[PATCH 05/12] powerpc/mem: Blacklist flush_dcache_icache_phys() for kprobe
From: Christophe Leroy <hidden>
Date: 2020-03-29 09:41:38
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
kprobe does not handle events happening in real mode, all functions running with MMU disabled have to be blacklisted. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/mm/mem.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 9b4f5fb719e0..bcb6af6ba29a 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c@@ -32,6 +32,7 @@ #include <linux/vmalloc.h> #include <linux/memremap.h> #include <linux/dma-direct.h> +#include <linux/kprobes.h> #include <asm/pgalloc.h> #include <asm/prom.h>
@@ -466,6 +467,7 @@ static void flush_dcache_icache_phys(unsigned long physaddr) : "r" (nb), "r" (msr), "i" (bytes), "r" (msr0) : "ctr", "memory"); } +NOKPROBE_SYMBOL(flush_dcache_icache_phys) #endif // !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC64) /*
--
2.25.0