On Wed, Oct 1, 2014 at 12:30 PM, bruce <badoug...@gmail.com> wrote: > Hi guys. > > running an app in both fed/centos test machines and getting a seg fault. > > I know this is a bit off topic, but it does related to segfault > crashes, and how to get/setup the data to analyze track down the > offending code! > > to begin, > the system has /var/log/messages with > Sep 30 11:40:57 dell2 kernel: courseSectionDa[3270]: segfault at 868 > ip 00007f80e8e1e410 sp 00007fffe404d0c8 error 4 in > libgearman.so.8.0.0[7f80e8e18000+26000] > > isn't this saying the crash is coming from the libgearman.so.8.0.0 as > opposed to the parent php app which uses the gearman lib?? > > and assuming that this is the case, and i installed the gearman so > with yum (without source) is there a way I can setup the system to > capture the crash data to do an analysis of the crash?? > > the parent app runs multiple (1000s) of times, and somewhere the crash > occurs.. > > thanks guys.. > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org >
you may find tools like strace to see what, in terms of system calls, preceded the crash. note the -f option to follow new sub processes. pstree can be fun, ... try, ... watch "pstree -p 1638" where '1638' is a processes spewing subprocesses of interest. hth, ... sudo yum install strace watch pstree
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