Re: port-i386/41934: assertion "(opte & (PG_V | PG_W)) != PG_W" failed

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR port-i386/41934; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%gnats.netbsd.org@localhost, gnats-admin%NetBSD.org@localhost,
        netbsd-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: port-i386/41934: assertion "(opte & (PG_V | PG_W)) != PG_W"
 failed
Date: Sat, 13 Nov 2010 19:53:24 +0100

 On Mon, Aug 24, 2009 at 07:35:00PM +0000, Manuel.Bouyer%lip6.fr@localhost 
wrote:
 > >Number:         41934
 > >Category:       port-i386
 > >Synopsis:       assertion "(opte & (PG_V | PG_W)) != PG_W" failed
 > >Confidential:   no
 > >Severity:       critical
 > >Priority:       high
 > >Responsible:    port-i386-maintainer
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Mon Aug 24 19:35:00 +0000 2009
 > >Originator:     Manuel Bouyer
 > >Release:        NetBSD 5.0_STABLE
 > >Organization:
 > >Environment:
 > System: NetBSD disco 5.0_STABLE NetBSD 5.0_STABLE (DISCO) #5: Sun Aug 16 
 > 00:00:37 MEST 2009 
 > bouyer@disco:/home/bouyer/src-5/src/sys/arch/i386/compile/obj/DISCO i386
 > Architecture: i386
 > Machine: i386
 > >Description:
 >      This (UP) NFS server paniced with:
 > panic: kernel diagnostic assertion "(opte & (PG_V | PG_W)) != PG_W" failed: 
 > file "/home/bouyer/src-5/src/sys/arch/x86/x86/pmap.c", line 637
 >      I didn't try to get stack trace from ddb, but I do have a core dump.
 >      I have seen the same panic on another NFS server on another site,
 >      ddb didn't get much info:
 > panic: kernel diagnostic assertion "(opte & (PG_V | PG_W)) != PG_W" failed: 
 > file "/home/bouyer/src-5/src/sys/arch/x86/x86/pmap.c", line 637
 > Begin traceback...
 > uvm_fault(0xcef0f008, 0x72753000, 1) -> 0xe
 > fatal page fault in supervisor mode
 > trap type 6 code 0 eip c03f0311 cs 8 eflags 10246 cr2 72753f70 ilevel 0
 > panic: trap
 > Faulted in mid-traceback; aborting...
 > dumping to dev 18,1 offset 8
 > dump i/o error
 > 
 > 
 > >How-To-Repeat:
 >      Run NFS with lots of clients ?
 
 Also seen on a general-purpose server (no NFS on this one, so not NFS-related)
 with a:
 cpu0: Intel (686-class), 3192.10 MHz, id 0xf33
 cpu0: features 0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
 cpu0: features 0xbfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
 cpu0: features 0xbfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,SBF>
 cpu0: features2 0x41d<SSE3,DTES64,MONITOR,DS-CPL,CID>
 cpu0: "Intel(R) Pentium(R) 4 CPU 3.20GHz"
 cpu0: I-cache 12K uOp cache 8-way, D-cache 16KB 64B/line 8-way
 cpu0: L2 cache 1MB 64B/line 8-way
 cpu0: ITLB 4K/4M: 64 entries          
 cpu0: DTLB 4K/4M: 64 entries
 cpu0: Initial APIC ID 0
 cpu0: Cluster/Package ID 0
 cpu0: SMT ID 0
 cpu0: family 0f model 03 extfamily 00 extmodel 00
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --