> On May 19, 2020, at 7:23 PM, Andrii Nakryiko
> wrote:
>
> I agree, it's bad to have this noise. But again, there is nothing
> wrong with the way it's used in BPF code base. We'd gladly use
> flexible array, if we could. But given we can't, I'd say the proper
> solution (in order of my prefe
On Tue, May 19, 2020 at 1:18 PM Qian Cai wrote:
>
> On Tue, May 19, 2020 at 3:30 PM Andrii Nakryiko
> wrote:
> >
> > On Tue, May 19, 2020 at 8:00 AM Qian Cai wrote:
> > >
> > > On Mon, May 18, 2020 at 8:25 PM Andrii Nakryiko
> > > wrote:
> > > >
> > > > On Mon, May 18, 2020 at 5:09 PM Qian Cai
On Tue, May 19, 2020 at 3:30 PM Andrii Nakryiko
wrote:
>
> On Tue, May 19, 2020 at 8:00 AM Qian Cai wrote:
> >
> > On Mon, May 18, 2020 at 8:25 PM Andrii Nakryiko
> > wrote:
> > >
> > > On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
> > > >
> > > > On Mon, May 18, 2020 at 7:55 PM Andrii Nakryi
On Tue, May 19, 2020 at 8:00 AM Qian Cai wrote:
>
> On Mon, May 18, 2020 at 8:25 PM Andrii Nakryiko
> wrote:
> >
> > On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
> > >
> > > On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
> > > wrote:
> > > >
> > > > On Sun, May 17, 2020 at 7:45 PM Qian Cai
On Mon, May 18, 2020 at 8:25 PM Andrii Nakryiko
wrote:
>
> On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
> >
> > On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
> > wrote:
> > >
> > > On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
> > > >
> > > > With Clang 9.0.1,
> > > >
> > > > return arra
On 5/18/20 6:30 PM, Andrii Nakryiko wrote:
On Mon, May 18, 2020 at 6:00 PM Yonghong Song wrote:
On 5/18/20 5:25 PM, Andrii Nakryiko wrote:
On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
wrote:
On Sun, May 17, 2020 at 7:45 PM Qian Cai
On Mon, May 18, 2020 at 6:00 PM Yonghong Song wrote:
>
>
>
> On 5/18/20 5:25 PM, Andrii Nakryiko wrote:
> > On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
> >>
> >> On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
> >> wrote:
> >>>
> >>> On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
>
>
On 5/18/20 5:25 PM, Andrii Nakryiko wrote:
On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
wrote:
On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
With Clang 9.0.1,
return array->value + array->elem_size * (index & array->index_mask);
b
On Mon, May 18, 2020 at 5:09 PM Qian Cai wrote:
>
> On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
> wrote:
> >
> > On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
> > >
> > > With Clang 9.0.1,
> > >
> > > return array->value + array->elem_size * (index & array->index_mask);
> > >
> > > but arr
On Mon, May 18, 2020 at 7:55 PM Andrii Nakryiko
wrote:
>
> On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
> >
> > With Clang 9.0.1,
> >
> > return array->value + array->elem_size * (index & array->index_mask);
> >
> > but array->value is,
> >
> > char value[0] __aligned(8);
>
> This, and ptrs an
On Sun, May 17, 2020 at 7:45 PM Qian Cai wrote:
>
> With Clang 9.0.1,
>
> return array->value + array->elem_size * (index & array->index_mask);
>
> but array->value is,
>
> char value[0] __aligned(8);
This, and ptrs and pptrs, should be flexible arrays. But they are in a
union, and unions don't s
6.125326][ T4352]
[ 506.134603][ T4352] UBSAN: array-index-out-of-bounds in
kernel/bpf/arraymap.c:177:22
[ 506.142521][ T4352] index 8 is out of range for type 'char [0]'
[ 506.148613][ T4352] CPU: 222 PID: 4352 Comm: bpf_prog02 Tainted: G
L5.7.0-rc5-next-20200515 #2
[ 506.158
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