diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0035-crypto-x86-chacha-only-unregister-algorithms-if-regi.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0035-crypto-x86-chacha-only-unregister-algorithms-if-regi.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0035-crypto-x86-chacha-only-unregister-algorithms-if-regi.patch b/target/linux/generic/backport-5.4/080-wireguard-0035-crypto-x86-chacha-only-unregister-algorithms-if-regi.patch new file mode 100644 index 0000000000..4554ea898b --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0035-crypto-x86-chacha-only-unregister-algorithms-if-regi.patch @@ -0,0 +1,31 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Eric Biggers <ebiggers@google.com> +Date: Sun, 17 Nov 2019 23:21:58 -0800 +Subject: [PATCH] crypto: x86/chacha - only unregister algorithms if registered + +commit b62755aed3a3f5ca9edd2718339ccea3b6bbbe57 upstream. + +It's not valid to call crypto_unregister_skciphers() without a prior +call to crypto_register_skciphers(). + +Fixes: 84e03fa39fbe ("crypto: x86/chacha - expose SIMD ChaCha routine as library function") +Signed-off-by: Eric Biggers <ebiggers@google.com> +Acked-by: Ard Biesheuvel <ardb@kernel.org> +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + arch/x86/crypto/chacha_glue.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/arch/x86/crypto/chacha_glue.c ++++ b/arch/x86/crypto/chacha_glue.c +@@ -304,7 +304,8 @@ static int __init chacha_simd_mod_init(v + + static void __exit chacha_simd_mod_fini(void) + { +- crypto_unregister_skciphers(algs, ARRAY_SIZE(algs)); ++ if (boot_cpu_has(X86_FEATURE_SSSE3)) ++ crypto_unregister_skciphers(algs, ARRAY_SIZE(algs)); + } + + module_init(chacha_simd_mod_init); |