audit_alloc: clear TIF_SYSCALL_AUDIT if !audit_context
If audit_filter_task() nacks the new thread it makes sense to clear TIF_SYSCALL_AUDIT which can be copied from parent by dup_task_struct(). A wrong TIF_SYSCALL_AUDIT is not really bad but it triggers the "slow" audit paths in entry.S to ensure the task can not miss audit_syscall_*() calls, this is pointless if the task has no ->audit_context. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Steve Grubb <sgrubb@redhat.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
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@ -943,8 +943,10 @@ int audit_alloc(struct task_struct *tsk)
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return 0; /* Return if not auditing. */
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state = audit_filter_task(tsk, &key);
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if (state == AUDIT_DISABLED)
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if (state == AUDIT_DISABLED) {
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clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT);
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return 0;
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}
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if (!(context = audit_alloc_context(state))) {
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kfree(key);
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