Sam Leffler writes: > On Mar 5, 2004, at 8:22 AM, Andrew Gallatin wrote: > > I've been getting this panic off+on for >9 months but haven't been able > to characterize it and/or narrow down the cause. I mostly see it on an > NFS server. For me it seemed to always happen when a particular kva was used. (0xc86ce000). It did not matter if I used my real driver, or a contrived 20-line test case that just malloc'ed a bunch of memory at module load. As soon as pmap_enter() was called on that kva, kaboom! But this behaviour stopped when: a) I changed from a non-WITNESS, non-INVARIANTS kernel to a WITNESS and INVARIANTS kernel. a) I upgraded kernel sources from Weds -> Fri It almost smells like something size related. Eg, something is overflowing and corrupting the page tables when the kernel has a particular size or alignment. I'm just curious -- when this happens to you, is it the same KVA that I saw? There is a printf just before the panic which spits out the kva.. DrewReceived on Sun Mar 07 2004 - 05:59:17 UTC
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