Re: [PATCH] IMA: policy can be updated zero times

From: Sasha Levin
Date: Tue Dec 22 2015 - 16:50:50 EST


On 12/22/2015 04:40 PM, Petko Manolov wrote:
>> Thanks, Sasha. By the time ima_update_policy() is called
>> >ima_release_policy() has already output the policy update status
>> >message. I guess an empty policy could be considered a valid policy.
>> >Could you add a msg indicating that the new policy was empty?
>
> As far as I can say we can't get to ima_update_policy() with empty ima_temp_rules because ima_write_policy() will set valid_policy to 0 in case of an empty rule. I'll double check it tomorrow, but please you do that too.

This is based on an actual crash rather than code analysis.


Thanks,
Sasha
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