tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6a9dc5fd6170d0a41c8a14eb19e63d94bea5705a commit: d7e673ec2c8e0ea39c4c70fc490d67d7fbda869d dma-pool: Only allocate from CMA when in same memory zone date: 11 days ago config: arc-randconfig-m031-20200824 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> New smatch warnings: kernel/dma/pool.c:79 cma_in_zone() warn: always true condition '(end <= ((((32) == 64)) ?~0:((1 << (32)) - 1))) => (0-u32max <= u32max)' Old smatch warnings: arch/arc/include/asm/thread_info.h:65 current_thread_info() error: uninitialized symbol 'sp'. # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d7e673ec2c8e0ea39c4c70fc490d67d7fbda869d git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d7e673ec2c8e0ea39c4c70fc490d67d7fbda869d vim +79 kernel/dma/pool.c 59 60 static bool cma_in_zone(gfp_t gfp) 61 { 62 unsigned long size; 63 phys_addr_t end; 64 struct cma *cma; 65 66 cma = dev_get_cma_area(NULL); 67 if (!cma) 68 return false; 69 70 size = cma_get_size(cma); 71 if (!size) 72 return false; 73 74 /* CMA can't cross zone boundaries, see cma_activate_area() */ 75 end = cma_get_base(cma) + size - 1; 76 if (IS_ENABLED(CONFIG_ZONE_DMA) && (gfp & GFP_DMA)) 77 return end <= DMA_BIT_MASK(zone_dma_bits); 78 if (IS_ENABLED(CONFIG_ZONE_DMA32) && (gfp & GFP_DMA32)) > 79 return end <= DMA_BIT_MASK(32); 80 return true; 81 } 82 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
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