net: avoid NULL deref in inet_ctl_sock_destroy()
authorEric Dumazet <edumazet@google.com>
Mon, 2 Nov 2015 15:50:07 +0000 (07:50 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 3 Nov 2015 03:46:09 +0000 (22:46 -0500)
commit8fa677d2706d325d71dab91bf6e6512c05214e37
tree6c16f02d7e748cd313e91424e34f181d9c7bdf21
parentec13ad1d705c9990d55ed8ab21946cef323d30c7
net: avoid NULL deref in inet_ctl_sock_destroy()

Under low memory conditions, tcp_sk_init() and icmp_sk_init()
can both iterate on all possible cpus and call inet_ctl_sock_destroy(),
with eventual NULL pointer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/inet_common.h