tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: c9f2baaa18b5ea8f006a2b3a616da9597c71d15e commit: d70e44fef8621aeae895e1cbc62059df9e31836b [9226/9381] Bluetooth: Reject connection with the device which has same BD_ADDR config: arm64-randconfig-r002-20230421 (https://download.01.org/0day-ci/archive/20231003/202310032158.OvfQjd58-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231003/202310032158.OvfQjd58-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310032158.OvfQjd58-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): net/bluetooth/hci_event.c: In function 'hci_cc_read_class_of_dev': net/bluetooth/hci_event.c:522:9: warning: 'memcpy' writing 3 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=] 522 | memcpy(hdev->dev_class, rp->dev_class, 3); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: note: destination object is likely at address zero In file included from net/bluetooth/hci_event.c:30: In function 'bacmp', inlined from 'hci_conn_request_evt' at net/bluetooth/hci_event.c:3274:7: >> include/net/bluetooth/bluetooth.h:364:16: warning: 'memcmp' specified bound 6 exceeds source size 0 [-Wstringop-overread] 364 | return memcmp(ba1, ba2, sizeof(bdaddr_t)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/memcmp +364 include/net/bluetooth/bluetooth.h ^1da177e4c3f41 Linus Torvalds 2005-04-16 360 ^1da177e4c3f41 Linus Torvalds 2005-04-16 361 /* Copy, swap, convert BD Address */ f53c20e93612f7 David Rheinsberg 2013-04-06 362 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) ^1da177e4c3f41 Linus Torvalds 2005-04-16 363 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 @364 return memcmp(ba1, ba2, sizeof(bdaddr_t)); ^1da177e4c3f41 Linus Torvalds 2005-04-16 365 } f53c20e93612f7 David Rheinsberg 2013-04-06 366 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) ^1da177e4c3f41 Linus Torvalds 2005-04-16 367 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 368 memcpy(dst, src, sizeof(bdaddr_t)); ^1da177e4c3f41 Linus Torvalds 2005-04-16 369 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 370 :::::: The code at line 364 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
