The show all regs sysrq uses the nmi function to do it. But this
function expects preemption to be off, or funny things happen.
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Index: linux-2.6.21-rt9/drivers/char/sysrq.c
===================================================================
--- linux-2.6.21-rt9.orig/drivers/char/sysrq.c
+++ linux-2.6.21-rt9/drivers/char/sysrq.c
@@ -213,7 +213,9 @@ static struct sysrq_key_op sysrq_showreg
static void sysrq_handle_showallregs(int key, struct tty_struct *tty)
{
+ preempt_disable();
nmi_show_all_regs();
+ preempt_enable();
}
static struct sysrq_key_op sysrq_showallregs_op = {
-
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