RHEL8: Soft-lockups being caused on nfs.mount processes due to receiving the NFS4ERR_DELAY (10008) response and attempt to kill mount with signal
Issue
- The system is getting stuck with soft-lockups on the nfs.mount service only
- NFS mount gets stuck and after some amount of time, the system will start showing soft lockups, and eventually, it will lock up completely.
Environment
- Red Hat Enterprise Linux 8
- All kernels up to 4.18.0-193.el8
- NFS4 client
- Multiple mount processes waiting for responses from the NFS server, one mount process gets killed with a signal.
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