tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git set_fs head: 0a081326831928b0d739bce68b8c0f9138b9c8ba commit: a954036380ae20dbfa0c203bf6cafb21d1f3cedd [6/11] uaccess: generalize access_ok() config: nios2-randconfig-s031-20220213 (https://download.01.org/0day-ci/archive/20220213/202202131038.l60bQPlc-lk...) compiler: nios2-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/commi... git remote add arnd-playground https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git git fetch --no-tags arnd-playground set_fs git checkout a954036380ae20dbfa0c203bf6cafb21d1f3cedd # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=nios2 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/nios2/kernel/signal.c:109:14: sparse: expected void const [noderef] __user *ptr arch/nios2/kernel/signal.c:109:14: sparse: got struct rt_sigframe *frame arch/nios2/kernel/signal.c:112:37: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct sigset_t * @@ arch/nios2/kernel/signal.c:112:37: sparse: expected void const [noderef] __user *from arch/nios2/kernel/signal.c:112:37: sparse: got struct sigset_t * arch/nios2/kernel/signal.c:189:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct siginfo [noderef] [usertype] __user *to @@ got struct siginfo * @@ arch/nios2/kernel/signal.c:189:46: sparse: expected struct siginfo [noderef] [usertype] __user *to arch/nios2/kernel/signal.c:189:46: sparse: got struct siginfo * arch/nios2/kernel/signal.c:192:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long [noderef] __user *__pu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:192:16: sparse: expected unsigned long [noderef] __user *__pu_ptr arch/nios2/kernel/signal.c:192:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:193:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ucontext *[noderef] __user *__pu_ptr @@ got struct ucontext ** @@ arch/nios2/kernel/signal.c:193:16: sparse: expected struct ucontext *[noderef] __user *__pu_ptr arch/nios2/kernel/signal.c:193:16: sparse: got struct ucontext ** arch/nios2/kernel/signal.c:194:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sigaltstack [noderef] [usertype] __user * @@ got struct sigaltstack * @@ arch/nios2/kernel/signal.c:194:33: sparse: expected struct sigaltstack [noderef] [usertype] __user * arch/nios2/kernel/signal.c:194:33: sparse: got struct sigaltstack * arch/nios2/kernel/signal.c:196:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got struct sigset_t * @@ arch/nios2/kernel/signal.c:196:30: sparse: expected void [noderef] __user *to arch/nios2/kernel/signal.c:196:30: sparse: got struct sigset_t * arch/nios2/kernel/signal.c:48:15: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const [noderef] __user *__gu_ptr @@ got int * @@ arch/nios2/kernel/signal.c:48:15: sparse: expected int const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:48:15: sparse: got int * arch/nios2/kernel/signal.c:52:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:52:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:52:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:53:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:53:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:53:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:54:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:54:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:54:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:55:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:55:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:55:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:56:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:56:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:56:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:57:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:57:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:57:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:58:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:58:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:58:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:59:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:59:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:59:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:60:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:60:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:60:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:61:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:61:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:61:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:62:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:62:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:62:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:63:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:63:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:63:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:64:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:64:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:64:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:65:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:65:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:65:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:66:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:66:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:66:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:67:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:67:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:67:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:68:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:68:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:68:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:69:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:69:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:69:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:70:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:70:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:70:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:71:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:71:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:71:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:72:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:72:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:72:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:73:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:73:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:73:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:74:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:74:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:74:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:76:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:76:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:76:16: sparse: got unsigned long * arch/nios2/kernel/signal.c:78:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__gu_ptr @@ got unsigned long * @@ arch/nios2/kernel/signal.c:78:16: sparse: expected unsigned long const [noderef] __user *__gu_ptr arch/nios2/kernel/signal.c:78:16: sparse: got unsigned long * vim +109 arch/nios2/kernel/signal.c b53e906d255d7b Ley Foon Tan 2014-11-06 100 b53e906d255d7b Ley Foon Tan 2014-11-06 101 asmlinkage int do_rt_sigreturn(struct switch_stack *sw) b53e906d255d7b Ley Foon Tan 2014-11-06 102 { b53e906d255d7b Ley Foon Tan 2014-11-06 103 struct pt_regs *regs = (struct pt_regs *)(sw + 1); b53e906d255d7b Ley Foon Tan 2014-11-06 104 /* Verify, can we follow the stack back */ b53e906d255d7b Ley Foon Tan 2014-11-06 105 struct rt_sigframe *frame = (struct rt_sigframe *) regs->sp; b53e906d255d7b Ley Foon Tan 2014-11-06 106 sigset_t set; b53e906d255d7b Ley Foon Tan 2014-11-06 107 int rval; b53e906d255d7b Ley Foon Tan 2014-11-06 108 96d4f267e40f95 Linus Torvalds 2019-01-03 @109 if (!access_ok(frame, sizeof(*frame))) b53e906d255d7b Ley Foon Tan 2014-11-06 110 goto badframe; b53e906d255d7b Ley Foon Tan 2014-11-06 111 b53e906d255d7b Ley Foon Tan 2014-11-06 112 if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) b53e906d255d7b Ley Foon Tan 2014-11-06 113 goto badframe; b53e906d255d7b Ley Foon Tan 2014-11-06 114 b53e906d255d7b Ley Foon Tan 2014-11-06 115 set_current_blocked(&set); b53e906d255d7b Ley Foon Tan 2014-11-06 116 b53e906d255d7b Ley Foon Tan 2014-11-06 117 if (rt_restore_ucontext(regs, sw, &frame->uc, &rval)) b53e906d255d7b Ley Foon Tan 2014-11-06 118 goto badframe; b53e906d255d7b Ley Foon Tan 2014-11-06 119 b53e906d255d7b Ley Foon Tan 2014-11-06 120 return rval; b53e906d255d7b Ley Foon Tan 2014-11-06 121 b53e906d255d7b Ley Foon Tan 2014-11-06 122 badframe: 3cf5d076fb4d48 Eric W. Biederman 2019-05-23 123 force_sig(SIGSEGV); b53e906d255d7b Ley Foon Tan 2014-11-06 124 return 0; b53e906d255d7b Ley Foon Tan 2014-11-06 125 } b53e906d255d7b Ley Foon Tan 2014-11-06 126 :::::: The code at line 109 was first introduced by commit :::::: 96d4f267e40f9509e8a66e2b39e8b95655617693 Remove 'type' argument from access_ok() function :::::: TO: Linus Torvalds <torvalds(a)linux-foundation.org&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org