This keeps happening to one of our multiprocessor servers. About twice
a day.
panic: vm_page_remove(): page not found in hash
mp_lock = 01000001; cpuid = 1; lapic.id = 01000000
boot() called on cpu#1
syncing disks... 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68
giving up on 67 buffers
Uptime: 21h28m53s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
cpu_reset called on cpu#1
cpu_reset: Stopping other CPUs
cpu_reset: Restarting BSP
cpu_reset_proxy: Grabbed mp lock for BSP
cpu_reset_proxy: Stopped CPU 1
FreeBSD bsd10.nyct.net 4.1.1-STABLE FreeBSD 4.1.1-STABLE #0: Fri Oct 20 15:58:40 EDT
2000 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/NYCT i386
We've tweaked some variables in response to this (maxusers?) but it
doesn't seem to do the trick.
It happens most when I do something memory intensive (like stopping and
restarting apache, and all several-hundred children), but it really does
happen quite randomly.
My wild uneducated guess is that both processors are calling vm_page_remove()
on a page and the one that doesn't happen first ends up panic'ing because
it can't find the page anymore.
We're in the process of trying it with a non-SMP kernel, but I figure I'd
put this out early in any case as it's obviously a bug of some kind. If
I really find myself at the end of a rope, I'm going to look to see if it's
a hardware problem.
Thanks
--
Michael Bacarella <[EMAIL PROTECTED]> ;finger address for public key
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