Hi Casey, kernel test robot noticed the following build warnings: [auto build test WARNING on pcmoore-audit/next] [also build test WARNING on pcmoore-selinux/next zohar-integrity/next-integrity linus/master v6.11-rc5 next-20240830] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Casey-Schaufler/LSM-Add-the-lsmblob-data-structure/20240830-085050 base: https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git next patch link: https://lore.kernel.org/r/20240830003411.16818-11-casey%40schaufler-ca.com patch subject: [PATCH v2 10/13] LSM: Create new security_cred_getlsmblob LSM hook config: i386-buildonly-randconfig-006-20240830 (https://download.01.org/0day-ci/archive/20240830/202408302309.08WssiJu-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240830/202408302309.08WssiJu-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408302309.08WssiJu-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from kernel/dma/swiotlb.c:53: In file included from include/trace/events/swiotlb.h:41: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:62: include/linux/security.h:1199:3: error: use of undeclared identifier 'secid' 1199 | *secid = 0; | ^ >> kernel/dma/swiotlb.c:639:20: warning: shift count >= width of type [-Wshift-count-overflow] 638 | if (IS_ENABLED(CONFIG_ZONE_DMA32) && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 639 | phys_limit < DMA_BIT_MASK(64) && | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ 640 | !(gfp & (__GFP_DMA32 | __GFP_DMA))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:77:54: note: expanded from macro 'DMA_BIT_MASK' 77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) | ^ include/linux/compiler.h:55:47: note: expanded from macro 'if' 55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:57:52: note: expanded from macro '__trace_if_var' 57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> kernel/dma/swiotlb.c:639:20: warning: shift count >= width of type [-Wshift-count-overflow] 638 | if (IS_ENABLED(CONFIG_ZONE_DMA32) && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 639 | phys_limit < DMA_BIT_MASK(64) && | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ 640 | !(gfp & (__GFP_DMA32 | __GFP_DMA))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:77:54: note: expanded from macro 'DMA_BIT_MASK' 77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) | ^ include/linux/compiler.h:55:47: note: expanded from macro 'if' 55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:57:61: note: expanded from macro '__trace_if_var' 57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> kernel/dma/swiotlb.c:639:20: warning: shift count >= width of type [-Wshift-count-overflow] 638 | if (IS_ENABLED(CONFIG_ZONE_DMA32) && | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 639 | phys_limit < DMA_BIT_MASK(64) && | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ 640 | !(gfp & (__GFP_DMA32 | __GFP_DMA))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:77:54: note: expanded from macro 'DMA_BIT_MASK' 77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) | ^ include/linux/compiler.h:55:47: note: expanded from macro 'if' 55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:57:86: note: expanded from macro '__trace_if_var' 57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ~~~~~~~~~~~~~~~~~^~~~~ include/linux/compiler.h:68:3: note: expanded from macro '__trace_if_value' 68 | (cond) ? \ | ^~~~ 3 warnings and 1 error generated. vim +639 kernel/dma/swiotlb.c 79636caad3618e Petr Tesarik 2023-08-01 602 79636caad3618e Petr Tesarik 2023-08-01 603 /** 79636caad3618e Petr Tesarik 2023-08-01 604 * swiotlb_alloc_tlb() - allocate a dynamic IO TLB buffer 79636caad3618e Petr Tesarik 2023-08-01 605 * @dev: Device for which a memory pool is allocated. 79636caad3618e Petr Tesarik 2023-08-01 606 * @bytes: Size of the buffer. 79636caad3618e Petr Tesarik 2023-08-01 607 * @phys_limit: Maximum allowed physical address of the buffer. 79636caad3618e Petr Tesarik 2023-08-01 608 * @gfp: GFP flags for the allocation. 79636caad3618e Petr Tesarik 2023-08-01 609 * 79636caad3618e Petr Tesarik 2023-08-01 610 * Return: Allocated pages, or %NULL on allocation failure. 79636caad3618e Petr Tesarik 2023-08-01 611 */ 79636caad3618e Petr Tesarik 2023-08-01 612 static struct page *swiotlb_alloc_tlb(struct device *dev, size_t bytes, 79636caad3618e Petr Tesarik 2023-08-01 613 u64 phys_limit, gfp_t gfp) 79636caad3618e Petr Tesarik 2023-08-01 614 { 79636caad3618e Petr Tesarik 2023-08-01 615 struct page *page; 79636caad3618e Petr Tesarik 2023-08-01 616 79636caad3618e Petr Tesarik 2023-08-01 617 /* 79636caad3618e Petr Tesarik 2023-08-01 618 * Allocate from the atomic pools if memory is encrypted and 79636caad3618e Petr Tesarik 2023-08-01 619 * the allocation is atomic, because decrypting may block. 79636caad3618e Petr Tesarik 2023-08-01 620 */ 79636caad3618e Petr Tesarik 2023-08-01 621 if (!gfpflags_allow_blocking(gfp) && dev && force_dma_unencrypted(dev)) { 79636caad3618e Petr Tesarik 2023-08-01 622 void *vaddr; 79636caad3618e Petr Tesarik 2023-08-01 623 79636caad3618e Petr Tesarik 2023-08-01 624 if (!IS_ENABLED(CONFIG_DMA_COHERENT_POOL)) 79636caad3618e Petr Tesarik 2023-08-01 625 return NULL; 79636caad3618e Petr Tesarik 2023-08-01 626 79636caad3618e Petr Tesarik 2023-08-01 627 return dma_alloc_from_pool(dev, bytes, &vaddr, gfp, 79636caad3618e Petr Tesarik 2023-08-01 628 dma_coherent_ok); 79636caad3618e Petr Tesarik 2023-08-01 629 } 79636caad3618e Petr Tesarik 2023-08-01 630 79636caad3618e Petr Tesarik 2023-08-01 631 gfp &= ~GFP_ZONEMASK; 79636caad3618e Petr Tesarik 2023-08-01 632 if (phys_limit <= DMA_BIT_MASK(zone_dma_bits)) 79636caad3618e Petr Tesarik 2023-08-01 633 gfp |= __GFP_DMA; 79636caad3618e Petr Tesarik 2023-08-01 634 else if (phys_limit <= DMA_BIT_MASK(32)) 79636caad3618e Petr Tesarik 2023-08-01 635 gfp |= __GFP_DMA32; 79636caad3618e Petr Tesarik 2023-08-01 636 a5e3b127455d07 Petr Tesarik 2023-11-02 637 while (IS_ERR(page = alloc_dma_pages(gfp, bytes, phys_limit))) { 79636caad3618e Petr Tesarik 2023-08-01 638 if (IS_ENABLED(CONFIG_ZONE_DMA32) && 79636caad3618e Petr Tesarik 2023-08-01 @639 phys_limit < DMA_BIT_MASK(64) && 79636caad3618e Petr Tesarik 2023-08-01 640 !(gfp & (__GFP_DMA32 | __GFP_DMA))) 79636caad3618e Petr Tesarik 2023-08-01 641 gfp |= __GFP_DMA32; 79636caad3618e Petr Tesarik 2023-08-01 642 else if (IS_ENABLED(CONFIG_ZONE_DMA) && 79636caad3618e Petr Tesarik 2023-08-01 643 !(gfp & __GFP_DMA)) 79636caad3618e Petr Tesarik 2023-08-01 644 gfp = (gfp & ~__GFP_DMA32) | __GFP_DMA; 79636caad3618e Petr Tesarik 2023-08-01 645 else 79636caad3618e Petr Tesarik 2023-08-01 646 return NULL; 79636caad3618e Petr Tesarik 2023-08-01 647 } 79636caad3618e Petr Tesarik 2023-08-01 648 79636caad3618e Petr Tesarik 2023-08-01 649 return page; 79636caad3618e Petr Tesarik 2023-08-01 650 } 79636caad3618e Petr Tesarik 2023-08-01 651 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
