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Bug with CheckUser extension
Open, LowPublic

Description

Problem: When getting users for an IP address or IP address range, this occurs:

[5a54dbf916d70d373189953f] /wiki/Special:CheckUser InvalidArgumentException: Cannot create a user with no name, no ID, and no actor ID

Backtrace:

from /var/www/html/includes/user/UserFactory.php(263)
#0 /var/www/html/includes/user/UserFactory.php(199): MediaWiki\User\UserFactory->newFromAnyId()
#1 /var/www/html/extensions/CheckUser/src/CheckUser/Pagers/CheckUserGetUsersPager.php(193): MediaWiki\User\UserFactory->newFromUserIdentity()
#2 /var/www/html/extensions/CheckUser/src/CheckUser/Pagers/CheckUserGetUsersPager.php(167): MediaWiki\CheckUser\CheckUser\Pagers\CheckUserGetUsersPager->formatUserRow()
#3 /var/www/html/extensions/CheckUser/src/CheckUser/SpecialCheckUser.php(435): MediaWiki\CheckUser\CheckUser\Pagers\CheckUserGetUsersPager->getBody()
#4 /var/www/html/includes/specialpage/SpecialPage.php(719): MediaWiki\CheckUser\CheckUser\SpecialCheckUser->execute()
#5 /var/www/html/includes/specialpage/SpecialPageFactory.php(1669): MediaWiki\SpecialPage\SpecialPage->run()
#6 /var/www/html/includes/actions/ActionEntryPoint.php(504): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#7 /var/www/html/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#8 /var/www/html/includes/MediaWikiEntryPoint.php(199): MediaWiki\Actions\ActionEntryPoint->execute()
#9 /var/www/html/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#10 {main}

[95f3da58548e2a9b80b5b14d] /wiki/Special:CheckUser TypeError: MediaWiki\User\UserIdentityValue::__construct(): Argument #2 ($name) must be of type string, null given, called in /var/www/html/extensions/CheckUser/src/CheckUser/Pagers/CheckUserGetActionsPager.php on line 686

When getting actions, this error occurs:

Backtrace:

from /var/www/html/includes/user/UserIdentityValue.php(60)
#0 /var/www/html/extensions/CheckUser/src/CheckUser/Pagers/CheckUserGetActionsPager.php(686): MediaWiki\User\UserIdentityValue->__construct()
#1 /var/www/html/includes/pager/IndexPager.php(297): MediaWiki\CheckUser\CheckUser\Pagers\CheckUserGetActionsPager->preprocessResults()
#2 /var/www/html/includes/pager/IndexPager.php(571): MediaWiki\Pager\IndexPager->doQuery()
#3 /var/www/html/extensions/CheckUser/src/CheckUser/SpecialCheckUser.php(408): MediaWiki\Pager\IndexPager->getBody()
#4 /var/www/html/includes/specialpage/SpecialPage.php(719): MediaWiki\CheckUser\CheckUser\SpecialCheckUser->execute()
#5 /var/www/html/includes/specialpage/SpecialPageFactory.php(1669): MediaWiki\SpecialPage\SpecialPage->run()
#6 /var/www/html/includes/actions/ActionEntryPoint.php(504): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#7 /var/www/html/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#8 /var/www/html/includes/MediaWikiEntryPoint.php(199): MediaWiki\Actions\ActionEntryPoint->execute()
#9 /var/www/html/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#10 {main}

Details

Security
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Event Timeline

Justarandomamerican triaged this task as Low priority.

Problem is localized to the IP and account of Nexovia.

Weird, for a specific IP address. Any idea what's causing this? Is there an upstream ticket on Wikimedia Phabricator?

I think it might be a bug in the UserMerge extension, which was previously used to merge Nexovia and The woman into one, and delete Nexovia.

@Justarandomamerican I believe you should update the database, as it is possible that some references to the old user were not updated properly in the database

In T115#2086, @Harvici wrote:

@Justarandomamerican I believe you should update the database, as it is possible that some references to the old user were not updated properly in the database

Ah, good thought.

I think it might be a bug in the UserMerge extension, which was previously used to merge Nexovia and The woman into one, and delete Nexovia.

Ah, that might do it, since UserMerge isn't used much anymore; it may not be compatible with the latest iterations of CheckUser.

I didn't even know we still had UserMerge on Test Wiki. I do like it for merging multiple vandal accounts into one.

Personally I think UserMerge causes more issues than it fixes, and should ideally be removed because it's buggy and old.

Personally I think UserMerge causes more issues than it fixes, and should ideally be removed because it's buggy and old.

I would agree. Will remove.. soon™