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R. Silva" , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, LKML References: <202408011956.wscyBwq6-lkp@intel.com> <138da3e5-0e24-41a6-bb35-df5d07045eb3@embeddedor.com> <20240801190813.GC122261@thelio-3990X> Content-Language: en-US From: "Gustavo A. R. Silva" In-Reply-To: <20240801190813.GC122261@thelio-3990X> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - lists.linux.dev X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 201.172.173.139 X-Source-L: No X-Exim-ID: 1sZcFD-000M1F-0N X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.15.14]) [201.172.173.139]:48040 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 3 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfIG4W++TflpeRgVnBDo1XXzShZLyYpfbOKMcprqeEZ+Siz78HqVANzE/26WhuWGBmHfnXl9G3IkrzG8BH6guIjCoyAMr1bS2yo05mA/pYZeexu9ulZjD CADiP4VVmEtR50qFJSgbp3zawopphazu9cGS3n0Z5MvKN1mEXPYNRl/my51pxVAhMcqnaiIO6OCUnTIwO4+0TKRn4kfWMixoFxU= On 01/08/24 13:08, Nathan Chancellor wrote: > On Thu, Aug 01, 2024 at 06:47:58AM -0600, Gustavo A. R. Silva wrote: >> >> >> On 01/08/24 05:35, kernel test robot wrote: >>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/wfamnae-next20240729-cbc-2 >>> head: df15c862c1b93b6e1f6c90b0d7971f7a6ad66751 >>> commit: e7cd9f429a852fb7e37a706c7d08fc36e7863e06 [11/18] RDMA/uverbs: Use static_assert() to check struct sizes >>> config: hexagon-randconfig-001-20240801 (https://download.01.org/0day-ci/archive/20240801/202408011956.wscyBwq6-lkp@intel.com/config) >>> compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 430b90f04533b099d788db2668176038be38c53b) >> >> >> Clang 20.0.0?? (thinkingface) > > Indeed, Clang 19 branched and main is now 20 :) > > https://github.com/llvm/llvm-project/commit/8f701b5df0adb3a2960d78ca2ad9cf53f39ba2fe Yeah, but is that a stable release? BTW, I don't see GCC reporting the same problem below: >>>>> include/rdma/uverbs_ioctl.h:643:15: error: static assertion failed due to requirement '__builtin_offsetof(struct uverbs_attr_bundle, attrs) == sizeof(struct uverbs_attr_bundle_hdr)': struct member likely outside of struct_group_tagged() >>> 643 | static_assert(offsetof(struct uverbs_attr_bundle, attrs) == sizeof(struct uverbs_attr_bundle_hdr), >>> | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> 644 | "struct member likely outside of struct_group_tagged()"); >>> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> include/linux/stddef.h:16:32: note: expanded from macro 'offsetof' >>> 16 | #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER) >>> | ^ >>> include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert' >>> 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) >>> | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert' >>> 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) >>> | ^~~~ >>> include/rdma/uverbs_ioctl.h:643:58: note: expression evaluates to '56 == 52' >>> 643 | static_assert(offsetof(struct uverbs_attr_bundle, attrs) == sizeof(struct uverbs_attr_bundle_hdr), >>> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> 644 | "struct member likely outside of struct_group_tagged()"); >>> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert' >>> 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) >>> | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ >>> include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert' >>> 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) >>> | ^~~~ >>> 7 warnings and 1 error generated. >>> >>> >>> vim +643 include/rdma/uverbs_ioctl.h >>> >>> 630 >>> 631 struct uverbs_attr_bundle { >>> 632 /* New members MUST be added within the struct_group() macro below. */ >>> 633 struct_group_tagged(uverbs_attr_bundle_hdr, hdr, >>> 634 struct ib_udata driver_udata; >>> 635 struct ib_udata ucore; >>> 636 struct ib_uverbs_file *ufile; >>> 637 struct ib_ucontext *context; >>> 638 struct ib_uobject *uobject; >>> 639 DECLARE_BITMAP(attr_present, UVERBS_API_ATTR_BKEY_LEN); >>> 640 ); >>> 641 struct uverbs_attr attrs[]; >>> 642 }; >>> > 643 static_assert(offsetof(struct uverbs_attr_bundle, attrs) == sizeof(struct uverbs_attr_bundle_hdr), >>> 644 "struct member likely outside of struct_group_tagged()"); >>> 645 >>> >> Thanks -- Gustavo