From: <neta...@amazon.com> Date: Sun, 19 Nov 2017 18:03:40 +0000 > From: Netanel Belgazal <neta...@amazon.com> > > In rare cases, ena driver would reset and re-start the device, > for example, in case of misbehaving application that causes > transmit timeout > > The first step in the reset procedure is to stop the Tx traffic by > calling ena_carrier_off(). > > After the driver have just started the device reset procedure, device > happens to send an asynchronous notification (via AENQ) to the driver > than there was a link change (to link-up state). > This link change is mapped to a call to netif_carrier_on() which > re-activates the Tx queues, violating the assumption of no tx traffic > until device reset is completed, as the reset task might still be in > the process of queues initialization, leading to an access to > uninitialized memory. > > Signed-off-by: Netanel Belgazal <neta...@amazon.com>
Applied.
