Derek was able to trace down the reason for the fault witn kgdb. I'd
guess it likely has something to do with these recent changes to
osi_vnodeops.c. I'll take a closer look, but I'm not really familiar
with what's going on in the code here. 

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       EMail:  [EMAIL PROTECTED]
University of Missouri - Rolla         Phone: (573) 341-4841
Computing Services                       Fax: (573) 341-4216


-----Original Message-----
From: Neulinger, Nathan 
Sent: Thursday, March 14, 2002 12:29 PM
To: 'Derek Atkins'
Subject: RE: Have you had a succesful build+use with current openafs?


FYI Looks like it was probably introduced in 1.33 of osi_vnodeops.c.
There were a bunch of changes for revalidate_dnode.

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       EMail:  [EMAIL PROTECTED]
University of Missouri - Rolla         Phone: (573) 341-4841
Computing Services                       Fax: (573) 341-4216


> -----Original Message-----
> From: Derek Atkins [mailto:[EMAIL PROTECTED]] 
> Sent: Thursday, March 14, 2002 12:23 PM
> To: Neulinger, Nathan
> Subject: Re: Have you had a succesful build+use with current openafs?
> 
> 
> Yep.  kgdb.sf.net.  Requires two systems with a "serial" line
> between them.  In my case I'm using vmware :)
> 
> We should definitely report this to openafs-devel!  I'll look a
> bit more but I've only got about 30 minutes more I can sink into
> this today.
> 
> -derek
> 
> "Neulinger, Nathan" <[EMAIL PROTECTED]> writes:
> 
> > Goody! :)
> > 
> > Thanks. That's reassuring, nothing like having a bug like this screw
> > with your head when you think that you've made a whole 
> bunch of changes
> > that should not have any affect on code behavior.
> > 
> > Are you using the kernel debugger patches? I definately 
> should dig into
> > that some time. 
> > 
> > -- Nathan
> > 
> > ------------------------------------------------------------
> > Nathan Neulinger                       EMail:  [EMAIL PROTECTED]
> > University of Missouri - Rolla         Phone: (573) 341-4841
> > Computing Services                       Fax: (573) 341-4216
> > 
> > 
> > > -----Original Message-----
> > > From: Derek Atkins [mailto:[EMAIL PROTECTED]] 
> > > Sent: Thursday, March 14, 2002 12:17 PM
> > > To: Neulinger, Nathan
> > > Subject: Re: Have you had a succesful build+use with 
> current openafs?
> > > 
> > > 
> > > Here is the stack trace of what's going on.  I have no idea why
> > > freePacketList is being set to '1'.  I'll keep looking, but this
> > > is clearly not "just you" :)
> > > 
> > > -derek
> > > 
> > > Program received signal SIGSEGV, Segmentation fault.
> > > 0xc8863031 in osi_AllocLargeSpace (size=720) at 
> > > ../afs/afs_osi_alloc.c:201
> > > 201         if ( tp ) freePacketList = tp->next;
> > > (gdb) where
> > > #0  0xc8863031 in osi_AllocLargeSpace (size=720) at 
> > > ../afs/afs_osi_alloc.c:201
> > > #1  0xc8872a91 in afs_DoBulkStat (adp=0xc8936658, dirCookie=480, 
> > >     areqp=0xc5347e68) at ../afs/afs_vnop_lookup.c:426
> > > #2  0xc8874c25 in afs_lookup (adp=0xc8936658, 
> aname=0xc13ded80 "CVS", 
> > >     avcp=0xc5347ec4, acred=0xc412a000) at 
> > > ../afs/afs_vnop_lookup.c:1190
> > > #3  0xc8896c14 in afs_linux_lookup (dip=0xc8936658, dp=0xc13ded20)
> > >     at ../afs/osi_vnodeops.c:993
> > > #4  0xc0142175 in real_lookup (parent=0xc79210c0, 
> > > name=0xc5347f4c, flags=0)
> > >     at namei.c:284
> > > #5  0xc0142936 in path_walk (name=0xc76bf011 "", 
> > > nd=0xc5347f98) at namei.c:564
> > > #6  0xc014313a in __user_walk (name=0xbfffb820 
> > > "../../src/doc/CVS", flags=9, 
> > >     nd=0xc5347f98) at namei.c:805
> > > #7  0xc013fcf6 in sys_stat64 (filename=0xbfffb820 
> > > "../../src/doc/CVS", 
> > >     statbuf=0xbfff96b0, flags=1075171668) at stat.c:337
> > > #8  0xc0106fcb in system_call () at af_packet.c:1879
> > > (gdb) p tp
> > > $1 = (struct osi_packet *) 0x1
> > > (gdb) p freePacketList
> > > $2 = (struct osi_packet *) 0x1
> > > 
> > > -- 
> > >        Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
> > >        Member, MIT Student Information Processing Board  (SIPB)
> > >        URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
> > >        [EMAIL PROTECTED]                        PGP key available
> > > 
> 
> -- 
>        Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
>        Member, MIT Student Information Processing Board  (SIPB)
>        URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
>        [EMAIL PROTECTED]                        PGP key available
> 
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