vgic_register_all_redist_iodevs may succeed while
vgic_register_all_redist_iodevs fails. For example this can happen
while adding a redistributor region overlapping a dist region. The
failure only is detected on vgic_register_all_redist_iodevs when
vgic_v3_check_base() gets called.
In such a case, remove the newly added redistributor region and free
it.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
arch/arm64/kvm/vgic/vgic-mmio-v3.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/vgic/vgic-mmio-v3.c b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
index 8e8a862def76..581f0f490000 100644
--- a/arch/arm64/kvm/vgic/vgic-mmio-v3.c
+++ b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
@@ -866,8 +866,14 @@ int vgic_v3_set_redist_base(struct kvm *kvm, u32 index, u64 addr, u32 count)
* afterwards will register the iodevs when needed.
*/
ret = vgic_register_all_redist_iodevs(kvm);
- if (ret)
+ if (ret) {
+ struct vgic_redist_region *rdreg =
+ vgic_v3_rdist_region_from_index(kvm, index);
+
+ list_del(&rdreg->list);
+ kfree(rdreg);
return ret;
+ }
return 0;
}
--
2.21.3
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