LTTng bugs repository

04/23/2024

10:36 AM LTTng-UST Revision 97572c04 (lttng-ust): Introduce LTTNG_UST_MAP_POPULATE_POLICY environment variable

Problem Statement
-----------------
commit 4d4838bad480 ("Use MAP_POPULATE to reduce pagefault when available")
was ... Mathieu Desnoyers

04/19/2024

11:19 AM LTTng-UST Revision 4b01076f (lttng-ust): Add close_range wrapper to liblttng-ust-fd.so

glibc 2.34 implements close_range(2), which is used by the ssh client
(amongst others). This needs to be overridden t... Mathieu Desnoyers

04/11/2024

04:18 PM Userspace RCU Revision 5307e3ab (userspace-rcu): ppc: Document cache line size choice

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I63603aaf5529e9a7810cfeffe19f32aea0dd13df Mathieu Desnoyers

04:09 PM LTTng-modules Revision 18fd6442 (lttng-modules): ring buffer: Use cpu_dcache_is_aliasing()

Upstream Linux commit 8690bbcf3b7 ("Introduce cpu_dcache_is_aliasing()
across all architectures") allows checking whe... Mathieu Desnoyers

01:16 PM LTTng-UST Bug #1412 (Resolved): Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

Marking as resolved on the LTTng-UST side.
This ends up being an issue with 0-length arrays/sequences alignment ha... Mathieu Desnoyers

11:47 AM LTTng-UST Bug #1412: Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

Which version of Trace Compass did you try it with ? Can you try with latest to see if there is still an issue ? Mathieu Desnoyers

09:50 AM LTTng-UST Bug #1412: Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

Patch fixing the issue for Babeltrace 1.5. It is EOL, so do not expect any release with this fix. Please use Babeltra... Mathieu Desnoyers

09:31 AM LTTng-UST Bug #1412: Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

I reproduced on x86-64 by applying this diff to lttng-ust. Mathieu Desnoyers

09:21 AM LTTng-UST Bug #1412: Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

Which version of Babeltrace do you use to reproduce ? Does it reproduce with Babeltrace 2 ?
I suspect an issue wit... Mathieu Desnoyers

04/10/2024

04:21 PM LTTng-UST Bug #1412: Trace decoding fails for trace generated on aarch64 with ctf_sequence using _length_type of uint32_t

Also can you reproduce with updated versions of lttng-ust and lttng-tools 2.13 ? Mathieu Desnoyers