freebsd stable - Aug 2005 - Crash on Alpha - 4.11-STABLE

Hi there,

This is the second time I've seen this crash in the past three weeks. 
I'm not sure what the root cause either.

This box is just a home server with a single NFS exported directory 
and one NFS client.  It is also a caching http proxy server for my 
home LAN (three machines).  The crash is not occurring during busy 
times for the proxy side of things, as it happened at 2:01am.


FreeBSD erwin.number6 4.11-STABLE FreeBSD 4.11-STABLE #9: Mon Jun 13 
23:54:13 EST 2005     root@erwin.number6:/usr/obj/usr/src/sys/ERWIN  alpha


         panic: ffs_write: dir_write
panic
Stopped at Debugger+02xc: ldq ra,0(sp) <0xfffffe000bab5988> 
<ra=0xfffffc0000557be0, sp=0xfffffe000ba5988>

db> trace

Debugger() at Debugger+02xc
panic() at panic+0x2c
ffs_write() at ffs_write+0x120
vnode_pager_generic_putpages() at vnode_pager_generic_putpages+0x21c
ffs_putpages() at ffs_putpages+0x30
vnode_pager_putpages() at vnode_pager_putpages+0x9c
vm_pageout_flush() at vm_pageout_flush+0x15c

cheers,
Rob

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At 06:10 PM 12/08/2005, Rob B wrote:
>Hi there,
>
>This is the second time I've seen this crash in the past three 
>weeks. I'm not sure what the root cause either.
>
>This box is just a home server with a single NFS exported directory 
>and one NFS client.  It is also a caching http proxy server for my 
>home LAN (three machines).  The crash is not occurring during busy 
>times for the proxy side of things, as it happened at 2:01am.
>
>
>FreeBSD erwin.number6 4.11-STABLE FreeBSD 4.11-STABLE #9: Mon Jun 13 
>23:54:13 EST 2005     root@erwin.number6:/usr/obj/usr/src/sys/ERWIN  alpha
>
>
>         panic: ffs_write: dir_write
>panic
>Stopped at Debugger+02xc: ldq ra,0(sp) <0xfffffe000bab5988> 
><ra=0xfffffc0000557be0, sp=0xfffffe000ba5988>
>
>db> trace
>
>Debugger() at Debugger+02xc
>panic() at panic+0x2c
>ffs_write() at ffs_write+0x120
>vnode_pager_generic_putpages() at vnode_pager_generic_putpages+0x21c
>ffs_putpages() at ffs_putpages+0x30
>vnode_pager_putpages() at vnode_pager_putpages+0x9c
>vm_pageout_flush() at vm_pageout_flush+0x15c

This crash happened again at exactly the same place.  Traceback gives 
identical output

Rob