[Varnish] #1488: Panic at high volume of requests

[Varnish]

#1488: Panic at high volume of requests
--------------------------+-----------------------------------------------
 Reporter:  mattrobenolt  |       Owner:  Martin Blix Grydeland <martin@…>
     Type:  defect        |      Status:  closed
 Priority:  normal        |   Milestone:
Component:  varnishd      |     Version:  4.0.0
 Severity:  normal        |  Resolution:  fixed
 Keywords:  panic         |
--------------------------+-----------------------------------------------
Changes (by Martin Blix Grydeland <martin@…>):

 * status:  new => closed
 * owner:   => Martin Blix Grydeland <martin@…>
 * resolution:   => fixed


Comment:

 In [94a3d071b66d4f7aa7f94660cad42e4d58f25724]:
 {{{
 #!CommitTicketReference repository=""
 revision="94a3d071b66d4f7aa7f94660cad42e4d58f25724"
 Close race on req->wrk clearing introduced in 6f2e1bcd

 The disembarking thread would clear the req->wrk pointer in
 CNT_Request. The req could have already been rescheduled on another
 worker at this point, causing the req->wrk to be cleared while
 processing. Change back to not clearing the pointer for
 REQ_FSM_DISEMBARK (it's already been done under mutex in HSH_Lookup
 anyways).

 Fixes: #1488
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1488#comment:2>
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