LTTNG Session daemon is crashing when i launch lttng

[Kienan Stewart]

Hi Deemanth,

On 4/1/25 11:41 PM, Deemanth P J via lttng-dev wrote:
> Hi all,
> We are new to Lttng,
> We have integrated lttng in my image ,
> whenever I launch lttng we observe hung behavior,
> So launched just lttng session daemon I observe crash,
> Please help us in moving further
> 

The log you have sent doesn't appear to show a crash or a hang. Could 
you describe in the detail the steps to reproduce the issue?

Please consult the bug reporting guideline[1] to make sure you are 
including as much useful information as possible.

thanks,
kienan

[1]: https://lttng.org/community/#bug-reporting-guidelines

> 
> root at sa8797:/usr/bin# lttng-sessiond --verbose
> DBG1 - 17:44:14.742294853 [Main]: [sessiond configuration]
> DBG1 - 17:44:14.742326260 [Main]:       version                        2.13.9
> DBG1 - 17:44:14.742350999 [Main]:       verbose:                       1
> DBG1 - 17:44:14.742374333 [Main]:       verbose consumer:              0
> DBG1 - 17:44:14.742516468 [Main]:       quiet mode:                    False
> DBG1 - 17:44:14.742524437 [Main]:       agent_tcp_port:                [5345, 5354]
> DBG1 - 17:44:14.742531572 [Main]:       application socket timeout:    5
> DBG1 - 17:44:14.742538083 [Main]:       no-kernel:                     False
> DBG1 - 17:44:14.742544645 [Main]:       background:                    False
> DBG1 - 17:44:14.742551260 [Main]:       daemonize:                     False
> DBG1 - 17:44:14.742558083 [Main]:       signal parent on start:        False
> DBG1 - 17:44:14.742564645 [Main]:       tracing group name:            tracing
> DBG1 - 17:44:14.742571885 [Main]:       kmod_probe_list:               None
> DBG1 - 17:44:14.742578708 [Main]:       kmod_extra_probe_list:         None
> DBG1 - 17:44:14.742585374 [Main]:       rundir:                        /var/run/lttng
> DBG1 - 17:44:14.742591937 [Main]:       application socket path:       /var/run/lttng/lttng-ust-sock-8
> DBG1 - 17:44:14.742599385 [Main]:       client socket path:            /var/run/lttng/client-lttng-sessiond
> DBG1 - 17:44:14.742605999 [Main]:       wait shm path:                 /lttng-ust-wait-8
> DBG1 - 17:44:14.742612978 [Main]:       health socket path:            /var/run/lttng/sessiond-health
> DBG1 - 17:44:14.742619593 [Main]:       LTTNG_UST_CLOCK_PLUGIN:        None
> DBG1 - 17:44:14.742626156 [Main]:       pid file path:                 /var/run/lttng/lttng-sessiond.pid
> DBG1 - 17:44:14.742633551 [Main]:       lock file path:                /var/run/lttng/lttng-sessiond.lck
> DBG1 - 17:44:14.742640166 [Main]:       session load path:             None
> DBG1 - 17:44:14.742646728 [Main]:       agent port file path:          /var/run/lttng/agent.port
> DBG1 - 17:44:14.742653551 [Main]:       consumerd32 path:              /var/run/lttng/ustconsumerd32
> DBG1 - 17:44:14.742660114 [Main]:       consumerd32 bin path:          Unknown
> DBG1 - 17:44:14.742666624 [Main]:       consumerd32 lib dir:           Unknown
> DBG1 - 17:44:14.742673812 [Main]:       consumerd32 err unix sock path:/var/run/lttng/ustconsumerd32/error
> DBG1 - 17:44:14.742680478 [Main]:       consumerd32 cmd unix sock path:/var/run/lttng/ustconsumerd32/command
> DBG1 - 17:44:14.742688864 [Main]:       consumerd64 path:              /var/run/lttng/ustconsumerd64
> DBG1 - 17:44:14.742698916 [Main]:       consumerd64 bin path:          /usr/lib/lttng/libexec/lttng-consumerd
> DBG1 - 17:44:14.742705478 [Main]:       consumerd64 lib dir:           /usr/lib
> DBG1 - 17:44:14.742712353 [Main]:       consumerd64 err unix sock path:/var/run/lttng/ustconsumerd64/error
> DBG1 - 17:44:14.742719020 [Main]:       consumerd64 cmd unix sock path:/var/run/lttng/ustconsumerd64/command
> DBG1 - 17:44:14.742725947 [Main]:       kconsumerd path:               /var/run/lttng/kconsumerd
> DBG1 - 17:44:14.742732666 [Main]:       kconsumerd err unix sock path: /var/run/lttng/kconsumerd/error
> DBG1 - 17:44:14.742739228 [Main]:       kconsumerd cmd unix sock path: /var/run/lttng/kconsumerd/command
> DBG1 - 17:44:14.742748656 [Main]: Starting lttng-sessiond {3cf95868-38f8-494d-963a-0c83c13262dd} (in sessiond_uuid_log() at ../../../../lttng-tools-2.13.9/src/bin/lttng-sessiond/main.c:1437)
> DBG1 - 17:44:14.743890166 [Main]: Resetting run_as worker signal handlers to default (in reset_sighandler() at ../../../lttng-tools-2.13.9/src/common/runas.c:1377)
> DBG1 - 17:44:14.743934593 [Main]: run_as signal handler set for SIGTERM and SIGINT (in set_worker_sighandlers() at ../../../lttng-tools-2.13.9/src/common/runas.c:1438)
> 
> 
> 
> Thanks,
> Deemanth PJ
>