On 10/13/22 11:01, David Hildenbrand wrote:
On 13.10.22 18:54, Vlastimil Babka wrote:
Hi,
I've been trying the hmm_tests as of today's commit:
a185a0995518 ("Merge tag 'linux-kselftest-kunit-6.1-rc1-2' ...)
and run into several issues that seemed worth reporting.
First, it seems the FIXTURE_TEARDOWN(hmm) in tools/testing/selftests/vm/hmm-tests.c using ASSERT_EQ(ret, 0); can run into an infinite loop of reporting the assertion failure. Dunno if it's a kselftests issue or it's a bug to use asserts in teardown. I hacked it up like this locally to proceed:
--- a/tools/testing/selftests/vm/hmm-tests.c +++ b/tools/testing/selftests/vm/hmm-tests.c @@ -154,6 +154,11 @@ FIXTURE_TEARDOWN(hmm) { int ret = close(self->fd); + if (ret != 0) { + fprintf(stderr, "close returned (%d) fd is (%d)\n", ret,self->fd); + exit(1); + }
ASSERT_EQ(ret, 0); self->fd = -1; }
Next, there are some tests that fail (and thus also trigger the issue above)
# RUN hmm.hmm_device_private.exclusive ... # hmm-tests.c:1702:exclusive:Expected ret (-16) == 0 (0) close returned (-1) fd is (3) # exclusive: Test failed at step #1 # FAIL hmm.hmm_device_private.exclusive not ok 20 hmm.hmm_device_private.exclusive # RUN hmm.hmm_device_private.exclusive_mprotect ... # hmm-tests.c:1756:exclusive_mprotect:Expected ret (-16) == 0 (0) close returned (-1) fd is (3) # exclusive_mprotect: Test failed at step #1 # FAIL hmm.hmm_device_private.exclusive_mprotect not ok 21 hmm.hmm_device_private.exclusive_mprotect # RUN hmm.hmm_device_private.exclusive_cow ... # hmm-tests.c:1809:exclusive_cow:Expected ret (-16) == 0 (0) close returned (-1) fd is (3) # exclusive_cow: Test failed at step #1 # FAIL hmm.hmm_device_private.exclusive_cow not ok 22 hmm.hmm_device_private.exclusive_cow
When did that test start failing? Was it still ok for 6.0?
commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f (tag: v6.0, linux/master)
# FAILED: 25 / 50 tests passed. # Totals: pass:25 fail:25 xfail:0 xpass:0 skip:0 error:0
Looks good to me.
Possible change in 6.1 and we have to time fix them all. :)
thanks, -- Shuah