Hi, this looks to be a legit bug in how the linux-kvm kernel is derived
from the generic kernel. Examining the annotations file in the linux-kvm
master-next tree:

  https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-
kvm/tree/debian.master/config/annotations?h=master-next#n9480

we can see that CONFIG_DEFAULT_MMAP_MIN_ADDR is supposed to be set to
65536 for amd64, etc. However, the generated config for the linux-kvm
kernel contains CONFIG_DEFAULT_MMAP_MIN_ADDR=4096:

  https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-
kvm/tree/debian.kvm/config/config.common.ubuntu?h=master-next#n532

So something has gone wrong in generating the linux-kvm kernel.

Thanks.

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https://bugs.launchpad.net/bugs/1760650

Title:
  test_074_config_security_default_mmap_min_addr in kernel security test
  failed with 4.4/4.15 kvm

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