[haiku-bugs] Re: [Haiku] #5413: PANIC: page 0x821e7918 has mapping for area 0x86259a00 (0x7ffef000), but has no page table entry

  • From: "anevilyak" <trac@xxxxxxxxxxxx>
  • Date: Tue, 16 Feb 2010 13:02:22 -0000

#5413: PANIC: page 0x821e7918 has mapping for area 0x86259a00 (0x7ffef000), but
has no page table entry
---------------------------+------------------------------------------------
 Reporter:  anevilyak      |       Owner:  bonefish      
     Type:  bug            |      Status:  assigned      
 Priority:  normal         |   Milestone:  R1            
Component:  System/Kernel  |     Version:  R1/Development
 Keywords:                 |   Blockedby:                
 Platform:  All            |    Blocking:                
---------------------------+------------------------------------------------

Comment(by anevilyak):

 Replying to [comment:4 bonefish]:
 > Unfortunately you printed the wrong area. The "area" command resolves
 the given address to the area it is located in and prints that area. If
 you have a pointer to a VMArea structure the "area address <address>"
 syntax has to be used. It would also be interesting to learn something
 about the involved caches -- i.e. the one of the page, the one of the area
 (if different), and the corresponding "cache_tree".
 >

 Whoops. Will remember that if/when I encounter it again.

 > Apparently you have enabled USE_SLAB_ALLOCATOR_FOR_MALLOC. Is the
 problem reproducible when disabling it?

 Will try.

 > Also, since I neither encounter problems with 4 GB memory on real
 hardware, nor with emulated low-memory setups, it would be interesting
 what system you're testing on, and if you have a test you can more or less
 reliably reproduce the problem.

 The panic I've only run into once so far. The segfaults during build
 happen fairly reliably with the haiku tree for me (after building for long
 enough). In any case, 1GB of RAM w/ 200MB trace buffer, dual core
 Athlon64.

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/5413#comment:5>
Haiku <http://dev.haiku-os.org>
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