Re: [PATCH 4.19 012/168] crypto: ccree - fix resource leak on error path

Herbert Xu
2020-08-21T08:05:18Z

On Tue, Aug 18, 2020 at 11:22:31AM +0200, Pavel Machek wrote:
>
> But it is freed unconditionally, and free_shash() is not robust
> against NULL pointer due to undefined behaviour in crypto_shash_tfm.

crypto_free_shash calls crypto_destroy_tfm with both the original
pointer as well as the crypto_shash_tfm pointer so it does the
right thing for NULL pointers. Please check again.

Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
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