tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git testing5 head: 4096884562ee16421152cf2a7e2f434f31d52ccd commit: 70792a782b698370979efc8b229a25c36a81bb01 [5/40] x86: syscall: comment out syscalls with no entry symbol config: um-kunit_defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/commit/?id=70792a782b698370979efc8b229a25c36a81bb01 git remote add kbuild https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git git fetch --no-tags kbuild testing5 git checkout 70792a782b698370979efc8b229a25c36a81bb01 # save the attached .config to linux build tree make W=1 ARCH=um If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] In file included from arch/x86/um/sys_call_table_64.c:43: >> ./arch/x86/include/generated/asm/syscalls_64.h:1:11: error: expected declaration specifiers or '...' before numeric constant 1 | __SYSCALL(0, sys_read) | ^ >> ./arch/x86/include/generated/asm/syscalls_64.h:1:14: error: unknown type name 'sys_read' 1 | __SYSCALL(0, sys_read) | ^~~~~~~~ >> arch/x86/um/sys_call_table_64.c:55:30: error: 'sys_ni_syscall' undeclared here (not in a function); did you mean 'si_syscall'? 55 | [0 ... __NR_syscall_max] = &sys_ni_syscall, | ^~~~~~~~~~~~~~ | si_syscall In file included from arch/x86/um/sys_call_table_64.c:56: >> ./arch/x86/include/generated/asm/syscalls_64.h:1:1: error: implicit declaration of function '__SYSCALL'; did you mean 'PT_SYSCALL_NR'? [-Werror=implicit-function-declaration] 1 | __SYSCALL(0, sys_read) | ^~~~~~~~~ | PT_SYSCALL_NR >> ./arch/x86/include/generated/asm/syscalls_64.h:1:14: error: 'sys_read' undeclared here (not in a function) 1 | __SYSCALL(0, sys_read) | ^~~~~~~~ >> ./arch/x86/include/generated/asm/syscalls_64.h:2:1: error: expected '}' before '__SYSCALL' 2 | __SYSCALL(1, sys_write) | ^~~~~~~~~ arch/x86/um/sys_call_table_64.c:50:63: note: to match this '{' 50 | const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { | ^ cc1: some warnings being treated as errors vim +55 arch/x86/um/sys_call_table_64.c 80f9507886076de0 arch/um/sys-x86_64/syscall_table.c Paolo 'Blaisorblade' Giarrusso 2005-05-01 49 b485342bd79af363 arch/x86/um/sys_call_table_64.c Daniel Borkmann 2015-01-03 50 const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { 95906b24fbe4d22e arch/um/sys-x86_64/syscall_table.c Jeff Dike 2008-02-04 51 /* 45db1c6176c8171d arch/x86/um/sys_call_table_64.c H. Peter Anvin 2011-12-05 52 * Smells like a compiler bug -- it doesn't work 45db1c6176c8171d arch/x86/um/sys_call_table_64.c H. Peter Anvin 2011-12-05 53 * when the & below is removed. 95906b24fbe4d22e arch/um/sys-x86_64/syscall_table.c Jeff Dike 2008-02-04 54 */ 45db1c6176c8171d arch/x86/um/sys_call_table_64.c H. Peter Anvin 2011-12-05 @55 [0 ... __NR_syscall_max] = &sys_ni_syscall, 45db1c6176c8171d arch/x86/um/sys_call_table_64.c H. Peter Anvin 2011-12-05 56 #include <asm/syscalls_64.h> 80f9507886076de0 arch/um/sys-x86_64/syscall_table.c Paolo 'Blaisorblade' Giarrusso 2005-05-01 57 }; f87ea91d988637b3 arch/um/sys-x86_64/syscall_table.c Jeff Dike 2008-02-04 58 :::::: The code at line 55 was first introduced by commit :::::: 45db1c6176c8171d9ae6fa6d82e07d115a5950ca x86, um: Use the same style generated syscall tables as native :::::: TO: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> :::::: CC: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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