Re: Crash in memory_region_init_ram call chain, when --bios command line parameter is presented.

[Peter Maydell]

On Tue, 14 Feb 2023 at 11:03, Alyosha Shevandin
<shevandin_al@hotmail.com> wrote:
>
>
> I would appreciate any clue about the crash.
>
> When I start my custom SoC emulation and the –bios command line parameter us 
> presented, the QEMU processes crashes before the custom code even tries to 
> load the firmware. It crashes in the *memory_region_init_ram* call chain with 
> the follow stack:
>
>
> #0 0x00005613255a6932 in object_class_dynamic_cast_assert
>
> (class=0x56006f6b756b, typename=0x5613259e94ee "bus", file=0x5613259e94a8 
> "/project/users/ashevandin/qemu-speedata/include/hw/qdev-core.h", line=217, 
> func=0x5613259e9828 <__func__.18> "BUS_GET_CLASS")
>
> at ../qom/object.c:963
>
> #1 0x000056132559e3a3 in BUS_GET_CLASS (obj=0x561326fd7830) at 
> /project/users/ashevandin/qemu-speedata/include/hw/qdev-core.h:217
>
> #2 0x000056132559f434 in qdev_get_dev_path (dev=0x561326d27800) at 
> ../hw/core/qdev.c:422
>
> #3 0x00005613254f489d in qemu_ram_set_idstr (new_block=0x56132710acc0, 
> name=0x5613270e1760 "speedata.callisto.ddr1", dev=0x561326d27800) at 
> ../softmmu/physmem.c:1766
>
> #4 0x00005613250a1069 in vmstate_register_ram (mr=0x561326d27950, 
> dev=0x561326d27800) at ../migration/savevm.c:3104
>
> #5 0x00005613254ee0c8 in memory_region_init_ram (mr=0x561326d27950, 
> owner=0x561326d27800, name=0x561325983052 "speedata.callisto.ddr1", 
> size=4294967296, errp=0x5613262c6178 <error_abort>)
>
> at ../softmmu/memory.c:3543

Looking at the back trace, my guess is that you've passed in
an 'owner' argument to memory_region_init_ram() that isn't
a valid initialized device object.

-- PMM