[LEDE-DEV] ARC770 Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004

[Alexandru Gagniuc]

On 07/18/2017 09:42 PM, Yousong Zhou wrote:
> On 19 July 2017 at 04:51, Alexandru Gagniuc <alex.g at adaptrum.com> wrote:
>> Hi, I'm trying to get a new ASIC with an ARC770 core running with openwrt,
>> but I keep hitting the attempted to kill init problem, and have run out of
>> debugging ideas. I've tried building busybox statically linked.
>>
>> I'm building a kernel elf with initramfs, and loading that via JTAG. I can
>> get console, and things seem to work up until the kernel passes control to
>> userspace. Devicetree and kernel log attached below.
>>
>> I was wondering if anyone had this problem in the context of LEDE
>> (specifically on arc770), and what was done to resolve it.
>>
>> Thanks,
>> Alex
>>
> ...
>
>> [   12.890000] Kernel panic - not syncing: Attempted to kill init!
>> exitcode=0x00000004
>
> Code 0x4 here very likely refers to SIGILL.  This has happened quite a
> few times before for other architectures.

Yes, it was SIGKILL. Thank you for the pointer. It turns out that uclibc 
is using llock, which was not enabled in the softcore. Instruction 
exception, linux kills process, hence SIGKILL.

Alex