From: Ram Pai <linux...@us.ibm.com> alloc_random_pkey() was allocating the same pkey every time. Not all pkeys were geting tested. This fixes it.
cc: Dave Hansen <dave.han...@intel.com> cc: Florian Weimer <fwei...@redhat.com> Signed-off-by: Ram Pai <linux...@us.ibm.com> Acked-by: Dave Hansen <dave.han...@intel.com> Signed-off-by: Sandipan Das <sandi...@linux.ibm.com> --- tools/testing/selftests/vm/protection_keys.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index fbee0b061851..d3c13283bbd0 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -24,6 +24,7 @@ #define _GNU_SOURCE #include <errno.h> #include <linux/futex.h> +#include <time.h> #include <sys/time.h> #include <sys/syscall.h> #include <string.h> @@ -545,10 +546,10 @@ int alloc_random_pkey(void) int nr_alloced = 0; int random_index; memset(alloced_pkeys, 0, sizeof(alloced_pkeys)); + srand((unsigned int)time(NULL)); /* allocate every possible key and make a note of which ones we got */ max_nr_pkey_allocs = NR_PKEYS; - max_nr_pkey_allocs = 1; for (i = 0; i < max_nr_pkey_allocs; i++) { int new_pkey = alloc_pkey(); if (new_pkey < 0) -- 2.17.1