From: Andrew Morton <akpm@linux-foundation.org>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: get_user_pages vs mmap MAP_FIXED bug
Date: Sun, 6 May 2007 20:22:25 -0700 [thread overview]
Message-ID: <20070506202225.ba6476b6.akpm@linux-foundation.org> (raw)
In-Reply-To: <1178501204.7731.35.camel@localhost.localdomain>
On Mon, 07 May 2007 11:26:44 +1000 Rusty Russell <rusty@rustcorp.com.au> wrote:
> On Sun, 2007-05-06 at 17:01 +1000, Rusty Russell wrote:
> > This bug is in 2.6.21-rc7-mm2, but not 2.6.21. Haven't tested
> > 2.6.21-mm1 yet.
>
> OK, 2.6.21-mm1 fails too. 2.6.21-git6 ... is fine.
>
> Here's a standalone test using ptrace. No kernel module req'd.
>
> rusty@debussy:~/linux-2.6.21-mm1$ ../examiner
> ptrace says 0, child says 0x464c457f
thanks.
> Any clues Andrew? Or should I take your patches and do a binary search?
I've been assuming that Nick's vm_operations.fault changes have broken
get_user_pages()'s manual faulting. The next step is to wait for Nick to
turn up.
next prev parent reply other threads:[~2007-05-07 3:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-06 7:01 get_user_pages vs mmap MAP_FIXED bug Rusty Russell
2007-05-07 1:26 ` Rusty Russell
2007-05-07 3:22 ` Andrew Morton [this message]
2007-05-08 7:41 ` Nick Piggin
2007-05-08 23:34 ` Rusty Russell
2007-05-09 0:08 ` Nick Piggin
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