[PATCH 2/2] powerpc/mm: Blacklist SLB symbols from kprobe
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2017-02-16 05:38:50
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
We can't sensibly take a trap at this point. So, blacklist these symbols. Reported-by: Anton Blanchard <redacted> Signed-off-by: Naveen N. Rao <redacted> Signed-off-by: Michael Ellerman <mpe@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