tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 86cfccb66937dd6cbf26ed619958b9e587e6a115 commit: 5e37b9c137ee5a3a9dc2815ca51f71746c2609a6 firmware: tegra: Add support for in-band debug date: 3 weeks ago config: arm64-randconfig-c003-20200807 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; coccinelle warnings: (new ones prefixed by >>) vim +335 drivers/firmware/tegra/bpmp-debugfs.c 320 321 static ssize_t bpmp_debug_store(struct file *file, const char __user *buf, 322 size_t count, loff_t *f_pos) 323 { 324 struct inode *inode = file_inode(file); 325 struct tegra_bpmp *bpmp = inode->i_private; 326 char *databuf = NULL; 327 char fnamebuf[256]; 328 const char *filename; 329 ssize_t err; 330 331 filename = get_filename(bpmp, file, fnamebuf, sizeof(fnamebuf)); 332 if (!filename) 333 return -ENOENT; 334 336 if (!databuf) 337 return -ENOMEM; 338 339 if (copy_from_user(databuf, buf, count)) { 340 err = -EFAULT; 341 goto free_ret; 342 } 343 344 err = mrq_debug_write(bpmp, filename, databuf, count); 345 346 free_ret: 347 kfree(databuf); 348 349 return err ?: count; 350 } 351 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org