That's really strange - i wonder why the backtracer can't find the original
stack. Should probably add some printk diagnosis here.
Can you send the output with this patch?
Index: linux/arch/x86_64/kernel/traps.c
===================================================================
--- linux.orig/arch/x86_64/kernel/traps.c
+++ linux/arch/x86_64/kernel/traps.c
@@ -238,6 +238,7 @@ void show_trace(unsigned long *stack)
HANDLE_STACK (stack < estack_end);
i += printk(" <EOE>");
stack = (unsigned long *) estack_end[-2];
+ printk("new stack %lx (%lx %lx %lx %lx %lx)\n", stack, estack_end[0], estack_end[-1], estack_end[-2], estack_end[-3], estack_end[-4]);
continue;
}
if (irqstack_end) {
Thanks for running this Andy:
http://test.kernel.org/abat/30183/debug/console.log
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