tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f40ddce88593482919761f74910f42f4b84c004b commit: 421015713b306e47af95d4d61cdfbd96d462e4cb ARM: 9017/2: Enable KASan for ARM date: 4 months ago config: arm-randconfig-s032-20210218 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # 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 421015713b306e47af95d4d61cdfbd96d462e4cb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: expected void const *src drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: got void [noderef] __iomem * drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const *src @@ got void [noderef] __iomem * @@ drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: expected void const *src drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: got void [noderef] __iomem * drivers/mtd/nand/onenand/onenand_omap2.c:444:9: sparse: expected void *dest drivers/mtd/nand/onenand/onenand_omap2.c:444:9: sparse: got void [noderef] __iomem * vim +385 drivers/mtd/nand/onenand/onenand_omap2.c 3621311695f5b1 drivers/mtd/onenand/omap2.c Peter Ujfalusi 2018-01-12 359 fb25070afdf07c drivers/mtd/onenand/omap2.c Ladislav Michl 2018-01-12 360 static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area, 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 361 unsigned char *buffer, int offset, 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 362 size_t count) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 363 { 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 364 struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 365 struct onenand_chip *this = mtd->priv; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 366 struct device *dev = &c->pdev->dev; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 367 void *buf = (void *)buffer; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 368 dma_addr_t dma_src, dma_dst; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 369 int bram_offset, err; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 370 size_t xtra; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 371 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 372 bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 373 /* 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 374 * If the buffer address is not DMA-able, len is not long enough to make 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 375 * DMA transfers profitable or panic_write() may be in an interrupt 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 376 * context fallback to PIO mode. 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 377 */ 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 378 if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 || 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 379 count < 384 || in_interrupt() || oops_in_progress) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 380 goto out_copy; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 381 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 382 xtra = count & 3; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 383 if (xtra) { 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 384 count -= xtra; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 @385 memcpy(buf + count, this->base + bram_offset + count, xtra); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 386 } 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 387 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 388 dma_dst = dma_map_single(dev, buf, count, DMA_FROM_DEVICE); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 389 dma_src = c->phys_base + bram_offset; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 390 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 391 if (dma_mapping_error(dev, dma_dst)) { 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 392 dev_err(dev, "Couldn't DMA map a %d byte buffer\n", count); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 393 goto out_copy; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 394 } 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 395 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 396 err = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 397 dma_unmap_single(dev, dma_dst, count, DMA_FROM_DEVICE); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 398 if (!err) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 399 return 0; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 400 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 401 dev_err(dev, "timeout waiting for DMA\n"); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 402 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 403 out_copy: 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 404 memcpy(buf, this->base + bram_offset, count); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 405 return 0; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 406 } 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 407 fb25070afdf07c drivers/mtd/onenand/omap2.c Ladislav Michl 2018-01-12 408 static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area, 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 409 const unsigned char *buffer, 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 410 int offset, size_t count) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 411 { 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 412 struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 413 struct onenand_chip *this = mtd->priv; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 414 struct device *dev = &c->pdev->dev; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 415 void *buf = (void *)buffer; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 416 dma_addr_t dma_src, dma_dst; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 417 int bram_offset, err; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 418 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 419 bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 420 /* 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 421 * If the buffer address is not DMA-able, len is not long enough to make 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 422 * DMA transfers profitable or panic_write() may be in an interrupt 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 423 * context fallback to PIO mode. 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 424 */ 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 425 if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 || 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 426 count < 384 || in_interrupt() || oops_in_progress) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 427 goto out_copy; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 428 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 429 dma_src = dma_map_single(dev, buf, count, DMA_TO_DEVICE); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 430 dma_dst = c->phys_base + bram_offset; 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 431 if (dma_mapping_error(dev, dma_src)) { 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 432 dev_err(dev, "Couldn't DMA map a %d byte buffer\n", count); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 433 goto out_copy; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 434 } 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 435 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 436 err = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 437 dma_unmap_page(dev, dma_src, count, DMA_TO_DEVICE); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 438 if (!err) 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 439 return 0; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 440 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 441 dev_err(dev, "timeout waiting for DMA\n"); 6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 442 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 443 out_copy: 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 @444 memcpy(this->base + bram_offset, buf, count); 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 445 return 0; 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 446 } 36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 447 :::::: The code at line 385 was first introduced by commit :::::: 36cd4fb5d277f34fe9e4db0deac2d4efd7dff735 [MTD] [OneNAND] Add OMAP2 / OMAP3 OneNAND driver :::::: TO: Adrian Hunter <ext-adrian.hunter(a)nokia.com&gt; :::::: CC: David Woodhouse <David.Woodhouse(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org