[ltt-dev] lttng-tools testsuite hangs on PandaBoard

[David Goulet]

Hi Avik,

We ran into some pretty serious deadlocks about 2 weeks ago. We've fixed them
upstream (after the release of pre14).

Is it possible for you to test the HEAD of our git tree?

git clone git://git.lttng.org/lttng-tools.git

Please note that we had no testing on ARM up to this point. We are still on
pre-release "cycle" meaning that we are currently adding more features,
optimizing and bug fixes.

However, ARM will certainly be a supported architecture for stable releases so
your feedbacks are greatly appreciated in order to fix any ARM issues.

If you have no luck with the git tree, please feel free to come on our IRC
channel on OFTC network channel #lttng.

Thanks!
David

On 11-10-17 06:04 AM, Avik Sil wrote:
> Hi,
> 
> I'm trying to execute lttng-tools testsuite on ARM (PandaBoard) by
> running 'make check'. It hangs midway:
> 
> [...]
> ./runall.sh
> 
> Testing Sessions:
> -----------
> Create 1 session test1: OK
> Validating created session test1: OK
> Destroy 1 session test1: OK
> Two session with same name: (session already exists) OK
> Fuzzing create_session arguments: OK
> Fuzzing destroy_session argument: OK
> Creating 10000 sessions: OK
> Destroying 10000 sessions: OK
> 
> Testing kernel data structures:
> -----------
> Create kernel session: OK
> Validating kernel session: OK
> Create kernel metadata: OK
> Validating kernel session metadata: OK
> Creating kernel channel: OK
> Validating kernel channel: OK
> Creating kernel event: OK
> Validating kernel event: OK
> Creating kernel stream: OK
> Validating kernel stream: OK
> 
> --------------------------------------------------
> Kernel tracer - Testing lttng client (liblttngctl)
> --------------------------------------------------
> Starting session daemon... OK
> 
> Testing tracing kernel events:
> -----------
> Creating tracing session (/tmp/tmp.Xx620viExA): OK
> Creating session handle: OK
> [hangs at this point]
> 
> Now checking the processes tells that lt-ltt-sessiond daemon has become
> dormant:
> 
> # ps -ef | grep ltt
> root      5933  5930  0 09:47 pts/0    00:00:00 /bin/bash ./lttng/runall.sh
> root      5934  5933  0 09:47 pts/0    00:00:00 /bin/bash
> ./lttng/run-kernel-tests.sh
> root      5960     1  0 09:47 ?        00:00:00
> /root/lttng/lttng-tools/pkg-source/lttng-tools-2.0~pre/ltt-sessiond/.libs/lt-ltt-sessiond
> --daemonize --quiet
> root      6003  5960  0 09:47 ?        00:00:00 [lt-ltt-sessiond] <defunct>
> root      6011  1326  0 09:54 ttyO2    00:00:00 grep --color=auto ltt
> 
> Please help me solving this issue.
> 
> Regards,
> Avik
> 
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