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authorJulia Lawall <Julia.Lawall@lip6.fr>2014-11-30 18:03:48 +0100
committerMoyster <oysterized@gmail.com>2019-07-08 13:36:44 +0200
commitc40adf4802ec6c7b2f2eac7a28f384b3beb3759d (patch)
treed76d1aeaf2a24859e64fc93fd2a6af7db9869768 /lib
parentca1f667748739a6a0bcce8db79531f0f09d6a8cd (diff)
crypto: arm - replace memset by memzero_explicit
Memset on a local variable may be removed when it is called just before the variable goes out of scope. Using memzero_explicit defeats this optimization. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; type T; @@ { ... when any T x[...]; ... when any when exists - memset + memzero_explicit (x, -0, ...) ... when != x when strict } // </smpl> This change was suggested by Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Change-Id: I89b5957f922b7e5568a405c212eb186449f1deab (cherry picked from commit 025f4cbff16e284192b04bfa1f7b19551c1f5af3)
Diffstat (limited to 'lib')
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