From: Marc Zyngier <marc.zyngier@arm.com>
Date: Thu, 16 Nov 2017 17:58:18 +0000
Subject: KVM: arm/arm64: vgic-its: Check result of allocation before use
Patch-mainline: v4.15-rc3
Git-commit: 686f294f2f1ae40705283dd413ca1e4c14f20f93
References: bsc#1077761
We miss a test against NULL after allocation.
Fixes: 6d03a68f8054 ("KVM: arm64: vgic-its: Turn device_id validation into generic ID validation")
Cc: stable@vger.kernel.org # 4.8
Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Alexander Graf <agraf@suse.de>
---
virt/kvm/arm/vgic/vgic-its.c | 2 ++
1 file changed, 2 insertions(+)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -821,6 +821,8 @@
return E_ITS_MAPC_COLLECTION_OOR;
collection = kzalloc(sizeof(*collection), GFP_KERNEL);
+ if (!collection)
+ return -ENOMEM;
collection->collection_id = coll_id;
collection->target_addr = COLLECTION_NOT_MAPPED;