[PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-08-27
[PATCH v2 1/3] vhost_task: Don't wake KVM x86's recovery thread if vhost task was killed · Sean Christopherson <seanjc@google.com> · 2025-08-27
[PATCH v2 2/3] vhost_task: Allow caller to omit handle_sigkill() callback · Sean Christopherson <seanjc@google.com> · 2025-08-27
[PATCH v2 3/3] KVM: x86/mmu: Don't register a sigkill callback for NX hugepage recovery tasks · Sean Christopherson <seanjc@google.com> · 2025-08-27
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2025-08-27
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-08-28
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2025-08-28
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-15
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Lei Yang <hidden> · 2025-08-28
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-09-18
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-18
[PATCH] vhost: Take a reference on the task that is reference in struct vhost_task. · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2025-09-18
Re: [PATCH] vhost: Take a reference on the task that is reference in struct vhost_task. · Sean Christopherson <seanjc@google.com> · 2025-09-19
Re: [PATCH] vhost: Take a reference on the task that is reference in struct vhost_task. · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-21
Re: [PATCH] vhost: Take a reference on the task that is reference in struct vhost_task. · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-21
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-09-15
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · "Michael S. Tsirkin" <mst@redhat.com> · 2025-09-15
Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task · Sean Christopherson <seanjc@google.com> · 2025-09-15

Re: [PATCH v2 0/3] vhost_task: Fix a bug where KVM wakes an exited task

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2025-08-28 06:48:44
Also in: kvm, lkml, virtualization

On 2025-08-27 17:16:35 [-0700], Sean Christopherson wrote:

Nice!  This fixes things too.  Either solution works for me.  Or maybe do both?
Attempting to wake a task that vhost_task knows has exited (is exiting?) is a
bit gross, but even with that hardening, guarding against UAF is very nice to
have too.

I don't mind either way.
If this is requested I can submit a proper patch.

Tested-by: Sean Christopherson <seanjc@google.com>

Sebastian

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