On Thu, Jun 29, 2017 at 7:42 PM, Li Kun wrote:
>
>
> on 2017/6/30 6:05, Kees Cook wrote:
>>
>> On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
>>>
>>> 在 2017/5/31 5:39, Kees Cook 写道:
+bool ex_handler_refcount(const struct exception_table_entry
On Thu, Jun 29, 2017 at 7:42 PM, Li Kun wrote:
>
>
> on 2017/6/30 6:05, Kees Cook wrote:
>>
>> On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
>>>
>>> 在 2017/5/31 5:39, Kees Cook 写道:
+bool ex_handler_refcount(const struct exception_table_entry *fixup,
+
on 2017/6/30 6:05, Kees Cook wrote:
On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
在 2017/5/31 5:39, Kees Cook 写道:
+bool ex_handler_refcount(const struct exception_table_entry *fixup,
+struct pt_regs *regs, int trapnr)
+{
+ int reset;
+
+
on 2017/6/30 6:05, Kees Cook wrote:
On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
在 2017/5/31 5:39, Kees Cook 写道:
+bool ex_handler_refcount(const struct exception_table_entry *fixup,
+struct pt_regs *regs, int trapnr)
+{
+ int reset;
+
+ /*
+* If
On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
> 在 2017/5/31 5:39, Kees Cook 写道:
>> +bool ex_handler_refcount(const struct exception_table_entry *fixup,
>> +struct pt_regs *regs, int trapnr)
>> +{
>> + int reset;
>> +
>> + /*
>> +*
On Wed, Jun 28, 2017 at 9:13 PM, Li Kun wrote:
> 在 2017/5/31 5:39, Kees Cook 写道:
>> +bool ex_handler_refcount(const struct exception_table_entry *fixup,
>> +struct pt_regs *regs, int trapnr)
>> +{
>> + int reset;
>> +
>> + /*
>> +* If we crossed from
Hi Kees,
在 2017/5/31 5:39, Kees Cook 写道:
This protection is a modified version of the x86 PAX_REFCOUNT defense
from PaX/grsecurity. This speeds up the refcount_t API by duplicating
the existing atomic_t implementation with a single instruction added to
detect if the refcount has wrapped past
Hi Kees,
在 2017/5/31 5:39, Kees Cook 写道:
This protection is a modified version of the x86 PAX_REFCOUNT defense
from PaX/grsecurity. This speeds up the refcount_t API by duplicating
the existing atomic_t implementation with a single instruction added to
detect if the refcount has wrapped past
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