>Number:         26569
>Category:       port-dreamcast
>Synopsis:       Panic running regress/sys/kern/umount
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-dreamcast-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 06 12:34:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Nick Hudson
>Release:        NetBSD 2.0G
>Organization:
Nope
>Environment:
NetBSD dc 2.0G NetBSD 2.0G (DC) #0: Tue Jul 27 12:29:09 BST 2004  nick@arthur:/usr/obj/dreamcast/usr/src/sys/arch/dreamcast/compile/DC dreamcast

>Description:
tlb_handler panic on NetBSD/dreamcast

vnd0: no disk label
vnd0: no disk label
panic: tlb_handler: invalid user-space access from kernel mode va=0x00000000, ssr=0x400000f0, spc=0x8c1077ee  lwp=0x8c2ebe10 onfault=0x0
Stopped in pid 2736.1 (disklabel) at    0x8c10433a:     mov     r14, r15
db>

db> show registers
r0          0xf0
r1          0x8c104334
r2          0x88c
r3          0x8c1ae000
r4          0x400000f1
r5          0xd
r6          0
r7          0
r8          0x8c0b84a4
r9          0x8c142d54
r10         0
r11         0x100
r12         0
r13         0x8cfee5a0
r14         0xc2399a34
r15         0xc2399a34
pr          0x8c0b7bcc
spc         0x8c10433a
ssr         0x400000f0
mach        0
macl        0

8c1077d8 <pmap_extract>:
8c1077d8:       86 2f           mov.l   r8,@-r15
8c1077da:       96 2f           mov.l   r9,@-r15
8c1077dc:       e6 2f           mov.l   r14,@-r15
8c1077de:       22 4f           sts.l   pr,@-r15
8c1077e0:       f3 6e           mov     r15,r14
8c1077e2:       53 68           mov     r5,r8
8c1077e4:       0d d0           mov.l   8c10781c <pmap_extract+0x44>,r0 ! 0x8c107d68
8c1077e6:       0b 40           jsr     @r0
8c1077e8:       63 69           mov     r6,r9
8c1077ea:       08 20           tst     r0,r0
8c1077ec:       03 89           bt      8c1077f6 <pmap_extract+0x1e>
8c1077ee:       02 61           mov.l   @r0,r1


>How-To-Repeat:
Run regress/sys/kern/umount
>Fix:
No
>Release-Note:
>Audit-Trail:
>Unformatted: