# Re: \[5.16.0-rc2\] Kernel warning while running sigfuz w/PPC\_IRQ\_SOFT\_MASK\_DEBUG

- From: Sachin Sant \<hidden\>
- Date: 2021-11-25 15:23:56 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/11/9525290
- Thread: https://ratatoskr.run/linuxppc-dev/2021/11/9525268/t.md

```text

>> [ 1032.913679] GPR00: c00000000000c6d8 c00000000c7e7e10 000000002fcdac67 0000000000000800 
>> [ 1032.913679] GPR04: 0000000060d67006 800000000280f032 0000000045faa436 c0000001eb3d4c00 
>> [ 1032.913679] GPR08: 800000000280f032 0000000000000001 0000000000000001 0000000060d67004 
>> [ 1032.913679] GPR12: 0000000060d67006 c00000077fdf2300 0000000000000000 00007fff9da00000 
> 
> SRR0 == r11, regs->nip == r12
> 
> I wonder if this is just that SRR0 does not implement the bottom 2 bits 
> so the check fails when the signal context sets them. Hopefully the 
> panic is just due to this warning 0x700 program check hitting at a bad
> time.
> 
> We could always adjust the debug check but maybe something like this 
> would keep those bits clear which might be cleaner.
> 

Thanks for the patch Nick.
The test runs to completion without any kernel warning/crash.

Thanks
-Sachin
```