CC: [email protected] BCC: [email protected] In-Reply-To: <[email protected]> References: <[email protected]> TO: Tianyu Lan <[email protected]>
Hi Tianyu, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v5.19-rc4 next-20220628] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Tianyu-Lan/swiotlb-Split-up-single-swiotlb-lock/20220618-010819 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything :::::: branch date: 11 days ago :::::: commit date: 11 days ago config: x86_64-randconfig-m001-20220627 (https://download.01.org/0day-ci/archive/20220629/[email protected]/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: kernel/dma/swiotlb.c:956 rmem_swiotlb_device_init() error: dereferencing freed memory 'mem' vim +/mem +956 kernel/dma/swiotlb.c f4111e39a52aa5d Claire Chang 2021-06-19 926 0b84e4f8b793eb4 Claire Chang 2021-06-19 927 static int rmem_swiotlb_device_init(struct reserved_mem *rmem, 0b84e4f8b793eb4 Claire Chang 2021-06-19 928 struct device *dev) 0b84e4f8b793eb4 Claire Chang 2021-06-19 929 { 0b84e4f8b793eb4 Claire Chang 2021-06-19 930 struct io_tlb_mem *mem = rmem->priv; 0b84e4f8b793eb4 Claire Chang 2021-06-19 931 unsigned long nslabs = rmem->size >> IO_TLB_SHIFT; 0b84e4f8b793eb4 Claire Chang 2021-06-19 932 47bb420a6670ad3 Tianyu Lan 2022-06-17 933 /* Set Per-device io tlb area to one */ 47bb420a6670ad3 Tianyu Lan 2022-06-17 934 unsigned int nareas = 1; 47bb420a6670ad3 Tianyu Lan 2022-06-17 935 0b84e4f8b793eb4 Claire Chang 2021-06-19 936 /* 0b84e4f8b793eb4 Claire Chang 2021-06-19 937 * Since multiple devices can share the same pool, the private data, 0b84e4f8b793eb4 Claire Chang 2021-06-19 938 * io_tlb_mem struct, will be initialized by the first device attached 0b84e4f8b793eb4 Claire Chang 2021-06-19 939 * to it. 0b84e4f8b793eb4 Claire Chang 2021-06-19 940 */ 0b84e4f8b793eb4 Claire Chang 2021-06-19 941 if (!mem) { 463e862ac63ef27 Will Deacon 2021-07-20 942 mem = kzalloc(sizeof(*mem), GFP_KERNEL); 0b84e4f8b793eb4 Claire Chang 2021-06-19 943 if (!mem) 0b84e4f8b793eb4 Claire Chang 2021-06-19 944 return -ENOMEM; 0b84e4f8b793eb4 Claire Chang 2021-06-19 945 404f9373c4e5c94 Robin Murphy 2022-01-24 946 mem->slots = kcalloc(nslabs, sizeof(*mem->slots), GFP_KERNEL); 463e862ac63ef27 Will Deacon 2021-07-20 947 if (!mem->slots) { 463e862ac63ef27 Will Deacon 2021-07-20 948 kfree(mem); 463e862ac63ef27 Will Deacon 2021-07-20 949 return -ENOMEM; 463e862ac63ef27 Will Deacon 2021-07-20 950 } 463e862ac63ef27 Will Deacon 2021-07-20 951 47bb420a6670ad3 Tianyu Lan 2022-06-17 952 mem->areas = kcalloc(nareas, sizeof(*mem->areas), 47bb420a6670ad3 Tianyu Lan 2022-06-17 953 GFP_KERNEL); 47bb420a6670ad3 Tianyu Lan 2022-06-17 954 if (!mem->areas) { 47bb420a6670ad3 Tianyu Lan 2022-06-17 955 kfree(mem); 47bb420a6670ad3 Tianyu Lan 2022-06-17 @956 kfree(mem->slots); 47bb420a6670ad3 Tianyu Lan 2022-06-17 957 return -ENOMEM; 47bb420a6670ad3 Tianyu Lan 2022-06-17 958 } 47bb420a6670ad3 Tianyu Lan 2022-06-17 959 0b84e4f8b793eb4 Claire Chang 2021-06-19 960 set_memory_decrypted((unsigned long)phys_to_virt(rmem->base), 0b84e4f8b793eb4 Claire Chang 2021-06-19 961 rmem->size >> PAGE_SHIFT); e15db62bc5648ab Christoph Hellwig 2022-06-01 962 swiotlb_init_io_tlb_mem(mem, rmem->base, nslabs, SWIOTLB_FORCE, 47bb420a6670ad3 Tianyu Lan 2022-06-17 963 false, nareas); 0b84e4f8b793eb4 Claire Chang 2021-06-19 964 mem->for_alloc = true; 0b84e4f8b793eb4 Claire Chang 2021-06-19 965 0b84e4f8b793eb4 Claire Chang 2021-06-19 966 rmem->priv = mem; 0b84e4f8b793eb4 Claire Chang 2021-06-19 967 35265899acef135 Robin Murphy 2022-01-24 968 swiotlb_create_debugfs_files(mem, rmem->name); 0b84e4f8b793eb4 Claire Chang 2021-06-19 969 } 0b84e4f8b793eb4 Claire Chang 2021-06-19 970 0b84e4f8b793eb4 Claire Chang 2021-06-19 971 dev->dma_io_tlb_mem = mem; 0b84e4f8b793eb4 Claire Chang 2021-06-19 972 0b84e4f8b793eb4 Claire Chang 2021-06-19 973 return 0; 0b84e4f8b793eb4 Claire Chang 2021-06-19 974 } 0b84e4f8b793eb4 Claire Chang 2021-06-19 975 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
