On Tue, 20 May 2014, Jiri Slaby wrote:
> Yes, this is a problem I was thinking of in another context yesterday.
> Patching ->read or any other file_openrations which hold state over
> user<->kernel switches may be a potential threat like above. The same as
> in other implementations of live patchi
On Tuesday 20 May 2014 05:06 PM, Jiri Slaby wrote:
> On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
>>> +/*
>>> + * The stub needs to modify the RIP value stored in struct pt_regs
>>> + * so that ftrace redirects the execution properly.
>>> + */
>>> +#define KGR_STUB_ARCH_SLOW(_name, _new_functio
On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
>> +/*
>> + * The stub needs to modify the RIP value stored in struct pt_regs
>> + * so that ftrace redirects the execution properly.
>> + */
>> +#define KGR_STUB_ARCH_SLOW(_name, _new_function)\
>> +static void _new_function ##_stu
On Wednesday 14 May 2014 04:14 PM, Jiri Slaby wrote:
> On 05/14/2014 12:41 PM, Aravinda Prasad wrote:
>>
>>
>> On Wednesday 14 May 2014 03:42 PM, Jiri Slaby wrote:
>>> On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
On Wednesday 30 April 2014 08:00 PM, Jiri Slaby wrote:
> From: Jiri Kosin
On 05/14/2014 12:41 PM, Aravinda Prasad wrote:
>
>
> On Wednesday 14 May 2014 03:42 PM, Jiri Slaby wrote:
>> On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
>>> On Wednesday 30 April 2014 08:00 PM, Jiri Slaby wrote:
From: Jiri Kosina
Provide initial implementation. We are now able
On Wednesday 14 May 2014 03:42 PM, Jiri Slaby wrote:
> On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
>> On Wednesday 30 April 2014 08:00 PM, Jiri Slaby wrote:
>>> From: Jiri Kosina
>>>
>>> Provide initial implementation. We are now able to do ftrace-based
>>> runtime patching of the kernel code
On 05/14/2014 11:28 AM, Aravinda Prasad wrote:
> On Wednesday 30 April 2014 08:00 PM, Jiri Slaby wrote:
>> From: Jiri Kosina
>>
>> Provide initial implementation. We are now able to do ftrace-based
>> runtime patching of the kernel code.
>>
>> In addition to that, we will provide a kgr_patcher mod
On Wednesday 30 April 2014 08:00 PM, Jiri Slaby wrote:
> From: Jiri Kosina
>
> Provide initial implementation. We are now able to do ftrace-based
> runtime patching of the kernel code.
>
> In addition to that, we will provide a kgr_patcher module in the next
> patch to test the functionality.
On Thu, 1 May 2014, Andi Kleen wrote:
> > diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
> > index 1e96c3628bf2..a03b1e9d2de3 100644
> > --- a/arch/x86/kernel/entry_64.S
> > +++ b/arch/x86/kernel/entry_64.S
> > @@ -615,6 +615,7 @@ GLOBAL(system_call_after_swapgs)
> > movq
Jiri Slaby writes:
> OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
> diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
> index 1e96c3628bf2..a03b1e9d2de3 100644
> --- a/arch/x86/kernel/entry_64.S
> +++ b/arch/x86/kernel/entry_64.S
> @@ -615,6 +615,7 @@ GLOBAL(syste
On 04/30/2014 04:56 PM, Steven Rostedt wrote:
> On Wed, 30 Apr 2014 16:30:36 +0200
> Jiri Slaby wrote:
>> --- a/arch/x86/kernel/entry_64.S
>> +++ b/arch/x86/kernel/entry_64.S
>> @@ -615,6 +615,7 @@ GLOBAL(system_call_after_swapgs)
>> movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
>> movq %rcx,RIP-
On Wed, 30 Apr 2014 16:30:36 +0200
Jiri Slaby wrote:
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 25d2c6f7325e..789a4c870ab3 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -130,6 +130,7 @@ config X86
> select HAVE_CC_STACKPROTECTOR
> select GENERIC_CPU_AUT
From: Jiri Kosina
Provide initial implementation. We are now able to do ftrace-based
runtime patching of the kernel code.
In addition to that, we will provide a kgr_patcher module in the next
patch to test the functionality.
Limitations/TODOs:
- rmmod of the module that provides the patch is n
13 matches
Mail list logo
