#930124 light-locker: trap in dmesg from light-locker

Package:
light-locker
Source:
light-locker
Description:
simple screen locker for lightDM display manager
Submitter:
E V
Date:
2025-03-30 17:09:02 UTC
Severity:
normal
#930124#5
Date:
2019-06-07 14:53:20 UTC
From:
To:
Dear Maintainer,

Seeing a trap in dmesg everytime I start an xfce4 session, such as:

traps: light-locker[1559] trap int3 ip:7f171fe6bc75 sp:7fffc795c210 error:0
in libglib-2.0.so.0.5800.3[7f171fe33000+7e000]

This is running in qemu-kvm q35 instance with cpus set as native which is an
Intel E5-2640. Running xfce4 via xrdp from a mac running the microsoft
remote desktop client.

#930124#10
Date:
2022-02-18 16:34:43 UTC
From:
To:
Interestingly, I'm seeing this bug years later in a qemu-kvm instance with i440fx chipset, qxl graphics, SeaBIOS bios, running the latest Bunsenlabs flavor on top of Debian 11. Bunsenlabs is based on Openbox and uses lightdm and light-locker.

It seems to happen frequently when starting a session, but also can happen later on in the session, possibly due to invocation to lock the screen (which seems to happen irregularly/infrequently, possibly because I'm using a VM and not at the console).

The example log entry below was associated with a crash of the desktop environment, although the VM was busy at the time and I haven't ruled out that the crash was related to something else.

Example log entry:

Feb 17 19:46:34 vibrio kernel: [352462.995091] traps: light-locker[1223914] trap int3 ip:7f2e61ea6ca7 sp:7ffe1f16b0f0 error:0 in libglib-2.0.so.0.6600.8[7f2e61e6a000+88000]

Example from a session start:

Feb 13 00:23:09 vibrio kernel: [   50.322781] traps: light-locker[1523] trap int3 ip:7ff84c824ca7 sp:7fff2a3fa7e0 error:0 in libglib-2.0.so.0.6600.8[7ff84c7e8000+88000]

Note the hex numbers related to libglib-2.0.so.0 are different.

#930124#15
Date:
2025-03-30 16:59:30 UTC
From:
To:
Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation? normal boot
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead? no error

*** End of the template - remove these template lines ***