[PATCH 02/12] powerpc/82xx: Blacklist pq2_restart() for kprobe

Christophe Leroy christophe.leroy at c-s.fr
Sun Mar 29 20:41:02 AEDT 2020


kprobe does not handle events happening in real mode, all
functions running with MMU disabled have to be blacklisted.

Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
---
 arch/powerpc/platforms/82xx/pq2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/platforms/82xx/pq2.c b/arch/powerpc/platforms/82xx/pq2.c
index 1cdd5ed9d896..3b5cb39a564c 100644
--- a/arch/powerpc/platforms/82xx/pq2.c
+++ b/arch/powerpc/platforms/82xx/pq2.c
@@ -10,6 +10,8 @@
  * Copyright (c) 2006 MontaVista Software, Inc.
  */
 
+#include <linux/kprobes.h>
+
 #include <asm/cpm2.h>
 #include <asm/io.h>
 #include <asm/pci-bridge.h>
@@ -29,6 +31,7 @@ void __noreturn pq2_restart(char *cmd)
 
 	panic("Restart failed\n");
 }
+NOKPROBE_SYMBOL(pq2_restart)
 
 #ifdef CONFIG_PCI
 static int pq2_pci_exclude_device(struct pci_controller *hose,
-- 
2.25.0



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