[kbuild-all] drivers/md/dm-log-writes.c:452:12: warning: stack frame size of 1184 bytes in function 'log_writes_kthread'

Hi Christoph, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ac91e6c6033ebc12c5c1e4aa171b81a662bd70f commit: 309dca309fc39a9e3c31b916393b74bd174fd74e block: store a block_device pointer in struct bio date: 4 months ago config: powerpc64-randconfig-r011-20210518 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0a34ff8bcb1df16fe7d643ccbe4567b2162c5024) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 309dca309fc39a9e3c31b916393b74bd174fd74e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc64 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 >>): static int log_writes_kthread(void *arg) ^ 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for NETDEVICES Depends on NET Selected by - AKEBONO && PPC_47x WARNING: unmet direct dependencies detected for ETHERNET Depends on NETDEVICES && NET Selected by - AKEBONO && PPC_47x WARNING: unmet direct dependencies detected for MMC_SDHCI Depends on MMC && HAS_DMA Selected by - AKEBONO && PPC_47x WARNING: unmet direct dependencies detected for MMC_SDHCI_PLTFM Depends on MMC && MMC_SDHCI Selected by - AKEBONO && PPC_47x vim +/log_writes_kthread +452 drivers/md/dm-log-writes.c 0e9cebe724597a Josef Bacik 2015-03-20 451 0e9cebe724597a Josef Bacik 2015-03-20 @452 static int log_writes_kthread(void *arg) 0e9cebe724597a Josef Bacik 2015-03-20 453 { 0e9cebe724597a Josef Bacik 2015-03-20 454 struct log_writes_c *lc = (struct log_writes_c *)arg; 0e9cebe724597a Josef Bacik 2015-03-20 455 sector_t sector = 0; 0e9cebe724597a Josef Bacik 2015-03-20 456 0e9cebe724597a Josef Bacik 2015-03-20 457 while (!kthread_should_stop()) { 0e9cebe724597a Josef Bacik 2015-03-20 458 bool super = false; 0e9cebe724597a Josef Bacik 2015-03-20 459 bool logging_enabled; 0e9cebe724597a Josef Bacik 2015-03-20 460 struct pending_block *block = NULL; 0e9cebe724597a Josef Bacik 2015-03-20 461 int ret; 0e9cebe724597a Josef Bacik 2015-03-20 462 0e9cebe724597a Josef Bacik 2015-03-20 463 spin_lock_irq(&lc->blocks_lock); 0e9cebe724597a Josef Bacik 2015-03-20 464 if (!list_empty(&lc->logging_blocks)) { 0e9cebe724597a Josef Bacik 2015-03-20 465 block = list_first_entry(&lc->logging_blocks, 0e9cebe724597a Josef Bacik 2015-03-20 466 struct pending_block, list); 0e9cebe724597a Josef Bacik 2015-03-20 467 list_del_init(&block->list); 0e9cebe724597a Josef Bacik 2015-03-20 468 if (!lc->logging_enabled) 0e9cebe724597a Josef Bacik 2015-03-20 469 goto next; 0e9cebe724597a Josef Bacik 2015-03-20 470 0e9cebe724597a Josef Bacik 2015-03-20 471 sector = lc->next_sector; 228bb5b26038a7 Josef Bacik 2017-07-28 472 if (!(block->flags & LOG_DISCARD_FLAG)) 228bb5b26038a7 Josef Bacik 2017-07-28 473 lc->next_sector += dev_to_bio_sectors(lc, block->nr_sectors); 228bb5b26038a7 Josef Bacik 2017-07-28 474 lc->next_sector += dev_to_bio_sectors(lc, 1); 0e9cebe724597a Josef Bacik 2015-03-20 475 0e9cebe724597a Josef Bacik 2015-03-20 476 /* 0e9cebe724597a Josef Bacik 2015-03-20 477 * Apparently the size of the device may not be known 0e9cebe724597a Josef Bacik 2015-03-20 478 * right away, so handle this properly. 0e9cebe724597a Josef Bacik 2015-03-20 479 */ 0e9cebe724597a Josef Bacik 2015-03-20 480 if (!lc->end_sector) 0e9cebe724597a Josef Bacik 2015-03-20 481 lc->end_sector = logdev_last_sector(lc); 0e9cebe724597a Josef Bacik 2015-03-20 482 if (lc->end_sector && 0e9cebe724597a Josef Bacik 2015-03-20 483 lc->next_sector >= lc->end_sector) { 0e9cebe724597a Josef Bacik 2015-03-20 484 DMERR("Ran out of space on the logdev"); 0e9cebe724597a Josef Bacik 2015-03-20 485 lc->logging_enabled = false; 0e9cebe724597a Josef Bacik 2015-03-20 486 goto next; 0e9cebe724597a Josef Bacik 2015-03-20 487 } 0e9cebe724597a Josef Bacik 2015-03-20 488 lc->logged_entries++; 0e9cebe724597a Josef Bacik 2015-03-20 489 atomic_inc(&lc->io_blocks); 0e9cebe724597a Josef Bacik 2015-03-20 490 0e9cebe724597a Josef Bacik 2015-03-20 491 super = (block->flags & (LOG_FUA_FLAG | LOG_MARK_FLAG)); 0e9cebe724597a Josef Bacik 2015-03-20 492 if (super) 0e9cebe724597a Josef Bacik 2015-03-20 493 atomic_inc(&lc->io_blocks); 0e9cebe724597a Josef Bacik 2015-03-20 494 } 0e9cebe724597a Josef Bacik 2015-03-20 495 next: 0e9cebe724597a Josef Bacik 2015-03-20 496 logging_enabled = lc->logging_enabled; 0e9cebe724597a Josef Bacik 2015-03-20 497 spin_unlock_irq(&lc->blocks_lock); 0e9cebe724597a Josef Bacik 2015-03-20 498 if (block) { 0e9cebe724597a Josef Bacik 2015-03-20 499 if (logging_enabled) { 0e9cebe724597a Josef Bacik 2015-03-20 500 ret = log_one_block(lc, block, sector); 0e9cebe724597a Josef Bacik 2015-03-20 501 if (!ret && super) 0e9cebe724597a Josef Bacik 2015-03-20 502 ret = log_super(lc); 0e9cebe724597a Josef Bacik 2015-03-20 503 if (ret) { 0e9cebe724597a Josef Bacik 2015-03-20 504 spin_lock_irq(&lc->blocks_lock); 0e9cebe724597a Josef Bacik 2015-03-20 505 lc->logging_enabled = false; 0e9cebe724597a Josef Bacik 2015-03-20 506 spin_unlock_irq(&lc->blocks_lock); 0e9cebe724597a Josef Bacik 2015-03-20 507 } 0e9cebe724597a Josef Bacik 2015-03-20 508 } else 0e9cebe724597a Josef Bacik 2015-03-20 509 free_pending_block(lc, block); 0e9cebe724597a Josef Bacik 2015-03-20 510 continue; 0e9cebe724597a Josef Bacik 2015-03-20 511 } 0e9cebe724597a Josef Bacik 2015-03-20 512 0e9cebe724597a Josef Bacik 2015-03-20 513 if (!try_to_freeze()) { 0e9cebe724597a Josef Bacik 2015-03-20 514 set_current_state(TASK_INTERRUPTIBLE); 0e9cebe724597a Josef Bacik 2015-03-20 515 if (!kthread_should_stop() && 0c79c62021d23f Josef Bacik 2017-07-28 516 list_empty(&lc->logging_blocks)) 0e9cebe724597a Josef Bacik 2015-03-20 517 schedule(); 0e9cebe724597a Josef Bacik 2015-03-20 518 __set_current_state(TASK_RUNNING); 0e9cebe724597a Josef Bacik 2015-03-20 519 } 0e9cebe724597a Josef Bacik 2015-03-20 520 } 0e9cebe724597a Josef Bacik 2015-03-20 521 return 0; 0e9cebe724597a Josef Bacik 2015-03-20 522 } 0e9cebe724597a Josef Bacik 2015-03-20 523 :::::: The code at line 452 was first introduced by commit :::::: 0e9cebe724597a76ab1b0ebc0a21e16f7db11b47 dm: add log writes target :::::: TO: Josef Bacik <jbacik(a)fb.com&gt; :::::: CC: Mike Snitzer <snitzer(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org