Eric Dumazet 95556a8838 dccp: avoid deadlock in dccp_v4_ctl_send_reset ... In the prep work I did before enabling BH while handling socket backlog, I missed two points in DCCP : 1) dccp_v4_ctl_send_reset() uses bh_lock_sock(), assuming BH were blocked. It is not anymore always true. 2) dccp_v4_route_skb() was using __IP_INC_STATS() instead of IP_INC_STATS() A similar fix was done for TCP, in commit 47dcc20a39 ("ipv4: tcp: ip_send_unicast_reply() is not BH safe") Fixes: 7309f8821f ("dccp: do not assume DCCP code is non preemptible") Fixes: 5413d1babe ("net: do not block BH while processing socket backlog") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-07-09 18:14:17 -04:00
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dccp	dccp: avoid deadlock in dccp_v4_ctl_send_reset	2016-07-09 18:14:17 -04:00
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