tree: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-5.9/firmware head: 4e87189912bd2167998d82c95bb68f73185069e2 commit: 5e37b9c137ee5a3a9dc2815ca51f71746c2609a6 [4/5] firmware: tegra: Add support for in-band debug config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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 checkout 5e37b9c137ee5a3a9dc2815ca51f71746c2609a6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/firmware/tegra/bpmp-debugfs.c: In function 'bpmp_populate_debugfs_inband': 422 | strncat(pathbuf, name, strlen(name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncat +422 drivers/firmware/tegra/bpmp-debugfs.c 364 365 static int bpmp_populate_debugfs_inband(struct tegra_bpmp *bpmp, 366 struct dentry *parent, 367 char *ppath) 368 { 369 const size_t pathlen = SZ_256; 370 const size_t bufsize = SZ_16K; 371 uint32_t dsize, attrs = 0; 372 struct dentry *dentry; 373 struct seqbuf seqbuf; 374 char *buf, *pathbuf; 375 const char *name; 376 int err = 0; 377 378 if (!bpmp || !parent || !ppath) 379 return -EINVAL; 380 381 buf = kmalloc(bufsize, GFP_KERNEL); 382 if (!buf) 383 return -ENOMEM; 384 385 pathbuf = kzalloc(pathlen, GFP_KERNEL); 386 if (!pathbuf) { 387 kfree(buf); 388 return -ENOMEM; 389 } 390 391 err = mrq_debug_read(bpmp, ppath, buf, bufsize, &dsize); 392 if (err) 393 goto out; 394 395 seqbuf_init(&seqbuf, buf, dsize); 396 397 while (!seqbuf_eof(&seqbuf)) { 398 err = seqbuf_read_u32(&seqbuf, &attrs); 399 if (err) 400 goto out; 401 402 err = seqbuf_read_str(&seqbuf, &name); 403 if (err < 0) 404 goto out; 405 406 if (attrs & DEBUGFS_S_ISDIR) { 407 size_t len; 408 409 dentry = debugfs_create_dir(name, parent); 410 if (IS_ERR(dentry)) { 411 err = PTR_ERR(dentry); 412 goto out; 413 } 414 415 len = strlen(ppath) + strlen(name) + 1; 416 if (len >= pathlen) { 417 err = -EINVAL; 418 goto out; 419 } 420 421 strncpy(pathbuf, ppath, pathlen); 423 strcat(pathbuf, "/"); 424 425 err = bpmp_populate_debugfs_inband(bpmp, dentry, 426 pathbuf); 427 if (err < 0) 428 goto out; 429 } else { 430 umode_t mode; 431 432 mode = attrs & DEBUGFS_S_IRUSR ? 0400 : 0; 433 mode |= attrs & DEBUGFS_S_IWUSR ? 0200 : 0; 434 dentry = debugfs_create_file(name, mode, parent, bpmp, 435 &bpmp_debug_fops); 436 if (!dentry) { 437 err = -ENOMEM; 438 goto out; 439 } 440 } 441 } 442 443 out: 444 kfree(pathbuf); 445 kfree(buf); 446 447 return err; 448 } 449 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org