* Re: [PATCH 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER
[not found] <20230323092156.2545741-3-rppt@kernel.org>
@ 2023-03-23 17:11 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-03-23 17:11 UTC (permalink / raw)
To: Mike Rapoport, Andrew Morton
Cc: llvm, oe-kbuild-all, Linux Memory Management List, Arnd Bergmann,
Catalin Marinas, Christophe Leroy, Dinh Nguyen,
Geert Uytterhoeven, Guo Ren, John Paul Adrian Glaubitz,
Kirill A. Shutemov, Max Filippov, Michael Ellerman, Mike Rapoport,
Rich Felker, Russell King, Will Deacon, Yoshinori Sato, Zi Yan,
linux-arm-kernel, linux-csky, linux-ia64, linux-kernel,
linux-m68k, linux-sh, linux-xtensa, linuxppc-dev, sparclinux
Hi Mike,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on 51551d71edbc998fd8c8afa7312db3d270f5998e]
url: https://github.com/intel-lab-lkp/linux/commits/Mike-Rapoport/arm-reword-ARCH_FORCE_MAX_ORDER-prompt-and-help-text/20230323-172512
base: 51551d71edbc998fd8c8afa7312db3d270f5998e
patch link: https://lore.kernel.org/r/20230323092156.2545741-3-rppt%40kernel.org
patch subject: [PATCH 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER
config: arm64-randconfig-r031-20230322 (https://download.01.org/0day-ci/archive/20230324/202303240155.01y6T6Fj-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/0522f943c071abf1610651ea40405b7489c50987
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Mike-Rapoport/arm-reword-ARCH_FORCE_MAX_ORDER-prompt-and-help-text/20230323-172512
git checkout 0522f943c071abf1610651ea40405b7489c50987
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/iommu/ kernel/dma/ mm/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303240155.01y6T6Fj-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
>> mm/memory.c:5791:37: warning: shift count is negative [-Wshift-count-negative]
if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/compiler.h:48:41: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
^
include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__'
______r = __builtin_expect(!!(x), expect); \
^
>> mm/memory.c:5791:37: warning: shift count is negative [-Wshift-count-negative]
if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/compiler.h:48:68: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
^
include/linux/compiler.h:35:19: note: expanded from macro '__branch_check__'
expect, is_constant); \
^~~~~~~~~~~
mm/memory.c:5843:37: warning: shift count is negative [-Wshift-count-negative]
if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/compiler.h:48:41: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
^
include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__'
______r = __builtin_expect(!!(x), expect); \
^
mm/memory.c:5843:37: warning: shift count is negative [-Wshift-count-negative]
if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/compiler.h:48:68: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
^
include/linux/compiler.h:35:19: note: expanded from macro '__branch_check__'
expect, is_constant); \
^~~~~~~~~~~
4 warnings generated.
--
>> drivers/iommu/dma-iommu.c:739:16: error: anonymous bit-field has negative width (-1)
order_mask &= GENMASK(MAX_ORDER, 0);
^
include/linux/bits.h:37:3: note: expanded from macro 'GENMASK'
(GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
^
include/linux/bits.h:23:3: note: expanded from macro 'GENMASK_INPUT_CHECK'
(BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
^
include/linux/build_bug.h:16:53: note: expanded from macro 'BUILD_BUG_ON_ZERO'
#define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
^
>> drivers/iommu/dma-iommu.c:739:16: warning: shift count >= width of type [-Wshift-count-overflow]
order_mask &= GENMASK(MAX_ORDER, 0);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bits.h:37:31: note: expanded from macro 'GENMASK'
(GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
^~~~~~~~~~~~~~~
include/linux/bits.h:35:11: note: expanded from macro '__GENMASK'
(~UL(0) >> (BITS_PER_LONG - 1 - (h))))
^ ~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 1 error generated.
--
>> kernel/dma/pool.c:197:39: warning: shift count is negative [-Wshift-count-negative]
pages = min_t(unsigned long, pages, MAX_ORDER_NR_PAGES);
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/minmax.h:126:59: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
^
include/linux/minmax.h:37:12: note: expanded from macro '__careful_cmp'
__cmp(x, y, op), \
^
include/linux/minmax.h:28:34: note: expanded from macro '__cmp'
#define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
^
>> kernel/dma/pool.c:197:39: warning: shift count is negative [-Wshift-count-negative]
pages = min_t(unsigned long, pages, MAX_ORDER_NR_PAGES);
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/minmax.h:126:59: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
^
include/linux/minmax.h:37:12: note: expanded from macro '__careful_cmp'
__cmp(x, y, op), \
^
include/linux/minmax.h:28:46: note: expanded from macro '__cmp'
#define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
^
>> kernel/dma/pool.c:197:39: warning: shift count is negative [-Wshift-count-negative]
pages = min_t(unsigned long, pages, MAX_ORDER_NR_PAGES);
^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h:33:31: note: expanded from macro 'MAX_ORDER_NR_PAGES'
#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
^ ~~~~~~~~~
include/linux/minmax.h:126:59: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
^
include/linux/minmax.h:38:17: note: expanded from macro '__careful_cmp'
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
^
include/linux/minmax.h:32:25: note: expanded from macro '__cmp_once'
typeof(y) unique_y = (y); \
^
3 warnings generated.
vim +739 drivers/iommu/dma-iommu.c
0db2e5d18f76a6 Robin Murphy 2015-10-01 732
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 733 static struct page **__iommu_dma_alloc_pages(struct device *dev,
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 734 unsigned int count, unsigned long order_mask, gfp_t gfp)
0db2e5d18f76a6 Robin Murphy 2015-10-01 735 {
0db2e5d18f76a6 Robin Murphy 2015-10-01 736 struct page **pages;
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 737 unsigned int i = 0, nid = dev_to_node(dev);
3b6b7e19e31a81 Robin Murphy 2016-04-13 738
98d56389a5e38b Kirill A. Shutemov 2023-03-15 @739 order_mask &= GENMASK(MAX_ORDER, 0);
3b6b7e19e31a81 Robin Murphy 2016-04-13 740 if (!order_mask)
3b6b7e19e31a81 Robin Murphy 2016-04-13 741 return NULL;
0db2e5d18f76a6 Robin Murphy 2015-10-01 742
ab6f4b001c8c72 Gustavo A. R. Silva 2021-09-28 743 pages = kvcalloc(count, sizeof(*pages), GFP_KERNEL);
0db2e5d18f76a6 Robin Murphy 2015-10-01 744 if (!pages)
0db2e5d18f76a6 Robin Murphy 2015-10-01 745 return NULL;
0db2e5d18f76a6 Robin Murphy 2015-10-01 746
0db2e5d18f76a6 Robin Murphy 2015-10-01 747 /* IOMMU can map any pages, so himem can also be used here */
0db2e5d18f76a6 Robin Murphy 2015-10-01 748 gfp |= __GFP_NOWARN | __GFP_HIGHMEM;
0db2e5d18f76a6 Robin Murphy 2015-10-01 749
0db2e5d18f76a6 Robin Murphy 2015-10-01 750 while (count) {
0db2e5d18f76a6 Robin Murphy 2015-10-01 751 struct page *page = NULL;
3b6b7e19e31a81 Robin Murphy 2016-04-13 752 unsigned int order_size;
0db2e5d18f76a6 Robin Murphy 2015-10-01 753
0db2e5d18f76a6 Robin Murphy 2015-10-01 754 /*
0db2e5d18f76a6 Robin Murphy 2015-10-01 755 * Higher-order allocations are a convenience rather
0db2e5d18f76a6 Robin Murphy 2015-10-01 756 * than a necessity, hence using __GFP_NORETRY until
3b6b7e19e31a81 Robin Murphy 2016-04-13 757 * falling back to minimum-order allocations.
0db2e5d18f76a6 Robin Murphy 2015-10-01 758 */
a706e6e10225fb Kirill A. Shutemov 2023-03-15 759 for (order_mask &= GENMASK(__fls(count), 0);
3b6b7e19e31a81 Robin Murphy 2016-04-13 760 order_mask; order_mask &= ~order_size) {
3b6b7e19e31a81 Robin Murphy 2016-04-13 761 unsigned int order = __fls(order_mask);
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 762 gfp_t alloc_flags = gfp;
3b6b7e19e31a81 Robin Murphy 2016-04-13 763
3b6b7e19e31a81 Robin Murphy 2016-04-13 764 order_size = 1U << order;
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 765 if (order_mask > order_size)
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 766 alloc_flags |= __GFP_NORETRY;
c4b17afb0a4e8d Ganapatrao Kulkarni 2018-11-30 767 page = alloc_pages_node(nid, alloc_flags, order);
0db2e5d18f76a6 Robin Murphy 2015-10-01 768 if (!page)
0db2e5d18f76a6 Robin Murphy 2015-10-01 769 continue;
4604393ca0c6e4 Robin Murphy 2020-09-03 770 if (order)
0db2e5d18f76a6 Robin Murphy 2015-10-01 771 split_page(page, order);
0db2e5d18f76a6 Robin Murphy 2015-10-01 772 break;
0db2e5d18f76a6 Robin Murphy 2015-10-01 773 }
0db2e5d18f76a6 Robin Murphy 2015-10-01 774 if (!page) {
0db2e5d18f76a6 Robin Murphy 2015-10-01 775 __iommu_dma_free_pages(pages, i);
0db2e5d18f76a6 Robin Murphy 2015-10-01 776 return NULL;
0db2e5d18f76a6 Robin Murphy 2015-10-01 777 }
3b6b7e19e31a81 Robin Murphy 2016-04-13 778 count -= order_size;
3b6b7e19e31a81 Robin Murphy 2016-04-13 779 while (order_size--)
0db2e5d18f76a6 Robin Murphy 2015-10-01 780 pages[i++] = page++;
0db2e5d18f76a6 Robin Murphy 2015-10-01 781 }
0db2e5d18f76a6 Robin Murphy 2015-10-01 782 return pages;
0db2e5d18f76a6 Robin Murphy 2015-10-01 783 }
0db2e5d18f76a6 Robin Murphy 2015-10-01 784
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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