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authorEric Biggers <ebiggers@google.com>2017-12-29 17:00:46 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2018-01-05 08:43:09 +0100
commitce8614a312ef750bb60677bb13680cb27d1c284b (patch)
tree842f01d86dc235bcd80c8544969d9fffeaec30c5 /crypto/proc.c
parentcrypto: inside-secure - fix hash when length is a multiple of a block (diff)
downloadlinux-ce8614a312ef750bb60677bb13680cb27d1c284b.tar.xz
linux-ce8614a312ef750bb60677bb13680cb27d1c284b.zip
crypto: algapi - convert cra_refcnt to refcount_t
Reference counters should use refcount_t rather than atomic_t, since the refcount_t implementation can prevent overflows, reducing the exploitability of reference leak bugs. crypto_alg.cra_refcount is a reference counter with the usual semantics, so switch it over to refcount_t. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/proc.c')
-rw-r--r--crypto/proc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/proc.c b/crypto/proc.c
index 2cc10c96d753..822fcef6d91c 100644
--- a/crypto/proc.c
+++ b/crypto/proc.c
@@ -46,7 +46,7 @@ static int c_show(struct seq_file *m, void *p)
seq_printf(m, "driver : %s\n", alg->cra_driver_name);
seq_printf(m, "module : %s\n", module_name(alg->cra_module));
seq_printf(m, "priority : %d\n", alg->cra_priority);
- seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt));
+ seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
seq_printf(m, "selftest : %s\n",
(alg->cra_flags & CRYPTO_ALG_TESTED) ?
"passed" : "unknown");