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@xxxxxxxxx/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@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306301435.dpXv0GwQ-lkp@xxxxxxxxx/ 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
