BIND 10 #707: b10-resolver failure

[BIND 10 Development]

#707: b10-resolver failure
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           Reporter:  jreed         |                      Owner:
               Type:  defect        |                     Status:  new
           Priority:  major         |                  Milestone:
          Component:  Unclassified  |                   Keywords:
          Sensitive:  0             |  Estimated Number of Hours:  0
Add Hours to Ticket:  0             |                  Billable?:  1
        Total Hours:  0             |                  Internal?:  0
------------------------------------+---------------------------------
 Not sure what caused this b10-resolver to exit with SEGV.

 I am confused why question generates different upstream questions and one
 question results in multiple responses. Is this an error too?

 Here is the closest lines in verbose output:

 {{{

 [b10-resolver] Got a DNS message
 [b10-resolver] received a message:
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21919
 ;; flags: rd ; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

 ;; QUESTION SECTION:
 ;external.ak.fbcdn.net. IN A

 [b10-resolver] Processing normal query
 [b10-resolver] Try out cache first (started by incoming event)
 [b10-resolver] Message not found in cache, starting recursive query
 [b10-resolver] doLookup: try cache
 [b10-resolver] Sending upstream query (external.ak.fbcdn.net. IN A
 ) to 127.0.0.1
 [b10-resolver] Timeout, resending query
 [b10-resolver] Sending upstream query (profile.ak.fbcdn.net. IN A
 ) to 127.0.0.1
 [b10-resolver] Timeout, resending query
 [b10-resolver] Sending upstream query (photos-e.ak.fbcdn.net. IN A
 ) to 127.0.0.1

 [b10-resolver] Timeout, resending query
 [b10-resolver] Sending upstream query (external.ak.fbcdn.net. IN A
 ) to 127.0.0.1
 [b10-resolver] sending a response (442bytes):
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3781
 ;; flags: qr rd ra ; QUESTION: 1, ANSWER: 11, AUTHORITY: 9, ADDITIONAL: 0

 ;; QUESTION SECTION:
 ;photos-e.ak.fbcdn.net. IN A

 ;; ANSWER SECTION:
 photos-e.ak.fbcdn.net. 895 IN CNAME
 photos-a.ak.facebook.com.edgesuite.net.
 photos-a.ak.facebook.com.edgesuite.net. 4798 IN CNAME a995.mm1.akamai.net.
 a995.mm1.akamai.net. 20 IN A 69.31.72.194
 a995.mm1.akamai.net. 20 IN A 69.31.72.139
 a995.mm1.akamai.net. 20 IN A 69.31.72.145
 a995.mm1.akamai.net. 20 IN A 69.31.72.147
 a995.mm1.akamai.net. 20 IN A 69.31.72.169
 a995.mm1.akamai.net. 20 IN A 69.31.72.176
 a995.mm1.akamai.net. 20 IN A 69.31.72.178
 a995.mm1.akamai.net. 20 IN A 69.31.72.184
 a995.mm1.akamai.net. 20 IN A 69.31.72.193


 ;; AUTHORITY SECTION:
 mm1.akamai.net. 1798 IN NS n7mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n4mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n3mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n2mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n5mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n0mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n6mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS a0mm1.akamai.net.
 mm1.akamai.net. 1798 IN NS n1mm1.akamai.net.

 [b10-resolver] Timeout, resending query
 [b10-resolver] Sending upstream query (profile.ak.fbcdn.net. IN A
 ) to 127.0.0.1
 [b10-resolver] sending a response (308bytes):
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21919
 ;; flags: qr rd ra ; QUESTION: 1, ANSWER: 4, AUTHORITY: 9, ADDITIONAL: 0

 ;; QUESTION SECTION:
 ;external.ak.fbcdn.net. IN A

 ;; ANSWER SECTION:
 external.ak.fbcdn.net. 2472 IN CNAME external.ak.fbcdn.net.edgesuite.net.
 external.ak.fbcdn.net.edgesuite.net. 4798 IN CNAME a1920.g.akamai.net.
 a1920.g.akamai.net. 20 IN A 63.80.138.48
 a1920.g.akamai.net. 20 IN A 63.80.138.67

 ;; AUTHORITY SECTION:
 g.akamai.net. 1799 IN NS n4g.akamai.net.
 g.akamai.net. 1799 IN NS n7g.akamai.net.
 g.akamai.net. 1799 IN NS n6g.akamai.net.
 g.akamai.net. 1799 IN NS a0g.akamai.net.
 g.akamai.net. 1799 IN NS n5g.akamai.net.
 g.akamai.net. 1799 IN NS n3g.akamai.net.
 g.akamai.net. 1799 IN NS n0g.akamai.net.
 g.akamai.net. 1799 IN NS n1g.akamai.net.
 g.akamai.net. 1799 IN NS n2g.akamai.net.

 [b10-resolver] sending a response (38bytes):
 ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 24087
 ;; flags: qr rd ra ; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

 ;; QUESTION SECTION:
 ;profile.ak.fbcdn.net. IN A

 [bind10] Process b10-resolver (PID 16152) terminated, exit status = 139

 }}}

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Ticket URL: <https://bind10.isc.org/ticket/707>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development