gnome-system-monitor @3.8.2.1_0 - application crashes when the Resources tab is selected

[dtsaliki@…]

• run gnome-system-monitor

Admins-MacBook-Pro:~ Admin$ gnome-system-monitor

• click on the "Resources' tab and the application crashes with:

libgtop-server(87978,0x7fff77e97310) malloc: *** error for object 0x7fff56aee9c8: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
glibtop: read 2160 bytes: Resource temporarily unavailable

• OS version

Admins-MacBook-Pro:~ Admin$ uname -a
Darwin Admins-MacBook-Pro.local 13.0.0 Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64 x86_64

• XQuartz 2.7.5

• Xcode version 5.0.2

• gnome-system-monitor @3.8.2.1_0

Admins-MacBook-Pro:~ Admin$ port installed gnome-system-monitor 
The following ports are currently installed:
  gnome-system-monitor @3.8.2.1_0 (active)

• libgtop @2.28.5_0

Admins-MacBook-Pro:~ Admin$ port installed libgtop
The following ports are currently installed:
  libgtop @2.28.5_0 (active)

• Port Version: 2.2.1

Admins-MacBook-Pro:~ Admin$ port version
Version: 2.2.1

[dbevans (David B. Evans)]

Thanks for this detailed report and my apology for not replying sooner.

After squinting at the screen a lot and several pots of coffee last night, I was able to gain some further understanding of this problem.

• the problem can be reproduced with the current stable version 3.10.2 and unstable version 3.11.92 (3.12 rc).
• the actual failure is occurring in libgtop's ${prefix}/bin/libgtop_server2 which is running in a separate process.
• location of the failure is in the darwin specific implementation of glibtop_get_netload_p()
• before returning to caller glibtop_get_netload_p() frees a buffer that is passed in as an argument to the function -- this is the failure point.
• working back through the code now to see how this function gets called and how the buffer in question is allocated.

Hopefully will get to the bottom of this soon.

[cooljeanius (Eric Gallager)]

Cc Me!