> Jan,
> 
> Can you check if the problem occurs with this patch?

No issues in over-night test with this patch.

> --- a/drivers/crypto/vmx/vmx.c
> +++ b/drivers/crypto/vmx/vmx.c
> @@ -28,6 +28,8 @@
>  #include <asm/cputable.h>
>  #include <crypto/internal/hash.h>
>  
> +int p8_ghash_fallback_descsize(void);
> +
>  extern struct shash_alg p8_ghash_alg;
>  extern struct crypto_alg p8_aes_alg;
>  extern struct crypto_alg p8_aes_cbc_alg;
> @@ -45,6 +47,7 @@ int __init p8_init(void)
>  {
>       int ret = 0;
>       struct crypto_alg **alg_it;
> +     int ghash_descsize;
>  
>       for (alg_it = algs; *alg_it; alg_it++) {
>               ret = crypto_register_alg(*alg_it);
> @@ -59,6 +62,12 @@ int __init p8_init(void)
>       if (ret)
>               return ret;
>  
> +     ghash_descsize = p8_ghash_fallback_descsize();
> +     if (ghash_descsize < 0) {
> +             printk(KERN_ERR "Cannot get descsize for p8_ghash fallback\n");
> +             return ghash_descsize;
> +     }
> +     p8_ghash_alg.descsize += ghash_descsize;
>       ret = crypto_register_shash(&p8_ghash_alg);
>       if (ret) {
>               for (alg_it = algs; *alg_it; alg_it++)

I'd suggest to move this inside vmx/ghash.c to a new function, so all p8_ghash
related code is at single place. Then p8_init() would just call the new
function:
-    ret = crypto_register_shash(&p8_ghash_alg);
+    ret = register_p8_ghash();

Regards,
Jan

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