linux-kernel - Re: Problems with framebuffer in 2.6.22-git17

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Date:	Sun, 22 Jul 2007 22:02:02 +0100
From:	"Adrian McMenamin" <adrianmcmenamin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	lethal@...rs.sourceforge.net
Subject: Re: Problems with framebuffer in 2.6.22-git17

On 22/07/07, Adrian McMenamin <adrianmcmenamin@...il.com> wrote:
> I ma having problems with the pvr2 fb on the Dreamcast in 2.6.22-git17
> - when the code is executed it appears to lock the Dreamcast up.
>
> The problem seems to be:
>
>  fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event);
>
> In drivers/video/fbmem.c
>
> This hasn't been an issue before, so are there any recent changes that
> might have caused this?
>
> (fb_notifier_call_chain calls a succession of stubs ending in
> __blocking_notifier_call_chain in kernel/sys.c)


Looking further, the problem can be further narrowed to

ret = nb->notifier_call(nb, val, v);


in

static int __kprobes notifier_call_chain(struct notifier_block **nl,
					unsigned long val, void *v,
					int nr_to_call,	int *nr_calls)

In kernel/sys.c
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