Currently, two testcases in rdma-core fail with the latest kernel, leaving the console log below. ===== $ ./build/bin/run_tests.py -k device ssssssss....FF........s ====================================================================== FAIL: test_query_device (tests.test_device.DeviceTest.test_query_device) Test ibv_query_device() ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/ubuntu/rdma-core/tests/test_device.py", line 63, in test_query_device self.verify_device_attr(attr, dev) File "/home/ubuntu/rdma-core/tests/test_device.py", line 200, in verify_device_attr assert attr.sys_image_guid != 0 ^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError ====================================================================== FAIL: test_query_device_ex (tests.test_device.DeviceTest.test_query_device_ex) Test ibv_query_device_ex() ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/ubuntu/rdma-core/tests/test_device.py", line 222, in test_query_device_ex self.verify_device_attr(attr_ex.orig_attr, dev) File "/home/ubuntu/rdma-core/tests/test_device.py", line 200, in verify_device_attr assert attr.sys_image_guid != 0 ^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError ---------------------------------------------------------------------- Ran 23 tests in 0.007s FAILED (failures=2, skipped=9) ===== It seems sys_image_guid is set here: https://github.com/torvalds/linux/blob/2ac5415022d16d63d912a39a06f32f1f51140261/drivers/infiniband/sw/rxe/rxe.c#L82 I tried rolling back to commit 57a7138d0627, just before this patch was applied, and found the error resolved. [PATCH 1/1] RDMA/rxe: Remove the direct link to net_device https://lore.kernel.org/all/20241220222325.2487767-1-yanjun.zhu@xxxxxxxxx/ I think the root cause lies in ndev patches applied in the past two months, but I am not very sure if it is good idea to revert them. I would like opinions from Zhu and other developers. Thanks, Daisuke Matsuda