diff -X linux-2.6.26-rc5-devel/Documentation/dontdiff -u -r linux-2.6.26-rc5-devel/arch/sparc64/lib/mcount.S linux-2.6.26-rc5-overflow/arch/sparc64/lib/mcount.S
--- linux-2.6.26-rc5-devel/arch/sparc64/lib/mcount.S	2008-05-26 20:08:11.000000000 +0200
+++ linux-2.6.26-rc5-overflow/arch/sparc64/lib/mcount.S	2008-06-17 22:50:56.000000000 +0200
@@ -26,6 +26,8 @@
 	.align		8
 ovstack:
 	.skip		OVSTACKSIZE
+ignore:
+	.word		0
 #endif
 	.text
 	.align 32
@@ -36,7 +38,12 @@
 	/*
 	 * Check whether %sp is dangerously low.
 	 */
-	ldub		[%g6 + TI_FPDEPTH], %g1
+	sethi		%hi(ignore), %g3
+	 or		%g3, %lo(ignore), %g3
+	ld		[%g3], %g1
+	cmp		%g1, 0
+	bne		1f
+	 ldub		[%g6 + TI_FPDEPTH], %g1
 	srl		%g1, 1, %g3
 	add		%g3, 1, %g3
 	sllx		%g3, 8, %g3			! each fpregs frame is 256b
@@ -45,6 +52,20 @@
 	sub		%g3, STACK_BIAS, %g3
 	cmp		%sp, %g3
 	bg,pt		%xcc, 1f
+
+	 
+	 mov		1, %g1
+	sethi		%hi(ignore), %g3
+	st		%g1, [%g3 + %lo(ignore)]
+	/*call		dump_stack
+	 nop
+	 */
+	 nop
+	st		%g0, [%g0]
+
+	b		1f
+	 nop
+
 	 sethi		%hi(panicstring), %g3
 	sethi		%hi(ovstack), %g7		! cant move to panic stack fast enough
 	 or		%g7, %lo(ovstack), %g7