On Mon, Jan 11, 2021 at 12:58 PM Dmitry Vyukov wrote:
>
> On Mon, Jan 11, 2021 at 6:35 PM Jeffrey Walton wrote:
> >
> > On Mon, Jan 11, 2021 at 12:20 PM Dmitry Vyukov wrote:
> > > ...
> > > FTR, I've disabled the following UBSAN configs:
> > > UBSAN_MISC
> > > UBSAN_DIV_ZERO
> > > UBSAN_BOOL
> >
On Mon, Jan 11, 2021 at 12:20 PM Dmitry Vyukov wrote:
> ...
> FTR, I've disabled the following UBSAN configs:
> UBSAN_MISC
> UBSAN_DIV_ZERO
> UBSAN_BOOL
> UBSAN_OBJECT_SIZE
> UBSAN_SIGNED_OVERFLOW
> UBSAN_UNSIGNED_OVERFLOW
> UBSAN_ENUM
> UBSAN_ALIGNMENT
> UBSAN_UNREACHABLE
>
> Only these are enabl
On Fri, Jan 08, 2021 at 10:33:19AM +0100, Dmitry Vyukov wrote:
> On Thu, Jan 7, 2021 at 8:06 PM Jeffrey Walton wrote:
> >
> > On Thu, Jan 7, 2021 at 2:03 PM Jason A. Donenfeld wrote:
> > >
> > > On Thu, Jan 7, 2021 at 1:22 PM Dmitry Vyukov wrote:
> > > >
> > > > On Mon, Dec 21, 2020 at 12:23 PM
Get me off this fucking list ffs.
> On Jan 7, 2021, at 2:06 PM, Jeffrey Walton wrote:
>
> On Thu, Jan 7, 2021 at 2:03 PM Jason A. Donenfeld wrote:
>>
>> On Thu, Jan 7, 2021 at 1:22 PM Dmitry Vyukov wrote:
>>>
>>> On Mon, Dec 21, 2020 at 12:23 PM Jason A. Donenfeld wrote:
...
>>
On Thu, Jan 7, 2021 at 2:03 PM Jason A. Donenfeld wrote:
>
> On Thu, Jan 7, 2021 at 1:22 PM Dmitry Vyukov wrote:
> >
> > On Mon, Dec 21, 2020 at 12:23 PM Jason A. Donenfeld wrote:
> > >
> > > ...
> >
> > These UBSAN checks were just enabled recently.
> > It's indeed super easy to trigger: 133083
On 21.12.20 12:23, Jason A. Donenfeld wrote:
> Hi Dmitry,
>
...
> fall on the border of a mapping? Is UBSAN non-deterministic as an
> optimization? Or is there actually some mysterious UaF happening with
> my usage of skbs that I shouldn't overlook?
>
One oddity is that wg_xmit() returns negat
Hi Dmitry,
On Mon, Dec 21, 2020 at 10:14 AM Dmitry Vyukov wrote:
> Hi Jason,
>
> Thanks for looking into this.
>
> Reading clang docs for ubsan:
>
> https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
> -fsanitize=object-size: An attempt to potentially use bytes which the
> optimizer can
Hmm, on first glance, I'm not sure I'm seeing the bug:
On Sun, Dec 20, 2020 at 5:54 PM syzbot
wrote:
> UBSAN: object-size-mismatch in ./include/linux/skbuff.h:2021:28
> member access within address 85889cc2 with insufficient space
> for an object of type 'struct sk_buff'
> __skb_queue_be
Hello,
syzbot found the following issue on:
HEAD commit:5e60366d Merge tag 'fallthrough-fixes-clang-5.11-rc1' of g..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12b12c1350
kernel config: https://syzkaller.appspot.com/x/.config?x=267a60b188ded8ed
das
