Re: [Qemu-devel] Segmentation Fault running Raspberry Pi OS.

[Stefan Weil]

On 11/09/16 22:35, Julio Faracco wrote:
> Hi guys,
>
> I was developing a simple OS for Raspberry Pi 2.
> When I was debugging my OS using "-s -S" options for QEMU, I was
> getting a segfault: Segmentation fault (core dumped).
>
> After that, I decided to run QEMU (for ARM using a raspi2 machine) inside GDB.
>
> $ gdb ./arm-softmmu/qemu-system-arm
> (gdb) run -kernel ~/myos/kernel.elf -cpu arm1176 -m 256 -M raspi2 -s -S
>
> After starting my kernel in another GDB instance, I got a segfault as
> I mentioned.
> Here is the error and the backtrace:
>
> Thread 1 "qemu-system-arm" received signal SIGSEGV, Segmentation fault.
> 0x0000555555785da7 in tb_page_remove (tb=0x7fffd2cf40f0, ptb=0x30) at
> /home/julio/qemu/translate-all.c:1033
> 1033        ptb = &tb1->page_next[n1];

Does this happen with other kernels (for example official Raspbian) too?
If not: could you provide your special kernel, so it is possible to
reproduce that crash?

Cheers
Stefan