Messages in this thread Patch in this message | | | From | "Tobin C. Harding" <> | Subject | [PATCH] doc: update 'unique identifiers' | Date | Tue, 5 Dec 2017 08:22:40 +1100 |
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Advice about what to use as a unique identifier is no longer valid since patch series was merged to hash pointers printed with %p. We can use this as a unique identifier now.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@tobin.cc> --- 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
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