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

From: Paul E. McKenney
Date: Mon May 20 2013 - 10:53:20 EST

From: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>

At the point of up_out label in kvmppc_hv_setup_htab_rma(),
srcu read lock is still held.

We have to release 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>
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
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 9de24f8..ec4c28a 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1862,7 +1862,7 @@ static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu)

- goto out;
+ goto out_srcu;

int kvmppc_core_init_vm(struct kvm *kvm)

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