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<span style="display:inline-block;margin-top:12px;vertical-align:middle"><a href="https://travis-ci.org/openvswitch/ovs/builds/221505308" style="text-decoration:none;font-weight:bold;color:#57769d;text-decoration:underline;color:#df192a">Build #4317 is still failing.</a></span><img src="https://travis-ci.org/images/mailer/arrow-failed.png" style="float: right;" height="45">
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<td class="grey" style="padding:0px;border:0px;color:#808080;padding:10px 20px 10px 0px;height:20px;padding-top:20px;padding-bottom:5px"><strong>Joe Stringer</strong></td>
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<a href="https://github.com/openvswitch/ovs/commit/23d48f225cade1be538f6984c40f6f2e3d35ad62" style="text-decoration:underline;text-decoration:none;font-weight:bold;color:#57769d">23d48f2</a> <a href="https://github.com/openvswitch/ovs/compare/9aeb908788fe...23d48f225cad" style="text-decoration:underline;text-decoration:none;font-weight:bold;color:#57769d">Changeset →</a>
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<td style="border:0px;padding:10px 20px 10px 0px;height:20px;width:50px;padding:0px;border-left:1px solid #adadad;border-bottom-left-radius:5px;border-bottom:1px solid #adadad"> </td>
<td colspan="2" class="grey" style="padding:0px;border:0px;color:#808080;padding:10px 20px 10px 0px;height:20px;border-right:1px solid #adadad;padding-bottom:20px;padding-top:0px;border-bottom:1px solid #adadad;border-bottom-right-radius:5px">compat: vxlan: Fix NULL dereference in dst_cache.<br><br>Neelakantam reports:<br><br>BUG: unable to handle kernel NULL pointer dereference<br>RIP: 0010:[<ffffffffa04e8b4c>] [<ffffffffa04e8b4c>] dst_cache_get_ip4+0xc/0x50 [openvswitch]<br>Call Trace:<br> [<ffffffffa04f6b0a>] vxlan_get_route.isra.41+0xea/0x130 [openvswitch]<br> [<ffffffff81524289>] ? __skb_get_hash+0x39/0x160<br> [<ffffffffa04f7ec0>] ovs_vxlan_fill_metadata_dst+0x170/0x1e0 [openvswitch]<br> [<ffffffffa04e88ee>] ovs_dev_fill_metadata_dst+0x9e/0xd0 [openvswitch]<br> [<ffffffffa04d717e>] output_userspace+0xfe/0x180 [openvswitch]<br> [<ffffffffa04d86dd>] do_execute_actions+0x63d/0x8f0 [openvswitch]<br> [<ffffffffa04d89d1>] ovs_execute_actions+0x41/0x130 [openvswitch]<br> [<ffffffffa04de904>] ovs_dp_process_packet+0x94/0x140 [openvswitch]<br> [<ffffffffa04e73a3>] ovs_vport_receive+0x73/0xd0 [openvswitch]<br> [<ffffffff810c3f12>] ? enqueue_task_fair+0x402/0x6c0<br> [<ffffffff810bb685>] ? sched_clock_cpu+0x85/0xc0<br> [<ffffffff810b5d85>] ? check_preempt_curr+0x75/0xa0<br> [<ffffffff810b5dc9>] ? ttwu_do_wakeup+0x19/0xd0<br> [<ffffffff810b5f5d>] ? ttwu_do_activate.constprop.84+0x5d/0x70<br> [<ffffffff810b8a66>] ? try_to_wake_up+0x1b6/0x300<br> [<ffffffff810b0d84>] ? __wake_up+0x44/0x50<br> [<ffffffffa04e7d84>] internal_dev_xmit+0x24/0x60 [openvswitch]<br> [<ffffffff8152c671>] dev_hard_start_xmit+0x171/0x3b0<br> [<ffffffff8154cd74>] sch_direct_xmit+0x104/0x200<br> [<ffffffff8152cae6>] dev_queue_xmit+0x236/0x570<br> [<ffffffffa03897bc>] macvlan_start_xmit+0x3c/0xc0 [macvlan]<br> [<ffffffff8152c671>] dev_hard_start_xmit+0x171/0x3b0<br> [<ffffffff8154cd74>] sch_direct_xmit+0x104/0x200<br> [<ffffffff8152cae6>] dev_queue_xmit+0x236/0x570<br> [<ffffffffa0517a74>] macvtap_get_user+0x414/0x720 [macvtap]<br> [<ffffffffa0517dab>] macvtap_sendmsg+0x2b/0x30 [macvtap]<br> [<ffffffffa052e10c>] handle_tx+0x2fc/0x550 [vhost_net]<br> [<ffffffffa052e395>] handle_tx_kick+0x15/0x20 [vhost_net]<br> [<ffffffffa051e60b>] vhost_worker+0xfb/0x1e0 [vhost]<br> [<ffffffffa051e510>] ? vhost_dev_reset_owner+0x50/0x50 [vhost]<br> [<ffffffff810a5aef>] kthread+0xcf/0xe0<br> [<ffffffff810a5a20>] ? kthread_create_on_node+0x140/0x140<br> [<ffffffff81645858>] ret_from_fork+0x58/0x90<br> [<ffffffff810a5a20>] ? kthread_create_on_node+0x140/0x140<br><br>ovs_vxlan_fill_metadata_dst() calls vxlan_get_route() with no dst_cache,<br>handle this case and don't attempt to use dst_cache.<br><br>Fixes: e02c0ed70fb7 ("datapath: compat: Use dst-cache for Geneve and VxLAN tunnels.")<br>Reported-by: Neelakantam Gaddam <neelugaddam@gmail.com><br>Signed-off-by: Joe Stringer <joe@ovn.org><br>Tested-by: Neelakantam Gaddam <neelugaddam@gmail.com></td>
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