tested-by: Ed Tomlinson <edt@aei.ca> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index bda08a09357d..7a1d1ce22e66 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -222,7 +222,7 @@ fail:
222 return error; 222 return error;
223} 223}
224 224
225int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2) 225static int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
226{ 226{
227 struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2); 227 struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
228 228
@@ -1823,7 +1823,6 @@ EXPORT_SYMBOL(udp_lib_getsockopt);
1823EXPORT_SYMBOL(udp_lib_setsockopt); 1823EXPORT_SYMBOL(udp_lib_setsockopt);
1824EXPORT_SYMBOL(udp_poll); 1824EXPORT_SYMBOL(udp_poll);
1825EXPORT_SYMBOL(udp_lib_get_port); 1825EXPORT_SYMBOL(udp_lib_get_port);
1826EXPORT_SYMBOL(ipv4_rcv_saddr_equal);
1827 1826
1828#ifdef CONFIG_PROC_FS 1827#ifdef CONFIG_PROC_FS
1829EXPORT_SYMBOL(udp_proc_register); 1828EXPORT_SYMBOL(udp_proc_register);