On Tue, Dec 29, 2009 at 10:37:47AM -0800, Matthew Dillon wrote:
> Here's a new patch to try. I added a bunch more assertions to
> try to catch it and I also check to make sure PG_ZERO'd pages
> are zero (which is expensive but...).
>
> fetch http://apollo.backplane.com/DFlyMisc/pmap02.patch
I had to update to the latest source to apply it cleanly. The backtrace
seems to remain the same as before. The kernel and vmcore are at
~y0netan1/crash/{kern,vmcore}.24.
#4 0xc01a4b6a in panic (fmt=0xc0316e5e "assertion: %s in %s")
at /usr/src/sys/kern/kern_shutdown.c:744
#5 0xc02ec4d1 in pmap_remove_entry (pmap=0xd6ea5394,
ptq=<value optimized out>, va=711565312, info=0xdbbd2c2c)
at /usr/src/sys/platform/pc32/i386/pmap.c:1578
#6 pmap_remove_pte (pmap=0xd6ea5394, ptq=<value optimized out>, va=711565312,
info=0xdbbd2c2c) at /usr/src/sys/platform/pc32/i386/pmap.c:1662
#7 0xc02eca9d in pmap_remove_page (pmap=0xd6ea5394, sva=711565312,
eva=711569408) at /usr/src/sys/platform/pc32/i386/pmap.c:1690
#8 pmap_remove (pmap=0xd6ea5394, sva=711565312, eva=711569408)
at /usr/src/sys/platform/pc32/i386/pmap.c:1731
#9 0xc02ad2fb in vm_map_madvise (map=0xd6ea5310, start=711565312,
end=711569408, behav=10, value=0) at /usr/src/sys/vm/vm_map.c:1793
#10 0xc02b7ca3 in sys_vmspace_mcontrol (uap=0xdbbd2cf0)
at /usr/src/sys/vm/vm_vmspace.c:470
#11 0xc02f0339 in syscall2 (frame=0xdbbd2d40)
at /usr/src/sys/platform/pc32/i386/trap.c:1361
#12 0xc02db046 in Xint0x80_syscall ()
at /usr/src/sys/platform/pc32/i386/exception.s:876