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lib/nmi_backtrace.c: fix kernel text address leak

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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]>
This commit is contained in:
Liu, Changcheng authored and Linus Torvalds committed 2017-11-17 16:10:02 -08:00
1 parent 36a3d1dd4e
commit 2f9b7e08cb
1 file changed
+2 -2
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lib/nmi_backtrace.c
+2 -2
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@@ -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)