[Xquartz-dev] xterm infinite loop at shell exit in 2.7.2_rc3

[Jeremy Huddleston]

You probably hit some command sequence which put xterm into "hold" mode, which is indicated by your initial paragraph.

On May 28, 2012, at 18:39, Tom Lane <tgl at sss.pgh.pa.us> wrote:

> Jeremy Huddleston <jeremyhu at apple.com> writes:
>> http://xquartz.macosforge.org/trac/ticket/557
> 
> Hmm, that doesn't look related to me.  AFAICT, my xterms are being
> spawned with no command-line switches.  Also, that ticket indicates
> the behavior is reproducible, which mine isn't ...
> 
> 			regards, tom lane
> 
> 
>> On May 27, 2012, at 14:35, Tom Lane <tgl at sss.pgh.pa.us> wrote:
> 
>>> I just observed a case of $SUBJECT: I typed control-D to end a shell
>>> session, and bash replied with "Exit", but the xterm window didn't
>>> close as it normally does.  What's more, clicking on the red
>>> window-close button did nothing, which seemed even more surprising.
>>> I looked closer, and found:
>>> 
>>> 1. According to ps, that xterm instance was chewing 100% CPU.  Its
>>> child process was still there, too, but listed as "(bash)", which
>>> I think means it was a zombie.  So this suggests a failure to respond
>>> to SIGCHLD properly.
>>> 
>>> 2. I tried to attach to the process with gdb to get a stack trace.
>>> gdb wouldn't let me (something about an OS/kernel failure).  On
>>> reflection maybe I should have tried with Activity Monitor, but that
>>> didn't occur to me in the heat of the moment.
>>> 
>>> 3. I then tried "kill -ABRT", hoping that would produce a debuggable
>>> core dump.  It stopped the xterm alright, but I can't find a core.
>>> 
>>> Anyway, this is the first time I've seen anything like this, so it
>>> isn't terribly reproducible.  Just mentioning it in case anyone has
>>> seen the like, or has a better idea about how to gather evidence
>>> if it happens again.
>>> 
>>> regards, tom lane
>>> 
>>> _______________________________________________
>>> Xquartz-dev mailing list
>>> Xquartz-dev at lists.macosforge.org
>>> http://lists.macosforge.org/mailman/listinfo.cgi/xquartz-dev
>>> 
> 
> 
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