Another backtrace:


# 2011-03-03T03:38:29 #5  0x00000035a6e340d5 in abort () from /lib64/libc.so.6
# 2011-03-03T03:38:29 #6  0x00000035a6e2b8b5 in __assert_fail () from /lib64/libc.so.6
# 2011-03-03T03:38:29 #7  0x00000000009d115e in find_block (pagecache=0x1a38b60, file=0x7f095c1291c8, pageno=4, init_hits_left=3, wrmode=1 '\001', block_is_copied=1 '\001',
# 2011-03-03T03:38:29     reg_req=1 '\001', page_st=0x7f09d41ea21c) at ma_pagecache.c:2103
# 2011-03-03T03:38:29 #8  0x00000000009d52a8 in pagecache_read (pagecache=0x1a38b60, file=0x7f095c1291c8, pageno=4, level=3, buff=0x7f09d41ea390 "\001", type=PAGECACHE_LSN_PAGE,
# 2011-03-03T03:38:29     lock=PAGECACHE_LOCK_WRITE, page_link=0x7f09d41ea330) at ma_pagecache.c:3383
# 2011-03-03T03:38:29 #9  0x0000000000993b9c in _ma_fetch_keypage (page=0x7f09d41f2db0, info=0x7f094c069578, keyinfo=0x7f095c129788, pos=131072, lock=PAGECACHE_LOCK_WRITE,
# 2011-03-03T03:38:29     level=3, buff=0x7f09d41ea390 "\001", return_buffer=0 '\000') at ma_page.c:109
# 2011-03-03T03:38:29 #10 0x0000000000998313 in w_search (info=0x7f094c069578, comp_flag=0, key=0x0, page_pos=0, father_page=0x0, father_keypos=0x0, insert_last=0 '\000')
# 2011-03-03T03:38:29     at ma_write.c:619
# 2011-03-03T03:38:29 #11 0x00000000009987b1 in w_search (info=0x7f094c069578, comp_flag=402, key=0x7f09d41f2dc0, page_pos=2815028952344838, father_page=0x7f09d41fc970,
# 2011-03-03T03:38:29     father_keypos=0x20000 <Address 0x20000 out of bounds>, insert_last=9 '\t') at ma_write.c:711
# 2011-03-03T03:38:29 #12 0x0000000000997dd3 in _ma_ck_real_write_btree (info=0x7f094c069578, key=0x7f09d41fc970, root=0x7f09d41fc860, comp_flag=655425) at ma_write.c:512
# 2011-03-03T03:38:29 #13 0x0000000000997c76 in _ma_ck_write_btree_with_log (info=0x7f094c069578, key=0x7f09d41fc970, root=0x7f095c129a38, comp_flag=655425) at ma_write.c:478
# 2011-03-03T03:38:29 #14 0x0000000000997acb in _ma_ck_write_btree (info=0x7f094c069578, key=0x7f09d41fc970) at ma_write.c:438
# 2011-03-03T03:38:29 #15 0x0000000000997a3f in _ma_ck_write (info=0x7f094c069578, key=0x7f09d41fc970) at ma_write.c:423
# 2011-03-03T03:38:29 #16 0x0000000000997247 in maria_write (info=0x7f094c069578, record=0x7f094c05e870 "\377\177\001c") at ma_write.c:178
# 2011-03-03T03:38:29 #17 0x000000000093c246 in ha_maria::write_row (this=0x7f094c05e6e0, buf=0x7f094c05e870 "\377\177\001c") at ha_maria.cc:1040
# 2011-03-03T03:38:29 #18 0x00000000007cddae in handler::ha_write_row (this=0x7f094c05e6e0, buf=0x7f094c05e870 "\377\177\001c") at handler.cc:4728
# 2011-03-03T03:38:29 #19 0x000000000072d64f in write_record (thd=0x7f094c05e6e0, table=0x7f094c05e870, info=0x93c246) at sql_insert.cc:1630
# 2011-03-03T03:38:29 #20 0x000000000072b4e6 in mysql_insert (thd=0x49f1558, table_list=0x7f0958007088, fields=..., values_list=..., update_fields=..., update_values=...,
# 2011-03-03T03:38:29     duplic=DUP_ERROR, ignore=false) at sql_insert.cc:860
# 2011-03-03T03:38:29 #21 0x000000000068c8df in mysql_execute_command (thd=0x49f1558) at sql_parse.cc:3279
# 2011-03-03T03:38:29 #22 0x000000000069580d in mysql_parse (thd=0x49f1558,
# 2011-03-03T03:38:29     rawbuf=0x7f0958006f10 "INSERT INTO smf_permissions (`id_group`,`permission`,`add_deny`) VALUES (16302336,'c',10338048)", length=95,
# 2011-03-03T03:38:29     found_semicolon=0x7f09d41fdc70) at sql_parse.cc:6163
# 2011-03-03T03:38:29 #23 0x0000000000687600 in dispatch_command (command=COM_QUERY, thd=0x49f1558,
# 2011-03-03T03:38:29     packet=0x49f4169 "INSERT INTO smf_permissions (`id_group`,`permission`,`add_deny`) VALUES (16302336,'c',10338048)", packet_length=95)
# 2011-03-03T03:38:29     at sql_parse.cc:1273
# 2011-03-03T03:38:29 #24 0x0000000000686620 in do_command (thd=0x49f1558) at sql_parse.cc:899
# 2011-03-03T03:38:29 #25 0x000000000068360f in handle_one_connection (arg=0x49f1558) at sql_connect.cc:1151
# 2011-03-03T03:38:29 #26 0x00000035a7207761 in start_thread () from /lib64/libpthread.so.0
# 2011-03-03T03:38:29 #27 0x00000035a6ee098d in clone () from /lib64/libc.so.6
# 2011-03-03T03:38:29 #5  0x00000035a6e340d5 in abort () from /lib64/libc.so.6

RQG command line:

 perl runall.pl    --queries=1M   --engine=Maria   --mysqld=--default-storage-engine=Maria   --mysqld=--safe-mode   --mysqld=--loose-debug-assert-if-crashed-table   --mysqld=--sync-sys=0   --mysqld=--log-output=file   --mysqld=--maria_log_purge_type=at_flush   --reporters=ErrorLog,Backtrace,Recovery,Shutdown   --duration=480 --threads=20 --rows=1000 --mask-level=2 --mysqld=--maria-repair-threads=2 --mysqld=--loose-maria-group-commit=soft --mysqld=--loose-maria_group_commit_interval=100 --mysqld=--maria-checkpoint-interval=32K --mysqld=--table_cache=32K --mysqld=--maria-block-size=32K --mysqld=--maria-pagecache-buffer-size=512K   --seed=1299116045 --queries=100000000   --mask=3931 --mysqld=--init-file=/home/philips/bzr/randgen/conf/smf/smf2.sql --grammar=conf/smf/smf2.yy   --basedir=/home/philips/bzr/maria-5.1-merge/