*** This bug is a duplicate of bug 1322407 ***
https://bugs.launchpad.net/bugs/1322407
we are having the same issue
ubuntu 14.04
Linux version 3.13.0-24-generic
here is the debug from the kworker thread
kworker/3:2-17063 [003] d... 1961298.739136: workqueue_queue_work: work
struct=ffff880231a805e0 function=xs_tcp_setup_socket [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
kworker/3:2-17063 [003] d.s. 1961298.739140: workqueue_queue_work: work
struct=ffff880020fdc888 function=rpc_async_schedule [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
kworker/3:2-17063 [003] d... 1961298.739141: workqueue_queue_work: work
struct=ffff880231a805e0 function=xs_tcp_setup_socket [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
kworker/3:2-17063 [003] d.s. 1961298.739146: workqueue_queue_work: work
struct=ffff880020fdc888 function=rpc_async_schedule [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
kworker/3:2-17063 [003] d... 1961298.739146: workqueue_queue_work: work
struct=ffff880231a805e0 function=xs_tcp_setup_socket [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
kworker/3:2-17063 [003] d.s. 1961298.739151: workqueue_queue_work: work
struct=ffff880020fdc888 function=rpc_async_schedule [sunrpc]
workqueue=ffff8800ba555e00 req_cpu=256 cpu=3
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https://bugs.launchpad.net/bugs/1322406
Title:
NFS kernel server creates a kworker with 100% CPU usage, then hangs
randomly
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