linux-kernel - [RELEASE] LTTng-modules 2.13.21 and 2.14.2 (Linux kernel tracer)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <3ca8430a-d2c1-4fc4-8fa7-bc3fa53ee82e@efficios.com>
Date: Mon, 6 Oct 2025 11:50:55 -0400
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: lttng-dev@...ts.lttng.org, diamon-discuss@...ts.linuxfoundation.org,
 linux-trace-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RELEASE] LTTng-modules 2.13.21 and 2.14.2 (Linux kernel tracer)

Hi,

Those LTTng-modules stable releases mainly fix an missing preemption off
issue with system call instrumentation when using LTTng-modules against
a Linux kernel v6.13 or more recent, with preemptible kernels (PREEMPT
or PREEMPT_LAZY configurations). Users of LTTng-modules with those
configurations should upgrade.

This issue is the result of an upstream kernel change (introduction of
faultable syscall tracepoints), without the introduction of the
corresponding changes in LTTng-modules.

One effect of this bug is corruption of per-cpu linked-lists under
load. It also possible that the ring buffer corrupts itself because
of unexpected producer migration.

The other change in those releases is the introduction of a wrapper for
`get_pfnblock_migatetype` to build against v6.17 kernels.

* New in this release:

2025-10-06 LTTng modules 2.14.2
         * Fix: Add wrapper for `get_pfnblock_migatetype`
         * Fix: Protect syscall probes with preemption disable

2025-10-06 LTTng modules 2.13.21
         * Fix: Add wrapper for `get_pfnblock_migatetype`
         * Fix: Protect syscall probes with preemption disable

Thanks,

Mathieu

Project website: https://lttng.org
Documentation: https://lttng.org/docs
Download link: https://lttng.org/download

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com