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charset=us-ascii tree: https://git.kernel.org/pub/scm/linux/kernel/git/thomas.weissschuh/linux.git b4/uapi-ucontext head: df361b22b2f106ba30caa3955db2858764c4a3db commit: b3b6bda8db008005cbd3da3b085bed301450704f [2/2] ucontext config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260310/202603100737.K3CuGFOl-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project c32caeec8158d634bb71ab8911a6031248b9fc47) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260310/202603100737.K3CuGFOl-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202603100737.K3CuGFOl-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from arch/arm/kernel/asm-offsets.c:32: >> arch/arm/kernel/signal.h:4:18: error: field has incomplete type 'struct ucontext' 4 | struct ucontext uc; | ^ arch/arm/kernel/signal.h:4:9: note: forward declaration of 'struct ucontext' 4 | struct ucontext uc; | ^ 1 error generated. make[3]: *** [scripts/Makefile.build:184: arch/arm/kernel/asm-offsets.s] Error 1 make[3]: Target 'prepare' not remade because of errors. make[2]: *** [Makefile:1341: prepare0] Error 2 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:248: __sub-make] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:248: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +4 arch/arm/kernel/signal.h 5c16595353e074 Nicolas Pitre 2017-08-09 2 5c16595353e074 Nicolas Pitre 2017-08-09 3 struct sigframe { 5c16595353e074 Nicolas Pitre 2017-08-09 @4 struct ucontext uc; 5c16595353e074 Nicolas Pitre 2017-08-09 5 unsigned long retcode[4]; 5c16595353e074 Nicolas Pitre 2017-08-09 6 }; 5c16595353e074 Nicolas Pitre 2017-08-09 7 :::::: The code at line 4 was first introduced by commit :::::: 5c16595353e0743af99294db48549c3145e3a5ad ARM: signal handling support for FDPIC_FUNCPTRS functions :::::: TO: Nicolas Pitre :::::: CC: Nicolas Pitre -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki