linux-kernel - Re: general protection fault in finish_task

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Message-ID: <CACT4Y+YQZa+E5KbioAtadpUDLNSPtTJh7NAsmM-BvBUA1BUgmw@mail.gmail.com>
Date:   Fri, 22 Dec 2017 10:08:00 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        syzbot 
        <bot+72c44cd8b0e8a1a64b9c03c4396aea93a16465ef@...kaller.appspotmail.com>,
        Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dave Jiang <dave.jiang@...el.com>,
        Hugh Dickins <hughd@...gle.com>, Jan Kara <jack@...e.cz>,
        Jerome Glisse <jglisse@...hat.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>, tcharding <me@...in.cc>,
        Michal Hocko <mhocko@...e.com>,
        Minchan Kim <minchan@...nel.org>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        syzkaller-bugs@...glegroups.com,
        Matthew Wilcox <willy@...radead.org>,
        Eric Biggers <ebiggers3@...il.com>
Subject: Re: general protection fault in finish_task_switch

On Fri, Dec 22, 2017 at 9:57 AM, Peter Zijlstra <peterz@...radead.org> wrote:
>> >> I think this is another manifestation of "KASAN: use-after-free Read
>> >> in __schedule":
>> >> https://groups.google.com/forum/#!msg/syzkaller-bugs/-8JZhr4W8AY/FpPFh8EqAQAJ
>> >> +Eric already mailed a fix for it (indeed new bug in kvm code).
>> >
>> > FWIW, these google links keep translating everything to my local
>> > language, is there any way to tell google to not do stupid stuff like
>> > that and give me English like computers ought to speak?
>>
>>
>> The group has "Group's primary language: English" in settings. I guess
>> that's either your Google account settings (if you are signed in), or
>> browser settings.
>> For chrome there is an option in setting for preferred languages,
>> browsers are supposed to send that in requests. For google account
>> check https://myaccount.google.com/intro there is "Languages" section.
>
> I do not use (nor want to) a google account to sign in. Chromium has
> English set as the preferred language (I typically don't install weird
> localisation things and language packs in any case; 7bit ASCII FTW).
>
> I have also done the google.com/ncr thing, which got rid of google.com
> defaulting to google.nl, but groups.google.com keeps insisting on
> translating the 'app' to Dutch. Seeing both Dutch and English (the
> actual messages) at the same time completely screws my brain.
>
> I'd file a bug against groups.google.com for not respecting the /ncr
> thing, but I suspect you'd require a google account for that :-(


You mean the messages themselves are translated? That's weird. Seems
that Google Translate somehow kicks in. There is a "Offer to translate
pages that aren't in a language you read" setting in chromium, but I
guess if you have only English in languages it should not matter... I
am out of ideas. Just in case, all syzbot reports are on LKML as well.