`files_external:notify` crashes on SMB mounts after upgrading to v33

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

I was doing occ files_external:notify 1 (1 being the mount point to watch) for over a year, and while it wasn't working ideally, it wasn't crashing.

Now it does:

Apr 09 02:13:30 cloud bash[1768]:   [Icewind\SMB\Exception\ConnectionRefusedException]
Apr 09 02:13:30 cloud bash[1768]:                                                       
Apr 09 02:13:30 cloud bash[1768]: files_external:notify [-u|--user USER] [-p|--password PASSWORD] [--path PATH] [--no-self-check] [--dry-run] [--output [OUTPUT]] [--] <mount_id>
Apr 09 02:13:30 cloud bash[1775]: In SMB.php line 67:
Apr 09 02:13:30 cloud bash[1775]:                                
Apr 09 02:13:30 cloud bash[1775]:   user or password is not set
Apr 09 02:13:30 cloud bash[1775]:                          

Steps to reproduce

1. Attempt to monitor external file share with the command listed above.

Expected behavior

Monitor just stands there and works.

Nextcloud Server version

33

Operating system

RHEL/CentOS

PHP engine version

PHP 8.4

Web server

Nginx

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Upgraded to a MAJOR version (ex. 31 to 32)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "loglevel": 1,
        "log_type": "file",
        "log_type_audit": "file",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "updatechecker": false,
        "check_for_working_htaccess": false,
        "asset-pipeline.enabled": false,
        "assetdirectory": "\/var\/lib\/nextcloud",
        "preview_libreoffice_path": "\/usr\/bin\/libreoffice",
        "apps_paths": [
            {
                "path": "\/usr\/share\/nextcloud\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/lib\/nextcloud\/apps",
                "url": "\/apps-appstore",
                "writable": true
            }
        ],
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "cloud.rudd-o.com"
        ],
        "dbtype": "mysql",
        "version": "33.0.1.2",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "htaccess.RewriteBase": "\/",
        "mail_smtpmode": "smtp",
        "mail_smtpsecure": "tls",
        "mail_sendmailmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_smtpauth": 1,
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "enabledPreviewProviders": [
            "OC\\Preview\\BMP",
            "OC\\Preview\\GIF",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\Krita",
            "OC\\Preview\\MarkDown",
            "OC\\Preview\\MP3",
            "OC\\Preview\\OpenDocument",
            "OC\\Preview\\PNG",
            "OC\\Preview\\TXT",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\Movie",
            "OC\\Preview\\PDF"
        ],
        "preview_max_x": 1024,
        "preview_max_y": 1024,
        "theme": "",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "https:\/\/cloud.rudd-o.com",
        "app_install_overwrite": [
            "news",
            "caniupdate",
            "inventory",
            "files_markdown",
            "mindmap_app",
            "facerecognition",
            "files_scripts",
            "otpmanager",
            "files_mindmap"
        ],
        "memcache.local": "\\OC\\Memcache\\APCu",
        "default_phone_region": "CH",
        "maintenance_window_start": 4,
        "memories.db.triggers.fcu": true,
        "memories.exiftool_no_local": true,
        "memories.vod.path": "\/var\/lib\/nextcloud\/apps\/memories\/bin-ext\/go-vod-amd64",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "memcache.distributed": "\\OC\\Memcache\\Redis"
    }
}

List of activated Apps

Enabled:
  - activity: 6.0.0-dev.0
  - app_api: 33.0.0
  - bruteforcesettings: 6.0.0-dev.0
  - calendar: 6.2.2
  - circles: 33.0.0
  - cloud_federation_api: 1.17.0
  - comments: 1.23.0
  - contacts: 8.4.3
  - contactsinteraction: 1.14.1
  - dashboard: 7.13.0
  - dav: 1.36.0
  - deck: 1.17.0
  - event_update_notification: 2.8.0
  - facerecognition: 0.9.70
  - federatedfilesharing: 1.23.0
  - federation: 1.23.0
  - files: 2.5.0
  - files_downloadlimit: 5.1.0-dev.0
  - files_external: 1.25.1
  - files_mindmap: 0.0.33
  - files_pdfviewer: 6.0.0-dev.0
  - files_reminders: 1.6.0
  - files_scripts: 4.1.0
  - files_sharing: 1.25.2
  - files_trashbin: 1.23.0
  - files_versions: 1.26.0
  - fileslibreofficeedit: 2.0.1
  - firstrunwizard: 6.0.0-dev.0
  - gpoddersync: 3.16.0
  - inventory: 0.1.4
  - logreader: 6.0.0
  - lookup_server_connector: 1.21.0
  - memories: 8.0.1
  - news: 28.1.0
  - nextcloud_announcements: 5.0.0
  - notifications: 6.0.0
  - oauth2: 1.21.0
  - password_policy: 5.0.0-dev.0
  - photos: 6.0.0-dev.0
  - polls: 8.6.3
  - previewgenerator: 5.13.0
  - privacy: 5.0.0-dev.0
  - profile: 1.2.0
  - provisioning_api: 1.23.0
  - recognize: 11.0.1
  - related_resources: 4.0.0-dev.0
  - richdocuments: 10.1.2
  - serverinfo: 5.0.0-dev.0
  - settings: 1.16.0
  - sharebymail: 1.23.0
  - side_menu: 5.3.0
  - support: 5.0.0
  - survey_client: 5.0.0-dev.0
  - systemtags: 1.23.0
  - tables: 2.0.1
  - tasks: 0.17.1
  - text: 7.0.0-dev.3
  - theming: 2.8.0
  - twofactor_backupcodes: 1.22.0
  - twofactor_totp: 15.0.0-dev.0
  - updatenotification: 1.23.0
  - user_status: 1.13.0
  - viewer: 6.0.0-dev.0
  - weather_status: 1.13.0
  - webhook_listeners: 1.5.0
  - whiteboard: 1.5.7
  - workflow_ocr: 1.33.0
  - workflow_script: 4.0.0
  - workflowengine: 2.15.0
Disabled:
  - admin_audit: 1.23.0 (installed 1.20.0)
  - encryption: 2.21.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - otpmanager: 1.1.2 (installed 1.1.2)
  - recommendations: 6.0.0-dev.0 (installed 3.0.0)
  - suspicious_login: 11.0.0-dev.0
  - testing: 1.23.0
  - twofactor_nextcloud_notification: 7.0.0
  - uppush: 2.4.0 (installed 2.4.0)
  - user_ldap: 1.24.0

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Start by reproducing the files_external:notify command for the SMB mount and tracing the failure reported at SMB.php line 67. The work is done when monitoring the mount no longer crashes after the upgrade and continues running as expected.