linux

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Lakshmi Ramasubramanian 5b3014b952 IMA: Defined delayed workqueue to free the queued keys

Keys queued for measurement should be freed if a custom IMA policy
was not loaded.  Otherwise, the keys will remain queued forever
consuming kernel memory.

This patch defines a delayed workqueue to handle the above scenario.
The workqueue handler is setup to execute 5 minutes after IMA
initialization is completed.

If a custom IMA policy is loaded before the workqueue handler is
scheduled to execute, the workqueue task is cancelled and any queued keys
are processed for measurement.  But if a custom policy was not loaded then
the queued keys are just freed when the delayed workqueue handler is run.

Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Reported-by: kernel test robot <rong.a.chen@intel.com> # sleeping
function called from invalid context
Reported-by: kbuild test robot <lkp@intel.com> # redefinition of
ima_init_key_queue() function.
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

2020-01-23 07:37:31 -05:00

apparmor

+ Features

2019-12-03 12:51:35 -08:00

integrity

IMA: Defined delayed workqueue to free the queued keys

2020-01-23 07:37:31 -05:00

keys

KEYS: Call the IMA hook to measure keys

2019-12-12 08:53:50 -05:00

loadpin

proc/sysctl: add shared variables for range check