lkml.org 
[lkml]   [2019]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG: soft lockup in kvm_vm_release
On Sat, 23 Mar 2019, syzbot wrote:

> syzbot has bisected this bug to:
>
> commit 80eb865768703c0f85a0603762742ae1dedf21f0
> Author: Andrea Parri <andrea.parri@amarulasolutions.com>
> Date: Tue Nov 27 11:01:10 2018 +0000
>
> sched/fair: Clean up comment in nohz_idle_balance()

I.m pretty sure that this bisect is bogus. The commit changes a comment not
code.

> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1362209b200000
> start commit: 57902dc0 Merge tag 'riscv-for-linus-5.0-rc7' of git://git...
> git tree: upstream
> final crash: https://syzkaller.appspot.com/x/report.txt?x=10e2209b200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1762209b200000
> kernel config: https://syzkaller.appspot.com/x/.config?x=ee434566c893c7b1
> dashboard link: https://syzkaller.appspot.com/bug?extid=6349a512c2938b2ad058
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14287e78c00000
>
> Reported-by: syzbot+6349a512c2938b2ad058@syzkaller.appspotmail.com
> Fixes: 80eb86576870 ("sched/fair: Clean up comment in nohz_idle_balance()")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

If I understand that correctly, then the bisect does not try to revert the
commit which it identified on top of the tree where it started to bisect.

I think that'd be a reasonably simple to do extra data point, at least when
the commit reverts cleanly on head.

Thanks,

tglx



\
 
 \ /
  Last update: 2019-03-24 01:05    [W:0.068 / U:23.504 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site