From: "Liu, Changcheng" <changcheng.liu@xxxxxxxxx> Subject: 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 <changcheng.liu@xxxxxxxxx> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Reviewed-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/nmi_backtrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN lib/nmi_backtrace.c~lib_backtrace-fix-kernel-text-address-leak lib/nmi_backtrace.c --- a/lib/nmi_backtrace.c~lib_backtrace-fix-kernel-text-address-leak +++ a/lib/nmi_backtrace.c @@ -93,8 +93,8 @@ bool nmi_cpu_backtrace(struct pt_regs *r 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) _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
