crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak
authorHerbert Xu <herbert@gondor.apana.org.au>
Wed, 8 May 2024 08:39:51 +0000 (16:39 +0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 17 May 2024 10:55:07 +0000 (18:55 +0800)
commitd3b17c6d9dddc2db3670bc9be628b122416a3d26
treef31b4008e46a81dda90b902328137bf20cce77d9
parent13909a0c88972c5ef5d13f44d1a8bf065a31bdf4
crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak

Using completion_done to determine whether the caller has gone
away only works after a complete call.  Furthermore it's still
possible that the caller has not yet called wait_for_completion,
resulting in another potential UAF.

Fix this by making the caller use cancel_work_sync and then freeing
the memory safely.

Fixes: 7d42e097607c ("crypto: qat - resolve race condition during AER recovery")
Cc: <stable@vger.kernel.org> #6.8+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/intel/qat/qat_common/adf_aer.c