[PATCH 2/2] powerpc/mm: Blacklist SLB symbols from kprobe

[Michael Ellerman]

We can't sensibly take a trap at this point. So, blacklist these
symbols.

Reported-by: Anton Blanchard <anton at samba.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao at linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/mm/slb_low.S | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 9beed92c1900..a85e06ea6c20 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -272,3 +272,11 @@ slb_compare_rr_to_size:
 	clrrdi	r3,r3,SID_SHIFT_1T	/* clear out non-ESID bits */
 	b	7b
 
+
+_ASM_NOKPROBE_SYMBOL(slb_allocate_realmode)
+_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_linear)
+_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_io)
+_ASM_NOKPROBE_SYMBOL(slb_compare_rr_to_size)
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+_ASM_NOKPROBE_SYMBOL(slb_miss_kernel_load_vmemmap)
+#endif
-- 
2.7.4