Github user yatsukhnenko commented on the pull request:
https://github.com/apache/trafficserver/pull/674#issuecomment-222421825
Sorry, I don't know how to reproduce this bug :( It happens when I use
[plugin](https://github.com/apache/trafficserver/pull/644) which uses
vconnections. But there is some additional info in traffic.out which may be
helpful
```
DEBUG: (http_redirect) [HttpTunnel::producer_handler] enable_redirection:
[1 0 1] event: 100
DEBUG: (http_tunnel) [833] consumer_handler [cache write t
VC_EVENT_WRITE_READY]
DEBUG: (http_tunnel) [833] consumer_handler [user agent
VC_EVENT_WRITE_READY]
DEBUG: (http_tunnel) [833] producer_handler [cache read VC_EVENT_READ_READY]
DEBUG: (http_redirect) [HttpTunnel::producer_handler] enable_redirection:
[1 0 0] event: 100
DIAG: (limit_rate) TSEventImmediate
DEBUG: (http_tunnel) [833] consumer_handler [user agent
VC_EVENT_WRITE_READY]
DEBUG: (http_tunnel) [833] consumer_handler [user agent VC_EVENT_ERROR]
DEBUG: (http) [833] [&HttpSM::tunnel_handler_ua, VC_EVENT_ERROR]
DEBUG: (http) [833] Initiating background fill
NOTE: Traffic Server received Sig 11: Segmentation fault
```
I lost debug info for VC_EVENT_EOS event
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