diff options
Diffstat (limited to 'tools/testing/selftests/arm64/mte')
| -rw-r--r-- | tools/testing/selftests/arm64/mte/check_user_mem.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/tools/testing/selftests/arm64/mte/check_user_mem.c b/tools/testing/selftests/arm64/mte/check_user_mem.c index 1de7a0abd0ae..5a5a7e1f5789 100644 --- a/tools/testing/selftests/arm64/mte/check_user_mem.c +++ b/tools/testing/selftests/arm64/mte/check_user_mem.c @@ -19,7 +19,8 @@ static size_t page_sz; -static int check_usermem_access_fault(int mem_type, int mode, int mapping) +static int check_usermem_access_fault(int mem_type, int mode, int mapping, + int tag_offset, int tag_len) { int fd, i, err; char val = 'A'; @@ -54,10 +55,12 @@ static int check_usermem_access_fault(int mem_type, int mode, int mapping) if (i < len) goto usermem_acc_err; - /* Tag the next half of memory with different value */ - ptr_next = (void *)((unsigned long)ptr + page_sz); + if (!tag_len) + tag_len = len - tag_offset; + /* Tag a part of memory with different value */ + ptr_next = (void *)((unsigned long)ptr + tag_offset); ptr_next = mte_insert_new_tag(ptr_next); - mte_set_tag_address_range(ptr_next, page_sz); + mte_set_tag_address_range(ptr_next, tag_len); lseek(fd, 0, 0); /* Copy from file into buffer with invalid tag */ @@ -100,14 +103,14 @@ int main(int argc, char *argv[]) /* Set test plan */ ksft_set_plan(4); - evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE), + evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE, page_sz, 0), "Check memory access from kernel in sync mode, private mapping and mmap memory\n"); - evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED), + evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED, page_sz, 0), "Check memory access from kernel in sync mode, shared mapping and mmap memory\n"); - evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_ASYNC_ERR, MAP_PRIVATE), + evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_ASYNC_ERR, MAP_PRIVATE, page_sz, 0), "Check memory access from kernel in async mode, private mapping and mmap memory\n"); - evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_ASYNC_ERR, MAP_SHARED), + evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_ASYNC_ERR, MAP_SHARED, page_sz, 0), "Check memory access from kernel in async mode, shared mapping and mmap memory\n"); mte_restore_setup(); |