[PATCH v4 27/45] crypto: kmsan: disable accelerated configs under KMSAN

Alexander Potapenko
2022-07-01T14:27:40Z

KMSAN is unable to understand when initialized values come from assembly.
Disable accelerated configs in KMSAN builds to prevent false positive
reports.

Signed-off-by: Alexander Potapenko <glider@google.com>

---

Link: https://linux-review.googlesource.com/id/Idb2334bf3a1b68b31b399709baefaa763038cc50
---
crypto/Kconfig | 30 ++++++++++++++++++++++++++++++
drivers/net/Kconfig | 1 +
2 files changed, 31 insertions(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 1d44893a997ba..7ddda6072ef35 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -298,6 +298,7 @@ config CRYPTO_CURVE25519
config CRYPTO_CURVE25519_X86
tristate "x86_64 accelerated Curve25519 scalar multiplication library"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_LIB_CURVE25519_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CURVE25519

@@ -346,11 +347,13 @@ config CRYPTO_AEGIS128
config CRYPTO_AEGIS128_SIMD
bool "Support SIMD acceleration for AEGIS-128"
depends on CRYPTO_AEGIS128 && ((ARM || ARM64) && KERNEL_MODE_NEON)
+ depends on !KMSAN # avoid false positives from assembly
default y

config CRYPTO_AEGIS128_AESNI_SSE2
tristate "AEGIS-128 AEAD algorithm (x86_64 AESNI+SSE2 implementation)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_AEAD
select CRYPTO_SIMD
help
@@ -487,6 +490,7 @@ config CRYPTO_NHPOLY1305
config CRYPTO_NHPOLY1305_SSE2
tristate "NHPoly1305 hash function (x86_64 SSE2 implementation)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_NHPOLY1305
help
SSE2 optimized implementation of the hash function used by the
@@ -495,6 +499,7 @@ config CRYPTO_NHPOLY1305_SSE2
config CRYPTO_NHPOLY1305_AVX2
tristate "NHPoly1305 hash function (x86_64 AVX2 implementation)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_NHPOLY1305
help
AVX2 optimized implementation of the hash function used by the
@@ -608,6 +613,7 @@ config CRYPTO_CRC32C
config CRYPTO_CRC32C_INTEL
tristate "CRC32c INTEL hardware acceleration"
depends on X86
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_HASH
help
In Intel processor with SSE4.2 supported, the processor will
@@ -648,6 +654,7 @@ config CRYPTO_CRC32
config CRYPTO_CRC32_PCLMUL
tristate "CRC32 PCLMULQDQ hardware acceleration"
depends on X86
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_HASH
select CRC32
help
@@ -713,6 +720,7 @@ config CRYPTO_BLAKE2S
config CRYPTO_BLAKE2S_X86
tristate "BLAKE2s digest algorithm (x86 accelerated version)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_LIB_BLAKE2S_GENERIC
select CRYPTO_ARCH_HAVE_LIB_BLAKE2S

@@ -727,6 +735,7 @@ config CRYPTO_CRCT10DIF
config CRYPTO_CRCT10DIF_PCLMUL
tristate "CRCT10DIF PCLMULQDQ hardware acceleration"
depends on X86 && 64BIT && CRC_T10DIF
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_HASH
help
For x86_64 processors with SSE4.2 and PCLMULQDQ supported,
@@ -779,6 +788,7 @@ config CRYPTO_POLY1305
config CRYPTO_POLY1305_X86_64
tristate "Poly1305 authenticator algorithm (x86_64/SSE2/AVX2)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_LIB_POLY1305_GENERIC
select CRYPTO_ARCH_HAVE_LIB_POLY1305
help
@@ -867,6 +877,7 @@ config CRYPTO_SHA1
config CRYPTO_SHA1_SSSE3
tristate "SHA1 digest algorithm (SSSE3/AVX/AVX2/SHA-NI)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SHA1
select CRYPTO_HASH
help
@@ -878,6 +889,7 @@ config CRYPTO_SHA1_SSSE3
config CRYPTO_SHA256_SSSE3
tristate "SHA256 digest algorithm (SSSE3/AVX/AVX2/SHA-NI)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SHA256
select CRYPTO_HASH
help
@@ -890,6 +902,7 @@ config CRYPTO_SHA256_SSSE3
config CRYPTO_SHA512_SSSE3
tristate "SHA512 digest algorithm (SSSE3/AVX/AVX2)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SHA512
select CRYPTO_HASH
help
@@ -1065,6 +1078,7 @@ config CRYPTO_WP512
config CRYPTO_GHASH_CLMUL_NI_INTEL
tristate "GHASH hash function (CLMUL-NI accelerated)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_CRYPTD
help
This is the x86_64 CLMUL-NI accelerated implementation of
@@ -1115,6 +1129,7 @@ config CRYPTO_AES_TI
config CRYPTO_AES_NI_INTEL
tristate "AES cipher algorithms (AES-NI)"
depends on X86
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_AEAD
select CRYPTO_LIB_AES
select CRYPTO_ALGAPI
@@ -1239,6 +1254,7 @@ config CRYPTO_BLOWFISH_COMMON
config CRYPTO_BLOWFISH_X86_64
tristate "Blowfish cipher algorithm (x86_64)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_BLOWFISH_COMMON
imply CRYPTO_CTR
@@ -1269,6 +1285,7 @@ config CRYPTO_CAMELLIA
config CRYPTO_CAMELLIA_X86_64
tristate "Camellia cipher algorithm (x86_64)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
imply CRYPTO_CTR
help
@@ -1285,6 +1302,7 @@ config CRYPTO_CAMELLIA_X86_64
config CRYPTO_CAMELLIA_AESNI_AVX_X86_64
tristate "Camellia cipher algorithm (x86_64/AES-NI/AVX)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_CAMELLIA_X86_64
select CRYPTO_SIMD
@@ -1303,6 +1321,7 @@ config CRYPTO_CAMELLIA_AESNI_AVX_X86_64
config CRYPTO_CAMELLIA_AESNI_AVX2_X86_64
tristate "Camellia cipher algorithm (x86_64/AES-NI/AVX2)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_CAMELLIA_AESNI_AVX_X86_64
help
Camellia cipher algorithm module (x86_64/AES-NI/AVX2).
@@ -1348,6 +1367,7 @@ config CRYPTO_CAST5
config CRYPTO_CAST5_AVX_X86_64
tristate "CAST5 (CAST-128) cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_CAST5
select CRYPTO_CAST_COMMON
@@ -1371,6 +1391,7 @@ config CRYPTO_CAST6
config CRYPTO_CAST6_AVX_X86_64
tristate "CAST6 (CAST-256) cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_CAST6
select CRYPTO_CAST_COMMON
@@ -1404,6 +1425,7 @@ config CRYPTO_DES_SPARC64
config CRYPTO_DES3_EDE_X86_64
tristate "Triple DES EDE cipher algorithm (x86-64)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_LIB_DES
imply CRYPTO_CTR
@@ -1461,6 +1483,7 @@ config CRYPTO_CHACHA20
config CRYPTO_CHACHA20_X86_64
tristate "ChaCha stream cipher algorithms (x86_64/SSSE3/AVX2/AVX-512VL)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_ARCH_HAVE_LIB_CHACHA
@@ -1504,6 +1527,7 @@ config CRYPTO_SERPENT
config CRYPTO_SERPENT_SSE2_X86_64
tristate "Serpent cipher algorithm (x86_64/SSE2)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_SERPENT
select CRYPTO_SIMD
@@ -1523,6 +1547,7 @@ config CRYPTO_SERPENT_SSE2_X86_64
config CRYPTO_SERPENT_SSE2_586
tristate "Serpent cipher algorithm (i586/SSE2)"
depends on X86 && !64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_SERPENT
select CRYPTO_SIMD
@@ -1542,6 +1567,7 @@ config CRYPTO_SERPENT_SSE2_586
config CRYPTO_SERPENT_AVX_X86_64
tristate "Serpent cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_SERPENT
select CRYPTO_SIMD
@@ -1562,6 +1588,7 @@ config CRYPTO_SERPENT_AVX_X86_64
config CRYPTO_SERPENT_AVX2_X86_64
tristate "Serpent cipher algorithm (x86_64/AVX2)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SERPENT_AVX_X86_64
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
@@ -1706,6 +1733,7 @@ config CRYPTO_TWOFISH_586
config CRYPTO_TWOFISH_X86_64
tristate "Twofish cipher algorithm (x86_64)"
depends on (X86 || UML_X86) && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_ALGAPI
select CRYPTO_TWOFISH_COMMON
imply CRYPTO_CTR
@@ -1723,6 +1751,7 @@ config CRYPTO_TWOFISH_X86_64
config CRYPTO_TWOFISH_X86_64_3WAY
tristate "Twofish cipher algorithm (x86_64, 3-way parallel)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_TWOFISH_COMMON
select CRYPTO_TWOFISH_X86_64
@@ -1743,6 +1772,7 @@ config CRYPTO_TWOFISH_X86_64_3WAY
config CRYPTO_TWOFISH_AVX_X86_64
tristate "Twofish cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
+ depends on !KMSAN # avoid false positives from assembly
select CRYPTO_SKCIPHER
select CRYPTO_SIMD
select CRYPTO_TWOFISH_COMMON
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index b2a4f998c180e..fed89b6981759 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -76,6 +76,7 @@ config WIREGUARD
tristate "WireGuard secure network tunnel"
depends on NET && INET
depends on IPV6 || !IPV6
+ depends on !KMSAN # KMSAN doesn't support the crypto configs below
select NET_UDP_TUNNEL
select DST_CACHE
select CRYPTO
--
2.37.0.rc0.161.g10f37bed90-goog