Re: x86 changes

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Sep 27, 2007 at 03:21:02PM +0300, Mikolaj Golub wrote:
> 
> On Thu, 27 Sep 2007 12:59:46 +0300 Mikolaj Golub wrote:
> 
>  MG> On Thu, 27 Sep 2007 09:45:45 +0200 Christoph Egger wrote:
> 
>  >>> It looks like http://www.netbsd.org/~ad/x86.diff is still old patch. 
> Could
>  >>> you point where I can find patch with your last fixes to try?
> 
>  CE>> I think, AD committed this patch. So try -current. :-)
> 
>  MG> Oh, yes, I see it in current. Thaks.
> 
> I have tried today current kernel. It crashes when starting xend:
> 
> > Mounting all filesystems...
> > Clearing temporary files.
> > Starting xend.
> > uvm_fault(0xc654ba20, 0, 2) -> 0xe
> > fatal page fault in supervisor mode
> > trap type 6 code 2 eip c04c908d cs 9 eflags 10246 cr2 0 ilevel b
> > panic: trap
> > syncing disks... Mutex error: mutex_vector_enter: locking against myself
> > 
> > lock address : 0x00000000c090d740
> > current cpu  :                  0
> > current lwp  : 0x00000000c7de7700
> > owner field  : 0x0000000000010b00 wait/spin:                0/1
> > 
> > panic: lock error
> > 
> > dumping to dev 0,1 offset 940022
> > dump 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 
> > 30 29 28 27 26 25 2d


I get:
uvm_fault(0xc656b0d8, 0, 2) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 2 eip c04d1fcd cs 9 eflags 10246 cr2 0 ilevel b
kernel: supervisor trap page fault, code=0
Stopped in pid 522.1 (python2.4) at     netbsd:mutex_enter+0xd: cmpxchgl        
%ecx,0(%edx)
db> show registers
ds          0x11
es          0x11
fs          0x31
gs          0x11
edi         0
esi         0xffffffff
ebp         0xc840f844
ebx         0xbbafc910
edx         0x8
ecx         0xc7e54c40
eax         0
eip         0xc04d1fcd  mutex_enter+0xd
cs          0x9
eflags      0x10246
esp         0xc840f818
ss          0x11
netbsd:mutex_enter+0xd: cmpxchgl        %ecx,0(%edx)
db> tr             
mutex_enter(0,bbafc910,c6561e00,4,c7e54c40) at netbsd:mutex_enter+0xd
cpu_switchto(c7e54c40,c0d6ac50,c840f8dc,c0482518,0) at netbsd:cpu_switchto+0x81
sleepq_block(0,0,c0843d88,0,c0d6ac58) at netbsd:sleepq_block+0x8e
biowait(c0d6ac50,0,0,c840fa5c,c840fa44) at netbsd:biowait+0x54
genfs_getpages(c840fa94,1000,c840fabc,c03c58eb,c06f6e00) at netbsd:genfs_getpage
s+0xf4f
VOP_GETPAGES(c7e1f000,18000,0,c840fbcc,c840fbd8) at netbsd:VOP_GETPAGES+0x52
uvm_fault_internal(c656b0d8,bbafc000,1,0,0) at netbsd:uvm_fault_internal+0xfae
trap() at netbsd:trap+0x405
--- trap (number 6) ---
0xbbafc910:
db> 

Any idea ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--