Hi Sandy, [auto build test ERROR on: char-misc/char-misc-testing] [also build test ERROR on: v4.3 next-20151106] url: https://github.com/0day-ci/linux/commits/Sandy-Harris/A-couple-of-generated-files/20151107-223540 config: sh-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=sh All errors (new ones prefixed by >>): >> scripts/gen_random.c:61:19: fatal error: stdio.h: No such file or directory compilation terminated. make[2]: *** [scripts/gen_random] Error 1 <stdin>:1229:2: warning: #warning syscall sched_setattr not implemented [-Wcpp] <stdin>:1232:2: warning: #warning syscall sched_getattr not implemented [-Wcpp] <stdin>:1235:2: warning: #warning syscall renameat2 not implemented [-Wcpp] <stdin>:1238:2: warning: #warning syscall seccomp not implemented [-Wcpp] <stdin>:1241:2: warning: #warning syscall getrandom not implemented [-Wcpp] <stdin>:1244:2: warning: #warning syscall memfd_create not implemented [-Wcpp] <stdin>:1247:2: warning: #warning syscall bpf not implemented [-Wcpp] <stdin>:1250:2: warning: #warning syscall execveat not implemented [-Wcpp] <stdin>:1298:2: warning: #warning syscall userfaultfd not implemented [-Wcpp] <stdin>:1301:2: warning: #warning syscall membarrier not implemented [-Wcpp] make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +61 scripts/gen_random.c 06038f35 Sandy Harris 2015-11-07 45 * This is certainly done early enough and the data is random 06038f35 Sandy Harris 2015-11-07 46 * enough, but it is not necessarily secret enough. 06038f35 Sandy Harris 2015-11-07 47 * 06038f35 Sandy Harris 2015-11-07 48 * In some cases -- for example, a firewall machine that compiles 06038f35 Sandy Harris 2015-11-07 49 * its own kernel -- this alone might be enough to ensure secure 06038f35 Sandy Harris 2015-11-07 50 * initialisation, since only an enemy who already has root could 06038f35 Sandy Harris 2015-11-07 51 * discover this data. Of course even in those cases it should not 06038f35 Sandy Harris 2015-11-07 52 * be used alone, only as one layer of a defense in depth. 06038f35 Sandy Harris 2015-11-07 53 * 06038f35 Sandy Harris 2015-11-07 54 * In other cases -- a kernel that is compiled once then used in 06038f35 Sandy Harris 2015-11-07 55 * a Linux distro or installed on many devices -- this is likely 06038f35 Sandy Harris 2015-11-07 56 * of very little value. It complicates an attack somewhat, but 06038f35 Sandy Harris 2015-11-07 57 * it clearly will not stop a serious attacker and may not even 06038f35 Sandy Harris 2015-11-07 58 * slow them down much. 06038f35 Sandy Harris 2015-11-07 59 */ 06038f35 Sandy Harris 2015-11-07 60 06038f35 Sandy Harris 2015-11-07 @61 #include <stdio.h> 06038f35 Sandy Harris 2015-11-07 62 #include <stdlib.h> 06038f35 Sandy Harris 2015-11-07 63 #include <unistd.h> 06038f35 Sandy Harris 2015-11-07 64 #include <fcntl.h> 06038f35 Sandy Harris 2015-11-07 65 #include <stdint.h> 06038f35 Sandy Harris 2015-11-07 66 #include <ctype.h> 06038f35 Sandy Harris 2015-11-07 67 06038f35 Sandy Harris 2015-11-07 68 /* 06038f35 Sandy Harris 2015-11-07 69 * Configuration information :::::: The code at line 61 was first introduced by commit :::::: 06038f35641185897feb14917d89d03fab1710ba Produces generated/random_init.h for random driver :::::: TO: Sandy Harris <sandyinchina@xxxxxxxxx> :::::: CC: 0day robot <fengguang.wu@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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