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
next 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
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