From mboxrd@z Thu Jan 1 00:00:00 1970 From: mhiramat@kernel.org (Masami Hiramatsu) Date: Sat, 24 Feb 2018 00:02:43 +0900 Subject: [PATCH] [BUGFIX] arm: kprobes: Prohibit probing on optimized_callback Message-ID: <151939816362.3492.13470623813255297405.stgit@devbox> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- arch/arm/probes/kprobes/opt-arm.c | 1 + 1 file changed, 1 insertion(+) 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) {