On 12/20/17 3:00 AM, Masami Hiramatsu wrote:
On Fri, 15 Dec 2017 14:12:52 -0500
Josef Bacik wrote:
From: Josef Bacik
Using BPF we can override kprob'ed functions and return arbitrary
values. Obviously this can be a bit unsafe, so make this feature opt-in
for functions. Simply tag a functio
On 12/19/17 11:13 PM, Masami Hiramatsu wrote:
On Tue, 19 Dec 2017 18:14:17 -0800
Alexei Starovoitov wrote:
On 12/18/17 10:29 PM, Masami Hiramatsu wrote:
+#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
+#ifdef CONFIG_BPF_KPROBE_OVERRIDE
BTW, CONFIG_BPF_KPROBE_OVERRIDE is also confusable
On Fri, 15 Dec 2017 14:12:52 -0500
Josef Bacik wrote:
> From: Josef Bacik
>
> Using BPF we can override kprob'ed functions and return arbitrary
> values. Obviously this can be a bit unsafe, so make this feature opt-in
> for functions. Simply tag a function with KPROBE_ERROR_INJECT_SYMBOL in
>
On 12/20/2017 08:13 AM, Masami Hiramatsu wrote:
> On Tue, 19 Dec 2017 18:14:17 -0800
> Alexei Starovoitov wrote:
[...]
>> Please make your suggestion as patches based on top of bpf-next.
>
> bpf-next seems already pick this series. Would you mean I revert it and
> write new patch?
No, please sub
On Tue, 19 Dec 2017 18:14:17 -0800
Alexei Starovoitov wrote:
> On 12/18/17 10:29 PM, Masami Hiramatsu wrote:
> >>
> >> +#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
> >> +#ifdef CONFIG_BPF_KPROBE_OVERRIDE
> >
> > BTW, CONFIG_BPF_KPROBE_OVERRIDE is also confusable name.
> > Since this feature
On 12/18/17 10:29 PM, Masami Hiramatsu wrote:
+#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
+#ifdef CONFIG_BPF_KPROBE_OVERRIDE
BTW, CONFIG_BPF_KPROBE_OVERRIDE is also confusable name.
Since this feature override a function to just return with
some return value (as far as I understand, or
On Fri, 15 Dec 2017 14:12:52 -0500
Josef Bacik wrote:
> From: Josef Bacik
>
> Using BPF we can override kprob'ed functions and return arbitrary
> values. Obviously this can be a bit unsafe, so make this feature opt-in
> for functions. Simply tag a function with KPROBE_ERROR_INJECT_SYMBOL in
>
On Fri, 15 Dec 2017 14:12:52 -0500
Josef Bacik wrote:
> From: Josef Bacik
>
> Using BPF we can override kprob'ed functions and return arbitrary
> values. Obviously this can be a bit unsafe, so make this feature opt-in
> for functions. Simply tag a function with KPROBE_ERROR_INJECT_SYMBOL in
>
From: Josef Bacik
Using BPF we can override kprob'ed functions and return arbitrary
values. Obviously this can be a bit unsafe, so make this feature opt-in
for functions. Simply tag a function with KPROBE_ERROR_INJECT_SYMBOL in
order to give BPF access to that function for error injection purpo
