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Bug #14520

closed

VM permanently tries to read /dev/shm/lttng-ust-wait-5

Added by Michael Hackett over 8 years ago. Updated about 8 years ago.

Status:
Duplicate
Priority:
High
Assignee:
-
Category:
libvirt
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
rados
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

Ubuntu 14.04
Ceph 94.5-1trusty
liblttng-ust0
libvert
Bug is open with Canonical: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1432644/

Logs are constantly spammed with:
[4220163.899438] type=1400 audit(1447230173.207:7763726): apparmor="DENIED" operation="open" profile="libvirt-" name="/run/shm/lttng-ust-wait-5" pid=69948 comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=111 ouid=0

VM permanently tries to read /dev/shm/lttng-ust-wait-5

When used with enforced apparmor profile, this results in logs filled with denied messages.
As I understand it, liblttng is here to allow tracing / debugging in python (not sure). Maybe virt-manager shouldn't be shipped with debugging mode enabled by default, or maybe it is a perfectly legitimate feature and the apparmor profile should be updated.

lttng is disabled in Infernalis by default, but need to address issue being seen in Hammer.

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