Advice about what to use as a unique identifier is no longer valid since patch series was merged to hash pointers printed with %p. We can use this as a unique identifier now. Signed-off-by: Tobin C. Harding <me@xxxxxxxx> --- Documentation/security/self-protection.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/security/self-protection.rst b/Documentation/security/self-protection.rst index 60c8bd8b77bf..f10f47cad825 100644 --- a/Documentation/security/self-protection.rst +++ b/Documentation/security/self-protection.rst @@ -274,8 +274,8 @@ Unique identifiers ------------------ Kernel memory addresses must never be used as identifiers exposed to -userspace. Instead, use an atomic counter, an idr, or similar unique -identifier. +userspace. Printk specifier %p hashes addresses by default now and can be +used as a unique identifier. Memory initialization --------------------- -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
