bt result

GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
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(gdb) target remote localhost:1234
Remote debugging using localhost:1234
Reading /root/qemu/i386-linux-user/qemu-i386 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
Reading /root/qemu/i386-linux-user/qemu-i386 from remote target...
Reading symbols from target:/root/qemu/i386-linux-user/qemu-i386...done.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading symbols from target:/lib64/ld-linux-x86-64.so.2...Reading /lib64/ld-2.23.so from remote target...
Reading /lib64/.debug/ld-2.23.so from remote target...
(no debugging symbols found)...done.
0x00007ffff7dd7c30 in ?? () from target:/lib64/ld-linux-x86-64.so.2
(gdb) ni 256
Reading /lib/x86_64-linux-gnu/libglib-2.0.so.0 from remote target...
Reading /lib/x86_64-linux-gnu/librt.so.1 from remote target...
Reading /lib/x86_64-linux-gnu/libm.so.6 from remote target...
Reading /lib/x86_64-linux-gnu/libpthread.so.0 from remote target...
Reading /lib/x86_64-linux-gnu/libc.so.6 from remote target...
Reading /lib/x86_64-linux-gnu/libpcre.so.3 from remote target...
Reading /lib/x86_64-linux-gnu/librt-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/.debug/librt-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/libm-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/.debug/libm-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/libc-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/.debug/libc-2.23.so from remote target...
Reading /lib/x86_64-linux-gnu/libpcre.so.3.13.2 from remote target...
Reading /lib/x86_64-linux-gnu/.debug/libpcre.so.3.13.2 from remote target...
Warning:
Cannot insert breakpoint 0.
Cannot access memory at address 0x8

0x00007ffff7dd7c49 in ?? () from target:/lib64/ld-linux-x86-64.so.2
(gdb) ni 256
[New Thread 5516.5519]
0x00000000600354af	287	        trapnr = cpu_x86_exec(env);
(gdb) n 483
287	        trapnr = cpu_x86_exec(env);
(gdb) bt
#0  cpu_loop (env=0x62415d00) at /root/qemu/linux-user/main.c:287
#1  0x0000000060037273 in main (argc=8, argv=0x7fffffffe428, 
    envp=0x7fffffffe470) at /root/qemu/linux-user/main.c:4412
(gdb) n

Thread 1 "qemu-i386" received signal SIGSEGV, Segmentation fault.
0x000000006005c4d9 in ldub_p (ptr=0x7ffefc55d013)
    at /root/qemu/include/qemu/bswap.h:235
235	    return *(uint8_t *)ptr;
(gdb) bt
#0  0x000000006005c4d9 in ldub_p (ptr=0x7ffefc55d013)
    at /root/qemu/include/qemu/bswap.h:235
#1  0x000000006006d704 in cpu_ldub_code (env=0x62415d00, ptr=19)
    at /root/qemu/include/exec/cpu_ldst_useronly_template.h:56
#2  0x0000000060078c98 in disas_insn (env=0x62415d00, 
    s=0x7fffffffd8f0, pc_start=19)
    at /root/qemu/target-i386/translate.c:4432
#3  0x0000000060083601 in gen_intermediate_code_internal (
    cpu=0x6240dab0, tb=0x7ffff357b4f0, search_pc=false)
    at /root/qemu/target-i386/translate.c:8028
#4  0x00000000600838f8 in gen_intermediate_code (env=0x62415d00, 
    tb=0x7ffff357b4f0) at /root/qemu/target-i386/translate.c:8109
#5  0x0000000060008d3e in cpu_x86_gen_code (env=0x62415d00, 
    tb=0x7ffff357b4f0, gen_code_size_ptr=0x7fffffffda38)
    at /root/qemu/translate-all.c:160
#6  0x0000000060009db7 in tb_gen_code (cpu=0x6240dab0, pc=19, 
    cs_base=0, flags=4194483, cflags=0)
    at /root/qemu/translate-all.c:1064
#7  0x000000006000b708 in tb_find_slow (env=0x62415d00, pc=19, 
    cs_base=0, flags=4194483) at /root/qemu/cpu-exec.c:299
#8  0x000000006000b875 in tb_find_fast (env=0x62415d00)
    at /root/qemu/cpu-exec.c:327
#9  0x000000006000bcc6 in cpu_x86_exec (env=0x62415d00)
    at /root/qemu/cpu-exec.c:485
#10 0x00000000600354b7 in cpu_loop (env=0x62415d00)
    at /root/qemu/linux-user/main.c:287
#11 0x0000000060037273 in main (argc=8, argv=0x7fffffffe428, 
    envp=0x7fffffffe470) at /root/qemu/linux-user/main.c:4412