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Miller" , LKML , Linux Security Module list Cc: Casey Schaufler , smack-announce@lists.01.org From: Casey Schaufler Subject: Commit f211ac154577ec9ccf07c15f18a6abf0d9bdb4ab breaks Smack TCP connections Message-ID: <3f8328fe-e648-9d0e-729d-eb6787f11bf9@schaufler-ca.com> Date: Tue, 30 Mar 2021 08:42:04 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Language: en-US References: <3f8328fe-e648-9d0e-729d-eb6787f11bf9.ref@schaufler-ca.com> X-Mailer: WebService/1.1.17936 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Content-Length: 450 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit f211ac154577ec9ccf07c15f18a6abf0d9bdb4ab 'net: correct sk_acceptq_is_full()' breaks a system with the Smack LSM. Reverting this change results in a return to correct behavior. The Smack testsuite can be found at: https://github.com/smack-team/smack-testsuite.git The failing test is ipv4-tcp-local-peersec.sh, but it seems that most TCP connections hang with SYN_SENT. Oddly, ssh to 127.0.0.1 works, but other TCP connections timeout.