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powerpc/82xx: Blacklist pq2_restart() for kprobe
author
Christophe Leroy
<christophe.leroy@c-s.fr>
Tue, 31 Mar 2020 16:03:37 +0000
(16:03 +0000)
committer
Michael Ellerman
<mpe@ellerman.id.au>
Tue, 2 Jun 2020 10:59:09 +0000
(20:59 +1000)
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@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link:
https://lore.kernel.org/r/5dca36682383577a3c2b2bca4d577e8654944461.1585670437.git.christophe.leroy@c-s.fr
arch/powerpc/platforms/82xx/pq2.c
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diff --git
a/arch/powerpc/platforms/82xx/pq2.c
b/arch/powerpc/platforms/82xx/pq2.c
index
1cdd5ed
..
3b5cb39
100644
(file)
--- 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,