tree: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git linux-4.14.y head: 98bd8ad7f8c21c53736fbb0589447186459e9ec9 commit: ea4899e2410d1394cc4857298ecf8cc511d5afd4 [1255/1405] fs: Enable bmap() function to properly return errors config: i386-randconfig-a003-20211115 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git/c... git remote add jaegeuk-f2fs-stable https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git git fetch --no-tags jaegeuk-f2fs-stable linux-4.14.y git checkout ea4899e2410d1394cc4857298ecf8cc511d5afd4 # save the attached .config to linux build tree make W=1 ARCH=i386 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/md/bitmap.c: In function 'read_page': bh->b_blocknr = bmap(inode, block); ^~~~~ In file included from include/linux/genhd.h:68:0, from include/linux/blkdev.h:11, from drivers/md/bitmap.c:18: include/linux/fs.h:2729:12: note: expected 'sector_t * {aka long long unsigned int *}' but argument is of type 'sector_t {aka long long unsigned int}' extern int bmap(struct inode *inode, sector_t *block); ^~~~ arch/x86/include/asm/bitops.h: Assembler messages: arch/x86/include/asm/bitops.h:225: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' arch/x86/include/asm/bitops.h:271: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr' vim +/bmap +382 drivers/md/bitmap.c 32a7627cf3a353 NeilBrown 2005-06-21 350 d785a06a0b9d0c NeilBrown 2006-06-26 351 /* read a page from a file. d785a06a0b9d0c NeilBrown 2006-06-26 352 * We both read the page, and attach buffers to the page to record the d785a06a0b9d0c NeilBrown 2006-06-26 353 * address of each block (using bmap). These addresses will be used d785a06a0b9d0c NeilBrown 2006-06-26 354 * to write the block later, completely bypassing the filesystem. d785a06a0b9d0c NeilBrown 2006-06-26 355 * This usage is similar to how swap files are handled, and allows us d785a06a0b9d0c NeilBrown 2006-06-26 356 * to write to a file with no concerns of memory allocation failing. d785a06a0b9d0c NeilBrown 2006-06-26 357 */ 27581e5ae01f77 NeilBrown 2012-05-22 358 static int read_page(struct file *file, unsigned long index, d785a06a0b9d0c NeilBrown 2006-06-26 359 struct bitmap *bitmap, 27581e5ae01f77 NeilBrown 2012-05-22 360 unsigned long count, 27581e5ae01f77 NeilBrown 2012-05-22 361 struct page *page) 32a7627cf3a353 NeilBrown 2005-06-21 362 { 27581e5ae01f77 NeilBrown 2012-05-22 363 int ret = 0; 496ad9aa8ef448 Al Viro 2013-01-23 364 struct inode *inode = file_inode(file); d785a06a0b9d0c NeilBrown 2006-06-26 365 struct buffer_head *bh; d785a06a0b9d0c NeilBrown 2006-06-26 366 sector_t block; 32a7627cf3a353 NeilBrown 2005-06-21 367 36a4e1fe0f4541 NeilBrown 2011-10-07 368 pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE, 2d1f3b5d1b2cd1 NeilBrown 2006-01-06 369 (unsigned long long)index << PAGE_SHIFT); 32a7627cf3a353 NeilBrown 2005-06-21 370 d785a06a0b9d0c NeilBrown 2006-06-26 371 bh = alloc_page_buffers(page, 1<<inode->i_blkbits, 0); d785a06a0b9d0c NeilBrown 2006-06-26 372 if (!bh) { 27581e5ae01f77 NeilBrown 2012-05-22 373 ret = -ENOMEM; d785a06a0b9d0c NeilBrown 2006-06-26 374 goto out; d785a06a0b9d0c NeilBrown 2006-06-26 375 } d785a06a0b9d0c NeilBrown 2006-06-26 376 attach_page_buffers(page, bh); d785a06a0b9d0c NeilBrown 2006-06-26 377 block = index << (PAGE_SHIFT - inode->i_blkbits); d785a06a0b9d0c NeilBrown 2006-06-26 378 while (bh) { d785a06a0b9d0c NeilBrown 2006-06-26 379 if (count == 0) d785a06a0b9d0c NeilBrown 2006-06-26 380 bh->b_blocknr = 0; d785a06a0b9d0c NeilBrown 2006-06-26 381 else { d785a06a0b9d0c NeilBrown 2006-06-26 @382 bh->b_blocknr = bmap(inode, block); d785a06a0b9d0c NeilBrown 2006-06-26 383 if (bh->b_blocknr == 0) { d785a06a0b9d0c NeilBrown 2006-06-26 384 /* Cannot use this file! */ 27581e5ae01f77 NeilBrown 2012-05-22 385 ret = -EINVAL; d785a06a0b9d0c NeilBrown 2006-06-26 386 goto out; d785a06a0b9d0c NeilBrown 2006-06-26 387 } d785a06a0b9d0c NeilBrown 2006-06-26 388 bh->b_bdev = inode->i_sb->s_bdev; d785a06a0b9d0c NeilBrown 2006-06-26 389 if (count < (1<<inode->i_blkbits)) d785a06a0b9d0c NeilBrown 2006-06-26 390 count = 0; 32a7627cf3a353 NeilBrown 2005-06-21 391 else d785a06a0b9d0c NeilBrown 2006-06-26 392 count -= (1<<inode->i_blkbits); d785a06a0b9d0c NeilBrown 2006-06-26 393 d785a06a0b9d0c NeilBrown 2006-06-26 394 bh->b_end_io = end_bitmap_write; d785a06a0b9d0c NeilBrown 2006-06-26 395 bh->b_private = bitmap; ce25c31bdd3b39 NeilBrown 2006-06-26 396 atomic_inc(&bitmap->pending_writes); ce25c31bdd3b39 NeilBrown 2006-06-26 397 set_buffer_locked(bh); ce25c31bdd3b39 NeilBrown 2006-06-26 398 set_buffer_mapped(bh); 2a222ca992c35a Mike Christie 2016-06-05 399 submit_bh(REQ_OP_READ, 0, bh); d785a06a0b9d0c NeilBrown 2006-06-26 400 } d785a06a0b9d0c NeilBrown 2006-06-26 401 block++; d785a06a0b9d0c NeilBrown 2006-06-26 402 bh = bh->b_this_page; d785a06a0b9d0c NeilBrown 2006-06-26 403 } d785a06a0b9d0c NeilBrown 2006-06-26 404 page->index = index; ce25c31bdd3b39 NeilBrown 2006-06-26 405 ce25c31bdd3b39 NeilBrown 2006-06-26 406 wait_event(bitmap->write_wait, ce25c31bdd3b39 NeilBrown 2006-06-26 407 atomic_read(&bitmap->pending_writes)==0); b405fe91e50c60 NeilBrown 2012-05-22 408 if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) 27581e5ae01f77 NeilBrown 2012-05-22 409 ret = -EIO; 32a7627cf3a353 NeilBrown 2005-06-21 410 out: 27581e5ae01f77 NeilBrown 2012-05-22 411 if (ret) ec0cc226854a79 NeilBrown 2016-11-02 412 pr_err("md: bitmap read error: (%dB @ %llu): %d\n", 2d1f3b5d1b2cd1 NeilBrown 2006-01-06 413 (int)PAGE_SIZE, 2d1f3b5d1b2cd1 NeilBrown 2006-01-06 414 (unsigned long long)index << PAGE_SHIFT, 27581e5ae01f77 NeilBrown 2012-05-22 415 ret); 27581e5ae01f77 NeilBrown 2012-05-22 416 return ret; 32a7627cf3a353 NeilBrown 2005-06-21 417 } 32a7627cf3a353 NeilBrown 2005-06-21 418 :::::: The code at line 382 was first introduced by commit :::::: d785a06a0b9d0cd86b3cc1bf8e236e62af7b47ed [PATCH] md/bitmap: change md/bitmap file handling to use bmap to file blocks :::::: TO: NeilBrown <neilb(a)suse.de&gt; :::::: CC: Linus Torvalds <torvalds(a)g5.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org