Commit 70948c05 authored May 13, 2018 by Masami Hiramatsu Committed by Russell King May 19, 2018

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: 0dc016db ("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>

parent 69af7e23

arch/arm/probes/kprobes/opt-arm.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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)
		{