| Message ID | 20230808215417.117910-2-przemyslaw.kitszel@intel.com (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | ice: split ice_aq_wait_for_event() func into two | expand |
> -----Original Message----- > From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Przemek Kitszel > Sent: Wednesday, August 9, 2023 3:24 AM > To: intel-wired-lan@lists.osuosl.org > Cc: netdev@vger.kernel.org; Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Simon Horman <horms@kernel.org>; Kitszel, Przemyslaw <przemyslaw.kitszel@intel.com> > Subject: [Intel-wired-lan] [PATCH iwl-next v4 1/3] ice: ice_aq_check_events: fix off-by-one check when filling buffer > > Allow task's event buffer to be filled also in the case that it's size is exactly the size of the message. > > Fixes: d69ea414c9b4 ("ice: implement device flash update via devlink") > Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> > Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> > --- > drivers/net/ethernet/intel/ice/ice_main.c | 13 +++++++------ > 1 file changed, 7 insertions(+), 6 deletions(-) > Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index a73895483e6c..279e7f790312 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -1357,23 +1357,24 @@ int ice_aq_wait_for_event(struct ice_pf *pf, u16 opcode, unsigned long timeout, static void ice_aq_check_events(struct ice_pf *pf, u16 opcode, struct ice_rq_event_info *event) { + struct ice_rq_event_info *task_ev; struct ice_aq_task *task; bool found = false; spin_lock_bh(&pf->aq_wait_lock); hlist_for_each_entry(task, &pf->aq_wait_list, entry) { if (task->state || task->opcode != opcode) continue; - memcpy(&task->event->desc, &event->desc, sizeof(event->desc)); - task->event->msg_len = event->msg_len; + task_ev = task->event; + memcpy(&task_ev->desc, &event->desc, sizeof(event->desc)); + task_ev->msg_len = event->msg_len; /* Only copy the data buffer if a destination was set */ - if (task->event->msg_buf && - task->event->buf_len > event->buf_len) { - memcpy(task->event->msg_buf, event->msg_buf, + if (task_ev->msg_buf && task_ev->buf_len >= event->buf_len) { + memcpy(task_ev->msg_buf, event->msg_buf, event->buf_len); - task->event->buf_len = event->buf_len; + task_ev->buf_len = event->buf_len; } task->state = ICE_AQ_TASK_COMPLETE;
Allow task's event buffer to be filled also in the case that it's size is exactly the size of the message. Fixes: d69ea414c9b4 ("ice: implement device flash update via devlink") Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> --- drivers/net/ethernet/intel/ice/ice_main.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)