kern/43167: Locking related panic in tmpfs

[ahoka%NetBSD.org@localhost]

>Number:         43167
>Category:       kern
>Synopsis:       Locking related panic in tmpfs
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 15 23:50:00 +0000 2010
>Originator:     Adam Hoka
>Release:        NetBSD-current
>Organization:
>Environment:
NetBSD mechanika.local 5.99.26 NetBSD 5.99.26 (GENERIC) #6: Thu Apr 15 11:16:21 
CEST 2010  
ahoka%mechanika.local@localhost:/usr/build/objects/sys/arch/i386/compile/GENERIC
 i386
>Description:
uvm_fault(0xcba1a84c, 0, 1) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c0481599 cs 8 eflags 10287 cr2 0 ilevel 8
kernel: supervisor trap page fault, code=0
Stopped in pid 26592.1 (sh) at  netbsd:turnstile_block+0x119:   movl    0x10(%ea
x),%eax
db{0}> turnstile_block(0,1,cbd37440,c0a0944c,0,0,0,cb620cc0,20000020,0) at netbs
d:turnstile_block+0x119
mutex_vector_enter(cbd37440,cb91fcf4,cb163aec,c0693c30,cb163adc,cb455eff,cb163b1
c,cb44c2a3,cb91fcf4,c09160e0) at netbsd:mutex_vector_enter+0x365
tmpfs_alloc_vp(cb44f000,cbd373d4,cb163c70,cb44f000,cb163c70,cb91fcf4,cbd37604,cb
91fcf4,cb91fcf4,cb455eff) at tmpfs:tmpfs_alloc_vp+0x19
tmpfs_lookup(cb163b38,20002,cb163b4c,c06836c6,cb91fcf4,c0915fa0,cb91fcf4,cb163c7
0,cb163c2c,0) at tmpfs:tmpfs_lookup+0x16e
VOP_LOOKUP(cb91fcf4,cb163c70,cb163c2c,cb455eff,cb163b7c,cb620cc0,0,5,cb620cc0,12
) at netbsd:VOP_LOOKUP+0x6d
getcwd_common(cb91fcf4,cb005a10,cb163ccc,cb455e00,80,1,cbc08020,0,cb455e00,cb455
f00) at netbsd:getcwd_common+0x2fd
sys___getcwd(cbc08020,cb163d00,cb163d28,cb163d00,bbb22000,cbc021f4,128,8065e64,1
00,bbbf6edc) at netbsd:sys___getcwd+0x95
syscall(cb163d48,b3,ab,1f,1f,0,8065e64,bfbfe918,bbba32c0,bfbfe9a4) at netbsd:sys
call+0xb9

>How-To-Repeat:
Build stuff on tmpfs, I dont know.
>Fix:
FreeBSD has a fix: http://www.freebsd.org/cgi/query-pr.cgi?pr=122038