The patch titled
Subject: lib/nmi_backtrace.c: fix kernel text address leak
has been added to the -mm tree. Its filename is
lib_backtrace-fix-kernel-text-address-leak.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib_backtrace-fix-kernel-text-address-leak.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib_backtrace-fix-kernel-text-address-leak.patch
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------------------------------------------------------
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>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@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)
_
Patches currently in -mm which might be from changcheng.liu@xxxxxxxxx are
lib_backtrace-fix-kernel-text-address-leak.patch
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