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Bug #1184

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CK

can't report find any system calls with lttng list --kernel --syscall

Bug #1184: can't report find any system calls with lttng list --kernel --syscall

Added by Colin King almost 7 years ago. Updated almost 7 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Target version:
-
Start date:
05/21/2019
Due date:
% Done:

0%

Estimated time:

Description

Steps to reproduce:

sudo lttng create test
sudo lttng list --kernel --syscall

Output:

System calls:
-------------

.. and no system calls reported(!?). Tested against Ubuntu Bionic with mainline kernels from 5.1 down to 4.8 on amd64 and i386 from https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D - interestingly pre-4.8 kernels this works fine. Was unsuccessful in bisecting this because 4.7-rcX kernels break in the lttng module build.

Using lttng-modules-dkms 2.10.5-1ubuntu1.2

Files

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config-4.15.0-50-generic (214 KB) config-4.15.0-50-generic Colin King, 05/22/2019 12:38 PM
0001-Fix-initialize-syscall-table-when-kernel-tracer-is-l.patch (1.54 KB) 0001-Fix-initialize-syscall-table-when-kernel-tracer-is-l.patch Fix: initialize syscall table when kernel tracer is lazily initialized Mathieu Desnoyers, 05/23/2019 12:09 PM
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