Found that on c6.metal instances with -c 192, I was seeing panics due to KVM not keeping up with the VMs snapchange spins up.
The problem is that a SIGALRM can be raised while the main thread attempts to do an ioctl with KVM_CREATE_VM, which then returns EINTR and subsequently causes a panic.
Issue #, if available:
Description of changes:
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Found that on c6.metal instances with-c 192, I was seeing panics due to KVM not keeping up with the VMs snapchange spins up.The problem is that a
SIGALRMcan be raised while the main thread attempts to do anioctlwithKVM_CREATE_VM, which then returnsEINTRand subsequently causes a panic.Issue #, if available:
Description of changes:
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.