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KVM: use __vcalloc for very large allocations
authorPaolo Bonzini <pbonzini@redhat.com>
Tue, 8 Mar 2022 09:49:37 +0000 (04:49 -0500)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 8 Mar 2022 14:30:57 +0000 (09:30 -0500)
commit37b2a6510a48ca361ced679f92682b7b7d7d0330
treefb2d48b31b583fff946d7472ecfb8d89ad70f7fetree
parent3000f2e2fc855664c28d3e6a47e0373737974eb4commit | diff
KVM: use __vcalloc for very large allocations

Allocations whose size is related to the memslot size can be arbitrarily
large.  Do not use kvzalloc/kvcalloc, as those are limited to "not crazy"
sizes that fit in 32 bits.

Cc: stable@vger.kernel.org
Fixes: 7661809d493b ("mm: don't allow oversized kvmalloc() calls")
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/powerpc/kvm/book3s_hv_uvmem.c diff | blob | history
arch/x86/kvm/mmu/page_track.c diff | blob | history
arch/x86/kvm/x86.c diff | blob | history
virt/kvm/kvm_main.c diff | blob | history
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