valgrind

[Michi Henning]

The following program produces 55 errors with valgrind:

int
main()
{
  Display* display = XOpenDisplay(0);
  int major;
  int minor;
  glXQueryVersion(display, &major, &minor);
  XCloseDisplay(display);
}

51 instances in drm_intel_bufmgr_gem_init: Conditional jump or move depends on uninitialised value(s)
2 instances in drm_intel_bufmgr_gem_init: Syscall param ioctl(generic) points to uninitialised byte(s)
2 instances in fun:drmCommandWriteRead: Syscall param ioctl(generic) points to uninitialised byte(s)

The corresponding suppression entries are:

{
  OpenGL-bad-ioctl
  Memcheck:Param
  ioctl(generic)
  fun:ioctl
  fun:drmIoctl
  fun:drm_intel_bufmgr_gem_init
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
}

{
  OpenGL-bad-ioctl-2
  Memcheck:Param
  ioctl(generic)
  fun:ioctl
  fun:drmIoctl
  fun:drmCommandWriteRead
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
}

{
  OpenGL-uninitialized-jump
  Memcheck:Cond
  fun:drm_intel_bufmgr_gem_init
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
}

[Michi Henning (michihenning)]

This is with an Intel Core i7 3770K Ivy Bridge processor, using the onboard HD 4000 graphics.

[Michi Henning (michihenning)]

Here are few more:

{
  Intel-bad-ioctl-3
  Memcheck:Param
  ioctl(generic)
  fun:ioctl
  fun:drmIoctl
  obj:/usr/lib/x86_64-linux-gnu/libdrm_intel.so.1.0.0
  fun:intel_batchbuffer_reset
  fun:intel_batchbuffer_init
  fun:intelInitContext
  fun:brwCreateContext
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
}

{
  Intel-bad-ioctl-4
  Memcheck:Param
  ioctl(generic)
  fun:ioctl
  fun:drmIoctl
  obj:/usr/lib/x86_64-linux-gnu/libdrm_intel.so.1.0.0
  fun:intel_batchbuffer_init
  fun:intelInitContext
  fun:brwCreateContext
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
  fun:glXCreateContext
}

{
   Intel-bad-ioctl-5
   Memcheck:Param
   ioctl(generic)
   fun:ioctl
   fun:drmIoctl
   obj:/usr/lib/x86_64-linux-gnu/libdrm_intel.so.1.0.0
   fun:brw_init_caches
   fun:brw_init_state
   fun:brwCreateContext
   obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
   obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
   obj:/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
   obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
   obj:/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
   fun:glXCreateContext
}

[Chris Wilson (ickle)]

You could also just rebuild libdrm with valgrind support.

[Simon Quigley (tsimonq2)]

Is this bug still valid?

I am asking because this is dated 2013.

[Launchpad Janitor (janitor)]

[Expired for mesa (Ubuntu) because there has been no activity for 60 days.]