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Fri, 20 Mar 2026 11:02:30 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id wweKGEYpvWnoYQAAD6G6ig (envelope-from ); Fri, 20 Mar 2026 11:02:30 +0000 Date: Fri, 20 Mar 2026 12:02:24 +0100 From: Petr Vorel To: virtualization@lists.linux.dev Cc: netdev@vger.kernel.org, Stefano Garzarella , Valentin Lefebvre , Yu Watanabe , Andrei Borzenkov , Luca Boccassi , Luca Boccassi Subject: [RFC] loading vmw_vsock_virtio_transport by systemd breaks vsock_loopback autoloading Message-ID: <20260320110224.GA140154@pevik> Reply-To: Petr Vorel Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-2.21 / 50.00]; BAYES_HAM(-3.00)[99.99%]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_NOT_FQDN(0.50)[]; HAS_REPLYTO(0.30)[pvorel@suse.cz]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; TO_DN_SOME(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.cz:+]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:url,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.cz:dkim,suse.cz:replyto]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[vger.kernel.org,redhat.com,suse.com,gmail.com,debian.org]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from,2a07:de40:b281:106:10:150:64:167:received]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; MISSING_XM_UA(0.00)[]; RCPT_COUNT_SEVEN(0.00)[8]; RCVD_VIA_SMTP_AUTH(0.00)[]; TAGGED_RCPT(0.00)[]; REPLYTO_EQ_FROM(0.00)[] X-Rspamd-Queue-Id: D223D4D24D X-Spam-Flag: NO X-Spam-Score: -2.21 X-Spam-Level: Hi all, there is a systemd bug [1] which causes vsock_loopback not to be autoloaded due previous loading vmw_vsock_virtio_transport in an early phase of boot. vmw_vsock_virtio_transport requires vmw_vsock_virtio_transport_common and vsock, vsock_loopback requires vsock. Reproducer: [2]. Proposed fix in systemd: [3] While I think the bug should be fixed in systemd with proposed fix [3] we'd like to know opinion of the kernel vsock developers in case there is a way to improve vsock modules autoloading. Kind regards, Petr [1] https://github.com/systemd/systemd/issues/41100 [2] https://bugzilla.suse.com/attachment.cgi?id=888729 [3] https://github.com/systemd/systemd/issues/41100#issuecomment-4056603242