RHEL5.5 or below: rpciod panic at run_workqueue+0x4b/0xb5 or panic in __list_add from queue_work

Issue

• Kernel panic with rcpiod oops in run_workqueue called from worker_thread with oops similar to

BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004

• Kernel crashes in __list_add called from a backtrace similar to nfs_lock -> ... nlmclnt_proc -> ... rpc_ping -> ... rpc_getport -> ... queue_work and oops message similar to

list_add corruption. prev->next should be e7c1254c, but was 00000000
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kernel BUG at lib/list_debug.c:31!

• Kernel crashes in __list_add called from a backtrace coming from xs_tcp_state_change -> ... -> rpc_wake_up -> __rpc_wake_up_task -> ... -> queue_work -> __queue_work and oops message similar to

list_add corruption. prev->next should be ffff81013e887758, but was 0000000000000000
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Kernel BUG at lib/list_debug.c:31