[LU-16850] socklnd: ksocknal_shutdown() ASSERTION( net->ksnn_interface.ksni_nroutes == 0 ) failed

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Labels: lnet socklnd
• Severity: 3
• Assignee: Serguei Smirnov
• Reporter: Serguei Smirnov

Description

This showed up in Janitor testing for LU-16709 patch, https://review.whamcloud.com/50530/

The sanity-lnet test introduced in that patch causes Janitor to run tests on that specific test ~20 times exercising the touched test only. All of these runs failed on the same assert.

Running the same test as part of full sanity-lnet suite execution doesn't trigger the assertion failure. Local testing also failed to reproduce the issue.

The assertion implies incomplete clean-up of socklnd peer on NI shutdown or, less likely, memory corruption.

It needs to be determined whether the issue causing the assertion to fail is introduced by LNet code changes LU-16709 patch or only discovered by the test changes introduced in the same patch.