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From: Dave Weinstein <olorin@google.com>
Subject: lib: vsprintf: default kptr_restrict to the maximum value
Set the initial value of kptr_restrict to the maximum
setting rather than the minimum setting, to ensure that
early boot logging is not leaking information.
Cc: William Roberts <william.c.roberts@intel.com>
Cc: Chris Fries <cfries@google.com>
Signed-off-by: Dave Weinstein <olorin@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/vsprintf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -395,7 +395,7 @@ struct printf_spec {
#define FIELD_WIDTH_MAX ((1 << 23) - 1)
#define PRECISION_MAX ((1 << 15) - 1)
-int kptr_restrict __read_mostly;
+int kptr_restrict __read_mostly = 4;
/*
* Always cleanse %p and %pK specifiers
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