From: Ralf Baechle <ralf@oss.sgi.com>
To: Keith M Wesolowski <wesolows@chem.unr.edu>
Cc: linux-mips@oss.sgi.com
Subject: Re: Analysis of Samba configure oops
Date: Tue, 18 Jul 2000 05:18:28 +0200 [thread overview]
Message-ID: <20000718051828.A12440@bacchus.dhis.org> (raw)
In-Reply-To: <20000717100534.D6424@chem.unr.edu>; from wesolows@chem.unr.edu on Mon, Jul 17, 2000 at 10:05:34AM -0700
On Mon, Jul 17, 2000 at 10:05:34AM -0700, Keith M Wesolowski wrote:
> Responding to my own mail, yeesh. I was obviously suffering a dumbass
> attack when I wrote this.
>
> > Code; 8801eb1c <r4k_flush_cache_page_s128d16i16+74/324>
> > 8: 8ce5003c lw $a1,60($a3)
> > Code; 8801eb20 <r4k_flush_cache_page_s128d16i16+78/324> <=====
> > c: 8c62003c lw $v0,60($v1) <=====
> >
> > The fault address is 0x3c. The offset of mm in current is 0x2c. Thus
> > the immediate cause appears to be that current->mm is 0x10, obviously
> > nonsense.
>
> The interesting bit is not current->mm, but current->mm->context. The
> offset of context is 60 as shown above in the disassembly. 60 = 3c, so
> it's clear that current->mm is in fact NULL.
>
> Hope this makes things a bit clearer.
Indeed, it does. I've commited a patch for this bug to cvs and would like
to hear reports.
Ralf
next prev parent reply other threads:[~2000-07-18 21:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-07-17 1:24 Analysis of Samba configure oops Keith M Wesolowski
2000-07-17 17:05 ` Keith M Wesolowski
2000-07-18 3:18 ` Ralf Baechle [this message]
2000-07-19 4:33 ` Keith M Wesolowski
2000-07-19 14:10 ` Ralf Baechle
2000-07-19 23:40 ` Keith M Wesolowski
2000-07-20 12:19 ` Ralf Baechle
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