Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 regression fix from Will Deacon:
"Ard found a nasty arm64 regression in 4.18 where the AES ghash/gcm
code doesn't notify the kernel about its use of the vector registers,
therefore potentially corrupting live user state.
The fix is straightforward and Herbert agreed for it to go via arm64"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
crypto/arm64: aes-ce-gcm - add missing kernel_neon_begin/end pair
+6
-2
+6
-2
arch/arm64/crypto/ghash-ce-glue.c
+6
-2
arch/arm64/crypto/ghash-ce-glue.c
···
488
488
err = skcipher_walk_done(&walk,
489
489
walk.nbytes % AES_BLOCK_SIZE);
490
490
}
491
-
if (walk.nbytes)
492
-
pmull_gcm_encrypt_block(iv, iv, NULL,
491
+
if (walk.nbytes) {
492
+
kernel_neon_begin();
493
+
pmull_gcm_encrypt_block(iv, iv, ctx->aes_key.key_enc,
493
494
num_rounds(&ctx->aes_key));
495
+
kernel_neon_end();
496
+
}
497
+
494
498
} else {
495
499
__aes_arm64_encrypt(ctx->aes_key.key_enc, tag, iv,
496
500
num_rounds(&ctx->aes_key));