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-rw-r--r--arch/x86/kernel/dumpstack.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index 6b1f6f6f866..4325165753d 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -10,10 +10,12 @@
#include <linux/kdebug.h>
#include <linux/module.h>
#include <linux/ptrace.h>
+#include <linux/ftrace.h>
#include <linux/kexec.h>
#include <linux/bug.h>
#include <linux/nmi.h>
#include <linux/sysfs.h>
+#include <linux/ftrace.h>
#include <asm/stacktrace.h>
@@ -195,6 +197,11 @@ unsigned __kprobes long oops_begin(void)
int cpu;
unsigned long flags;
+ /* notify the hw-branch tracer so it may disable tracing and
+ add the last trace to the trace buffer -
+ the earlier this happens, the more useful the trace. */
+ trace_hw_branch_oops();
+
oops_enter();
/* racy, but better than risking deadlock. */