BIND 10 #1679: Auto-generate backtraces & crash reports

[BIND 10 Development]

#1679: Auto-generate backtraces & crash reports
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            Reporter:  vorner        |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  major         |                    Milestone:  New
           Component:  Unclassified  |  Tasks
           Sensitive:  0             |                     Keywords:
         Sub-Project:  Core          |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 It would be good if whenever a process crashes, a crash report with some
 useful information is produced and saved somewhere, noted in a log and the
 admin is asked to send it. The idea is to use whatever is available in the
 system to get the information, for example use gdb to attach to the
 process and get the information or use some built-in methods. The crashing
 process could have a handler for registered all reasonable fatal signals
 and call a shell script with it's PID and name and the script would write
 down system information, call gdb on the PID, produce the backtrace, etc…

 It might make sense to register the signals for python too (in case it
 crashes in the wrapper code) and make sure any uncaught exceptions are
 caught at the highest level and written down to a file.

 I attach a file which does that (from one of my own projects), it is
 slightly different, it produces the backtrace to the screen and leaves the
 gdb running, but it can illustrate the idea. While this relies on having
 gdb installed on the system and having debug information compiled in
 (which we could enable by default), it would at least increase the chance
 of getting useful bug report and make it easier for a user to generate
 them.

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Ticket URL: <http://bind10.isc.org/ticket/1679>
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