On Wed, 6 Feb 2019 09:33:35 -0800
Nadav Amit wrote:
> >>/* Copy ftrace_caller onto the trampoline memory */
> >>ret = probe_kernel_read(trampoline, (void *)start_offset, size);
> >> @@ -818,6 +820,13 @@ create_trampoline(struct ftrace_ops *ops, unsigned
> >> int *tramp_size)
> >>/*
> On Feb 6, 2019, at 8:22 AM, Steven Rostedt wrote:
>
> On Wed, 16 Jan 2019 16:32:50 -0800
> Rick Edgecombe wrote:
>
>> From: Nadav Amit
>>
>> Since alloc_module() will not set the pages as executable soon, we need
>> to do so for ftrace trampoline pages after they are allocated.
>>
>> For t
On Wed, 16 Jan 2019 16:32:50 -0800
Rick Edgecombe wrote:
> From: Nadav Amit
>
> Since alloc_module() will not set the pages as executable soon, we need
> to do so for ftrace trampoline pages after they are allocated.
>
> For the time being, we do not change ftrace to use the text_poke()
> inte
From: Nadav Amit
Since alloc_module() will not set the pages as executable soon, we need
to do so for ftrace trampoline pages after they are allocated.
For the time being, we do not change ftrace to use the text_poke()
interface. As a result, ftrace breaks still breaks W^X.
Cc: Steven Rostedt
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