Hello Thierry Escande,
The patch 1c7a4c24fbfd: "NFC Digital: Add target NFC-DEP support"
from Sep 19, 2013, leads to the following static checker warning:
net/nfc/digital_dep.c:1303 digital_tg_recv_dep_req()
error: double free of 'resp'
net/nfc/digital_dep.c
1290
1291 rc = nfc_tm_data_received(ddev->nfc_dev, resp);
^^^^
resp is freed on error here.
1292
1293 exit:
1294 kfree_skb(ddev->chaining_skb);
1295 ddev->chaining_skb = NULL;
1296
1297 ddev->atn_count = 0;
1298
1299 kfree_skb(ddev->saved_skb);
1300 ddev->saved_skb = NULL;
1301
1302 if (rc)
1303 kfree_skb(resp);
^^^^^^^^^^^^^^^
Leading to a double free here, I think.
1304
1305 return;
1306
1307 free_resp:
1308 dev_kfree_skb(resp);
1309 }
regards,
dan carpenter
