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1b09d9df3d
Occationally the kernel nfsd threads would not terminate when a SIGKILL was posted for the kernel process (called nfsd (slave)). When this occurred, the thread associated with the process (called "ismaster") had returned from svc_run_internal() and was sleeping waiting for the other threads to terminate. The other threads (created by kthread_start()) were still in svc_run_internal() handling NFS RPCs. The only way this could occur is for the "ismaster" thread to return from svc_run_internal() without having called svc_exit(). There was only one place in the code where this could happen and this patch stops that from happening. Since the problem is intermittent, I cannot be sure if this has fixed the problem, but I have not seen an occurrence of the problem with this patch applied. Reviewed by: kib MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D16087 |
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