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Shutemov" Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [kas:lam 6/10] arch/x86/mm/fault.c:152:29: sparse: sparse: incorrect type in initializer (different address spaces) Message-ID: <202204290236.XX6P9C4v-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam head: 956305b67dd062e5a58c68c871dee2ee1d579feb commit: 2d7493c0421d267a906653b33aca69bf87f0595f [6/10] x86/uaccess: Remove tags from the address before checking config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220429/202204290236.XX6P9C4v-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=2d7493c0421d267a906653b33aca69bf87f0595f git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git git fetch --no-tags kas lam git checkout 2d7493c0421d267a906653b33aca69bf87f0595f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/mm/ kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> arch/x86/mm/fault.c:152:29: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned char [noderef] __user *__ptr_clean @@ got unsigned char *[assigned] instr @@ arch/x86/mm/fault.c:152:29: sparse: expected unsigned char [noderef] __user *__ptr_clean arch/x86/mm/fault.c:152:29: sparse: got unsigned char *[assigned] instr -- kernel/signal.c: note: in included file (through arch/x86/include/uapi/asm/signal.h, arch/x86/include/asm/signal.h, include/uapi/linux/signal.h, ...): include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:195:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:195:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:195:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:198:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:198:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:198:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:480:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:480:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:480:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:484:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:484:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:484:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:517:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:517:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:517:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:520:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:520:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:520:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:542:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct k_sigaction *ka @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:542:53: sparse: expected struct k_sigaction *ka kernel/signal.c:542:53: sparse: got struct k_sigaction [noderef] __rcu * include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:698:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:698:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:698:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:700:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:700:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:700:31: sparse: got struct spinlock [noderef] __rcu * >> kernel/signal.c:1263:29: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned char [noderef] __user *__ptr_clean @@ got unsigned char * @@ kernel/signal.c:1263:29: sparse: expected unsigned char [noderef] __user *__ptr_clean kernel/signal.c:1263:29: sparse: got unsigned char * kernel/signal.c:1330:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1330:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1330:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1331:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *action @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:1331:16: sparse: expected struct k_sigaction *action kernel/signal.c:1331:16: sparse: got struct k_sigaction [noderef] __rcu * kernel/signal.c:1351:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1351:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1351:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1929:36: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1929:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1929:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2039:44: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2058:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2058:65: sparse: expected struct task_struct *tsk kernel/signal.c:2058:65: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2059:40: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2077:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *psig @@ got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand @@ kernel/signal.c:2077:14: sparse: expected struct sighand_struct *psig kernel/signal.c:2077:14: sparse: got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand kernel/signal.c:2106:46: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct task_struct *t @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2106:46: sparse: expected struct task_struct *t kernel/signal.c:2106:46: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2107:34: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2107:34: sparse: expected struct task_struct *parent kernel/signal.c:2107:34: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2136:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2136:24: sparse: expected struct task_struct *parent kernel/signal.c:2136:24: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2139:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/signal.c:2139:24: sparse: expected struct task_struct *parent kernel/signal.c:2139:24: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/signal.c:2172:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2172:17: sparse: expected struct sighand_struct *sighand kernel/signal.c:2172:17: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2213:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2213:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2213:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2215:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2215:39: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2215:39: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2266:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2266:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2266:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2322:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2322:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2322:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2363:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2363:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2363:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2365:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2365:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2365:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2464:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2464:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2464:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2548:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2548:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2548:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2560:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2560:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2560:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2595:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2595:52: sparse: expected struct task_struct *tsk kernel/signal.c:2595:52: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2597:49: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2635:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2635:49: sparse: expected struct sighand_struct *sighand kernel/signal.c:2635:49: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2964:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2964:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2964:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2984:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2984:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2984:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3051:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3051:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3051:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3053:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3053:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3053:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3204:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3204:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3204:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3207:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3207:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3207:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3594:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3594:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3594:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3606:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3606:37: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3606:37: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3611:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3611:35: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3611:35: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3616:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3616:29: sparse: expected struct spinlock [usertype] *lock vim +152 arch/x86/mm/fault.c d24df8ecf9b6f8 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 119 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 120 static int 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 121 is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr) 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 122 { 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 123 unsigned char *max_instr; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 124 unsigned char *instr; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 125 int prefetch = 0; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 126 d24df8ecf9b6f8 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 127 /* Erratum #91 affects AMD K8, pre-NPT CPUs */ d24df8ecf9b6f8 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 128 if (!is_amd_k8_pre_npt()) d24df8ecf9b6f8 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 129 return 0; d24df8ecf9b6f8 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 130 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 131 /* 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 132 * If it was a exec (instruction fetch) fault on NX page, then 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 133 * do not ignore the fault: 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 134 */ 1067f030994c69 arch/x86/mm/fault.c Ricardo Neri 2017-10-27 135 if (error_code & X86_PF_INSTR) 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 136 return 0; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 137 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 138 instr = (void *)convert_ip_to_linear(current, regs); 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 139 max_instr = instr + 15; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 140 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 141 /* 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 142 * This code has historically always bailed out if IP points to a 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 143 * not-present page (e.g. due to a race). No one has ever 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 144 * complained about this. 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 145 */ 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 146 pagefault_disable(); 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 147 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 148 while (instr < max_instr) { 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 149 unsigned char opcode; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 150 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 151 if (user_mode(regs)) { 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 @152 if (get_user(opcode, instr)) 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 153 break; 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 154 } else { 25f12ae45fc193 arch/x86/mm/fault.c Christoph Hellwig 2020-06-17 155 if (get_kernel_nofault(opcode, instr)) 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 156 break; 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 157 } 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 158 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 159 instr++; 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 160 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 161 if (!check_prefetch_opcode(regs, instr, opcode, &prefetch)) 107a03678cac0d arch/x86/mm/fault.c Ingo Molnar 2009-02-20 162 break; ^1da177e4c3f41 arch/x86_64/mm/fault.c Linus Torvalds 2005-04-16 163 } 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 164 35f1c89b0cce24 arch/x86/mm/fault.c Andy Lutomirski 2021-02-09 165 pagefault_enable(); ^1da177e4c3f41 arch/x86_64/mm/fault.c Linus Torvalds 2005-04-16 166 return prefetch; ^1da177e4c3f41 arch/x86_64/mm/fault.c Linus Torvalds 2005-04-16 167 } ^1da177e4c3f41 arch/x86_64/mm/fault.c Linus Torvalds 2005-04-16 168 :::::: The code at line 152 was first introduced by commit :::::: 35f1c89b0cce247bf0213df243ed902989b1dcda x86/fault: Fix AMD erratum #91 errata fixup for user code :::::: TO: Andy Lutomirski :::::: CC: Borislav Petkov -- 0-DAY CI Kernel Test Service https://01.org/lkp