| commit | 3e4006f0b86a5ae5eb0e8215f9a9e1db24506977 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <edumazet@google.com> | Fri Jan 08 09:35:51 2016 -0800 |
| committer | David S. Miller <davem@davemloft.net> | Sun Jan 10 22:58:03 2016 -0500 |
| tree | 46041d98779ad4d94052a8460a5fa558a6e5e712 | |
| parent | 320f1a4a175e7cd5d3f006f92b4d4d3e2cbb7bb5 [diff] |
ipv6: tcp: add rcu locking in tcp_v6_send_synack()
When first SYNACK is sent, we already hold rcu_read_lock(), but this
is not true if a SYNACK is retransmitted, as a timer (soft) interrupt
does not hold rcu_read_lock()
Fixes: 45f6fad84cc30 ("ipv6: add complete rcu protection around np->opt")
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>