I've only today discovered a bug in the SunRPC that might cause this
sort of problem.
Basically, the current setup allows an rpc_task to exit while it is
still asleep on a queue. If happens to get woken up by an interrupt
while exiting, then you're liable to corrupt the rpc task queues...
Cheers,
Trond
--- linux-2.2.14/net/sunrpc/sched.c.orig Fri May 7 20:19:11 1999
+++ linux-2.2.14/net/sunrpc/sched.c Tue Feb 1 19:58:39 2000
@@ -413,18 +413,15 @@
}
/*
- * No handler for next step means exit.
- */
- if (!task->tk_action)
- break;
-
- /*
* Perform the next FSM step.
* tk_action may be NULL when the task has been killed
* by someone else.
*/
- if (RPC_IS_RUNNING(task) && task->tk_action)
+ if (RPC_IS_RUNNING(task)) {
+ if (!task->tk_action)
+ break;
task->tk_action(task);
+ }
/*
* Check whether task is sleeping.
-
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