tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3 commit: 4184da4f316a549ae732d91088571fef46a2f58d staging: vchiq: fix __user annotations config: microblaze-randconfig-m031-20201219 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> New smatch warnings: drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:1056 vchiq_get_user_ptr() error: uninitialized symbol 'ptr'. Old smatch warnings: drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:476 vchiq_blocking_bulk_transfer() warn: returning -1 instead of -ENOMEM is sloppy drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:606 service_callback() warn: argument 3 to %lx specifier is cast from pointer drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:606 service_callback() warn: argument 7 to %lx specifier is cast from pointer drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:606 service_callback() warn: argument 8 to %lx specifier is cast from pointer drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:606 service_callback() warn: argument 9 to %lx specifier is cast from pointer drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:1001 vchiq_irq_queue_bulk_tx_rx() error: uninitialized symbol 'userdata'. drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:1890 vchiq_release() warn: argument 3 to %lx specifier is cast from pointer vim +/ptr +1056 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c 5d240a54be7e592 Arnd Bergmann 2020-09-18 1044 static inline int vchiq_get_user_ptr(void __user **buf, void __user *ubuf, int index) 5d240a54be7e592 Arnd Bergmann 2020-09-18 1045 { 5d240a54be7e592 Arnd Bergmann 2020-09-18 1046 int ret; 5d240a54be7e592 Arnd Bergmann 2020-09-18 1047 5d240a54be7e592 Arnd Bergmann 2020-09-18 1048 if (in_compat_syscall()) { 4184da4f316a549 Arnd Bergmann 2020-09-25 1049 compat_uptr_t ptr32; 5d240a54be7e592 Arnd Bergmann 2020-09-18 1050 compat_uptr_t __user *uptr = ubuf; 4184da4f316a549 Arnd Bergmann 2020-09-25 1051 ret = get_user(ptr32, uptr + index); 5d240a54be7e592 Arnd Bergmann 2020-09-18 1052 *buf = compat_ptr(ptr32); 5d240a54be7e592 Arnd Bergmann 2020-09-18 1053 } else { 4184da4f316a549 Arnd Bergmann 2020-09-25 1054 uintptr_t ptr, __user *uptr = ubuf; 4184da4f316a549 Arnd Bergmann 2020-09-25 1055 ret = get_user(ptr, uptr + index); 4184da4f316a549 Arnd Bergmann 2020-09-25 @1056 *buf = (void __user *)ptr; If get_user() fails then this is uninitialized. This will trigger a runtime error if the UBSan uninitialized behavior tool is enabled. 5d240a54be7e592 Arnd Bergmann 2020-09-18 1057 } 4184da4f316a549 Arnd Bergmann 2020-09-25 1058 5d240a54be7e592 Arnd Bergmann 2020-09-18 1059 return ret; 5d240a54be7e592 Arnd Bergmann 2020-09-18 1060 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
