Hi Luc, I love your patch! Perhaps something to improve: [auto build test WARNING on hnaz-linux-mm/master] [also build test WARNING on next-20200806] [cannot apply to linux/master linus/master v5.8] [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] url: https://github.com/0day-ci/linux/commits/Luc-Van-Oostenryck/sparse-use-static-inline-for-__chk_-user-io-_ptr/20200807-034410 base: https://github.com/hnaz/linux-mm master config: x86_64-randconfig-s022-20200805 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-117-g8c7aee71-dirty # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression >> arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned long long [usertype] * @@ >> arch/x86/ia32/ia32_signal.c:350:9: sparse: expected void const volatile [noderef] __user *ptr arch/x86/ia32/ia32_signal.c:350:9: sparse: got unsigned long long [usertype] * arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression arch/x86/ia32/ia32_signal.c:350:9: sparse: sparse: cast removes address space '__user' of expression vim +350 arch/x86/ia32/ia32_signal.c ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 299 235b80226b986d arch/x86/ia32/ia32_signal.c Al Viro 2012-11-09 300 int ia32_setup_rt_frame(int sig, struct ksignal *ksig, ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 301 compat_sigset_t *set, struct pt_regs *regs) ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 302 { 3b0d29ee1c73b6 arch/x86/ia32/ia32_signal.c Hiroshi Shimamoto 2008-12-17 303 struct rt_sigframe_ia32 __user *frame; af65d64845a90c arch/x86/ia32/ia32_signal.c Roland McGrath 2008-01-30 304 void __user *restorer; 44a1d996325982 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 305 void __user *fp = NULL; ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 306 57d563c8292569 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 307 /* unsafe_put_user optimizes that into a single 8 byte store */ 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 308 static const struct { 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 309 u8 movl; 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 310 u32 val; 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 311 u16 int80; 9cc3c49ed1b1db arch/x86/ia32/ia32_signal.c Hiroshi Shimamoto 2008-11-11 312 u8 pad; 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 313 } __attribute__((packed)) code = { 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 314 0xb8, 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 315 __NR_ia32_rt_sigreturn, 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 316 0x80cd, 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 317 0, 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 318 }; 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 319 44a1d996325982 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 320 frame = get_sigframe(ksig, regs, sizeof(*frame), &fp); ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 321 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 322 if (!user_access_begin(frame, sizeof(*frame))) 3d0aedd9538e6b arch/x86/ia32/ia32_signal.c Hiroshi Shimamoto 2008-09-12 323 return -EFAULT; ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 324 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 325 unsafe_put_user(sig, &frame->sig, Efault); 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 326 unsafe_put_user(ptr_to_compat(&frame->info), &frame->pinfo, Efault); 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 327 unsafe_put_user(ptr_to_compat(&frame->uc), &frame->puc, Efault); ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 328 ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 329 /* Create the ucontext. */ ff661350157266 arch/x86/ia32/ia32_signal.c Marco Elver 2019-07-11 330 if (static_cpu_has(X86_FEATURE_XSAVE)) 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 331 unsafe_put_user(UC_FP_XSTATE, &frame->uc.uc_flags, Efault); c37b5efea43f9e arch/x86/ia32/ia32_signal.c Suresh Siddha 2008-07-29 332 else 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 333 unsafe_put_user(0, &frame->uc.uc_flags, Efault); 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 334 unsafe_put_user(0, &frame->uc.uc_link, Efault); 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 335 unsafe_compat_save_altstack(&frame->uc.uc_stack, regs->sp, Efault); ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 336 235b80226b986d arch/x86/ia32/ia32_signal.c Al Viro 2012-11-09 337 if (ksig->ka.sa.sa_flags & SA_RESTORER) 235b80226b986d arch/x86/ia32/ia32_signal.c Al Viro 2012-11-09 338 restorer = ksig->ka.sa.sa_restorer; af65d64845a90c arch/x86/ia32/ia32_signal.c Roland McGrath 2008-01-30 339 else 6f121e548f8367 arch/x86/ia32/ia32_signal.c Andy Lutomirski 2014-05-05 340 restorer = current->mm->context.vdso + 0a6d1fa0d2b48f arch/x86/ia32/ia32_signal.c Andy Lutomirski 2015-10-05 341 vdso_image_32.sym___kernel_rt_sigreturn; 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 342 unsafe_put_user(ptr_to_compat(restorer), &frame->pretcode, Efault); ^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds 2005-04-16 343 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 344 /* 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 345 * Not actually used anymore, but left because some gdb 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 346 * versions need it. 99b9cdf758af70 arch/x86/ia32/ia32_signal.c Thomas Gleixner 2008-01-30 347 */ 39f16c1c0f14e9 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 348 unsafe_put_user(*((u64 *)&code), (u64 __user *)frame->retcode, Efault); 44a1d996325982 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 349 unsafe_put_sigcontext32(&frame->uc.uc_mcontext, fp, regs, set, Efault); 57d563c8292569 arch/x86/ia32/ia32_signal.c Al Viro 2020-02-15 @350 unsafe_put_user(*(__u64 *)set, (__u64 *)&frame->uc.uc_sigmask, Efault); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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