On Fri, Feb 03, 2017 at 01:30:40PM +0300, Dan Carpenter wrote:
> We should check that we're within bounds first before checking that
> "chip->active_banks[i] != TPM2_ALG_ERROR" so I've re-ordered the two
> checks.
>
> Signed-off-by: Dan Carpenter <[email protected]>
Thank you, good catch! Do you mind if I squash this.
/Jarkko
>
> diff --git a/drivers/char/tpm/tpm-interface.c
> b/drivers/char/tpm/tpm-interface.c
> index 423938e8570f..087748b8264f 100644
> --- a/drivers/char/tpm/tpm-interface.c
> +++ b/drivers/char/tpm/tpm-interface.c
> @@ -800,8 +800,8 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8
> *hash)
> if (chip->flags & TPM_CHIP_FLAG_TPM2) {
> memset(digest_list, 0, sizeof(digest_list));
>
> - for (i = 0; chip->active_banks[i] != TPM2_ALG_ERROR &&
> - i < ARRAY_SIZE(chip->active_banks); i++) {
> + for (i = 0; i < ARRAY_SIZE(chip->active_banks) &&
> + chip->active_banks[i] != TPM2_ALG_ERROR; i++) {
> digest_list[i].alg_id = chip->active_banks[i];
> memcpy(digest_list[i].digest, hash, TPM_DIGEST_SIZE);
> count++;
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