Hi Tomas, url: https://github.com/0day-ci/linux/commits/Tomas-Bortoli/net-bluetooth-Fix-bound-check-in-event-handling/20190301-213647 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master smatch warnings: net/bluetooth/hci_event.c:3986 hci_inquiry_result_with_rssi_evt() warn: potential pointer math issue ('info' is a 120 bit pointer) # https://github.com/0day-ci/linux/commit/00305742c021794f147b348d45eb10ea26e5a514 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 00305742c021794f147b348d45eb10ea26e5a514 vim +3986 net/bluetooth/hci_event.c a9de9248 Marcel Holtmann 2007-10-20 3979 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) { 138d22ef Szymon Janc 2011-02-17 3980 struct inquiry_info_with_rssi_and_pscan_mode *info; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 138d22ef Szymon Janc 2011-02-17 3981 info = (void *) (skb->data + 1); a9de9248 Marcel Holtmann 2007-10-20 3982 e17acd40 Johan Hedberg 2011-03-30 3983 for (; num_rsp; num_rsp--, info++) { af58925c Marcel Holtmann 2014-07-01 3984 u32 flags; af58925c Marcel Holtmann 2014-07-01 3985 00305742 Tomas Bortoli 2019-02-28 @3986 if ((void *)(info + sizeof(info)) > ^^^^^^^^^^^^^^^^^^^ This is a pointer math bug. The options to fix it are: if ((void *)info + sizeof(info) > Or: if ((void *)(info + 1) > 00305742 Tomas Bortoli 2019-02-28 3987 (void *)(skb->data + skb->len)) 00305742 Tomas Bortoli 2019-02-28 3988 break; 00305742 Tomas Bortoli 2019-02-28 3989 a9de9248 Marcel Holtmann 2007-10-20 3990 bacpy(&data.bdaddr, &info->bdaddr); a9de9248 Marcel Holtmann 2007-10-20 3991 data.pscan_rep_mode = info->pscan_rep_mode; a9de9248 Marcel Holtmann 2007-10-20 3992 data.pscan_period_mode = info->pscan_period_mode; a9de9248 Marcel Holtmann 2007-10-20 3993 data.pscan_mode = info->pscan_mode; a9de9248 Marcel Holtmann 2007-10-20 3994 memcpy(data.dev_class, info->dev_class, 3); a9de9248 Marcel Holtmann 2007-10-20 3995 data.clock_offset = info->clock_offset; a9de9248 Marcel Holtmann 2007-10-20 3996 data.rssi = info->rssi; 41a96212 Marcel Holtmann 2008-07-14 3997 data.ssp_mode = 0x00; 3175405b Johan Hedberg 2012-01-04 3998 regards, dan carpenter --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
