>Number:         21412
>Category:       kern
>Synopsis:       data fault: pc=114e9d0 addr=0 panic when using nq-nfs (-current -20030429-210445)
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 01 14:54:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Frank Kardel
>Release:        NetBSD 1.6R
>Organization:
	
>Environment:
	
	
System: NetBSD pip 1.6R NetBSD 1.6R (PIP) #1: on sparc64
Architecture: sparc64
Machine: sparc64
>Description:
	mount fs via nqnfs from another -current machine. Use it.
	Watch the panic.

>How-To-Repeat:
        on sparc64 (-current-20030429-210445) machine:
	mount -o-q <-current i386 machine>:/... /mnt
	find /mnt -ls > /dev/null
	<wait>
data fault: pc=114e9d0 addr=0
kernel trap 30: data access exception
Stopped in pid 7885.1 (find) at netbsd:nqnfs_clientlease+0x138: stx %o1, [%g2 + 0x90]
db> trace
nfs_open(9483960, 116d014, 30, 1e26200, 9480000, 922c400) at netbsd:nfs_open+0xf4
VOP_OPEN(94f5710, 5, 1fba900, 933dc90, 7, 91f5100) at netbsd:VOP_OPEN+0x30
vn_open(0, 5, 94f5710, ffffd568, 1fba900, ffffffffffffcf80) at netbsd:vn_open+0x28c
sys_open(0, 9483dd0, 9483dc0, 120b634, ffffffffffffffff, ff00) at netbsd:sys_open+0xa8
syscall(9483ed0, 5, 0, 933dc90, 4052f1a8, 4052f1a4) at netbsd:syscall+0x344
?(256060, 4, ffffffffffffd568, 245660, 40, 0) at 0x1008ca8
db> show registers
tstate      0x9982000601
pc          0x114e9d0   nqnfs_clientlease+0x138
npc         0x114e9d8   nqnfs_clientlease+0x140
ipl         0
y           0
g0          0
g1          0x1fd4090   usb_all_tasks+0x73d3f0
g2          0
g3          0
g4          0x187e000   nfs_hashlock
g5          0x136b400   nqnfs_piggy+0x44
g6          0x10000001e00
g7          0x40596530
o0          0x1fd4000   usb_all_tasks+0x73d360
o1          0x961bdd0   usb_all_tasks+0x7d85130
o2          0x968b6d0   usb_all_tasks+0x7df4a30
o3          0x1
o4          0x3eb1313d
o5          0x3eb1311eb8474b00
o6          0x9482e31   usb_all_tasks+0x7bec191
o7          0x114db04   nqnfs_getlease+0x420
l0          0

>Fix:
	?
>Release-Note:
>Audit-Trail:
>Unformatted: