Development discussion of WireGuard
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From: "Eric Light" <eric@ericlight.com>
To: "WireGuard mailing list" <wireguard@lists.zx2c4.com>
Subject: Re: UBSAN: object-size-mismatch in wg_xmit
Date: Fri, 08 Jan 2021 13:50:36 +1300	[thread overview]
Message-ID: <3171d75d-f4a8-40df-9208-5b40f732dfea@www.fastmail.com> (raw)
In-Reply-To: <AB0E5484-9274-4079-9A94-E464E218689E@morsecom.com>

@List - I'll reach out to Corey directly and try to help.  Sorry for the noise.

E

--------------------------------------------
Q: Why is this email five sentences or less?
A: http://five.sentenc.es

On Fri, 8 Jan 2021, at 13:44, Corey Costello wrote:
> Yeah, it doesn’t work for me :( 
> 
> > On Jan 7, 2021, at 7:42 PM, Eric Light <eric@ericlight.com> wrote:
> > 
> > Corey - have you tried unsubscribing at the unsubscribe page?  https://linkprotect.cudasvc.com/url?a=https%3a%2f%2flists.zx2c4.com%2fmailman%2foptions%2fwireguard&c=E,1,Axa-ElbX0arA0gS27knqMcMnUXikmpGux0uV7Gv66JniMpXRVVtWNeYE8mu17nQawpfQEodteBfH9tq43ronGkmm07T_Tq9urTmtYLTTK8YwFg,,&typo=1
> > 
> > Hope this helps,
> > 
> > E
> > 
> > --------------------------------------------
> > Q: Why is this email five sentences or less?
> > A: https://linkprotect.cudasvc.com/url?a=http%3a%2f%2ffive.sentenc.es&c=E,1,L28_oBFr0CKAXDsG0BiDkDDhOYaG4FoH7vdeaKoqnsVwn14kiz9J_PpjMZAoItr_wdFvmWS4wAI7qDgBPljT8qxgdAwCA9Vy54M3bcq8nJBKnA11GFTTG6BEv04,&typo=1
> > 
> > On Fri, 8 Jan 2021, at 13:34, Corey Costello wrote:
> >> Get me off this fucking list ffs.
> >> 
> >> 
> >> 
> >>> On Jan 7, 2021, at 2:06 PM, Jeffrey Walton <noloader@gmail.com> wrote:
> >>> 
> >>> On Thu, Jan 7, 2021 at 2:03 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> >>>> 
> >>>> On Thu, Jan 7, 2021 at 1:22 PM Dmitry Vyukov <dvyukov@google.com> wrote:
> >>>>> 
> >>>>> On Mon, Dec 21, 2020 at 12:23 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> >>>>>> 
> >>>>>> ...
> >>>>> 
> >>>>> These UBSAN checks were just enabled recently.
> >>>>> It's indeed super easy to trigger: 133083 VMs were crashed on this already:
> >>>>> https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fsyzkaller.appspot.com%2fbug%3fextid%3d8f90d005ab2d22342b6d&c=E,1,RVpgZsRUCGs2jKlumiMAMnpeOF4QdiW5h8GDIsBJPz-orFNwvwCXnceC9n5Bhr1h-G2EsU0tlC7N4QUpHuF6tIMI7tTnBoRjAo5tT-Bk9-Fhe8CppuOL4mqdkA,,&typo=1
> >>>>> So it's one of the top crashers by now.
> >>>> 
> >>>> Ahh, makes sense. So it is easily reproducible after all.
> >>>> 
> >>>> You're still of the opinion that it's a false positive, right? I
> >>>> shouldn't spend more cycles on this?
> >>> 
> >>> You might consider making a test build with -fno-lto in case LTO is
> >>> mucking things up.
> >>> 
> >>> Google Posts Patches So The Linux Kernel Can Be LTO-Optimized By
> >>> Clang, https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.phoronix.com%2fscan.php%3fpage%3dnews_item%26px%3dLinux-Kernel-Clang-LTO-Patches&c=E,1,7u3-jWadklYo8ai_XrPNvjnu46LLAyg0hqsGIaMPaoQ5UxtcNM84jrHUgSg4VciXKk9XVpwgyBwD85LbbW5_j195jSH6RrAej45I1kr_XfQ,&typo=1
> >>> 
> >>> Jeff
> >> 
> >> 
> 
>

  reply	other threads:[~2021-01-08  0:52 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-20 16:54 syzbot
2020-12-20 21:11 ` Jason A. Donenfeld
2020-12-21  9:14   ` Dmitry Vyukov
2020-12-21 11:23     ` Jason A. Donenfeld
2021-01-07 12:22       ` Dmitry Vyukov
2021-01-07 19:00         ` Jason A. Donenfeld
2021-01-07 19:06           ` Jeffrey Walton
2021-01-08  0:34             ` Corey Costello
2021-01-08  0:42               ` Eric Light
2021-01-08  0:44                 ` Corey Costello
2021-01-08  0:50                   ` Eric Light [this message]
2021-01-08  1:02                 ` Phillip McMahon
2021-01-08  9:33             ` Dmitry Vyukov
2021-01-08 20:54               ` Nathan Chancellor
2021-01-08  9:30           ` Dmitry Vyukov
     [not found]             ` <CAGXu5j+jzmkiU_AWoTVF6e263iYSSJYUHB=Kdqh-MCfEO-aNSg@mail.gmail.com>
2021-01-09  9:46               ` Dmitry Vyukov
2021-01-09 10:49                 ` Matthias Urlichs
2021-01-11 17:17                 ` Dmitry Vyukov
2021-01-11 17:35                   ` Jeffrey Walton
2021-01-11 17:58                     ` Dmitry Vyukov
2021-01-11 18:14                       ` Jeffrey Walton
2021-01-12  9:54                         ` Dmitry Vyukov
2021-01-07 12:53       ` Jeffrey Walton
2021-01-07 17:01       ` Julian Wiedmann
2021-01-07 18:58         ` Jason A. Donenfeld

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