Subject: kern/26328: 2.0_BETA kernel crash
To: None <>
From: None <>
List: netbsd-bugs
Date: 07/14/2004 20:50:28
>Number:         26328
>Category:       kern
>Synopsis:       2.0_BETA kernel crash
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 14 18:51:00 UTC 2004
>Originator:     Jukka Salmi
>Release:        NetBSD 2.0_BETA
System: NetBSD 2.0_BETA NetBSD 2.0_BETA (GENERIC) #1: Wed Jul  7 21:46:36 UTC 2004 i386
Architecture: i386
Machine: i386
The machine was building a NetBSD release (using recent netbsd-2-0 sources)
in a chroot environment when the kernel suddenly dropped into ddb:

uvm_fault(0xcbb89004, 0, 0, 1) -> 0xe
kernel: page fault trap, code=0
Stopped in pid 29805.1 (cc1) at netbsd:pvtree_SPLAY+0x2c:       movl    0x8(%ecx),%eax
db> tr
pvtree_SPLAY(c0d5a178,cbc44e04,13086425,cbc44e7c,20) at netbsd:pvtree_SPLAY+0x2c
pmap_remove_ptes(cb3da390,c0beeac0,bfb21440,48510000,48518000) at netbsd:pmap_remove_ptes+0x1f9
pmap_do_remove(cb3da390,48510000,48518000,0,48510000) at netbsd:pmap_do_remove+0x15b
pmap_remove(cb3da390,48510000,48518000,cbb890ac,cbb89004) at netbsd:pmap_remove+0x16
uvm_unmap_remove(cbb89004,48510000,48518000,cbc44f2c,cbb89004) at netbsd:uvm_unmap_remove+0x107
sys_munmap(cbb8b424,cbc44f64,cbc44f5c,0,cbc44fa4) at netbsd:sys_munmap+0xe5
syscal_plain() at netbsd:syscall_plain+0x7e
--- syscall (number 73) ---
Not sure yet; I'll try to build again and see if it happens again.