Re: [WTF?] sys_tas() on m32r

[Al Viro]

On Fri, Dec 23, 2005 at 03:50:32PM +0800, liyu wrote:
> >in arch/m32r/kernel/sys_m32r.c.  Trivial oops *AND* ability to trigger
> >IO with interrupts disabled.

> The memory that parameter addr pointer is in user-space.
> To access these memory, you should use function like copy_from_user().

... which is deadly with interrupts disabled/under a spinlock.  Exactly.
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