From: Dave Martin Dave.Martin@arm.com
[ Upstream commit 4729ec8c1e1145234aeeebad5d96d77f4ccbb00a ]
kvm_device->destroy() seems to be supposed to free its kvm_device struct, but vgic_its_destroy() is not currently doing this, resulting in a memory leak, resulting in kmemleak reports such as the following:
unreferenced object 0xffff800aeddfe280 (size 128): comm "qemu-system-aar", pid 13799, jiffies 4299827317 (age 1569.844s) [...] backtrace: [<00000000a08b80e2>] kmem_cache_alloc+0x178/0x208 [<00000000dcad2bd3>] kvm_vm_ioctl+0x350/0xbc0
Fix it.
Cc: Andre Przywara andre.przywara@arm.com Fixes: 1085fdc68c60 ("KVM: arm64: vgic-its: Introduce new KVM ITS device") Signed-off-by: Dave Martin Dave.Martin@arm.com Signed-off-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- virt/kvm/arm/vgic/vgic-its.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index dc06f5e40041..526d808ecbbd 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -1677,6 +1677,7 @@ static void vgic_its_destroy(struct kvm_device *kvm_dev) mutex_unlock(&its->its_lock);
kfree(its); + kfree(kvm_dev);/* alloc by kvm_ioctl_create_device, free by .destroy */ }
int vgic_its_has_attr_regs(struct kvm_device *dev,