[ovs-build] Still Failing: openvswitch/ovs#4317 (branch-2.6 - 23d48f2)

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Wed Apr 12 22:33:23 UTC 2017


Build Update for openvswitch/ovs
-------------------------------------

Build: #4317
Status: Still Failing

Duration: 1 hour, 0 minutes, and 9 seconds
Commit: 23d48f2 (branch-2.6)
Author: Joe Stringer
Message: compat: vxlan: Fix NULL dereference in dst_cache.

Neelakantam reports:

BUG: unable to handle kernel NULL pointer dereference
RIP: 0010:[<ffffffffa04e8b4c>]  [<ffffffffa04e8b4c>] dst_cache_get_ip4+0xc/0x50 [openvswitch]
Call Trace:
 [<ffffffffa04f6b0a>] vxlan_get_route.isra.41+0xea/0x130 [openvswitch]
 [<ffffffff81524289>] ? __skb_get_hash+0x39/0x160
 [<ffffffffa04f7ec0>] ovs_vxlan_fill_metadata_dst+0x170/0x1e0 [openvswitch]
 [<ffffffffa04e88ee>] ovs_dev_fill_metadata_dst+0x9e/0xd0 [openvswitch]
 [<ffffffffa04d717e>] output_userspace+0xfe/0x180 [openvswitch]
 [<ffffffffa04d86dd>] do_execute_actions+0x63d/0x8f0 [openvswitch]
 [<ffffffffa04d89d1>] ovs_execute_actions+0x41/0x130 [openvswitch]
 [<ffffffffa04de904>] ovs_dp_process_packet+0x94/0x140 [openvswitch]
 [<ffffffffa04e73a3>] ovs_vport_receive+0x73/0xd0 [openvswitch]
 [<ffffffff810c3f12>] ? enqueue_task_fair+0x402/0x6c0
 [<ffffffff810bb685>] ? sched_clock_cpu+0x85/0xc0
 [<ffffffff810b5d85>] ? check_preempt_curr+0x75/0xa0
 [<ffffffff810b5dc9>] ? ttwu_do_wakeup+0x19/0xd0
 [<ffffffff810b5f5d>] ? ttwu_do_activate.constprop.84+0x5d/0x70
 [<ffffffff810b8a66>] ? try_to_wake_up+0x1b6/0x300
 [<ffffffff810b0d84>] ? __wake_up+0x44/0x50
 [<ffffffffa04e7d84>] internal_dev_xmit+0x24/0x60 [openvswitch]
 [<ffffffff8152c671>] dev_hard_start_xmit+0x171/0x3b0
 [<ffffffff8154cd74>] sch_direct_xmit+0x104/0x200
 [<ffffffff8152cae6>] dev_queue_xmit+0x236/0x570
 [<ffffffffa03897bc>] macvlan_start_xmit+0x3c/0xc0 [macvlan]
 [<ffffffff8152c671>] dev_hard_start_xmit+0x171/0x3b0
 [<ffffffff8154cd74>] sch_direct_xmit+0x104/0x200
 [<ffffffff8152cae6>] dev_queue_xmit+0x236/0x570
 [<ffffffffa0517a74>] macvtap_get_user+0x414/0x720 [macvtap]
 [<ffffffffa0517dab>] macvtap_sendmsg+0x2b/0x30 [macvtap]
 [<ffffffffa052e10c>] handle_tx+0x2fc/0x550 [vhost_net]
 [<ffffffffa052e395>] handle_tx_kick+0x15/0x20 [vhost_net]
 [<ffffffffa051e60b>] vhost_worker+0xfb/0x1e0 [vhost]
 [<ffffffffa051e510>] ? vhost_dev_reset_owner+0x50/0x50 [vhost]
 [<ffffffff810a5aef>] kthread+0xcf/0xe0
 [<ffffffff810a5a20>] ? kthread_create_on_node+0x140/0x140
 [<ffffffff81645858>] ret_from_fork+0x58/0x90
 [<ffffffff810a5a20>] ? kthread_create_on_node+0x140/0x140

ovs_vxlan_fill_metadata_dst() calls vxlan_get_route() with no dst_cache,
handle this case and don't attempt to use dst_cache.

Fixes: e02c0ed70fb7 ("datapath: compat: Use dst-cache for Geneve and VxLAN tunnels.")
Reported-by: Neelakantam Gaddam <neelugaddam at gmail.com>
Signed-off-by: Joe Stringer <joe at ovn.org>
Tested-by: Neelakantam Gaddam <neelugaddam at gmail.com>

View the changeset: https://github.com/openvswitch/ovs/compare/9aeb908788fe...23d48f225cad

View the full build log and details: https://travis-ci.org/openvswitch/ovs/builds/221505308

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