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Linux: Fix uninitialized variable usage in zio_do_crypt_data() #13944

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Sep 26, 2022
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Linux: Fix uninitialized variable usage in zio_do_crypt_data() #13944

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6 changes: 3 additions & 3 deletions module/os/linux/zfs/zio_crypt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1891,6 +1891,9 @@ zio_do_crypt_data(boolean_t encrypt, zio_crypt_key_t *key,
crypto_ctx_template_t tmpl;
uint8_t *authbuf = NULL;

memset(&puio, 0, sizeof (puio));
memset(&cuio, 0, sizeof (cuio));

/*
* If the needed key is the current one, just use it. Otherwise we
* need to generate a temporary one from the given salt + master key.
Expand Down Expand Up @@ -1950,9 +1953,6 @@ zio_do_crypt_data(boolean_t encrypt, zio_crypt_key_t *key,
/* If the hardware implementation fails fall back to software */
}

memset(&puio, 0, sizeof (puio));
memset(&cuio, 0, sizeof (cuio));

/* create uios for encryption */
ret = zio_crypt_init_uios(encrypt, key->zk_version, ot, plainbuf,
cipherbuf, datalen, byteswap, mac, &puio, &cuio, &enc_len,
Expand Down