On Thu, May 18, 2017 at 8:09 AM, Herbert Xu wrote:
> On Thu, May 11, 2017 at 02:53:43PM +0300, Gilad Ben-Yossef wrote:
>> drbg_kcapi_sym_ctr() was using wait_for_completion_interruptible() to
>> wait for completion of async crypto op but if a signal occurs it
>> may return before DMA ops of HW cry
On Thu, May 11, 2017 at 02:53:43PM +0300, Gilad Ben-Yossef wrote:
> drbg_kcapi_sym_ctr() was using wait_for_completion_interruptible() to
> wait for completion of async crypto op but if a signal occurs it
> may return before DMA ops of HW crypto provider finish, thus
> corrupting the output buffer.
Hi Gilad,
On Thu, May 11, 2017 at 02:53:43PM +0300, Gilad Ben-Yossef wrote:
> drbg_kcapi_sym_ctr() was using wait_for_completion_interruptible() to
> wait for completion of async crypto op but if a signal occurs it
> may return before DMA ops of HW crypto provider finish, thus
> corrupting the out
drbg_kcapi_sym_ctr() was using wait_for_completion_interruptible() to
wait for completion of async crypto op but if a signal occurs it
may return before DMA ops of HW crypto provider finish, thus
corrupting the output buffer.
Resolve this by using wait_for_completion() instead.
Reported-by: Eric
