area_src and area_dst are saved at the beginning of the function if chunk_size > page_size. The intention is quite clearly to restore them at the end based on the same condition, but step_size is considered instead of chunk_size. Considering that step_size is a number of pages, the condition is likely to be false.
Use the same condition as when saving so that the globals are restored as intended.
Fixes: a2bf6a9ca805 ("selftests/mm: add UFFDIO_MOVE ioctl test") Signed-off-by: Kevin Brodsky kevin.brodsky@arm.com --- tools/testing/selftests/mm/uffd-unit-tests.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c index a2e71b1636e7..74c884713bf7 100644 --- a/tools/testing/selftests/mm/uffd-unit-tests.c +++ b/tools/testing/selftests/mm/uffd-unit-tests.c @@ -1190,7 +1190,7 @@ uffd_move_test_common(uffd_test_args_t *targs, unsigned long chunk_size, nr, count, count_verify[src_offs + nr + i]); } } - if (step_size > page_size) { + if (chunk_size > page_size) { area_src = orig_area_src; area_dst = orig_area_dst; }