Hi Igor, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20180223] [cannot apply to linus/master mmotm/master char-misc/char-misc-testing v4.16-rc3 v4.16-rc2 v4.16-rc1 v4.16-rc3] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Igor-Stoppa/mm-security-ro-protection-for-dynamic-data/20180302-232215 config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): mm/test_pmalloc.c: In function 'test_pmalloc': >> mm/test_pmalloc.c:52:14: error: implicit declaration of function 'vmalloc'; did you mean 'kvmalloc'? [-Werror=implicit-function-declaration] var_vmall = vmalloc(SIZE_2); ^~~~~~~ kvmalloc mm/test_pmalloc.c:52:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion] var_vmall = vmalloc(SIZE_2); ^ >> mm/test_pmalloc.c:64:2: error: implicit declaration of function 'vfree'; did you mean 'kvfree'? [-Werror=implicit-function-declaration] vfree(var_vmall); ^~~~~ kvfree cc1: some warnings being treated as errors vim +52 mm/test_pmalloc.c 27 28 #define is_alloc_ok(variable, size) \ 29 validate_alloc(true, variable, size) 30 31 #define is_alloc_no(variable, size) \ 32 validate_alloc(false, variable, size) 33 34 void test_pmalloc(void) 35 { 36 struct gen_pool *pool_unprot; 37 struct gen_pool *pool_prot; 38 void *var_prot, *var_unprot, *var_vmall; 39 40 pr_notice("pmalloc-selftest"); 41 pool_unprot = pmalloc_create_pool("unprotected", 0); 42 if (unlikely(!pool_unprot)) 43 goto error; 44 pool_prot = pmalloc_create_pool("protected", 0); 45 if (unlikely(!(pool_prot))) 46 goto error_release; 47 48 pr_notice("Testing allocation capability"); 49 var_unprot = pmalloc(pool_unprot, SIZE_1 - 1, GFP_KERNEL); 50 var_prot = pmalloc(pool_prot, SIZE_1, GFP_KERNEL); 51 *(int *)var_prot = 0; > 52 var_vmall = vmalloc(SIZE_2); 53 54 55 pr_notice("Test correctness of is_pmalloc_object()"); 56 WARN_ON(unlikely(!is_alloc_ok(var_unprot, 10))); 57 WARN_ON(unlikely(!is_alloc_ok(var_unprot, SIZE_1))); 58 WARN_ON(unlikely(!is_alloc_ok(var_unprot, PAGE_SIZE))); 59 WARN_ON(unlikely(!is_alloc_no(var_unprot, SIZE_1 + 1))); 60 WARN_ON(unlikely(!is_alloc_no(var_vmall, 10))); 61 62 63 pfree(pool_unprot, var_unprot); > 64 vfree(var_vmall); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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