[PATCH 1/9] powerpc,kvm: fix imbalance srcu_read_[un]lock()

From: Lai Jiangshan
Date: Fri Mar 15 2013 - 12:51:27 EST


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
---
arch/powerpc/kvm/book3s_hv.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

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)
--
1.7.4.4

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