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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= In-Reply-To: <87o7go6dk2.fsf@gmail.com> (Maxim Cournoyer's message of "Mon, 23 Oct 2023 20:59:09 -0400") References: <87ttqi82rh.fsf@gmail.com> <87pm15dpxn.fsf@gnu.org> <87lebtdosw.fsf@gnu.org> <87o7go6dk2.fsf@gmail.com> Date: Tue, 24 Oct 2023 22:27:07 +0200 Message-ID: <877cnb6a1w.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Spam-Score: -6.80 X-Spam-Score: -6.80 X-Migadu-Queue-Id: 6D56A3A2EA X-Migadu-Scanner: mx2.migadu.com X-TUID: JD3oOl5uHVQG Hi, Maxim Cournoyer skribis: > Ludovic Court=C3=A8s writes: > >> Ludovic Court=C3=A8s skribis: >> >>> /var/log/cuirass-remote-server.log: >>> >>> 2023-10-23 00:26:06 0 items queued for eventual download >>> 2023-10-23 00:26:55 period update: 0 resumable, 0 failed builds. >>> 2023-10-23 00:26:58 error: failed to start worker/database proxy: Inval= id argument >> >> EINVAL here most likely comes from replying to a sender with invalid ID, >> due to ZMQ_ROUTER_MANDATORY, exactly what Cuirass commit >> 40f70d28aed55c404cca6a0760860fb4942e6bee fixed and aimed to catch. > > Thanks for picking up the investigation. Does that mean that the above > fix was partial and that there likely is a use after free somewhere > else? Yes, the fix in Cuirass above was insufficient, though you had to be truly unlucky for use-after-free to happen this quickly. Anyway, I had also proposed a fix in guile-simple-zmq, which the upgrade in Guix commit 04215779baaa21f10bd5f20999761dc506e449d8 pulls in. I have yet to reconfigure on berlin. In the meantime I=E2=80=99ll look at the worker side of this issue. Ludo=E2=80=99.