Subject: kern/18013: NFS kernel crash
To: None <>
From: None <>
List: netbsd-bugs
Date: 08/21/2002 07:52:05
>Number:         18013
>Category:       kern
>Synopsis:       NFS kernel crash
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Aug 21 07:54:00 PDT 2002
>Originator:     Tobias Nygren
>Release:        1.6_RC1
NetBSD megami 1.6_RC1 NetBSD 1.6_RC1 (GENERIC) #0: Mon Aug 19 06:28:34 UTC 2002
pile/GENERIC i386
I'm running a diskless Linux(2.4.19) client nfs mounted to a
NetBSD server. When applying (heavy) filesystem i/o,
such as makedev, installing packages, kernel compile
the server crashes with this output.

This particular dump is from NetBSD 1.6_BETA5,
but the problems exists in RC1 as well.

uvm_fault(0xcb185468, 0x38643000, 0, 2) -> e
kernel: page fault trap, code=0
Stopped in pid 171 (nfsd) at    pool_get+0x199: movl    %eax,     0x4(%edx)
db> trace
pool_get(c067fd40,2,0,0,cb3b9af4) at pool_get+0x199
pool_cache_get(c067fd00,2,80000001,d104,cb3b9af4) at pool_cache_get+0x3b
nfs_namei(cb3b9d10,cb3b9b00,6,c0972800,c0b18600) at nfs_namei+0x43
nfsrv_rename(c0b2cc00,c0972800,cb180c94,cb3b9df8,cb3b9f80) at nfsrv_rename+0x9f3
nfssvc_nfsd(cb3b9e50,804b720,cb180c94,c036257f,cb3b9f80) at nfssvc_nfsd+0x504
sys_nfssvc(cb180c94,cb3b9f80,cb3b9f78,c0377494) at sys_nfssvc+0x5e2
syscall_plain(1f,1f,1f,1f,bfbfdcbc) at syscall_plain+0xa7

Set up a diskless Linux box, mount the root on
a netbsd server, create some fs i/o for a few

none known.