LTTng bugs repository

05/23/2025

04:05 PM LTTng-tools Revision e08b4e7f (lttng-tools): tests: Fix `test_select_poll_epoll` on armhf

On the CI, the test fails as follows:
not ok 94 - Found 0 events matching 'ppoll'
---
duration_ms:... Kienan Stewart

04:02 PM LTTng-tools Revision 05c69ea5 (lttng-tools): tests: Do not expect `epoll_wait_*` on arm64 and riscv64

In the CI, rootbuilds on arm64 failed
`tests/regression/kernel/test_select_poll_epoll` as follows:
```
epoll_wait_in... Kienan Stewart

05/20/2025

03:49 PM LTTng Bug #1427 (In Progress): lttng-tools fails to compile with libxml2 2.14.0+

Hi Peter,
thanks for the bug report. This issue has been fixed upstream in lttng-tools master https://github.com/l... Kienan Stewart

02:10 PM LTTng-modules Revision efaade75 (lttng-modules): Fix missing override when CONFIG_COMPAT_OLD_SIGACTION is not defined

On both arm64 and x86_64, building lttng-modules with a kernel that
does not have `CONFIG_COMPAT_OLD_SIGACTION` defin... Kienan Stewart

05/18/2025

02:14 PM LTTng-tools Revision d0a9fdb0 (lttng-tools): tests: tests.serial: polled writing and long-running test abort

Prior to this change, the serial test runner would not output anything
between the start of a test and the end. In th... Kienan Stewart

01:08 PM LTTng-tools Revision 1085aab2 (lttng-tools): tests: Avoid hang in `test_python_logging` when test application fails

Change-Id: I61eeb3822e5ebdb87847a2f6f510085e11973c10
Signed-off-by: Kienan Stewart <kstewart@efficios.com>
Signed-off... Kienan Stewart

01:08 PM LTTng-tools Revision 846d9f3a (lttng-tools): Tests: disable coredumps during `test_ppoll_fds_buffer_overflow`

This test exepects the test application to segfault. When coredumps
are enabled, this may be picked up by tools that ... Kienan Stewart

05/12/2025

04:51 PM Userspace RCU Revision 96035924 (userspace-rcu): Fix: Use bitfield static assert with GCC < 7.1.0

When compiling lttng-tools 2.14 with urcu and gcc 6.4.0, the
compilation fails with the following message:
18:14... Kienan Stewart

04:50 PM Userspace RCU Revision 5abb1e7a (userspace-rcu): Fix: Allow compile-time checks for GCC 5.1

The comments indicate that GCC 5.1 should work.
Change-Id: I902941e4e1af14c25a921d7323839a8e3953da08
Signed-off-by: ... Kienan Stewart

05/09/2025

08:38 AM LTTng-modules Revision ca0e1307 (lttng-modules): Fix channel_backend lookup during `ring_buffer_flush_or_populate_packet`

Observed issue
==============
In LTTng-tools, `tests/regression/tools/snapshot/test_kernel` fails on
arm64 as follow... Kienan Stewart