[PATCH v2 6/7] sections: Add new is_kernel() and is_kernel_text()
Kefeng Wang
wangkefeng.wang at huawei.com
Thu Jul 29 12:02:55 AEST 2021
On 2021/7/28 23:32, Steven Rostedt wrote:
> On Wed, 28 Jul 2021 16:13:19 +0800
> Kefeng Wang <wangkefeng.wang at huawei.com> wrote:
>
>> @@ -64,8 +64,7 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
>>
>> int notrace core_kernel_text(unsigned long addr)
>> {
>> - if (addr >= (unsigned long)_stext &&
>> - addr < (unsigned long)_etext)
>> + if (is_kernel_text(addr))
> Perhaps this was a bug, and these functions should be checking the gate
> area as well, as that is part of kernel text.
Ok, I would fix this if patch5 is reviewed well.
>
> -- Steve
>
>
>> return 1;
>>
>> if (system_state < SYSTEM_RUNNING &&
>> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
>> index 884a950c7026..88f5b0c058b7 100644
>> --- a/mm/kasan/report.c
>> +++ b/mm/kasan/report.c
>> @@ -235,7 +235,7 @@ static void describe_object(struct kmem_cache *cache, void *object,
>>
>> static inline bool kernel_or_module_addr(const void *addr)
>> {
>> - if (addr >= (void *)_stext && addr < (void *)_end)
>> + if (is_kernel((unsigned long)addr))
>> return true;
>> if (is_module_address((unsigned long)addr))
>> return true;
>> --
> .
>
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