[haiku-bugs] Re: [Haiku] #8345: PANIC: ASSERT FAILED ... x86/paging/pae/x86VMTranslationMapPAE.cpp:231

  • From: "anevilyak" <trac@xxxxxxxxxxxx>
  • Date: Tue, 10 Jul 2012 12:47:19 -0000

#8345: PANIC: ASSERT FAILED ... x86/paging/pae/x86VMTranslationMapPAE.cpp:231
   Reporter:  kallisti5      |      Owner:  bonefish
       Type:  bug            |     Status:  assigned
   Priority:  critical       |  Milestone:  R1/alpha4
  Component:  System/Kernel  |    Version:  R1/Development
 Resolution:                 |   Keywords:  x86VMTranslationMapPAE
 Blocked By:                 |   Blocking:
Has a Patch:  0              |   Platform:  x86

Comment (by anevilyak):

 Replying to [comment:9 kallisti5]:
 > Is this a "multi-cpu-smp" issue or strictly a "hyperthreading cpu"
 issue? SeanCollins, do you have a Pentium 4 HT cpu, or a multi-core cpu?

 As another data point, quad core w/ hyperthreading here (ergo 8 CPUs
 visible to the OS), and I've never seen this under all kinds of punishing
 workloads. That having been said, 8GB of physical RAM is available, so if
 it's the low memory condition triggering it, then I'm not easily going to
 hit that. However, if Ingo's theory about something else overwriting the
 page tables is correct, then it seems plausible that a particular
 misbehaving driver in your case might be triggering it, else one would
 expect it to be much more widespread. The type of CPUs involved really
 doesn't have much to do with how the memory mapping's handled per se
 (excepting the obvious availability or absence of PAE), and from a
 multitasking standpoint, if anything HT should be less strenuous than true
 multicore since the circumstances under which it can multitask are more

Ticket URL: <http://dev.haiku-os.org/ticket/8345#comment:10>
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