Hi Igor, Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master] [also build test ERROR on v4.15] [cannot apply to next-20180201] [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/20180202-123437 config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 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=xtensa All error/warnings (new ones prefixed by >>): mm/pmalloc-selftest.c: In function 'pmalloc_selftest': >> mm/pmalloc-selftest.c:43:14: error: implicit declaration of function >> 'vmalloc'; did you mean 'kvmalloc'? [-Werror=implicit-function-declaration] var_vmall = vmalloc(SIZE_2); ^~~~~~~ kvmalloc >> mm/pmalloc-selftest.c:43:12: warning: assignment makes pointer from integer >> without a cast [-Wint-conversion] var_vmall = vmalloc(SIZE_2); ^ >> mm/pmalloc-selftest.c:52:2: 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 +43 mm/pmalloc-selftest.c 19 20 #define validate_alloc(expected, variable, size) \ 21 pr_notice("must be " expected ": %s", \ 22 is_pmalloc_object(variable, size) > 0 ? "ok" : "no") 23 24 #define is_alloc_ok(variable, size) \ 25 validate_alloc("ok", variable, size) 26 27 #define is_alloc_no(variable, size) \ 28 validate_alloc("no", variable, size) 29 30 void pmalloc_selftest(void) 31 { 32 struct gen_pool *pool_unprot; 33 struct gen_pool *pool_prot; 34 void *var_prot, *var_unprot, *var_vmall; 35 36 pr_notice("pmalloc self-test"); 37 pool_unprot = pmalloc_create_pool("unprotected", 0); 38 pool_prot = pmalloc_create_pool("protected", 0); 39 BUG_ON(!(pool_unprot && pool_prot)); 40 41 var_unprot = pmalloc(pool_unprot, SIZE_1 - 1, GFP_KERNEL); 42 var_prot = pmalloc(pool_prot, SIZE_1, GFP_KERNEL); > 43 var_vmall = vmalloc(SIZE_2); 44 is_alloc_ok(var_unprot, 10); 45 is_alloc_ok(var_unprot, SIZE_1); 46 is_alloc_ok(var_unprot, PAGE_SIZE); 47 is_alloc_no(var_unprot, SIZE_1 + 1); 48 is_alloc_no(var_vmall, 10); 49 50 51 pfree(pool_unprot, var_unprot); > 52 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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