Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.11, 11.4, 11.8
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None
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None
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Can result in hang or crash
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Q3/2026 Server Maintenance
Description
--source include/have_partition.inc
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SET @@GLOBAL.myisam_use_mmap=1; |
CREATE TABLE t1 (c1 INT KEY,c2 INT) ENGINE=MYISAM PARTITION BY RANGE(c1) (PARTITION p1 VALUES LESS THAN(100)); |
INSERT INTO t1 VALUES (0,0); |
OPTIMIZE TABLE t1; |
HANDLER t1 OPEN; |
HANDLER t1 READ `PRIMARY` LAST; |
HANDLER t1 READ `PRIMARY`=(1); |
HANDLER t1 READ `PRIMARY` PREV; |
Leads to:
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CS 10.11.18 6f1204ad849b72a997fd34ce44a522d76716c24d (Debug, Clang 18.1.3-11) Build 22/05/2026 |
Core was generated by `/test/MD220526-mariadb-10.11.18-linux-x86_64-dbg/bin/mariadbd --no-defaults --l'.
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Program terminated with signal SIGSEGV, Segmentation fault.
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#0 __memcpy_evex_unaligned_erms ()at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:366
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[Current thread is 1 (LWP 3079067)]
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(gdb) bt
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#0 __memcpy_evex_unaligned_erms ()at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:366
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#1 0x00005f025fb137a6 in mi_mmap_pread (info=0x759c6402e978, Buffer=0xa5a5a5a5a5a5a5af <error: Cannot access memory at address 0xa5a5a5a5a5a5a5af>, Count=9, offset=0, MyFlags=4)at /test/10.11_dbg/storage/myisam/mi_dynrec.c:183
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#2 0x00005f025fb33652 in _mi_read_static_record (info=0x759c6402e978, pos=0, record=0xa5a5a5a5a5a5a5af <error: Cannot access memory at address 0xa5a5a5a5a5a5a5af>) at /test/10.11_dbg/storage/myisam/mi_statrec.c:178
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#3 0x00005f025fb2cee4 in mi_rprev (info=0x759c6402e978, buf=0xa5a5a5a5a5a5a5af <error: Cannot access memory at address 0xa5a5a5a5a5a5a5af>, inx=0) at /test/10.11_dbg/storage/myisam/mi_rprev.c:106
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#4 0x00005f025faf8d7f in ha_myisam::index_prev (this=0x759c6402ca20, buf=0xa5a5a5a5a5a5a5af <error: Cannot access memory at address 0xa5a5a5a5a5a5a5af>) at /test/10.11_dbg/storage/myisam/ha_myisam.cc:2027
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#5 0x00005f025f26d183 in handler::ha_index_prev (this=0x759c6402ca20, buf=0xa5a5a5a5a5a5a5af <error: Cannot access memory at address 0xa5a5a5a5a5a5a5af>) at /test/10.11_dbg/sql/handler.cc:3744
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#6 0x00005f025f5cfb19 in ha_partition::handle_ordered_prev (this=0x759c6402c178, buf=0x759c6402da00 "\375H")at /test/10.11_dbg/sql/ha_partition.cc:8486
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#7 0x00005f025f5cfa8c in ha_partition::index_prev (this=0x759c6402c178, buf=0x759c6402da00 "\375H") at /test/10.11_dbg/sql/ha_partition.cc:6330
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#8 0x00005f025f26d183 in handler::ha_index_prev (this=0x759c6402c178, buf=0x759c6402da00 "\375H") at /test/10.11_dbg/sql/handler.cc:3744
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#9 0x00005f025ee25b09 in mysql_ha_read (thd=0x759c64000d58, tables=0x759c640135d8, mode=RPREV, keyname=0x759c64013d00 "PRIMARY", key_expr=0x759c64013d08, ha_rkey_mode=HA_READ_KEY_EXACT, cond=0x0, select_limit_cnt=1, offset_limit_cnt=0)at /test/10.11_dbg/sql/sql_handler.cc:937
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#10 0x00005f025ee8ccbc in mysql_execute_command (thd=0x759c64000d58, is_called_from_prepared_stmt=false)at /test/10.11_dbg/sql/sql_parse.cc:5823
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#11 0x00005f025ee7c404 in mysql_parse (thd=0x759c64000d58, rawbuf=0x759c64013480 "HANDLER t1 READ `PRIMARY` PREV", length=30, parser_state=0x7db38cc37a20) at /test/10.11_dbg/sql/sql_parse.cc:8221
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#12 0x00005f025ee79859 in dispatch_command (command=COM_QUERY, thd=0x759c64000d58, packet=0x759c6400af09 "", packet_length=30, blocking=true) at /test/10.11_dbg/sql/sql_parse.cc:1924
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#13 0x00005f025ee7cfb3 in do_command (thd=0x759c64000d58, blocking=true)at /test/10.11_dbg/sql/sql_parse.cc:1434
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#14 0x00005f025f05b889 in do_handle_one_connection (connect=0x5f026ede72f8, put_in_cache=true) at /test/10.11_dbg/sql/sql_connect.cc:1475
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#15 0x00005f025f05b622 in handle_one_connection (arg=0x5f026ede7288)at /test/10.11_dbg/sql/sql_connect.cc:1387
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#16 0x00007db39829caa4 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
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#17 0x00007db398329c6c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
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Bug Detection Matrix |
Rel o/d Build Commit UniqueID observed
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CS 10.11 dbg 220526 6f1204ad849b72a997fd34ce44a522d76716c24d SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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CS 10.11 opt 220526 6f1204ad849b72a997fd34ce44a522d76716c24d No bug found
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CS 11.4 dbg 220526 19c59f2c79637cc360cc6d6b219ed9131124500d SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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CS 11.4 opt 220526 19c59f2c79637cc360cc6d6b219ed9131124500d No bug found
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CS 11.8 dbg 220526 b494164767979072713fdeccc175ce3b3f5b1983 SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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CS 11.8 opt 220526 b494164767979072713fdeccc175ce3b3f5b1983 No bug found
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CS 12.3 dbg 220526 66b3c6784689fbb65110a5b21efcb815a8bcde24 No bug found
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CS 12.3 opt 220526 66b3c6784689fbb65110a5b21efcb815a8bcde24 No bug found
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CS 13.0 dbg 220526 c8e8d33309606e682c98675d594dbd23ebc2ddf6 No bug found
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CS 13.0 opt 220526 c8e8d33309606e682c98675d594dbd23ebc2ddf6 No bug found
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ES 10.6 dbg 040825 9b794f34b48fb7eee490b6da44edc0f33a947447 SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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ES 10.6 opt 040825 9b794f34b48fb7eee490b6da44edc0f33a947447 No bug found
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ES 11.4 dbg 040825 a1c03ccd54b582e75506687ee19b273ca897f261 SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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ES 11.4 opt 040825 a1c03ccd54b582e75506687ee19b273ca897f261 No bug found
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ES 11.8 dbg 151025 780565c207e9ce0ebf7d8e3d59f223801447b619 SIGSEGV|mi_mmap_pread|_mi_read_static_record|mi_rprev|ha_myisam::index_prev
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ES 11.8 opt 151025 780565c207e9ce0ebf7d8e3d59f223801447b619 No bug found
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