Re: Kernel versions 6.x don't boot on Amiga 4000

Geert Uytterhoeven
2023-02-26T11:02:57Z

Hi Adrian,

On Tue, Feb 21, 2023 at 4:53 PM John Paul Adrian Glaubitz
<glaubitz@physik.fu-berlin.de> wrote:
> On Tue, 2023-02-21 at 15:55 +0100, Geert Uytterhoeven wrote:
> > Looks surprisingly similar to the issue reported by Stan.
> > Do the mitigations given in
> > https://lore.kernel.org/all/CAMuHMdUtkr2zvZiJfLXvs9d_inJbktSNqQQfO1oxnJHZeoYcHg@mail.gmail.com
> > help?
>
> The kernel actually crashes with a backtrace:
>
> ABCDGHIJK
> [ 0.000000] Linux version 6.0.0-6-m68k (debian-kernel@lists.debian.org) (gcc-12 (Debian 12.2.0-9) 12.2.0, GNU ld (GNU Binutils for
> Debian) 2.39) #1 Debian 6.0.12-1 (2022-12-09)
> [ 0.000000] Enabling workaround for errata I14
> [ 0.000000] printk: bootconsole [debug0] enabled
> [ 0.000000] Amiga hardware found: [A4000] VIDEO BLITTER AUDIO FLOPPY A4000_IDE KEYBOARD MOUSE SERIAL PARALLEL A3000_CLK CHIP_RAM PAULA
> LISA ALICE_PAL ZORRO3
> [ 0.000000] initrd: 0ef0602c - 0f800000
> [ 0.000000] Zone ranges:
> [ 0.000000] DMA [mem 0x0000000008000000-0x000000f7ffffffff]
> [ 0.000000] Normal empty
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x0000000008000000-0x000000000f7fffff]
> [ 0.000000] Initmem setup node 0 [mem 0x0000000008000000-0x000000000f7fffff]
> [ 0.000000] Unable to handle kernel access at virtual address (ptrval)

I see the same issue on my A4000, bisecting...

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds