RHEL5: kernel crash with rpciod in rpc_wake_up_next called from xprt_autoclose during high volume NFSv3 traffic
Issue
- System crashes with kernel panic during periods of high volume NFSv3 read/write activity.
- Kernel crashes with rpciod in a backtrace similar to
PID: 2160 TASK: ffff8103ffa7b0c0 CPU: 1 COMMAND: "rpciod/1"
...
[exception RIP: rpc_wake_up_next+109]
...
#4 [ffff8103fb493e08] xprt_release_xprt at ffffffff88348f75
#5 [ffff8103fb493e18] xprt_autoclose at ffffffff883499fe
#6 [ffff8103fb493e38] run_workqueue at ffffffff8004d139
#7 [ffff8103fb493e78] worker_thread at ffffffff80049aaa
#8 [ffff8103fb493ee8] kthread at ffffffff80032360
Environment
- Red Hat Enterprise Linux 5 (NFS client)
- all kernels prior to 2.6.18-238.el5 may be affected
- seen on 2.6.18-128.el5 and 2.6.18-194.17.4.el5
- Seen with NFSv3
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