Regression - gdb hang when 'thread apply all bt full' is used

Brian Murray brian@ubuntu.com
Wed May 3 18:54:00 GMT 2017


On Tue, Apr 04, 2017 at 11:22:49AM -0700, Brian Murray wrote:
> I've reported a bug[1] regarding the issue I am seeing but briefly the
> problem is that gdb is hanging (using 100% CPU and not returning
> anything) when retracing core dumps from vim on Ubuntu 16.10 and the
> command 'thread apply all bt full' is issued.
> 
> The most recent version of gdb which I've recreated the problem with is:
> 
> GNU gdb (Ubuntu 7.12.50.20170314-0ubuntu1) 7.12.50.20170314-git
> 
> I believe this is a regression because this problem did not manifest
> with gdb version 7.9, and first started happening with gdb version 7.10.
> 
> Full details can be found in the bug report and I'm happy to help dig
> into this further.
> 
> [1] https://sourceware.org/bugzilla/show_bug.cgi?id=21324

I've now tested this with gdb version:

GNU gdb (Ubuntu 7.99.90.20170502-0ubuntu1) 7.99.90.20170502-git

and the problem is still occurring. Is there anything I can do to
investigate the source of this bug?

Thanks!
--
Brian Murray



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