From: gregoa@debian.org   
      
   Control: tag -1 - forky   
   Control: tag -1 + confirmed   
      
   On Wed, 18 Feb 2026 19:23:30 +0000, Santiago Vila wrote:   
      
   >Package: src:libdbd-mysql-perl   
   >Version: 4.054-1   
   >Severity: serious   
   >Tags: ftbfs forky sid   
   >   
   >Dear maintainer:   
   >   
   >During a rebuild of all packages in unstable, this package failed to build.   
   >   
      
   >260218 18:09:37 [ERROR] /usr/sbin/mysqld got signal 11 ;   
   >Sorry, we probably made a mistake, and this is a bug.   
   >   
   >Your assistance in bug reporting will enable us to fix this for the next   
   release.   
   >To report this bug, see https://mariadb.com/kb/en/reporting-bugs about how to   
   report   
   >a bug on https://jira.mariadb.org/.   
   >   
   >Please include the information from the server start above, to the end of the   
   >information below.   
   >   
   >Server version: 11.8.6-MariaDB-1 from Debian source revision: 9   
   fea48ce1214cc4470f6f6f8a4e30352cef84e7   
   >   
   >The information page at https://mariadb.com/kb/en/how-to-produc   
   -a-full-stack-trace-for-mariadbd/   
   >contains instructions to obtain a better version of the backtrace below.   
   >Following these instructions will help MariaDB developers provide a fix   
   quicker.   
   >   
   >Attempting backtrace. Include this in the bug report.   
   >(note: Retrieving this information may fail)   
   >   
   >Thread pointer: 0x7f01fc000cd8   
   >stack_bottom = 0x7f0230313000 thread_stack 0x49000   
   >/usr/sbin/mysqld(my_print_stacktrace+0x32) [0x5651795004f2]   
   >/usr/sbin/mysqld(handle_fatal_signal+0x1a7) [0x565178f78247]   
   >/usr/lib/x86_64-linux-gnu/libc.so.6(+0x40a70) [0x7f0247a4aa70]   
   >   
   >Connection ID (thread ID): 28   
   >Status: NOT_KILLED   
   >Query (0x7f01fc012fd0): SELECT NULL AS PKTABLE_CAT,   
   >       A.REFERENCED_TABLE_SCHEMA AS PKTABLE_SCHEM,   
   >       A.REFERENCED_TABLE_NAME AS PKTABLE_NAME,   
   >       A.REFERENCED_COLUMN_NAME AS PKCOLUMN_NAME,   
   >       A.TABLE_CATALOG AS FKTABLE_CAT,   
   >       A.TABLE_SCHEMA AS FKTABLE_SCHEM,   
   >       A.TABLE_NAME AS FKTABLE_NAME,   
   >       A.COLUMN_NAME AS FKCOLUMN_NAME,   
   >       A.ORDINAL_POSITION AS KEY_SEQ,   
   >       NULL AS UPDATE_RULE,   
   >       NULL AS DELETE_RULE,   
   >       A.CONSTRAINT_NAME AS FK_NAME,   
   >       NULL AS PK_NAME,   
   >       NULL AS DEFERABILITY,   
   >       NULL AS UNIQUE_OR_PRIMARY   
   >  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE A,   
   >       INFORMATION_SCHEMA.TABLE_CONSTRAINTS B   
   > WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA AND A.TABLE_NAME = B.TABLE_NAME   
   >   AND A.CONSTRAINT_NAME = B.CONSTRAINT_NAME AND B.CONSTRAINT_TYPE IS NOT NULL   
   > AND A.REFERENCED_TABLE_NAME = 'parent' AND A.TABLE_NAME = 'child' ORDER BY   
   A.TABLE_SCHEMA, A.TABLE_NAME, A.ORDINAL_POSITION   
   >   
   >Optimizer switch: index_merge=on,index_merge_union=on,index_mer   
   e_sort_union=on,index_merge_intersection=on,index_merge_sort_int   
   rsection=off,index_condition_pushdown=on,derived_merge=on,derive   
   _with_keys=on,firstmatch=on,loosescan=on,materialization=on,   
   in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial   
   match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off   
   mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=o   
   ,join_cache_incremental=on,join_cache_hashed=on,join_cache_   
   bka=on,optimize_join_buffer_size=on,table_elimination=on,extende   
   _keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pu   
   hdown_for_derived=on,split_materialized=on,condition_pushdown_fo   
   _subquery=on,rowid_filter=on,condition_pushdown_from_having=   
   on,not_null_range_scan=off,hash_join_cardinality=on,cset_narrowi   
   g=on,sargable_casefold=on   
   >   
   >Writing a core file...   
   >Working directory at /<>/t/testdb   
   >Resource Limits (excludes unlimited resources):   
   >Limit                     Soft Limit           Hard Limit           Units   
   >Max stack size            8388608              unlimited            bytes   
   >Max core file size        0                    unlimited            bytes   
   >Max processes             30885                30885                processes   
   >Max open files            32184                32184                files   
   >Max locked memory         8388608              8388608              bytes   
   >Max pending signals       30885                30885                signals   
   >Max msgqueue size         819200               819200               bytes   
   >Max nice priority         0                    0   
   >Max realtime priority     0                    0   
   >Core pattern: core   
   >   
   >Kernel version: Linux version 6.12.73+deb13-cloud-amd64 (debian   
   kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0,   
   GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian 6.12.73-1   
   (2026-02-17)   
   >   
   >DBD::mysql::db foreign_key_info failed: Lost connection to server during   
   query at t/40catalog.t line 68.   
   >DBD::mysql::db foreign_key_info failed: Lost connection to server during   
   query at t/40catalog.t line 68.   
   ># Looks like your test exited with 11 just after 4.   
   >t/40catalog.t ...........................   
   >1..78   
   >ok 1 - connecting   
   >ok 2 - cleaning up   
   >ok 3   
   >ok 4   
   >Dubious, test returned 11 (wstat 2816, 0xb00)   
   >Failed 74/78 subtests   
      
   This looks like a problem in mariadb 1:11.8.6-1 (in unstable) to me,    
   compared to 1:11.8.5-4 in testing (where libdbd-mysql-perl still    
   builds successfully).   
      
   Looking through the mariadb bugs, I found #1127431, with an error log    
   at https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=11274   
   1;filename=mysql.err;msg=10    
   and forwarded to https://jira.mariadb.org/browse/MDEV-38811 which    
   looks kind of similar to me (the    
   "information_schema.table_constraints" part). Maybe it's even to same    
   bug …   
      
      
      
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