lockdep: fixup irq tracing
Ensure we fixup the IRQ state before we hit any locking code.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c
index 644b4f7..0e262306 100644
--- a/arch/x86/mm/fault_64.c
+++ b/arch/x86/mm/fault_64.c
@@ -304,6 +304,11 @@
unsigned long flags;
siginfo_t info;
+ /*
+ * We can fault from pretty much anywhere, with unknown IRQ state.
+ */
+ trace_hardirqs_fixup();
+
tsk = current;
mm = tsk->mm;
prefetchw(&mm->mmap_sem);