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Message-ID: <CAM_iQpXNbc1pphwfvUoFXE318pgVZdkvHWKG98kUyntUno3Cqw@mail.gmail.com> Date: Wed, 19 Oct 2016 16:41:44 -0700 From: Cong Wang <xiyou.wangcong@...il.com> To: Eric Dumazet <eric.dumazet@...il.com> Cc: Linux Kernel Network Developers <netdev@...r.kernel.org>, Baozeng Ding <sploving1@...il.com>, Marcelo Ricardo Leitner <marcelo.leitner@...il.com> Subject: Re: [Patch net] ipv6: fix a potential deadlock in do_ipv6_setsockopt() On Wed, Oct 19, 2016 at 4:38 PM, Eric Dumazet <eric.dumazet@...il.com> wrote: >> diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c >> index 46ad699..b8c8d20 100644 >> --- a/net/ipv6/af_inet6.c >> +++ b/net/ipv6/af_inet6.c >> @@ -414,7 +414,9 @@ int inet6_release(struct socket *sock) >> return -EINVAL; >> >> /* Free mc lists */ >> + rtnl_lock(); > > Certainly not. > > Some people want IPv6 being reasonably fast. Oh, good catch, I should move the 'if' check out too...
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