Re: [Qemu-devel] Is *-bsd-user target broken?

[Igor Mammedov]

On 06/26/2012 05:56 PM, Andreas Färber wrote:
> Am 26.06.2012 17:49, schrieb Igor Mammedov:
> > Example of what I've did on FreeBSD, qemu with your recent patches and
> > ld patch form qemu-devel port:
> >
> > # ./configure  --enable-debug  --disable-werror --target-list=i386-bsd-user
> >
> > # ./i386-bsd-user/qemu-i386 -strace -bsd FreeBSD -L / /bin/ls
> >
> > After some waiting it SIGSEGVs with following trace:
> >
> > 0x801484e8 in g_hash_table_lookup () from /usr/local/lib/libglib-2.0.so.0
> > (gdb) bt
> > #0  0x801484e8 in g_hash_table_lookup () from
> > /usr/local/lib/libglib-2.0.so.0
> > #1  0x6001788c in type_table_lookup (name=0x600c72be "i386-cpu") at
> > qom/object.c:95
> > #2  0x60017b60 in type_get_by_name (name=0x600c72be "i386-cpu") at
> > qom/object.c:157
> > #3  0x60018837 in object_dynamic_cast (obj=0x80534010,
> > typename=0x600c72be "i386-cpu") at qom/object.c:435
> > #4  0x6001897e in object_dynamic_cast_assert (obj=0x80534010,
> > typename=0x600c72be "i386-cpu") at qom/object.c:484
> > #5  0x60051eff in x86_cpu_realize (obj=0x80534010, errp=0x0) at
> > /root/qemu/target-i386/cpu.c:1709
> > #6  0x60053488 in cpu_x86_init (cpu_model=0x600c3711 "qemu32") at
> > /root/qemu/target-i386/helper.c:1178
> > #7  0x60022c61 in cpu_init (cpu_model=0x600c3711 "qemu32") at cpu.h:965
> > #8  0x6002238e in main (argc=7, argv=0xbfbfebd4) at
> > /root/qemu/bsd-user/main.c:915
>
> Sounds like something is going wrong with linking of qom/cpu.o... Could
On OpenBSD it crashes in other place.
build with --disable-pie and run as "qemu-i386 -strace -bsd OpenBSD -L / 
/bin/ls"

yelds after waiting:

Program received signal SIGSEGV, Segmentation fault.
[Switching to process 5929, thread 0xaa6ea800]
0x60028e8a in g_free (ptr=0xaf303000) at /home/qemuup/bsd-user/mmap.c:119
119         munmap(p, *p);
(gdb) bt
#0  0x60028e8a in g_free (ptr=0xaf303000) at /home/qemuup/bsd-user/mmap.c:119
#1  0x60021c3e in setup_arg_pages (p=1074264779, bprm=0xcfbcad3c, 
info=0xcfbcaeac) at /home/qemuup/bsd-user/elfload.c:698
#2  0x600259d1 in load_elf_binary (bprm=0xcfbcad3c, regs=0xcfbcaee8, 
info=0xcfbcaeac) at /home/qemuup/bsd-user/elfload.c:1395
#3  0x600216d8 in loader_exec (filename=0xcfbcc24b "/bin/ls", argv=0xcfbcc188, 
envp=0xa8a25880, regs=0xcfbcaee8, infop=0xcfbcaeac)
    at /home/qemuup/bsd-user/bsdload.c:184
#4  0x6002832e in main (argc=7, argv=0xcfbcc170) at 
/home/qemuup/bsd-user/main.c:961



> you check a clean build before Paolo's refactoring?
Do you know wich commit id?
> Andreas

--
-----
 Igor