From: Wang Xuerui <wangxue...@qiniu.com>
This is present since the introduction of iwlmvm.
Example stack trace on MIPS:
[<ffffffffc0789328>] iwl_mvm_rx_rx_mpdu+0xa8/0xb88 [iwlmvm]
[<ffffffffc0632b40>] iwl_pcie_rx_handle+0x420/0xc48 [iwlwifi]
Tested with a Wireless AC 7265 for ~6 months, confirmed to fix the
problem. No other unaligned accesses are spotted yet.
Signed-off-by: Wang Xuerui <wangxue...@qiniu.com>
Signed-off-by: Luca Coelho <luciano.coe...@intel.com>
---
drivers/net/wireless/intel/iwlwifi/mvm/rx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
index 0ad8ed23a455..5ee33c8ae9d2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
@@ -60,6 +60,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
+#include <asm/unaligned.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "iwl-trans.h"
@@ -357,7 +358,7 @@ void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct
napi_struct *napi,
rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
len = le16_to_cpu(rx_res->byte_count);
- rx_pkt_status = le32_to_cpup((__le32 *)
+ rx_pkt_status = get_unaligned_le32((__le32 *)
(pkt->data + sizeof(*rx_res) + len));
/* Dont use dev_alloc_skb(), we'll have enough headroom once
--
2.23.0
