Re: [4KSTACK][2.6.6] Stack overflow in radeonfb

["Jörn Engel" <joern@wohnheim.fh-wedel.de>]

On Thu, 13 May 2004 11:36:36 -0400, Valdis.Kletnieks@vt.edu wrote:
> On Thu, 13 May 2004 17:15:49 +0200, =?iso-8859-1?Q?J=F6rn?= Engel said:
> 
> > Even quicker fix:
> > 
> > --- linux-2.6/drivers/video/aty/radeon_base.c~	2004-05-13 16:51:08.000
> 000000 +0200
> > +++ linux-2.6/drivers/video/aty/radeon_base.c	2004-05-13 16:55:09.000000000 +
> 0200
> > @@ -1397,7 +1397,7 @@
> >  {
> >  	struct radeonfb_info *rinfo = info->par;
> >  	struct fb_var_screeninfo *mode = &info->var;
> > -	struct radeon_regs newmode;
> > +	static struct radeon_regs newmode;
> >  	int hTotal, vTotal, hSyncStart, hSyncEnd,
> >  	    hSyncPol, vSyncStart, vSyncEnd, vSyncPol, cSync;
> >  	u8 hsync_adj_tab[] = {0, 0x12, 9, 9, 6, 5};
> 
> Is that racy if you have more than one graphics card installed?

Could be.  It's a quick hack, just like the kmalloc() variant.  For
the solution, see my previous mail.

Jörn

-- 
I can say that I spend most of my time fixing bugs even if I have lots
of new features to implement in mind, but I give bugs more priority.
-- Andrea Arcangeli, 2000