* [RELEASE] LTTng-modules 2.12.0-rc2, 2.11.2, 2.10.14 (Linux kernel tracer)
@ 2020-02-25 20:38 Mathieu Desnoyers
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From: Mathieu Desnoyers @ 2020-02-25 20:38 UTC (permalink / raw)
To: lttng-dev, diamon-discuss, linux-trace-users, lwn, linux-kernel
This release announcement covers all actively maintained branches of the
LTTng-modules Linux kernel tracer, namely:
- LTTng-modules 2.10.14 and 2.11.2 (stable branches),
- LTTng-modules 2.12.0-rc2 (branch currently in release candidate cycle).
The LTTng modules provide Linux kernel tracing capability to the LTTng
* New and noteworthy in these releases:
- Support for kernel 5.6 (currently at 5.6-rc3). It features changes in the
tracepoint instrumentation, and changes in the timekeeping area in
preparation for y2038. The plan here to handle timekeeping changes
and keep backward compatibility is to add forward declarations of
deprecated types locally in lttng-modules for the stable branches.
For the master branch and future 2.13+ releases, we plan to introduce a
type compatibility layer within lttng-modules with typedefs mapping to the
new types when building against recent kernels, and provide backward
compatible typedefs when building against older kernels. Currently,
lttng-modules builds against all vanilla and most distribution Linux
kernels from v3.0 onwards.
- Fix NULL pointer dereference race in the lttng-statedump module. The
return value of task_active_pid_ns() should be checked for NULL to handle
tasks which have exited but were not waited-for yet, which are thus in a
"dead" state. The statedump triggers at trace start and when the command
"lttng regenerate statedump" is issued.
Project website: https://lttng.org
Download link: https://lttng.org/download
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