mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Santhosh Kumar <linuxkern@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: Interrupting __free_pages_OK results in OOPS
Date: Sun, 1 Dec 2002 23:05:01 -0800 (PST)	[thread overview]
Message-ID: <20021202070501.27876.qmail@web14610.mail.yahoo.com> (raw)


My device driver has an interrupt handler which
handles interrupts at a very high priority. Sometimes
the interrupt handler OOPS in __free_pages_OK. Any 
idea why it happens. (The process that was executing
at that time is Python).

System is Redhat 8.0, kernel 2.4.18-4

OOPS happens as follows. 

The interrupt handler pushes "gs" segment register,
while entering and pops "gs" while leaving. Always, it
OOPS at "pop %gs". The value that is popped to "gs" is
0007. The "lar" instruction (load access rights, with
parameter 0007) gives a value 0x0010ec00, which shows
it is a system segment. The code given by the General
Protection Fault is 0004.

Thanks
Santhosh

__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com

             reply	other threads:[~2002-12-02  6:57 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-02  7:05 Santhosh Kumar [this message]
2002-12-02 12:52 ` Rik van Riel

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=20021202070501.27876.qmail@web14610.mail.yahoo.com \
    --to=linuxkern@yahoo.com \
    --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®