Messages in this thread | | | Date | Fri, 12 Nov 2021 10:33:24 +0800 | From | kernel test robot <> | Subject | [ti:ti-rt-linux-5.10.y 10189/10194] drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c:1339:25: warning: 'strncpy' specified bound 32 equals destination size |
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Hi Sidraya,
First bad commit (maybe != root cause):
tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y head: aafb1bd67f22b44cf5f8072266002696adaa21b0 commit: caf6d714b87dee7429cb6b9cf60a3cba0061bfd6 [10189/10194] media: platform: Kconfig: Add Video decoder Kconfig and Makefile config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git git fetch --no-tags ti ti-rt-linux-5.10.y git checkout caf6d714b87dee7429cb6b9cf60a3cba0061bfd6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c: In function 'vxe_query_ext_ctrl': >> drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c:1339:25: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] 1339 | strncpy(query->name, controls[i].name, sizeof(query->name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c:1316:33: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] 1316 | strncpy(query->name, controls[i].name, sizeof(query->name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c: In function 'vxe_queryctrl': drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c:1281:25: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] 1281 | strncpy(query->name, controls[i].name, sizeof(query->name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c:1264:33: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] 1264 | strncpy(query->name, controls[i].name, sizeof(query->name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/strncpy +1339 drivers/media/platform/vxe-vxd/encoder/vxe_v4l2.c
146db0290a0031 Sidraya 2021-11-02 1293 146db0290a0031 Sidraya 2021-11-02 1294 static int vxe_query_ext_ctrl(struct file *file, void *priv, 146db0290a0031 Sidraya 2021-11-02 1295 struct v4l2_query_ext_ctrl *query) 146db0290a0031 Sidraya 2021-11-02 1296 { 146db0290a0031 Sidraya 2021-11-02 1297 unsigned int queryid; 146db0290a0031 Sidraya 2021-11-02 1298 int i, j; 146db0290a0031 Sidraya 2021-11-02 1299 146db0290a0031 Sidraya 2021-11-02 1300 query->reserved[0] = 0; 146db0290a0031 Sidraya 2021-11-02 1301 query->reserved[1] = 0; 146db0290a0031 Sidraya 2021-11-02 1302 146db0290a0031 Sidraya 2021-11-02 1303 /* Enumerate controls */ 146db0290a0031 Sidraya 2021-11-02 1304 if ((query->id & V4L2_CTRL_FLAG_NEXT_CTRL) || 146db0290a0031 Sidraya 2021-11-02 1305 (query->id & V4L2_CTRL_FLAG_NEXT_COMPOUND)) { 146db0290a0031 Sidraya 2021-11-02 1306 queryid = query->id; 146db0290a0031 Sidraya 2021-11-02 1307 queryid &= ~V4L2_CTRL_FLAG_NEXT_CTRL; 146db0290a0031 Sidraya 2021-11-02 1308 queryid &= ~V4L2_CTRL_FLAG_NEXT_COMPOUND; 146db0290a0031 Sidraya 2021-11-02 1309 for (i = 0; i < ARRAY_SIZE(controls); i++) { 146db0290a0031 Sidraya 2021-11-02 1310 if (((!controls[i].compound && (query->id & V4L2_CTRL_FLAG_NEXT_CTRL)) || 146db0290a0031 Sidraya 2021-11-02 1311 (controls[i].compound && 146db0290a0031 Sidraya 2021-11-02 1312 (query->id & V4L2_CTRL_FLAG_NEXT_COMPOUND))) && 146db0290a0031 Sidraya 2021-11-02 1313 controls[i].cid > queryid) { 146db0290a0031 Sidraya 2021-11-02 1314 query->id = controls[i].cid; 146db0290a0031 Sidraya 2021-11-02 1315 query->type = controls[i].type; 146db0290a0031 Sidraya 2021-11-02 1316 strncpy(query->name, controls[i].name, sizeof(query->name)); 146db0290a0031 Sidraya 2021-11-02 1317 query->minimum = controls[i].minimum; 146db0290a0031 Sidraya 2021-11-02 1318 query->maximum = controls[i].maximum; 146db0290a0031 Sidraya 2021-11-02 1319 query->step = controls[i].step; 146db0290a0031 Sidraya 2021-11-02 1320 query->default_value = controls[i].default_value; 146db0290a0031 Sidraya 2021-11-02 1321 /* Our supported controls use int values */ 146db0290a0031 Sidraya 2021-11-02 1322 query->elem_size = 4; 146db0290a0031 Sidraya 2021-11-02 1323 query->elems = 1; 146db0290a0031 Sidraya 2021-11-02 1324 query->nr_of_dims = 0; 146db0290a0031 Sidraya 2021-11-02 1325 for (j = 0; j < V4L2_CTRL_MAX_DIMS; j++) 146db0290a0031 Sidraya 2021-11-02 1326 query->dims[j] = 0; 146db0290a0031 Sidraya 2021-11-02 1327 query->flags = 0; 146db0290a0031 Sidraya 2021-11-02 1328 return 0; 146db0290a0031 Sidraya 2021-11-02 1329 } 146db0290a0031 Sidraya 2021-11-02 1330 } 146db0290a0031 Sidraya 2021-11-02 1331 return -EINVAL; 146db0290a0031 Sidraya 2021-11-02 1332 } 146db0290a0031 Sidraya 2021-11-02 1333 146db0290a0031 Sidraya 2021-11-02 1334 /* Return info on requested control */ 146db0290a0031 Sidraya 2021-11-02 1335 for (i = 0; i < ARRAY_SIZE(controls); i++) { 146db0290a0031 Sidraya 2021-11-02 1336 if (controls[i].cid == query->id) { 146db0290a0031 Sidraya 2021-11-02 1337 query->id = controls[i].cid; 146db0290a0031 Sidraya 2021-11-02 1338 query->type = controls[i].type; 146db0290a0031 Sidraya 2021-11-02 @1339 strncpy(query->name, controls[i].name, sizeof(query->name)); 146db0290a0031 Sidraya 2021-11-02 1340 query->minimum = controls[i].minimum; 146db0290a0031 Sidraya 2021-11-02 1341 query->maximum = controls[i].maximum; 146db0290a0031 Sidraya 2021-11-02 1342 query->step = controls[i].step; 146db0290a0031 Sidraya 2021-11-02 1343 query->default_value = controls[i].default_value; 146db0290a0031 Sidraya 2021-11-02 1344 /* Our supported controls use int values */ 146db0290a0031 Sidraya 2021-11-02 1345 query->elem_size = 4; 146db0290a0031 Sidraya 2021-11-02 1346 query->elems = 1; 146db0290a0031 Sidraya 2021-11-02 1347 query->nr_of_dims = 0; 146db0290a0031 Sidraya 2021-11-02 1348 for (j = 0; j < V4L2_CTRL_MAX_DIMS; j++) 146db0290a0031 Sidraya 2021-11-02 1349 query->dims[j] = 0; 146db0290a0031 Sidraya 2021-11-02 1350 query->flags = 0; 146db0290a0031 Sidraya 2021-11-02 1351 return 0; 146db0290a0031 Sidraya 2021-11-02 1352 } 146db0290a0031 Sidraya 2021-11-02 1353 } 146db0290a0031 Sidraya 2021-11-02 1354 146db0290a0031 Sidraya 2021-11-02 1355 return -EINVAL; 146db0290a0031 Sidraya 2021-11-02 1356 } 146db0290a0031 Sidraya 2021-11-02 1357
:::::: The code at line 1339 was first introduced by commit :::::: 146db0290a0031e16b682f63d665bfaa8ebaf24a v4l: vxe-enc: Add IMG Encoder v4l2 Driver Interface function implementations
:::::: TO: Sidraya <sidraya.bj@pathpartnertech.com> :::::: CC: Praneeth Bajjuri <praneeth@ti.com>
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