From: Dave Martin Date: Thu, 6 Jun 2019 10:58:07 +0000 (+0100) Subject: KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7a00b9c2f800245f076c4fb969c175ec28ad2d6d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy [ 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 Fixes: 1085fdc68c60 ("KVM: arm64: vgic-its: Introduce new KVM ITS device") Signed-off-by: Dave Martin Signed-off-by: Marc Zyngier Signed-off-by: Sasha Levin --- 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,