linux-kernel - [PATCH 0001/0001] format idle IP output func+offset/length

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Date:   Mon, 6 Nov 2017 11:19:31 +0800
From:   "Liu, Changcheng" <changcheng.liu@...el.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        jpoimboe@...hat.com, Petr Mladek <pmladek@...e.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0001/0001] format idle IP output func+offset/length

kaslr feature is enabled in kernel.
Remove kernel text address when dumping idle IP info

Signed-off-by: Liu Changcheng <changcheng.liu@...el.com>
Signed-off-by: Jerry Liu <primerlink@...il.com>

diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
index 0bc0a35..9cc4178 100644
--- a/lib/nmi_backtrace.c
+++ b/lib/nmi_backtrace.c
@@ -92,7 +92,7 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
    if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
        arch_spin_lock(&lock);
        if (regs && cpu_in_idle(instruction_pointer(regs))) {
-           pr_warn("NMI backtrace for cpu %d skipped: idling at pc %#lx\n",
+           pr_warn("NMI backtrace for cpu %d skipped: idling at pc %pS\n",
                cpu, instruction_pointer(regs));
        } else {
            pr_warn("NMI backtrace for cpu %d\n", cpu);
-- 
2.7.4