You've got:
modcall[authorize]: module "eap" returns noop for request 0 users: Matched entry DEFAULT at line 153 modcall[authorize]: module "files" returns ok for request 0
...and
modcall[authorize]: module "sql" returns ok for request 0
And finally
rad_check_password: Found Auth-Type System auth: type "System" Processing the authenticate section of radiusd.conf modcall: entering group authenticate for request 0 modcall[authenticate]: module "unix" returns notfound for request 0 modcall: leaving group authenticate (returns notfound) for request 0 auth: Failed to validate the user.
Something is setting Auth-Type to "System". It's either the users file on line 153, or your SQL. Fix it.
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