tree eaa1349ae5721cf907d810d54d9e66198ac2d7bd
parent 9933e113c2e87a9f46a40fde8dafbf801dca1ab9
author Gilad Ben-Yossef <gilad@benyossef.com> 1495114163 +0300
committer Herbert Xu <herbert@gondor.apana.org.au> 1495514710 +0800

crypto: asymmetric_keys - handle EBUSY due to backlog correctly

public_key_verify_signature() was passing the CRYPTO_TFM_REQ_MAY_BACKLOG
flag to akcipher_request_set_callback() but was not handling correctly
the case where a -EBUSY error could be returned from the call to
crypto_akcipher_verify() if backlog was used, possibly casuing
data corruption due to use-after-free of buffers.

Resolve this by handling -EBUSY correctly.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
CC: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>