Symptoms
When you bulk insert data into a table from multiple connections in an instance of Microsoft SQL Server 2016, an assertion that resembles the following is logged in the SQL Server error log. Additionally, a dump file is generated.
Note
SQL Server Assertion: File:< pageref.cpp>, line=LineNumber Failed Assertion = 'IS_OFF (BUF_MINLOGGED, m_buf->bstat) || pageModifyType != PageModifyType_Contents || GetPagePtr ()->IsTextPage ()'. This error may be timing-related. If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted.
Resolution
This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 1 for SQL Server 2016 Service Pack 1 (SP1)
Cumulative Update 4 for SQL Server 2016
About the cumulative update
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Latest cumulative update for SQL Server 2016
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.