in case kvm_vgic_map_resources() fails, typically if the vgic distributor is not defined, __kvm_vgic_destroy will be called several times. Indeed kvm_vgic_map_resources() is called on first vcpu run. As a result dist->spis is freeed more than once and on the second time it causes a "kernel BUG at mm/slub.c:3912!" Set dist->spis to NULL to avoid the crash. Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx> --- virt/kvm/arm/vgic/vgic-init.c | 1 + 1 file changed, 1 insertion(+) diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index 743ca5c..3349f2b 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -325,6 +325,7 @@ static void kvm_vgic_dist_destroy(struct kvm *kvm) dist->initialized = false; kfree(dist->spis); + dist->spis = NULL; dist->nr_spis = 0; if (vgic_supports_direct_msis(kvm)) -- 2.5.5 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
