* [intel-tdx:guest-rebased 115/133] kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.
@ 2022-02-16 4:19 ` kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2022-02-16 4:19 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 851 bytes --]
tree: https://github.com/intel/tdx.git guest-rebased
head: 36c91f6d572820e8556972fd7644bd96798e85d6
commit: 77d5cb1c6d4fe32593d65a38b4732da6c90b8f29 [115/133] swiotlb: Split up single swiotlb lock
config: x86_64-randconfig-c002-20220214 (https://download.01.org/0day-ci/archive/20220216/202202161256.1zrqppDy-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
cocci warnings: (new ones prefixed by >>)
>> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.
Please review and possibly fold the followup patch.
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 4+ messages in thread* [intel-tdx:guest-rebased 115/133] kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless. @ 2022-02-16 4:19 ` kernel test robot 0 siblings, 0 replies; 4+ messages in thread From: kernel test robot @ 2022-02-16 4:19 UTC (permalink / raw) To: Andi Kleen; +Cc: kbuild-all, linux-kernel, Kirill A. Shutemov tree: https://github.com/intel/tdx.git guest-rebased head: 36c91f6d572820e8556972fd7644bd96798e85d6 commit: 77d5cb1c6d4fe32593d65a38b4732da6c90b8f29 [115/133] swiotlb: Split up single swiotlb lock config: x86_64-randconfig-c002-20220214 (https://download.01.org/0day-ci/archive/20220216/202202161256.1zrqppDy-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> cocci warnings: (new ones prefixed by >>) >> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless. Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org ^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] swiotlb: fix alloc_cast.cocci warnings 2022-02-16 4:19 ` kernel test robot @ 2022-02-16 4:11 ` kernel test robot -1 siblings, 0 replies; 4+ messages in thread From: kernel test robot @ 2022-02-16 4:11 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 1589 bytes --] From: kernel test robot <lkp@intel.com> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless. Remove casting the values returned by memory allocation functions like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc. Semantic patch information: This makes an effort to find cases of casting of values returned by kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc, kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes the casting as it is not required. The result in the patch case may need some reformatting. Generated by: scripts/coccinelle/api/alloc/alloc_cast.cocci Fixes: 77d5cb1c6d4f ("swiotlb: Split up single swiotlb lock") CC: Andi Kleen <ak@linux.intel.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> --- tree: https://github.com/intel/tdx.git guest-rebased head: 36c91f6d572820e8556972fd7644bd96798e85d6 commit: 77d5cb1c6d4fe32593d65a38b4732da6c90b8f29 [115/133] swiotlb: Split up single swiotlb lock :::::: branch date: 19 hours ago :::::: commit date: 2 weeks ago kernel/dma/swiotlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -430,7 +430,7 @@ swiotlb_late_init_with_tbl(char *tlb, un return -ENOMEM; } - mem->areas = (struct io_tlb_area *)kcalloc(num_areas, + mem->areas = kcalloc(num_areas, sizeof(struct io_tlb_area), GFP_KERNEL); if (!mem->areas) { ^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] swiotlb: fix alloc_cast.cocci warnings @ 2022-02-16 4:11 ` kernel test robot 0 siblings, 0 replies; 4+ messages in thread From: kernel test robot @ 2022-02-16 4:11 UTC (permalink / raw) To: Andi Kleen; +Cc: kbuild-all, linux-kernel, Kirill A. Shutemov From: kernel test robot <lkp@intel.com> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless. Remove casting the values returned by memory allocation functions like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc. Semantic patch information: This makes an effort to find cases of casting of values returned by kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc, kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes the casting as it is not required. The result in the patch case may need some reformatting. Generated by: scripts/coccinelle/api/alloc/alloc_cast.cocci Fixes: 77d5cb1c6d4f ("swiotlb: Split up single swiotlb lock") CC: Andi Kleen <ak@linux.intel.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> --- tree: https://github.com/intel/tdx.git guest-rebased head: 36c91f6d572820e8556972fd7644bd96798e85d6 commit: 77d5cb1c6d4fe32593d65a38b4732da6c90b8f29 [115/133] swiotlb: Split up single swiotlb lock :::::: branch date: 19 hours ago :::::: commit date: 2 weeks ago kernel/dma/swiotlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -430,7 +430,7 @@ swiotlb_late_init_with_tbl(char *tlb, un return -ENOMEM; } - mem->areas = (struct io_tlb_area *)kcalloc(num_areas, + mem->areas = kcalloc(num_areas, sizeof(struct io_tlb_area), GFP_KERNEL); if (!mem->areas) { ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-02-16 4:20 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2022-02-16 4:19 [intel-tdx:guest-rebased 115/133] kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless kernel test robot 2022-02-16 4:19 ` kernel test robot 2022-02-16 4:11 ` [PATCH] swiotlb: fix alloc_cast.cocci warnings kernel test robot 2022-02-16 4:11 ` kernel test robot
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