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authorMasami Hiramatsu <mhiramat@kernel.org>2018-05-13 07:04:10 +0300
committerRussell King <rmk+kernel@armlinux.org.uk>2018-05-19 13:35:56 +0300
commit70948c05fdde0aac32f9667856a88725c192fa40 (patch)
tree438853e99d5d6ab02ef59df38856f858eb8b0f19
parent69af7e23a6870df2ea6fa79ca16493d59b3eebeb (diff)
downloadlinux-70948c05fdde0aac32f9667856a88725c192fa40.tar.xz
ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
Prohibit probing on optimized_callback() because it is called from kprobes itself. If we put a kprobes on it, that will cause a recursive call loop. Mark it NOKPROBE_SYMBOL. Fixes: 0dc016dbd820 ("ARM: kprobes: enable OPTPROBES for ARM 32") Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: stable@vger.kernel.org Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--arch/arm/probes/kprobes/opt-arm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/probes/kprobes/opt-arm.c b/arch/arm/probes/kprobes/opt-arm.c
index ddc5a82eb10d..b2aa9b32bff2 100644
--- a/arch/arm/probes/kprobes/opt-arm.c
+++ b/arch/arm/probes/kprobes/opt-arm.c
@@ -192,6 +192,7 @@ optimized_callback(struct optimized_kprobe *op, struct pt_regs *regs)
local_irq_restore(flags);
}
+NOKPROBE_SYMBOL(optimized_callback)
int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *orig)
{