Date: Mon, 15 Nov 1999 12:13:18 -0500 (EST) From: Thomas David Rivers <rivers@dignus.com> To: freebsd-stable@freebsd.org Subject: More on my panic... (panic in pmap_pte_quick()) Message-ID: <199911151713.MAA01202@lakes.dignus.com>
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Well - I had a suggestion to recompile the
loadable modules. So, I recompiled the linux
module with -g.
Suddenly, I now can get a traceback from DDB.
I'm now getting a panic in pmap_pte_quick() (from pmap.c),
with the following traceback:
pmap_pte_quick()+12
pmap_ts_referenced()
vm_pageout_page_stats()
vm_pageout()
kproc_start()
fork_trampoline()
The particular instruction is:
movl 0(%edx,%eax,4),%ecx
and %edx is the bad address, (%eax has 0x23...)
I believe comes from the line (since we're only at offset +12):
if (pde = (unsigned) pmap->pm_pdir[va >> PDRSHIFT]) {
that is, the pmap parm to pmap_pte_quick seems to be bad.
This pmap parm comes from Queue pointed to by ppv; which comes
from pa_to_pvh(pa) - pa was passed in...
Has anyone seen anything like this?
- Dave Rivers -
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