Re: general protection fault in finish_task_switch

From: Dmitry Vyukov <dvyukov@google.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	syzbot 
	<bot+72c44cd8b0e8a1a64b9c03c4396aea93a16465ef@syzkaller.appspotmail.com>,
	Ingo Molnar <mingo@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Dave Jiang <dave.jiang@intel.com>,
	Hugh Dickins <hughd@google.com>, Jan Kara <jack@suse.cz>,
	Jerome Glisse <jglisse@redhat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>, tcharding <me@tobin.cc>,
	Michal Hocko <mhocko@suse.com>, Minchan Kim <minchan@kernel.org>,
	Ross Zwisler <ross.zwisler@linux.intel.com>,
	syzkaller-bugs@googlegroups.com,
	Matthew Wilcox <willy@infradead.org>,
	Eric Biggers <ebiggers3@gmail.com>
Subject: Re: general protection fault in finish_task_switch
Date: Fri, 22 Dec 2017 10:08:00 +0100	[thread overview]
Message-ID: <CACT4Y+YQZa+E5KbioAtadpUDLNSPtTJh7NAsmM-BvBUA1BUgmw@mail.gmail.com> (raw)
In-Reply-To: <20171222085730.c4kkiohz3fkwsqnr@hirez.programming.kicks-ass.net>

On Fri, Dec 22, 2017 at 9:57 AM, Peter Zijlstra <peterz@infradead.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.