#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. (hrevr1alpha4-44608) > > 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 results. 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> Haiku <http://dev.haiku-os.org> Haiku - the operating system.