Re: todays git: WARNING: at drivers/ata/libata-sff.c:1017 ata_sff_hsm_move+0x45e/0x750()

Ingo Molnar
2009-01-10T13:25:22Z

* Jeff Garzik <jeff@garzik.org> wrote:

> Ingo Molnar wrote:
>> 871af12: libata: Add 32bit PIO support
>
> What happens when you back this out?

yep, that's the one that looked most suspect to me too so i already
reverted it in tip/out-of-tree.

But in the normal tip/master test cycle the box takes about 50 minutes to
build its random kernel and reboot into it (800 MHz P3), so i started a
full automated bisection instead driven from a faster box.

The bug triggers deterministically so whatever leads to it, we should have
it within ~20 minutes with a bit of luck (== there's no other bug in the
bisection run that makes bisection more difficult).

The current bisection state is:

# bad: [9a100a44] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
# good: [9e42d0cf] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
# good: [e441d54d] Btrfs: add permission checks to the ioctls
# bad: [cd764695] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
# bad: [a419df8a] Merge branch 'upstream-linus' of git://git.kernel.
# good: [61bce0f1] pid: generalize task_active_pid_ns

and "871af12: libata: Add 32bit PIO support" is still in the bisection
window.

Ingo