audit: get comm using lock to avoid race in string printing
When task->comm is passed directly to audit_log_untrustedstring() without getting a copy or using the task_lock, there is a race that could happen that would output a NULL (\0) in the output string that would effectively truncate the rest of the report text after the comm= field in the audit, losing fields. Use get_task_comm() to get a copy while acquiring the task_lock to prevent this and to prevent the result from being a mixture of old and new values of comm. Signed-off-by:Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by:
Richard Guy Briggs <rgb@redhat.com>
parent
f874738e
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