[jira] [Work logged] (TS-4790) stale_while_revalidate crashing on task threads.

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-4790?focusedWorklogId=27262&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-27262 ]

ASF GitHub Bot logged work on TS-4790:
--------------------------------------

                Author: ASF GitHub Bot
            Created on: 26/Aug/16 18:43
            Start Date: 26/Aug/16 18:43
    Worklog Time Spent: 10m 
      Work Description: GitHub user jpeach opened a pull request:

    https://github.com/apache/trafficserver/pull/933

    TS-4790: Fix stale_while_revalidate to issue requests on net threads.

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/jpeach/trafficserver fix/4790

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/trafficserver/pull/933.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #933
    
----
commit 97a17df3959f4e4b46a72dab0da0c0338c16c047
Author: James Peach <jp...@apache.org>
Date:   2016-08-26T18:39:29Z

    TS-4790: Fix stale_while_revalidate to issue requests on net threads.

----


Issue Time Tracking
-------------------

            Worklog Id:     (was: 27262)
            Time Spent: 10m
    Remaining Estimate: 0h

> stale_while_revalidate crashing on task threads.
> ------------------------------------------------
>
>                 Key: TS-4790
>                 URL: https://issues.apache.org/jira/browse/TS-4790
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Core
>            Reporter: James Peach
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Seeing this crash:
> {noformat}
> Signal Status:
> siginfo.si_signo:   11 (Segmentation fault)
> siginfo.si_pid:     56                  siginfo.si_uid:     0
> siginfo.si_code:    0x1 (1)             siginfo.si_addr:    0x0000000000000038
> No object mapped at address 0x0000000000000038
> CPU Registers:
> R8 :0x0000000000000000 R9 :0x0000000057c0617a R10:0x146e656fbbaf1913 R11:0x0000000000000246
> R12:0x00002b3c6c015d80 R13:0x0000000001d1e860 R14:0x146e656fbf42a013 R15:0x0000000000000000
> RDI:0x0000000000000020 RSI:0x0000000000000001 RBP:0x00002b3c691d4010 RBX:0x0000000000000000
> RDX:0x00002b3c694d6a30 RAX:0x00002b3c691d4010 RCX:0x00002b3c5b194320 RSP:0x00002b3c694d5dd0
> RIP:0x000000000074676f EFL:0x0000000000010246 CSGSFS:0x0000000000000033 ERR:0x0000000000000004
> TRAPNO:0x000000000000000e OLDMASK:0x0000000000000000 CR2:0x0000000000000038
> Thread 29117, [ET_TASK 1]:
> 0    0x00000000004acb62 crash_logger_invoke(int, siginfo_t*, void*) + 0x72
> 1    0x00002b3c5af8b330 __restore_rt + (nil)
> 2    0x000000000074676f UnixNetVConnection::startEvent(int, Event*) + 0x3f
> 3    0x000000000076d3a0 EThread::process_event(Event*, int) + 0x120
> 4    0x000000000076e05b EThread::execute() + 0x7fb
> 5    0x000000000076ce2a spawn_thread_internal(void*) + 0x4a
> 6    0x00002b3c5af83184 start_thread + 0xc4
> 7    0x00002b3c5bcb737d clone + 0x6d
> 8    0x0000000000000000 0x0 + 0x6d
> {noformat}
> So it is a NULL-dereference in {{UnixNetVConnection::startEvent}}. I suspect the {{stale_while_revalidate_plugin}}.



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