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Bug
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Resolution: Cannot Reproduce
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Minor
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None
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None
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None
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3
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9223372036854775807
The checking and assgin below could be racy:
if (lu_env_percpu[i].lep_task == current) {
env = lu_env_percpu[i].lep_env;
CPU0
thread0 lu_env_percpu[i].lep_task == current
thread1 switch into CPU0 changes lu_env_percpu[0]
thread0 switch back CPU0,return lu_env_percpu[0].lep_env;
The problem is access and change per_cpu variable here
shall be atomic, since it is per cpu variable, we should
take care it not been preempted.