Em Mon, Jan 22, 2018 at 10:28:11AM -0800, Yonghong Song escreveu:
> The compiler did "40: (bf) r1 = r0" and then uses "r1" for branch
> comparison, the original "r0" is left with complete unknown integer value
> and later used to calculate the buffer size "55: (bf) r5 = r0"
> where "r5" could be
On 1/22/18 7:06 AM, Arnaldo Carvalho de Melo wrote:
Em Wed, Nov 22, 2017 at 10:42:22AM -0800, Gianluca Borello escreveu:
On Tue, Nov 21, 2017 at 2:31 PM, Alexei Starovoitov
wrote:
yeah sorry about this hack. Gianluca reported this issue as well.
Yonghong fixed
Em Wed, Nov 22, 2017 at 10:42:22AM -0800, Gianluca Borello escreveu:
> On Tue, Nov 21, 2017 at 2:31 PM, Alexei Starovoitov
> wrote:
> >
> > yeah sorry about this hack. Gianluca reported this issue as well.
> > Yonghong fixed it for bpf_probe_read only. We will extend
On Tue, Nov 21, 2017 at 2:31 PM, Alexei Starovoitov
wrote:
>
> yeah sorry about this hack. Gianluca reported this issue as well.
> Yonghong fixed it for bpf_probe_read only. We will extend
> the fix to bpf_probe_read_str() and bpf_perf_event_output() asap.
> The
On Tue, Nov 21, 2017 at 11:29:05AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Nov 14, 2017 at 02:58:24PM -0800, Yonghong Song escreveu:
> > On 11/14/17 12:25 PM, Daniel Borkmann wrote:
> > > Yeah, I know, that's what I mentioned earlier in this thread to resolve
> > > it,
> > > but do we
Em Tue, Nov 14, 2017 at 02:58:24PM -0800, Yonghong Song escreveu:
> On 11/14/17 12:25 PM, Daniel Borkmann wrote:
> > Yeah, I know, that's what I mentioned earlier in this thread to resolve it,
> > but do we really want to add this hack everywhere? :( Potentially any
> > function
> > having
On 11/20/17 5:31 AM, Arnaldo Carvalho de Melo wrote:
Em Tue, Nov 14, 2017 at 09:25:17PM +0100, Daniel Borkmann escreveu:
On 11/14/2017 07:15 PM, Yonghong Song wrote:
On 11/14/17 6:19 AM, Daniel Borkmann wrote:
On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Nov 14, 2017 at
Em Tue, Nov 14, 2017 at 09:25:17PM +0100, Daniel Borkmann escreveu:
> On 11/14/2017 07:15 PM, Yonghong Song wrote:
> > On 11/14/17 6:19 AM, Daniel Borkmann wrote:
> >> On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
> >>> Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
On 11/14/17 12:25 PM, Daniel Borkmann wrote:
On 11/14/2017 07:15 PM, Yonghong Song wrote:
On 11/14/17 6:19 AM, Daniel Borkmann wrote:
On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
On 11/14/2017 01:58 PM, Arnaldo
On 11/14/2017 07:15 PM, Yonghong Song wrote:
> On 11/14/17 6:19 AM, Daniel Borkmann wrote:
>> On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
>>> Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
> Em Tue,
On 11/14/17 6:19 AM, Daniel Borkmann wrote:
On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Nov 14, 2017 at 01:09:39AM +0100, Daniel Borkmann escreveu:
Em Tue, Nov 14, 2017 at 03:19:51PM +0100, Daniel Borkmann escreveu:
> On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
> >> On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
> >> Currently having a version
On 11/14/2017 02:42 PM, Arnaldo Carvalho de Melo wrote:
> Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
>> On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
>>> Em Tue, Nov 14, 2017 at 01:09:39AM +0100, Daniel Borkmann escreveu:
On 11/13/2017 04:08 PM, Arnaldo
Em Tue, Nov 14, 2017 at 02:09:34PM +0100, Daniel Borkmann escreveu:
> On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Nov 14, 2017 at 01:09:39AM +0100, Daniel Borkmann escreveu:
> >> On 11/13/2017 04:08 PM, Arnaldo Carvalho de Melo wrote:
> >>> libbpf: -- BEGIN DUMP LOG ---
>
On 11/14/2017 01:58 PM, Arnaldo Carvalho de Melo wrote:
> Em Tue, Nov 14, 2017 at 01:09:39AM +0100, Daniel Borkmann escreveu:
>> On 11/13/2017 04:08 PM, Arnaldo Carvalho de Melo wrote:
>>> libbpf: -- BEGIN DUMP LOG ---
>>> libbpf:
>>> 0: (79) r3 = *(u64 *)(r1 +104)
>>> 1: (b7) r2 = 0
>>> 2: (bf)
Em Tue, Nov 14, 2017 at 01:09:39AM +0100, Daniel Borkmann escreveu:
> On 11/13/2017 04:08 PM, Arnaldo Carvalho de Melo wrote:
> > libbpf: -- BEGIN DUMP LOG ---
> > libbpf:
> > 0: (79) r3 = *(u64 *)(r1 +104)
> > 1: (b7) r2 = 0
> > 2: (bf) r6 = r1
> > 3: (bf) r1 = r10
> > 4: (07) r1 += -128
> > 5:
On 11/13/2017 04:08 PM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Nov 13, 2017 at 03:56:14PM +0100, Daniel Borkmann escreveu:
>> On 11/13/2017 03:30 PM, Arnaldo Carvalho de Melo wrote:
>>> Hi,
>>>
>>> In a5e8c07059d0 ("bpf: add bpf_probe_read_str helper") you
>>> state:
>>>
>>>"This is
Em Mon, Nov 13, 2017 at 03:56:14PM +0100, Daniel Borkmann escreveu:
> On 11/13/2017 03:30 PM, Arnaldo Carvalho de Melo wrote:
> > Hi,
> >
> > In a5e8c07059d0 ("bpf: add bpf_probe_read_str helper") you
> > state:
> >
> >"This is suboptimal because the size of the string needs to be
On 11/13/2017 03:30 PM, Arnaldo Carvalho de Melo wrote:
> Hi,
>
> In a5e8c07059d0 ("bpf: add bpf_probe_read_str helper") you
> state:
>
>"This is suboptimal because the size of the string needs to be estimated
> at compile time, causing more memory to be copied than often
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