lib/nmi_backtrace.c: fix kernel text address leak

Don't leak idle function address in NMI backtrace. Link: http://lkml.kernel.org/r/20171106165648.GA95243@sofia Signed-off-by: Liu Changcheng <[email protected]> Reviewed-by: Petr Mladek <[email protected]> Reviewed-by: Josh Poimboeuf <[email protected]> Reviewed-by: Sergey Senozhatsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · Nov 18, 2017 · 2f9b7e0 · 2f9b7e0
1 parent 36a3d1d
commit 2f9b7e0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
@@ -93,8 +93,8 @@ 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",
-				cpu, instruction_pointer(regs));
+			pr_warn("NMI backtrace for cpu %d skipped: idling at %pS\n",
+				cpu, (void *)instruction_pointer(regs));
 		} else {
 			pr_warn("NMI backtrace for cpu %d\n", cpu);
 			if (regs)