Files on SMB-share corrupted while up- and downloading

[ShinjiLE]

Steps to reproduce

Using SMB Share

Expected behaviour

Files uploaded and downloaded without corruption

Actual behaviour

Datablocks are truncated to 8192 Bytes

Server configuration detail

Operating system: Linux 5.11.6-1-default #1 SMP Thu Mar 11 16:11:36 UTC 2021 (7358b30) x86_64

Webserver: Apache (fpm-fcgi)

Database: mysql 10.5.9

PHP version:

7.4.16
Modules loaded: Core, date, libxml, pcre, filter, hash, Reflection, SPL, session, SimpleXML, standard, xml, cgi-fcgi, mysqlnd, apcu, bcmath, bz2, ctype, curl, dom, enchant, mbstring, fileinfo, ftp, gd, gettext, gmp, ice, iconv, imagick, intl, json, lzf, exif, memcached, mysqli, openssl, pcntl, PDO, pdo_mysql, pdo_sqlite, zlib, posix, readline, redis, smbclient, sockets, sqlite3, tidy, tokenizer, uuid, xmlreader, xmlwriter, zip, Phar, libsmbclient, Zend OPcache

Nextcloud version: 21.0.1 RC1 - 21.0.1.0

Updated from an older Nextcloud/ownCloud or fresh install:

Where did you install Nextcloud from: unknown

Signing status

Array
(
)

List of activated apps

Enabled:
 - activity: 2.14.3
 - admin_audit: 1.11.0
 - announcementcenter: 5.0.0
 - bookmarks: 4.1.0
 - calendar: 2.2.0
 - checksum: 1.1.2
 - cloud_federation_api: 1.4.0
 - comments: 1.11.0
 - contacts: 3.5.1
 - contactsinteraction: 1.2.0
 - dashboard: 7.1.0
 - dav: 1.17.1
 - deck: 1.3.2
 - duplicatefinder: 0.0.6
 - event_update_notification: 1.2.0
 - extract: 1.3.1
 - federatedfilesharing: 1.11.0
 - federation: 1.11.0
 - files: 1.16.0
 - files_external: 1.12.0
 - files_fulltextsearch: 21.0.0
 - files_fulltextsearch_tesseract: 20.0.1
 - files_markdown: 2.3.3
 - files_pdfviewer: 2.1.0
 - files_rightclick: 1.0.0
 - files_sharing: 1.13.1
 - files_texteditor: 2.14.0
 - files_trashbin: 1.11.0
 - files_versions: 1.14.0
 - files_videoplayer: 1.10.0
 - firstrunwizard: 2.10.0
 - fulltextsearch: 21.0.0
 - fulltextsearch_elasticsearch: 21.0.0
 - groupfolders: 9.0.0
 - impersonate: 1.8.0
 - integration_github: 1.0.0
 - integration_mastodon: 1.0.0
 - integration_twitter: 1.0.0
 - issuetemplate: 0.7.0
 - logreader: 2.6.0
 - lookup_server_connector: 1.9.0
 - maps: 0.1.8
 - metadata: 0.13.0
 - music: 1.1.0
 - news: 15.3.2
 - nextcloud_announcements: 1.10.0
 - notes: 4.0.4
 - notifications: 2.9.0
 - notify_push: 0.1.6
 - oauth2: 1.9.0
 - passman: 2.3.7
 - password_policy: 1.11.0
 - phonetrack: 0.6.7
 - photos: 1.3.0
 - polls: 1.8.1
 - previewgenerator: 3.1.1
 - pride: 0.0.3
 - privacy: 1.5.0
 - provisioning_api: 1.11.0
 - recommendations: 1.0.0
 - serverinfo: 1.11.0
 - settings: 1.3.0
 - sharebymail: 1.11.0
 - side_menu: 1.23.1
 - social: 0.4.2
 - spreed: 11.1.1
 - support: 1.4.0
 - survey_client: 1.9.0
 - systemtags: 1.11.0
 - tasks: 0.13.6
 - telephoneprovider: 1.0.3
 - text: 3.2.0
 - theming: 1.12.0
 - twofactor_backupcodes: 1.10.0
 - updatenotification: 1.11.0
 - user_status: 1.1.1
 - viewer: 1.5.0
 - weather_status: 1.1.0
 - workflowengine: 2.3.0
Disabled:
 - accessibility
 - apporder
 - bruteforcesettings
 - circles
 - encryption
 - epubreader
 - files_linkeditor
 - files_trackdownloads
 - flowupload
 - integration_discourse
 - nextbackup
 - suspicious_login
 - talk_matterbridge
 - talk_simple_poll
 - user_ldap

Configuration (config/config.php)

{
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "nextcloud.mybase.selfhost.de",
        "cloudnext.mybase.selfhost.de"
    ],
    "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
    "default_phone_region": "DE",
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "tempdirectory": "\/var\/tmp\/nextcloudtemp",
    "overwrite.cli.url": "https:\/\/nextcloud.mybase.selfhost.de",
    "knowledgebaseenabled": true,
    "dbtype": "mysql",
    "version": "21.0.1.0",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "updater.release.channel": "beta",
    "appstore.experimental.enabled": true,
    "maintenance": false,
    "loglevel": 3,
    "debug": false,
    "htaccess.RewriteBase": "\/",
    "activity_use_cached_mountpoints": true,
    "session_keepalive": true,
    "session_lifetime": 86400,
    "versions_retention_obligation": "auto",
    "trashbin_retention_obligation": "auto",
    "enable_previews": true,
    "preview_max_x": 2560,
    "preview_max_y": 1600,
    "preview_max_filesize_image": 200,
    "preview_libreoffice_path": "\/usr\/bin\/libreoffice",
    "preview_office_cl_parameters": " --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ",
    "enabledPreviewProviders": [
        "OC\\Preview\\PNG",
        "OC\\Preview\\JPEG",
        "OC\\Preview\\GIF",
        "OC\\Preview\\BMP",
        "OC\\Preview\\XBitmap",
        "OC\\Preview\\MP3",
        "OC\\Preview\\TXT",
        "OC\\Preview\\MarkDown",
        "OC\\Preview\\TIFF",
        "OC\\Preview\\SVG",
        "OC\\Preview\\Postscript",
        "OC\\Preview\\OpenDocument",
        "OC\\Preview\\PDF",
        "OC\\Preview\\Font",
        "OC\\Preview\\Epub",
        "OC\\Preview\\StarOffice",
        "OC\\Preview\\HEIC",
        "OC\\Preview\\KRITA"
    ],
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpmode": "smtp",
    "mail_smtpauthtype": "LOGIN",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "log_type": "syslog",
    "logfile": "\/var\/log\/nextcloud.log",
    "logfilemode": 416,
    "log_rotate_size": 104857600,
    "syslog_tag": "Nextcloud",
    "memcache.distributed": "\\OC\\Memcache\\Memcached",
    "memcache.local": "\\OC\\Memcache\\Redis",
    "filelocking.enabled": "true",
    "filelocking.ttl": 3600,
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 6379,
        "timeout": 0,
        "dbindex": 0,
        "password": "***REMOVED SENSITIVE VALUE***"
    },
    "memcached_servers": [
        [
            "192.168.1.10",
            11211
        ],
        [
            "192.168.1.50",
            11211
        ]
    ],
    "data-fingerprint": "790e9a77b6ee76b2af214c8f58d75dfd",
    "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpauth": 1,
    "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
    "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpsecure": "tls",
    "mysql.utf8mb4": true,
    "allow_user_to_change_display_name": true,
    "auth.bruteforce.protection.enabled": true,
    "ldapIgnoreNamingRules": false,
    "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
    "theme": "",
    "app_install_overwrite": [
        "fulltextsearch",
        "fulltextsearch_elasticsearch",
        "files_fulltextsearch",
        "files_fulltextsearch_tesseract",
        "passman",
        "pride",
        "checksum",
        "files_markdown",
        "telephoneprovider",
        "circles",
        "camerarawpreviews",
        "files_external_gdrive",
        "music",
        "facerecognition",
        "groupfolders",
        "side_menu",
        "metadata",
        "issuetemplate"
    ],
    "updater.secret": "***REMOVED SENSITIVE VALUE***"
}

Are you using external storage, if yes which one: smb

Are you using encryption:

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

Client configuration

Browser: Mozilla/5.0 (X11; Linux x86_64; rv:86.0) Gecko/20100101 Firefox/86.0

Operating system:

Logs

Web server error log

Insert your web server log here 

Nextcloud log

Apr 08 10:37:33 rin libsmbclient[2213]: {"reqId":"ipoKR7FMx5eRhV7BUHwF","level":3,"time":"2021-04-08T08:37:33+00:00","remoteAddr":"84.134.23.233","user":"shinji","app":"PHP","method":"GET","url":"/index.php/apps/files/api/v1/thumbnail/256/256/Bilder/Photos/2021/04/IMG_20210408_103713.jpg","message":"{\"Exception\":\"Error\",\"Message\":\"fread(): Icewind\\\\SMB\\\\Native\\\\NativeReadStream::stream_read - read 253952 bytes more data than requested (262144 read, 8192 max) - excess data will be lost at /srv/www/vhosts/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php#55\",\"Code\":0,\"Trace\":[{\"function\":\"onError\",\"class\":\"OC\\\\Log\\\\ErrorHandler\",\"type\":\"::\",\"args\":[2,\"fread(): Icewind\\\\SMB\\\\Native\\\\NativeReadStream::stream_read - read 253952 bytes more data than requested (262144 read, 8192 max) - excess data will be lost\",\"/srv/www/vhosts/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php\",55,{\"count\":8192}]},{\"file\":\"/srv/www/vhosts/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php\",\"line\":55,\"function\":\"fread\",\"args\":[null,8192]},{\"file\":\"/srv/www/vhosts/nextcloud/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php\",\"line\":96,\"function\":\"stream_read\",\"class\":\"Icewind\\\\Streams\\\\Wrapper\",\"type\":\"->\",\"args\":[8192]},{\"function\":\"stream_read\",\"class\":\"Icewind\\\\Streams\\\\CallbackWrapper\",\"type\":\"->\",\"args\":[8192]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/ProviderV2.php\",\"line\":92,\"function\":\"file_put_contents\",\"args\":[\"/tmp/oc_tmp_XQQFAM\",null]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/Image.php\",\"line\":50,\"function\":\"getLocalFile\",\"class\":\"OC\\\\Preview\\\\ProviderV2\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"}]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/GeneratorHelper.php\",\"line\":63,\"function\":\"getThumbnail\",\"class\":\"OC\\\\Preview\\\\Image\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},2560,1600]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/Generator.php\",\"line\":244,\"function\":\"getThumbnail\",\"class\":\"OC\\\\Preview\\\\GeneratorHelper\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Preview\\\\JPEG\"},{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},2560,1600]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/Generator.php\",\"line\":140,\"function\":\"getMaxPreview\",\"class\":\"OC\\\\Preview\\\\Generator\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\SimpleFS\\\\SimpleFolder\"},{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},\"image/jpeg\",\"\"]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Preview/Generator.php\",\"line\":109,\"function\":\"generatePreviews\",\"class\":\"OC\\\\Preview\\\\Generator\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},[{\"width\":256,\"height\":256,\"crop\":true,\"mode\":\"fill\"}],\"image/jpeg\"]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/PreviewManager.php\",\"line\":190,\"function\":\"getPreview\",\"class\":\"OC\\\\Preview\\\\Generator\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},256,256,true,\"fill\",null]},{\"file\":\"/srv/www/vhosts/nextcloud/apps/files/lib/Controller/ApiController.php\",\"line\":130,\"function\":\"getPreview\",\"class\":\"OC\\\\PreviewManager\",\"type\":\"->\",\"args\":[{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"},256,256,true]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/AppFramework/Http/Dispatcher.php\",\"line\":218,\"function\":\"getThumbnail\",\"class\":\"OCA\\\\Files\\\\Controller\\\\ApiController\",\"type\":\"->\",\"args\":[256,256,{\"__class__\":\"OC\\\\Files\\\\Node\\\\File\"}]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/AppFramework/Http/Dispatcher.php\",\"line\":127,\"function\":\"executeController\",\"class\":\"OC\\\\AppFramework\\\\Http\\\\Dispatcher\",\"type\":\"->\",\"args\":[{\"__class__\":\"OCA\\\\Files\\\\Controller\\\\ApiController\"},\"getThumbnail\"]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/AppFramework/App.php\",\"line\":157,\"function\":\"dispatch\",\"class\":\"OC\\\\AppFramework\\\\Http\\\\Dispatcher\",\"type\":\"->\",\"args\":[{\"__class__\":\"OCA\\\\Files\\\\Controller\\\\ApiController\"},\"getThumbnail\"]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/private/Route/Router.php\",\"line\":302,\"function\":\"main\",\"class\":\"OC\\\\AppFramework\\\\App\",\"type\":\"::\",\"args\":[\"APIController\",\"getThumbnail\",{\"__class__\":\"OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer\"},{\"x\":\"256\",\"y\":\"256\",\"file\":\"Bilder/Photos/2021/04/IMG_20210408_103713.jpg\",\"_route\":\"files.API.getThumbnail\"}]},{\"file\":\"/srv/www/vhosts/nextcloud/lib/base.php\",\"line\":993,\"function\":\"match\",\"class\":\"OC\\\\Route\\\\Router\",\"type\":\"->\",\"args\":[\"/apps/files/api/v1/thumbnail/256/256/Bilder/Photos/2021/04/IMG_20210408_103713.jpg\"]},{\"file\":\"/srv/www/vhosts/nextcloud/index.php\",\"line\":37,\"function\":\"handleRequest\",\"class\":\"OC\",\"type\":\"::\",\"args\":[]}],\"File\":\"/srv/www/vhosts/nextcloud/lib/private/Log/ErrorHandler.php\",\"Line\":92,\"CustomMessage\":\"--\"}","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.15.1","version":"21.0.1.0"}

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[tsueri]

There's also a problem with PDFs, if you try to open them on a SMB-Share:

Opening files from an SMB-Share also resluts in this error with onlyoffice:

This is the related log entry:

[PHP] Error: Error: stream_get_contents(): Icewind\SMB\Native\NativeReadStream::stream_read - read 6762 bytes more data than requested (14954 read, 8192 max) - excess data will be lost at /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Common.php#200 at <<closure>>

 0. <<closure>>
    OC\Log\ErrorHandler::onError(2, "stream_get_cont ... t", "/usr/local/www/ ... p", 200, {path: "06 Abtei ... l})
 1. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Common.php line 200
    stream_get_contents(null)
 2. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php line 246
    OC\Files\Storage\Common->file_get_contents("06 Abteilung Ba ... x")
 3. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php line 246
    OC\Files\Storage\Wrapper\Wrapper->file_get_contents("06 Abteilung Ba ... x")
 4. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Wrapper/Availability.php line 265
    OC\Files\Storage\Wrapper\Wrapper->file_get_contents("06 Abteilung Ba ... x")
 5. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php line 246
    OC\Files\Storage\Wrapper\Availability->file_get_contents("06 Abteilung Ba ... x")
 6. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php line 246
    OC\Files\Storage\Wrapper\Wrapper->file_get_contents("06 Abteilung Ba ... x")
 7. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/View.php line 1167
    OC\Files\Storage\Wrapper\Wrapper->file_get_contents("06 Abteilung Ba ... x")
 8. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/View.php line 597
    OC\Files\View->basicOperation("file_get_contents", "/NCuser ... x", ["read"])
 9. /usr/local/www/nginx-dist/nextcloud/lib/private/Files/Node/File.php line 57
    OC\Files\View->file_get_contents("/NCuser ... x")
10. /usr/local/www/nginx-dist/nextcloud/apps/onlyoffice/controller/callbackcontroller.php line 295
    OC\Files\Node\File->getContent()
11. /usr/local/www/nginx-dist/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 169
    OCA\Onlyoffice\Controller\CallbackController->download("eyJ0eXAiOiJKV1Q ... o")
12. /usr/local/www/nginx-dist/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 100
    OC\AppFramework\Http\Dispatcher->executeController(OCA\Onlyoffice\C ... {}, "download")
13. /usr/local/www/nginx-dist/nextcloud/lib/private/AppFramework/App.php line 152
    OC\AppFramework\Http\Dispatcher->dispatch(OCA\Onlyoffice\C ... {}, "download")
14. /usr/local/www/nginx-dist/nextcloud/lib/private/Route/Router.php line 309
    OC\AppFramework\App::main("OCA\\Onlyoffice ... r", "download", OC\AppFramework\ ... {}, {_route: "onlyoffice.callback.download"})
15. /usr/local/www/nginx-dist/nextcloud/lib/base.php line 1008
    OC\Route\Router->match("/apps/onlyoffice/download")
16. /usr/local/www/nginx-dist/nextcloud/index.php line 37
    OC::handleRequest()

GET /apps/onlyoffice/download?doc=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJhY3Rpb24iOiJkb3dubG9hZCIsImZpbGVJZCI6MTAzMjE3MzksInVzZXJJZCI6ImpvbmFzLnp1ZXJjaGVyIn0.krSgL_a7mKFKNIOkO3AyJAO0sVZp5SjWzVHRuoZkJ0o
from xxx.xxx.xxx.xxx by NCuser at 2021-04-09T10:34:25+00:00

[tfischer77]

Exact same problem here since the upgrade of nextcloud to 21.0.1.1 (Debian 10 buster). It used to work on nextcloud 20.0
{"reqId":"UFEfRIRM1StPanG5TPc9","level":3,"time":"2021-04-09T11:17:30+00:00","remoteAddr":"172.29.245.218","user":"0DDE4180-D98F-4A42-B092-9EBCF09A70FB","app":"PHP","method":"GET","url":"/nextcloud/remote.php/webdav/05_Automation//01_Backbone/INX_C.vsdx","message":{"Exception":"Error","Message":"fread(): Icewind\\SMB\\Native\\NativeReadStream::stream_read - read 229376 bytes more data than requested (237568 read, 8192 max) - excess data will be lost at /srv/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php#55","Code":0,"Trace":[{"function":"onError","class":"OC\\Log\\ErrorHandler","type":"::","args":[2,"fread(): Icewind\\SMB\\Native\\NativeReadStream::stream_read - read 229376 bytes more data than requested (237568 read, 8192 max) - excess data will be lost","/srv/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php",55,{"count":8192}]},{"file":"/srv/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php","line":55,"function":"fread","args":[null,8192]},{"file":"/srv/nextcloud/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php","line":96,"function":"stream_read","class":"Icewind\\Streams\\Wrapper","type":"->","args":[8192]},{"function":"stream_read","class":"Icewind\\Streams\\CallbackWrapper","type":"->","args":[8192]},{"file":"/srv/nextcloud/3rdparty/sabre/http/lib/Sapi.php","line":112,"function":"stream_copy_to_stream","args":[null,null,3635960]},{"file":"/srv/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":490,"function":"sendResponse","class":"Sabre\\HTTP\\Sapi","type":"::","args":[{"__class__":"Sabre\\HTTP\\Response"}]},{"file":"/srv/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->","args":[{"__class__":"Sabre\\HTTP\\Request"},{"__class__":"Sabre\\HTTP\\Response"}]},{"file":"/srv/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->","args":[]},{"file":"/srv/nextcloud/apps/dav/appinfo/v1/webdav.php","line":84,"function":"exec","class":"Sabre\\DAV\\Server","type":"->","args":[]},{"file":"/srv/nextcloud/remote.php","line":167,"args":["/srv/nextcloud/apps/dav/appinfo/v1/webdav.php"],"function":"require_once"}],"File":"/srv/nextcloud/lib/private/Log/ErrorHandler.php","Line":92,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36","version":"21.0.1.1"}

[muchachagrande]

Same problem here

EDIT 1:
I can confirm that it was working fine on 21.0.0

I'm using Nextcloud official VM from hanssonit.se

EDIT 2:
May be related to this update:
#26263

[cheneraie]

Same problem after update 20.0.8 to 20.0.9. I had to restore 20.0.8.
Debian 10, Apache 2.4, PHP 7.3

[snetAT]

Same problem after update 20.0.8.1 to 21.0.1.1
Debian 10, Apache 2.4, PHP 7.3

@muchahagrande, good hint!
I have /var/www/apps/files_external/3rdparty/icewind (only icewind dir) restored from version 20.0.8.1 and now it works again

[CacheMinimal]

Same issue here with a 20.0.8.1 to 21.0.1.1 upgrade, as released today.

I am running on Ubuntu Server 20.04.2 LTS. The issue manifests as a whole series of massive buffer overflows in the fread() function when accessing External Storage via SMB:

fread(): Icewind\\SMB\\Native\\NativeReadStream::stream_read - read 8192 bytes more data than requested (16384 read, 8192 max) - excess data will be lost at /srv/www/nextcloud/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php#55

I have narrowed the issue down to only happening when php-smbclient is installed (in this case from php7.4-smbclient_1.0.6-1+ubuntu20.04.1+deb.sury.org+1_amd64.deb via https://launchpad.net/~ondrej/+archive/ubuntu/php due to the package having been pulled from Debian repositories due to licensing issues).

I have another identical server running Nextcloud 20.0.8.1 with the same php7.4-smbclient_1.0.6-1+ubuntu20.04.1+deb.sury.org+1_amd64.deb installed. This does not exhibit any such issues.

My workaround is to remove php-smbclient and install just smbclient instead. After a bounce of the web server (Apache, in this case) access to the External Storage via SMB returns without corruption. Sadly the notify of changes implemented via php-smbclient is lost and I regularly need to scan the external storage for changes.

A quick patch would be much appreciated. Maybe @icewind1991 has already seen this?

[jfdelaquis]

Could also be related with #26303. It is mentioned that the problem is with SFTP, although I experience the same issue with the SMB mounts as outlined here. Opening the files directly from the server, there is no corruption, but opening from withing the WebUI I experience the same as mentioned above; pictures open as seen in the first post or not at all and pdf files don't work. Audio files skip in the playback. After checking the logs, it is related with fread capping at 8192 bytes as mentioned above.

The problem also occurred after updating from 20.0.8 to 21.0.1

[muchachagrande]

Same problem after update 20.0.8.1 to 21.0.1.1
Debian 10, Apache 2.4, PHP 7.3

@muchahagrande, good hint!
I have /var/www/apps/files_external/3rdparty/icewind (only icewind dir) restored from version 20.0.8.1 and now it works again

@Aejoh, I've just tried your workaround and I can confirm that is working again. Thank you.

[KekcuHa]

I have /var/www/apps/files_external/3rdparty/icewind (only icewind dir) restored from version 20.0.8.1 and now it works again

Same issue after upgrade 21.0.0 -> 21.0.1, same workaround (replace icewing with previous version).

[manjman]

Same issue on a fresh 21.0.1.1 docker install (latest fpm)

[efelon]

I have installed NC manually and can confirm the workaround as well. For me the path is:

/var/www/nextcloud/apps/files_external/3rdparty/icewind

[scharel]

I have the same issue after updating from 20.0.8 to 20.0.9.
Restoring icewind from the updater-backup as described above resolved the issue.

[fracklaus]

Same here, after upgrading from 20.0.8 to 21.0.1.
Upload seems to work for me, downloads are broken.
Edit: Workaround (replacing apps/files_external/3rdparty/icewind with content from version 21.0.0 seems to be working for me as well).