Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [discuss] mmap, mbind and write to mmap'ed memory crashes 2.6.16-rc1[2] on 2 node X86_64 | Date | Sun, 5 Feb 2006 18:03:58 +0100 |
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On Sunday 05 February 2006 17:36, Bharata B Rao wrote: > Hi, > > I am seeing a kernel crash with 2.6.16-rc1 and rc2 but not on any > 2.6.15 kernels (rc and 2.6.15.2). Arch is x86_64. > > The kernel crashes when I run an application which does: > - mmap (0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS) > - mbind the memory to the 1st node with policy MPOL_BIND > - write to that memory > > The crash time log on 2.6.16-rc2 looks like this: > > Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: > <ffffffff801614df>{__rmqueue+63}
There's another report of it. The boot logs seem ok, so I guess mbind broke somehow. I suppose it's related to the mempolicy changes that went into 2.6.16-rc1. I'll try to take a look tomorrow if Christoph doesn't beat it.
OOM with mbind seems to have broken also - it oopses too.
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