diff --git a/[refs] b/[refs]
index b30c0b152778..2db297ae413c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 353afeea24cc51aafc0ff21a72ec740b6f0af50c
+refs/heads/master: 84f201139245c30777ff858e71b8d7e134b8c3ed
diff --git a/trunk/arch/x86/kernel/ds_selftest.c b/trunk/arch/x86/kernel/ds_selftest.c
index e1ba5101b576..cccc19a38f6d 100644
--- a/trunk/arch/x86/kernel/ds_selftest.c
+++ b/trunk/arch/x86/kernel/ds_selftest.c
@@ -47,8 +47,13 @@ static int ds_selftest_bts_consistency(const struct bts_trace *trace)
 		printk(KERN_CONT "bad bts buffer setup...");
 		error = -1;
 	}
+	/*
+	 * We allow top in [begin; end], since its not clear when the
+	 * overflow adjustment happens: after the increment or before the
+	 * write.
+	 */
 	if ((trace->ds.top < trace->ds.begin) ||
-	    (trace->ds.end <= trace->ds.top)) {
+	    (trace->ds.end < trace->ds.top)) {
 		printk(KERN_CONT "bts top out of bounds...");
 		error = -1;
 	}