All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Manfred Spraul" <manfred@colorfullife.com>
To: <linux-kernel@vger.kernel.org>
Subject: BUG? race between kswapd and ptrace (access_process_vm )
Date: Wed, 7 Mar 2001 17:32:43 +0100	[thread overview]
Message-ID: <004701c0a724$45004240$5517fea9@local> (raw)

Is kswapd now running without lock_kernel()?

Then there is a race between swapout and ptrace:
access_process_vm() accesses the page table entries, only protected with
the mmap_sem semaphore and lock_kernel().

Isn't

    spin_lock(&mm->page_table_lock);

missing in access_one_page() [in linux/kernel/ptrace.c]?

--
    Manfred


             reply	other threads:[~2001-03-07 16:33 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-07 16:32 Manfred Spraul [this message]
2001-03-07 16:56 ` BUG? race between kswapd and ptrace (access_process_vm ) Rik van Riel
2001-03-08 20:12   ` Manfred Spraul
2001-03-12 11:55     ` Stephen C. Tweedie

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='004701c0a724$45004240$5517fea9@local' \
    --to=manfred@colorfullife.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.