* 2a23a4e1159c to 6.12
@ 2025-08-19 22:00 Alistair Delva
2025-08-22 6:32 ` Greg Kroah-Hartman
0 siblings, 1 reply; 4+ messages in thread
From: Alistair Delva @ 2025-08-19 22:00 UTC (permalink / raw)
To: Greg Kroah-Hartman, Sasha Levin
Cc: Elie Kheirallah, Frederick Mayle, Cody Schuffelen,
Cc: Android Kernel, Linux Stable maillist
Dear stable maintainers,
Please consider cherry-picking 2a23a4e1159c ("kvm:
retrynx_huge_page_recovery_thread creation") to 6.12. It fixes
a problem where some VMMs (crosvm, firecracker, others) may
unnecessarily terminate a VM when -ENOMEM is returned to
userspace for a non-fatal condition.
Report of the change's success on 6.12 and first request:
https://lore.kernel.org/all/aBOPWGPTCgnUgtw-@CMGLRV3/
Example downstream bug report from libkrun:
https://github.com/containers/libkrun/issues/314
We are seeing this same flaky behavior at scale on infra
machines running 6.12.38 from Debian bpo.
Thanks!
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: 2a23a4e1159c to 6.12
2025-08-19 22:00 2a23a4e1159c to 6.12 Alistair Delva
@ 2025-08-22 6:32 ` Greg Kroah-Hartman
2025-08-22 15:35 ` 916b7f42b3b3 to 6.12 (was Re: 2a23a4e1159c to 6.12) Alistair Delva
0 siblings, 1 reply; 4+ messages in thread
From: Greg Kroah-Hartman @ 2025-08-22 6:32 UTC (permalink / raw)
To: Alistair Delva
Cc: Sasha Levin, Elie Kheirallah, Frederick Mayle, Cody Schuffelen,
Cc: Android Kernel, Linux Stable maillist
On Tue, Aug 19, 2025 at 03:00:25PM -0700, Alistair Delva wrote:
> Dear stable maintainers,
>
> Please consider cherry-picking 2a23a4e1159c ("kvm:
> retrynx_huge_page_recovery_thread creation") to 6.12. It fixes
> a problem where some VMMs (crosvm, firecracker, others) may
> unnecessarily terminate a VM when -ENOMEM is returned to
> userspace for a non-fatal condition.
That is not a valid commit in Linus's tree, are you sure it is correct?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 4+ messages in thread* 916b7f42b3b3 to 6.12 (was Re: 2a23a4e1159c to 6.12)
2025-08-22 6:32 ` Greg Kroah-Hartman
@ 2025-08-22 15:35 ` Alistair Delva
2025-08-22 15:51 ` Greg Kroah-Hartman
0 siblings, 1 reply; 4+ messages in thread
From: Alistair Delva @ 2025-08-22 15:35 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Sasha Levin, Elie Kheirallah, Frederick Mayle, Cody Schuffelen,
Cc: Android Kernel, Linux Stable maillist
On Thu, Aug 21, 2025 at 11:32 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Tue, Aug 19, 2025 at 03:00:25PM -0700, Alistair Delva wrote:
> > Dear stable maintainers,
> >
> > Please consider cherry-picking 2a23a4e1159c ("kvm:
> > retrynx_huge_page_recovery_thread creation") to 6.12. It fixes
> > a problem where some VMMs (crosvm, firecracker, others) may
> > unnecessarily terminate a VM when -ENOMEM is returned to
> > userspace for a non-fatal condition.
>
> That is not a valid commit in Linus's tree, are you sure it is correct?
Sorry, the commit is actually 916b7f42b3b3.
> thanks,
>
> greg k-h
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: 916b7f42b3b3 to 6.12 (was Re: 2a23a4e1159c to 6.12)
2025-08-22 15:35 ` 916b7f42b3b3 to 6.12 (was Re: 2a23a4e1159c to 6.12) Alistair Delva
@ 2025-08-22 15:51 ` Greg Kroah-Hartman
0 siblings, 0 replies; 4+ messages in thread
From: Greg Kroah-Hartman @ 2025-08-22 15:51 UTC (permalink / raw)
To: Alistair Delva
Cc: Sasha Levin, Elie Kheirallah, Frederick Mayle, Cody Schuffelen,
Cc: Android Kernel, Linux Stable maillist
On Fri, Aug 22, 2025 at 08:35:07AM -0700, Alistair Delva wrote:
> On Thu, Aug 21, 2025 at 11:32 PM Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > On Tue, Aug 19, 2025 at 03:00:25PM -0700, Alistair Delva wrote:
> > > Dear stable maintainers,
> > >
> > > Please consider cherry-picking 2a23a4e1159c ("kvm:
> > > retrynx_huge_page_recovery_thread creation") to 6.12. It fixes
> > > a problem where some VMMs (crosvm, firecracker, others) may
> > > unnecessarily terminate a VM when -ENOMEM is returned to
> > > userspace for a non-fatal condition.
> >
> > That is not a valid commit in Linus's tree, are you sure it is correct?
>
> Sorry, the commit is actually 916b7f42b3b3.
Much better, now queued up.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2025-08-22 15:51 UTC | newest]
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2025-08-19 22:00 2a23a4e1159c to 6.12 Alistair Delva
2025-08-22 6:32 ` Greg Kroah-Hartman
2025-08-22 15:35 ` 916b7f42b3b3 to 6.12 (was Re: 2a23a4e1159c to 6.12) Alistair Delva
2025-08-22 15:51 ` Greg Kroah-Hartman
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