CC: [email protected] BCC: [email protected] CC: [email protected] TO: SeongJae Park <[email protected]> CC: Andrew Morton <[email protected]> CC: Linux Memory Management List <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 787af64d05cd528aac9ad16752d11bb1c6061bb9 commit: 90bebce9fcd6488ba6b010af3a16a0a0d7e44cb6 mm/damon/dbgfs: allow users to set initial monitoring target regions date: 5 months ago :::::: branch date: 15 hours ago :::::: commit date: 5 months ago config: arc-randconfig-m031-20220331 (https://download.01.org/0day-ci/archive/20220331/[email protected]/config) compiler: arceb-elf-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: mm/damon/dbgfs.c:525 dbgfs_init_regions_write() warn: passing a valid pointer to 'PTR_ERR' vim +/PTR_ERR +525 mm/damon/dbgfs.c 90bebce9fcd648 SeongJae Park 2021-11-05 513 90bebce9fcd648 SeongJae Park 2021-11-05 514 static ssize_t dbgfs_init_regions_write(struct file *file, 90bebce9fcd648 SeongJae Park 2021-11-05 515 const char __user *buf, size_t count, 90bebce9fcd648 SeongJae Park 2021-11-05 516 loff_t *ppos) 90bebce9fcd648 SeongJae Park 2021-11-05 517 { 90bebce9fcd648 SeongJae Park 2021-11-05 518 struct damon_ctx *ctx = file->private_data; 90bebce9fcd648 SeongJae Park 2021-11-05 519 char *kbuf; 90bebce9fcd648 SeongJae Park 2021-11-05 520 ssize_t ret = count; 90bebce9fcd648 SeongJae Park 2021-11-05 521 int err; 90bebce9fcd648 SeongJae Park 2021-11-05 522 90bebce9fcd648 SeongJae Park 2021-11-05 523 kbuf = user_input_str(buf, count, ppos); 90bebce9fcd648 SeongJae Park 2021-11-05 524 if (IS_ERR(kbuf)) 90bebce9fcd648 SeongJae Park 2021-11-05 @525 return PTR_ERR(kbuf); 90bebce9fcd648 SeongJae Park 2021-11-05 526 90bebce9fcd648 SeongJae Park 2021-11-05 527 mutex_lock(&ctx->kdamond_lock); 90bebce9fcd648 SeongJae Park 2021-11-05 528 if (ctx->kdamond) { 90bebce9fcd648 SeongJae Park 2021-11-05 529 ret = -EBUSY; 90bebce9fcd648 SeongJae Park 2021-11-05 530 goto unlock_out; 90bebce9fcd648 SeongJae Park 2021-11-05 531 } 90bebce9fcd648 SeongJae Park 2021-11-05 532 90bebce9fcd648 SeongJae Park 2021-11-05 533 err = set_init_regions(ctx, kbuf, ret); 90bebce9fcd648 SeongJae Park 2021-11-05 534 if (err) 90bebce9fcd648 SeongJae Park 2021-11-05 535 ret = err; 90bebce9fcd648 SeongJae Park 2021-11-05 536 90bebce9fcd648 SeongJae Park 2021-11-05 537 unlock_out: 90bebce9fcd648 SeongJae Park 2021-11-05 538 mutex_unlock(&ctx->kdamond_lock); 90bebce9fcd648 SeongJae Park 2021-11-05 539 kfree(kbuf); 90bebce9fcd648 SeongJae Park 2021-11-05 540 return ret; 90bebce9fcd648 SeongJae Park 2021-11-05 541 } 90bebce9fcd648 SeongJae Park 2021-11-05 542 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
