ADD 804398 - XFS hits BUG call in pagebuf_read_full_page

[pv@xxxxxxxxxxxxxxxxxxxxxx (cattelan@xxxxxxxxxxx)]

 Submitter : cattelan                  Status : open                        
 Assigned Engineer : cattelan          Priority : 2                         
*Modified Date : 10/10/00             *Modified User : cattelan             
*Modified User Domain : thebarn.com   *Description :
The problem appears to be a page that was orginaly delay alloc
(the underlying disk blocks cam back as zero) but has either
been reused or its state has been cleared.

I don't have all the kbd output... I;ll add to it as
I capture more traces.

[0]kdb> bt
    EBP       EIP         Function(args)
0xc4c13e58 0xc880c914 [pagebuf]pagebuf_read_full_page+0x198 (0xc49eeb60, 
0xc11939ac)

.....


==========================
ADDITIONAL INFORMATION (ADD)
From: russell cattelan <cattelan@xxxxxxxxxxx>
Date: Oct 10 2000 12:25:10PM
[pvnews version: 1.71]
==========================
"ananth@xxxxxxxxxxxx" wrote:

> View Incident: 
> http://co-op.engr.sgi.com/BugWorks/code/bwxquery.cgi?search=Search&wlong=1&view_type=Bug&wi=804398
>
>  Status : open                         Priority : 2
>  Assigned Engineer : cattelan          Submitter : cattelan
> *Modified User : ananth               *Modified User Domain : engr
> *Description :
> The problem appears to be a page that was orginaly delay alloc
> (the underlying disk blocks cam back as zero) but has either
> been reused or its state has been cleared.
>
> I don't have all the kbd output... I;ll add to it as
> I capture more traces.
>
> [0]kdb> bt
>     EBP       EIP         Function(args)
> 0xc4c13e58 0xc880c914 [pagebuf]pagebuf_read_full_page+0x198 (0xc49eeb60, 
> 0xc11939ac)
>
> .....
>
> ==========================
> ADDITIONAL INFORMATION (ADD)
> From: ananth@engr (BugWorks)
> Date: Oct 10 2000 12:11:51PM
> ==========================
>
> Couple of quick suggestions: Can you please
> dump out the page struct (both by using the "page"
> command & as raw memory) and the "map" in
> page_buf_read_full_page ... you can use "pbmap"
> kdb command for the map.

that is what  "I don't have all the kbd output... I;ll add to it as
I capture more traces"  means

I didn't capture all that
kdb crashed and I was forced to reboot.
The points of interest though
page flags: PG_locked

xextlist showed the extent to be delay alloc.

>
>
> thanks,
>
> ananth.