On Tue, Jun 21, 2011 at 04:31:19PM +0800, TAO HU wrote: > Hi, All > > We got an issue on our OMAP4 SMP system. > Looks like __und_user(), which was triggered by a user space > exception, got a page fault hence lead to might_sleep() failure. Could you see whether this patch prevents the warning please. diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index bc0e1d8..d52b940 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -289,7 +289,7 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) * If we're in an interrupt or have no user * context, we must not take the fault.. */ - if (in_atomic() || !mm) + if (in_atomic() || irqs_disabled() || !mm) goto no_context; /* -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
