Specially crafted tests that can reliably trigger this issue will be
added to the test suite.

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  LSM stacking and AppArmor for 6.2: additional fixes

Status in linux package in Ubuntu:
Status in linux source package in Lunar:

Bug description:

  We maintain custom LSM stacking and AppArmor SAUCE patches in our
  kernel to provide additional features that are not available in the
  upstream AppArmor.

  We have experienced occasional bugs in the lunar kernel (specifically
  with the environ.sh test) that can lead to system crashes / failures
  (such as potential NULL pointer dereference).

  [Test case]

  Run AppArmor autopkgtest / qa-regression-testing.


  Apply the following additional fixes provided by AppArmor upstream

    UBUNTU: SAUCE: apparmor: fix policy_compat perms remap for file dfa
    UBUNTU: SAUCE: apparmor: fix profile verification and enable it
    UBUNTU: SAUCE: apparmor: fix: add missing failure check in 
    UBUNTU: SAUCE: apparmor: fix: kzalloc perms tables for shared dfas

  [Regression potential]

  Additional fixes are touching only AppArmor specific code, so we may
  experience regressions (bugs / behavior change) only in apparmor by
  applying them.

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