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KVM: correct null pid check in kvm_vcpu_yield_to() 

Correct a simple mistake of checking the wrong variable
before a dereference, resulting in the dereference not being
properly protected by rcu_dereference().

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sam Bobroff 2014-09-19 09:40:41 +10:00 committed by Paolo Bonzini
parent 85c8555ff0
commit 27fbe64bfa
1 changed files with 1 additions and 1 deletions
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2
virt/kvm/kvm_main.c
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@ -1725,7 +1725,7 @@ int kvm_vcpu_yield_to(struct kvm_vcpu *target)
rcu_read_lock();
pid = rcu_dereference(target->pid);
if (pid)
task = get_pid_task(target->pid, PIDTYPE_PID);
task = get_pid_task(pid, PIDTYPE_PID);
rcu_read_unlock();
if (!task)
return ret;