Andrey Ryabinin <ryabinin....@gmail.com> writes:
> 2015-08-26 11:26 GMT+03:00 Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>:
>> Conditionalize the check using #ifdef
>>
>> Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
>> ---
>> mm/kasan/report.c | 11 ++++++++---
>> 1 file changed, 8 insertions(+), 3 deletions(-)
>>
>> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
>> index e07c94fbd0ac..71ce7548d914 100644
>> --- a/mm/kasan/report.c
>> +++ b/mm/kasan/report.c
>> @@ -85,9 +85,14 @@ static void print_error_description(struct
>> kasan_access_info *info)
>>
>> static inline bool kernel_or_module_addr(const void *addr)
>> {
>> - return (addr >= (void *)_stext && addr < (void *)_end)
>> - || (addr >= (void *)MODULES_VADDR
>> - && addr < (void *)MODULES_END);
>> + if (addr >= (void *)_stext && addr < (void *)_end)
>> + return true;
>> +#if defined(CONFIG_MODULES) && defined(MODULES_VADDR)
>> + if (addr >= (void *)MODULES_VADDR
>> + && addr < (void *)MODULES_END)
>> + return true;
>> +#endif
>
> I don't think that this is correct change.
> On ppc64 modules are in VMALLOC, so you should check for this.
> Yes, we don't handle VMALLOC now, but we will at some point.
>
> So I think we should use is_module_address() here.
> It will be slower, but we don't care about performance in error reporting
> route.
Will fix in the next update.
-aneesh
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