From: Ralf Baechle <ralf@linux-mips.org>
To: Fuxin Zhang <fxzhang@ict.ac.cn>
Cc: linux-mips@linux-mips.org
Subject: Re: cmpxchg broken in some situation
Date: Mon, 1 Oct 2007 16:26:20 +0100 [thread overview]
Message-ID: <20071001152620.GB15820@linux-mips.org> (raw)
In-Reply-To: <47010E15.7060109@ict.ac.cn>
On Mon, Oct 01, 2007 at 11:11:17PM +0800, Fuxin Zhang wrote:
> Sorry that it seems not work:
> the kernel oops at sysfs_open_file->sysfs_get_active with unaligned
> access(last seen exception on screen, no serial console by hand so it
> may not be the first exception). It is probably caused by
> "atomic_cmpxchg" there.
> And keep the old kernel using new modules with patched cmpxchg also lead
> to glxgears die(should be lock problem like before).
Can you look at the disassembly of the generated code? It should hopefully
be relativly obvious in the disassembly.
Ralf
next prev parent reply other threads:[~2007-10-01 15:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-30 10:34 cmpxchg broken in some situation Fuxin Zhang
2007-10-01 2:53 ` Ralf Baechle
2007-10-01 3:56 ` David Daney
2007-10-01 3:59 ` David Daney
2007-10-01 10:24 ` Ralf Baechle
2007-10-01 15:11 ` Fuxin Zhang
2007-10-01 15:26 ` Ralf Baechle [this message]
2007-10-02 9:34 ` Fuxin Zhang
2007-10-02 10:35 ` Ralf Baechle
2007-10-02 14:22 ` Thiemo Seufer
2007-10-02 23:15 ` Ralf Baechle
2007-10-02 22:48 ` Fuxin Zhang
2007-10-02 22:52 ` Ralf Baechle
2007-10-02 23:07 ` Fuxin Zhang
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