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

  • From: "bonefish" <trac@xxxxxxxxxxxx>
  • Date: Mon, 01 Oct 2012 23:26:59 -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:  vm pae
 Blocked By:                 |   Blocking:
Has a Patch:  1              |   Platform:  x86

Comment (by bonefish):

 Replying to [comment:22 kallisti5]:
 > I can confirm that this bug still exists on the latest R1A4 RC.
 > So far the following has been established:
 > * Occurs on gcc2 and gcc4 images
 > * Occurs with one or multiple cpu cores

 In your and Sean's comments above I actually read that it doesn't happen
 with only one CPU (one logical CPU). That would be consistent with the
 observations in #7904.

 > * Only occurs when system memory is > 4GB (PAE active)

 AFAICT no one has confirmed yet that on the same machine the problem does
 cease to occur with PAE disabled. #7904 demonstrates that a KDL with the
 analogous stack trace is possible with 32 bit paging. I would consider it
 more likely that the issue occurs only on specific CPU architectures or
 models. It would be nice, if everyone who has tried to reproduce the issue
 could list their corresponding CPU models for positive and negative

 I have a negative for Intel Core i7 860.

 Also, it would be interesting to learn whether the machines that have the
 issue also test positive for #7904. Since that test is much quicker and
 more reliable, it would be more suitable for debugging.

 Replying to [comment:23 leavengood]:
 > I suggest due to the infrequency of this and the required memory to make
 it occur, that we not consider it an alpha4 blocker.

 Sure. If #7904 refers to the same problem, the issue isn't new anyway.

Ticket URL: <http://dev.haiku-os.org/ticket/8345#comment:24>
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