Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x48593950 (LWP 7491)]
btr_search_guess_on_hash (index=0x7fd79e9f24b8, info=0x7fd79e9f28b8, tuple=0x7fd46bfaf020, mode=4, latch_mode=2, cursor=0x485924b0, has_search_latch=0, mtr=0x48592580) at ../.././innobase/btr/../include/ut0rnd.ic:216
216                     fold = ut_fold_ulint_pair(fold, (ulint)(*str));
Current language:  auto; currently c
(gdb) bt
#0  btr_search_guess_on_hash (index=0x7fd79e9f24b8, info=0x7fd79e9f28b8, tuple=0x7fd46bfaf020, mode=4, latch_mode=2, cursor=0x485924b0, has_search_latch=0, mtr=0x48592580) at ../.././innobase/btr/../include/ut0rnd.ic:216
#1  0x000000000060464a in btr_cur_search_to_nth_level (index=0x7fd79e9f24b8, level=0, tuple=0x7fd46bfaf020, mode=4, latch_mode=2, cursor=0x485924b0, has_search_latch=0, mtr=0x48592580) at btr0cur.c:299
#2  0x00000000005d99dd in row_search_index_entry (index=0x0, entry=0x0, mode=140564041107697, pcur=0x485924b0, mtr=<value optimized out>) at ../.././innobase/row/../include/btr0pcur.ic:493
#3  0x00000000005d7aca in row_purge_remove_sec_if_poss_low (node=0x7fd79dbd00b8, index=0x7fd79e9f24b8, entry=0x7fd46bfaf020, mode=2) at row0purge.c:210
#4  0x00000000005d8c90 in row_purge_step (thr=0x7fd79dbcedc0) at row0purge.c:286
#5  0x00000000005c050b in que_run_threads (thr=0x7fd79dbcedc0) at que0que.c:1189
#6  0x0000000000619d5c in trx_purge () at trx0purge.c:1108
#7  0x000000000059f108 in srv_master_thread (arg=<value optimized out>) at srv0srv.c:2130
#8  0x00007fd7a033c3f7 in start_thread () from /lib/libpthread.so.0
#9  0x00007fd79f2a9b2d in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()
(gdb)