Re: [tip:x86/mm] [x86/mm] 1248fb6a82: Kernel_panic-not_syncing:kasan_populate_pmd:Failed_to_allocate_page

[Andrey Ryabinin]

On 10/27/22 18:12, Dave Hansen wrote:
> On 10/25/22 08:39, Andrey Ryabinin wrote:
>> KASAN tries to allocate shadow memory for the whole cpu entry area.
>> The size is CPU_ENTRY_AREA_MAP_SIZE/8 and this is obviously fails after your patch.
>> The fix this might be something like this:
>>
>> ---
>>  arch/x86/include/asm/kasan.h |  2 ++
>>  arch/x86/mm/cpu_entry_area.c |  3 +++
>>  arch/x86/mm/kasan_init_64.c  | 16 +++++++++++++---
>>  3 files changed, 18 insertions(+), 3 deletions(-)
> 
> Andrey, if you have a minute, could you send this as a real patch, with
> a SoB?

Done, It slightly different because there was a bug in vaddr->nid calculation.