LTTng bugs repository

09/01/2026

JG 11:53 AM LTTng-tools Bug #1445 (Resolved): lttng-tools 2.16.0 doesn't compile with musl

The patches are upstream in the @master@ and @stable-2.16@ branches. Thanks! Jérémie Galarneau

08/28/2026

JG 05:58 PM LTTng-tools Bug #1445 (In Progress): lttng-tools 2.16.0 doesn't compile with musl

Thanks for the report! I have reproduced your fixes (with some alterations for the @basename@ argument handling) and put them up on our gerrit.
https://review.lttng.org/c/lttng-tools/+/18618
https://review.lttng.org/c/lttng-tools/+/1... Jérémie Galarneau

05/08/2026

JG 10:48 AM Babeltrace Bug #1439 (In Progress): babeltrace Python bindings segfault on Python 3.14 when reading trace

There won't be anoter release of 1.5 since it's been EOL'ed a while ago.
@mjeanson Can weigh-in on this, but I think the most realistic way forward is to distro-patch the package. AFAIK, that requires someone to open a bug against the... Jérémie Galarneau

10/16/2025

JG 02:02 PM LTTng-tools Revision cfb5c15a (lttng-tools): Fix: sessiond: leak of default attribute channel on channel creation

When creating a channel with default attributes, the "template" containing the
default attributes is never free'd. Modify channel_new_default_attr to return a
RAII wrapper from the sessiond's liblttng-ctl memory management wrappers.
Cha... Jérémie Galarneau

10/10/2025

JG 02:50 PM LTTng-tools Revision 64c1d119 (lttng-tools): Fix: lttng-enable-channels: popt option argument leak

The caller of poptGetOptArg() assumes the ownership of the returned
string. As such, a unique_ptr is used to manage the lifetime of
the option arguments used in lttng-enable-channel.
Change-Id: Ib73e9548b3166df579904c2a82fe3930918e8066
... Jérémie Galarneau

JG 11:14 AM LTTng-tools Revision 26a4b1ef (lttng-tools): Fix: kernel-consumer: prepend kernel TSDL metadata stream with header

Observed issue
==============
When running kernel tracing tests (such as
`tests/regression/tools/clear/test_kernel`) with Babeltrace 2.0, the
tests fail to parse traces.
# ./tests/regression/tools/clear/test_kernel
1..839
#... Jérémie Galarneau

10/09/2025

JG 01:45 PM LTTng-tools Revision 893f666b (lttng-tools): Fix: container-wrapper: add missing comparison operators for _GLIBCXX_DEBUG

Observed issue
==============
When building with -D_GLIBCXX_DEBUG, the build fails with:
In file included from bt2_plugins/event_name/event_name.cpp:8:
In file included from bt2_plugins/event_name/../utils.hpp:11:
In file include... Jérémie Galarneau

JG 11:11 AM LTTng-tools Revision 08cbbcfd (lttng-tools): Fix: stream-info: unaligned access when deserializing

Observed issue
==============
On 32-bit ARM, a crash due to SIGBUS is observed during the
tests/regression/ust/blocking/test_blocking test.
The `lttng` client is killed when accessing the memory_usage
field of a lttng_data_stream_info:... Jérémie Galarneau

10/07/2025

JG 03:44 PM LTTng-tools Revision d960e214 (lttng-tools): Tests fix: clock: erroneous format specifier for clock value

On armhf, the test output log on the CI shows strange test durations:
duration_ms: -622153596000.000000
The culprit is the `clock` application which uses an inadequate
format specifier now that Debian 13 uses 64-bit time (even on
32-b... Jérémie Galarneau

JG 10:50 AM LTTng-tools Revision 9231acf3 (lttng-tools): Fix: lttng-reclaim-memory: check return value of mi_lttng_writer_command_close

Coverity reported CHECKED_RETURN (CID 1635265) indicating that
mi_lttng_writer_command_close() was being called without checking its
return value, whereas it is checked in 25 out of 26 other call sites.
This fix adds a check for the ret... Jérémie Galarneau