Bug#1035587: linux: broken AHCI controller on MIPS Loongson 3 (regression from 5.10.162-1)

[Jiaxun Yang <jiaxun.yang@flygoat.com>]

> 2023年5月6日 01:58，YunQiang Su <wzssyqa@gmail.com> 写道：
> 
> Aurelien Jarno <aurel32@debian.org> 于2023年5月6日周六 04:30写道：
>> 
>> Source: linux
>> Version: 5.10.178-3
>> Severity: important
>> X-Debbugs-Cc: dsa@debian.org, debian-mips@lists.debian.org, syq@debian.org
>> 
>> Following the point release, the buildd mipsel-osuosl-03.d.o does not
>> boot anymore, with errors in the AHCI controller:
>> 
>> [   35.912147] ata4.00: exception Emask 0x0 SAct 0x20000000 SErr 0x0 action 0x6 frozen
>> [   35.919769] ata4.00: failed command: WRITE FPDMA QUEUED
>> [   35.924968] ata4.00: cmd 61/20:e8:00:f0:e1/00:00:00:00:00/40 tag 29 ncq dma 16384 out
>> [   35.924968]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
>> [   35.940097] ata4.00: status: { DRDY }
>> [   35.943743] ata4: hard resetting link
>> 
>> While that initially looks like a hardware issue, it appears that
>> reverting the kernel to 5.10.162-1 (from 5.10.178-3) fixes the issue.
>> Strangely mipsel.osuosl-05.d.o, which seems to be similar hardware (CPU,
>> motherboard and SATA drive), does not exhibit the same issue.
>> 
> 
> Maybe the different firmwares are used for them...
> CCed Huacai and Jiaxun.

I’m unable to reproduce on my side. Perhaps different hardware.
Is it possible to bisect Kernel on that machine to see of reverting that two commits do help?

Thanks
Jiaxun


> 
>> You'll find attached the output of /proc/cpuinfo, lspci and the full
>> boot log.
> 
> 
> 
> -- 
> YunQiang Su