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X-IronPort-AV: E=McAfee;i="6600,9927,10756"; a="364905094" X-IronPort-AV: E=Sophos;i="6.01,169,1684825200"; d="scan'208";a="364905094" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2023 23:34:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10756"; a="694926264" X-IronPort-AV: E=Sophos;i="6.01,169,1684825200"; d="scan'208";a="694926264" Received: from lkp-server01.sh.intel.com (HELO 783282924a45) ([10.239.97.150]) by orsmga006.jf.intel.com with ESMTP; 29 Jun 2023 23:34:16 -0700 Received: from kbuild by 783282924a45 with local (Exim 4.96) (envelope-from ) id 1qF7hv-000Elx-2x; Fri, 30 Jun 2023 06:34:15 +0000 Date: Fri, 30 Jun 2023 14:33:57 +0800 From: kernel test robot To: jeffxu@chromium.org, skhan@linuxfoundation.org, keescook@chromium.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, akpm@linux-foundation.org, dmitry.torokhov@gmail.com, dverkamp@chromium.org, asmadeus@codewreck.org, hughd@google.com, jeffxu@google.com, jorgelo@chromium.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, jannh@google.com, linux-hardening@vger.kernel.org, linux-security-module@vger.kernel.org Subject: Re: [PATCH v1 1/2] mm/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED Message-ID: <202306301435.dpXv0GwQ-lkp@intel.com> References: <20230630031721.623955-2-jeffxu@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230630031721.623955-2-jeffxu@google.com> X-Rspam-User: X-Stat-Signature: h97wj4cyiryn1qnqm73j96dr91t7kaa1 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 27CB6100008 X-HE-Tag: 1688106863-695160 X-HE-Meta: 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 8g5d2tBF 0ibvNtHWkJmTG9qB5LaFjaElTKpVd5UnCeg+DZ79TTXkjmimnQR+Rgc3MtwkS866BBOKb5pWcHze+taO/tarB7BcBSLz+H9JUZ4SNuxiv9yuB9TwDTKCw+1vUByCkGXJ65zqDQy4ahJdt4Wg9FzpgOMns9kiQBzgc7ndQfnL6GRbHuUOZKefvxJfd/Z+j5NSxA+lT2xQtXAd+3bpj8EPSrfax36cEjuNZ5KJVcoEc1hIczrs4dwT6UocHrYnZcXybj8f5nACAfaFpTJc0aK6OhR911nAtZk4mvt9FbZyYIGxrKdA17jzRpmosiWaRtLLLPsuKVBQSUiHULWY9qRe+qK8S5EbpTYOwPE0/PG4xArR6F9/22KtQTTHEK4QzzWOCUaWrA0HrTnON3tkNG3RX9NfafbKB4x/TwHBEtlYeFWyftq4PLjnFa/HC9kNjHU3CWGmT X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/jeffxu-chromium-org/mm-memfd-sysctl-fix-MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED/20230630-111827 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230630031721.623955-2-jeffxu%40google.com patch subject: [PATCH v1 1/2] mm/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED config: hexagon-randconfig-r005-20230630 (https://download.01.org/0day-ci/archive/20230630/202306301435.dpXv0GwQ-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce: (https://download.01.org/0day-ci/archive/20230630/202306301435.dpXv0GwQ-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/202306301435.dpXv0GwQ-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from mm/memfd.c:12: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from mm/memfd.c:12: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from mm/memfd.c:12: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> mm/memfd.c:273:15: error: use of undeclared identifier 'MEMFD_NOEXEC_SCOPE_EXEC' 273 | int sysctl = MEMFD_NOEXEC_SCOPE_EXEC; | ^ >> mm/memfd.c:311:17: error: use of undeclared identifier 'MEMFD_NOEXEC_SCOPE_NOEXEC_SEAL' 311 | if (sysctl == MEMFD_NOEXEC_SCOPE_NOEXEC_SEAL) | ^ >> mm/memfd.c:321:36: error: use of undeclared identifier 'MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED' 321 | if (flags & MFD_EXEC && sysctl >= MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED) { | ^ 6 warnings and 3 errors generated. vim +/MEMFD_NOEXEC_SCOPE_EXEC +273 mm/memfd.c 270 271 static int sysctl_memfd_noexec(void) 272 { > 273 int sysctl = MEMFD_NOEXEC_SCOPE_EXEC; 274 #ifdef CONFIG_SYSCTL 275 struct pid_namespace *ns; 276 277 ns = task_active_pid_ns(current); 278 if (ns) 279 sysctl = ns->memfd_noexec_scope; 280 #endif 281 return sysctl; 282 } 283 284 SYSCALL_DEFINE2(memfd_create, 285 const char __user *, uname, 286 unsigned int, flags) 287 { 288 char comm[TASK_COMM_LEN]; 289 unsigned int *file_seals; 290 struct file *file; 291 int fd, error; 292 char *name; 293 long len; 294 int sysctl = sysctl_memfd_noexec(); 295 296 if (!(flags & MFD_HUGETLB)) { 297 if (flags & ~(unsigned int)MFD_ALL_FLAGS) 298 return -EINVAL; 299 } else { 300 /* Allow huge page size encoding in flags. */ 301 if (flags & ~(unsigned int)(MFD_ALL_FLAGS | 302 (MFD_HUGE_MASK << MFD_HUGE_SHIFT))) 303 return -EINVAL; 304 } 305 306 /* Invalid if both EXEC and NOEXEC_SEAL are set.*/ 307 if ((flags & MFD_EXEC) && (flags & MFD_NOEXEC_SEAL)) 308 return -EINVAL; 309 310 if (!(flags & (MFD_EXEC | MFD_NOEXEC_SEAL))) { > 311 if (sysctl == MEMFD_NOEXEC_SCOPE_NOEXEC_SEAL) 312 flags |= MFD_NOEXEC_SEAL; 313 else 314 flags |= MFD_EXEC; 315 316 pr_warn_once( 317 "memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=%d '%s'\n", 318 task_pid_nr(current), get_task_comm(comm, current)); 319 } 320 > 321 if (flags & MFD_EXEC && sysctl >= MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED) { -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki