Re: latest current fails to boot.

On Sun, Sep 26, 2021 at 10:23:47AM +0900, Tomoaki AOKI wrote:
> On Sat, 25 Sep 2021 23:46:48 +0300
> Andriy Gapon <avg@FreeBSD.org> wrote:
> 
> > On 25/09/2021 19:10, Johan Hendriks wrote:
> > > For me i had kern.sched.steal_thresh=1 in my sysctl as i use this machine mainly 
> > > for tests and so on.
> > > By removing this sysctl the system boots again. I already used the latest 
> > > snapshot and that booted fine.
> > 
> > Might have something to do with
> > https://cgit.FreeBSD.org/src/commit/?id=bd84094a51c4648a7c97ececdaccfb30bc832096
> > 
> > -- 
> > Andriy Gapon
> 
> Commenting out kern.sched.steal_thresh=0 line in /etc/sysctl.conf let
> me boot fine. No other setting of kern.sched.* affected.
> I've introduced the setting by reading posts [1] and [2] on
> freebsd-current ML. Thanks for the hint, Jan!
> 
> Andriy, I took time to bi-sect and determined the commit triggered
> this issue was e745d729be60. [3]
> Worked OK even with kern.sched.steal_thresh=0 at a342ecd326ee. [4]
> 
> Tested commits are as below (tested order, not using git bisect):
>  0b79a76f8487: [Known to be OK]
>  8db1669959ce: [Problematic rev I first encountered]
>  0f6829488ef3: OK
>  df8dd6025af8: OK
>  4f917847c903: OK
>  e745d729be60: NG!
>  bd84094a51c4: OK
>  a342ecd326ee: OK
> 
> Konstantin, no more chance to get into ddb on hang up until my previous
> post. ^T never worked on hang up situation. Sory. But does info above
> help?
Let the author of the commit look.

> 
> 
> [1]
> https://lists.freebsd.org/pipermail/freebsd-current/2021-March/079237.html
> 
> [2]
> https://lists.freebsd.org/pipermail/freebsd-current/2021-March/079240.html
> 
> [3]
> https://lists.freebsd.org/pipermail/dev-commits-src-main/2021-September/007513.html
> 
> [4]
> https://lists.freebsd.org/pipermail/dev-commits-src-main/2021-September/007512.html
> 
> -- 
> Tomoaki AOKI    <junchoon@dec.sakura.ne.jp>