Messages in this thread | | | Date | Sat, 26 Aug 2023 18:46:14 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH 6.1] KVM: x86/mmu: Fix an sign-extension bug with mmu_seq that hangs vCPUs |
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On Thu, Aug 24, 2023 at 04:46:44PM +0200, Greg Kroah-Hartman wrote: > On Thu, Aug 24, 2023 at 06:46:59AM -0700, Sean Christopherson wrote: > > On Thu, Aug 24, 2023, Greg Kroah-Hartman wrote: > > > On Wed, Aug 23, 2023 at 06:01:04PM -0700, Sean Christopherson wrote: > > > > Note, upstream commit ba6e3fe25543 ("KVM: x86/mmu: Grab mmu_invalidate_seq > > > > in kvm_faultin_pfn()") unknowingly fixed the bug in v6.3 when refactoring > > > > how KVM tracks the sequence counter snapshot. > > > > > > > > Reported-by: Brian Rak <brak@vultr.com> > > > > Reported-by: Amaan Cheval <amaan.cheval@gmail.com> > > > > Reported-by: Eric Wheeler <kvm@lists.ewheeler.net> > > > > Closes: https://lore.kernel.org/all/f023d927-52aa-7e08-2ee5-59a2fbc65953@gameservers.com > > > > Fixes: a955cad84cda ("KVM: x86/mmu: Retry page fault if root is invalidated by memslot update") > > > > Signed-off-by: Sean Christopherson <seanjc@google.com> > > > > > > What is the git commit id of this change in Linus's tree? > > > > There is none. Commit ba6e3fe25543 (landed in v6.3) unknowingly fixed the bug as > > part of a completely unrelated refactoring. > > Ah, missed that in the text here, thanks!
Now queued up, thanks.
greg k-h
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