Re: [PATCH 0/2] kvm: fix kmalloc bug in kvm_arch_prepare_memory_region on 5.10 stable kernel

On Fri, Jan 26, 2024 at 07:04:51PM +0100, Paolo Bonzini wrote:

On Fri, Jan 26, 2024 at 11:01 AM oficerovas@altlinux.org wrote:

...

From: Alexander Ofitserov oficerovas@altlinux.org

Syzkaller hit 'WARNING: kmalloc bug in kvm_arch_prepare_memory_region' bug.

This bug is not a vulnerability and is reproduced only when running with root privileges for stable 5.10 kernel.

Bug fixed by backported commits in next two patches. [PATCH 1/2] mm: vmalloc: introduce array allocation functions [PATCH 2/2] KVM: use __vcalloc for very large allocations

Acked-by: Paolo Bonzini pbonzini@redhat.com

Thanks for the review, both now queued up.

greg k-h