From: Masami Hiramatsu Date: Sun, 13 May 2018 04:04:10 +0000 (+0100) Subject: ARM: 8770/1: kprobes: Prohibit probing on optimized_callback X-Git-Tag: v4.14.43~57 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd4aeb75dab5ac3658ea981922fa1dc16708c823;p=platform%2Fkernel%2Flinux-rpi.git ARM: 8770/1: kprobes: Prohibit probing on optimized_callback commit 70948c05fdde0aac32f9667856a88725c192fa40 upstream. 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 Cc: stable@vger.kernel.org Signed-off-by: Russell King Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/arm/probes/kprobes/opt-arm.c b/arch/arm/probes/kprobes/opt-arm.c index ddc5a82..b2aa9b3 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) {