mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
To: David Woodhouse <dwmw2@infradead.org>, linux-kernel@vger.kernel.org
Cc: jmerkey@timpanogas.org
Subject: Re: filp_open() in 2.2.19 causes memory corruption
Date: Wed, 25 Apr 2001 17:32:10 -0600	[thread overview]
Message-ID: <20010425173210.A13124@vger.timpanogas.org> (raw)
In-Reply-To: <20010423163757.D1131@vger.timpanogas.org> <20010423163248.B1131@vger.timpanogas.org> <001d01c0cc33$7e62daa0$5517fea9@local> <3942.988063428@redhat.com> <20010423163248.B1131@vger.timpanogas.org> <4750.988065680@redhat.com> <20010423163757.D1131@vger.timpanogas.org> <4855.988065927@redhat.com> <20010423163954.A1237@vger.timpanogas.org> <4897.988066047@redhat.com>
In-Reply-To: <4897.988066047@redhat.com>; from dwmw2@infradead.org on Mon, Apr 23, 2001 at 11:47:27PM +0100

On Mon, Apr 23, 2001 at 11:47:27PM +0100, David Woodhouse wrote:

David/LKML,

I've gotten to the bottom of this problem, and you are correct that klog 
is trashing the messages file for the oops.  As for the oops, it was related
to the use of ll_rw_blk() instead of submit_bh() in 2.4.3 which was causing 
memory corruption in Linus' buffer cache code.   In NetWare, we used to 
create a signature field for I/O and other structures that were submitted
by modules other than the media manager.  

This would be useful for the buffer cache to put in a signature field so 
if he ever gets back a buffer head that is not his, the buffer cache 
could drop it with a noisy message rather than have memory corruption 
and other side effects that take days to track down.

Jeff

> 

  parent reply	other threads:[~2001-04-25 23:39 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-23 20:24 Manfred Spraul
2001-04-23 20:44 ` Jeff V. Merkey
2001-04-23 22:03 ` David Woodhouse
2001-04-23 22:32   ` Jeff V. Merkey
     [not found]   ` <4750.988065680@redhat.com>
     [not found]     ` <4855.988065927@redhat.com>
     [not found]       ` <20010423163954.A1237@vger.timpanogas.org>
     [not found]         ` <4897.988066047@redhat.com>
2001-04-25 23:32           ` Jeff V. Merkey [this message]
2001-04-27 11:50           ` David Woodhouse
  -- strict thread matches above, loose matches on Subject: below --
2001-04-23 18:04 Jeff V. Merkey

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20010425173210.A13124@vger.timpanogas.org \
    --to=jmerkey@vger.timpanogas.org \
    --cc=dwmw2@infradead.org \
    --cc=jmerkey@timpanogas.org \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®