[PATCH tip/core/rcu 2/2] powerpc,kvm: Fix unbalanced srcu_read_[un]lock()

["Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>]

From: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>

At the up_out: label in kvmppc_hv_setup_htab_rma(), srcu_read_lock()
is still held.  This commit therefore have to releases it before return.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Cc: Gleb Natapov <gleb@xxxxxxxxxx>
Cc: Alexander Graf <agraf@xxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: kvm-ppc@xxxxxxxxxxxxxxx
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
 arch/powerpc/kvm/book3s_hv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 80dcc53..c26740e 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1799,7 +1799,7 @@ static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu)
 
  up_out:
 	up_read(&current->mm->mmap_sem);
-	goto out;
+	goto out_srcu;
 }
 
 int kvmppc_core_init_vm(struct kvm *kvm)
-- 
1.8.1.5

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