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authorMichael Ellerman <mpe@ellerman.id.au>2017-02-13 07:30:19 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-17 02:58:52 +0300
commita90e883d8b8fb07ddea4d9618ce58bf72bce7f00 (patch)
tree1615ecd328ad8af484d27274772594750887fbf0
parente471c393dfafff54c65979cbda7d5a0eb38590f4 (diff)
downloadlinux-a90e883d8b8fb07ddea4d9618ce58bf72bce7f00.tar.xz
powerpc/mm: Blacklist SLB symbols from kprobe
We can't sensibly take a trap at this point. So, blacklist these symbols. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r--arch/powerpc/mm/slb_low.S8
1 files changed, 8 insertions, 0 deletions
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