[Intel-wired-lan] [PATCH S8 12/16] ice: Check for q_vector when stopping rings

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Anirudh Venkataramanan
> Sent: Friday, October 26, 2018 10:41 AM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH S8 12/16] ice: Check for q_vector when
> stopping rings
> 
> From: Tony Nguyen <anthony.l.nguyen at intel.com>
> 
> There is a gap in time between a VF reset, which sets the q_vector to NULL,
> and the VF requesting mapping of the q_vectors. If
> ice_vsi_stop_tx_rings() is called during this time, a NULL pointer dereference
> is encountered. Add a check in ice_vsi_stop_tx_rings() to ensure the
> q_vector is set to avoid this situation from occurring.
> 
> Signed-off-by: Tony Nguyen <anthony.l.nguyen at intel.com>
> Signed-off-by: Anirudh Venkataramanan
> <anirudh.venkataramanan at intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_lib.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>