On Mon, Oct 7, 2024 at 7:25 AM Melon Liu <melon1335@xxxxxxx> wrote:
> When accessing the KASAN shadow area corresponding to the task stack
> which is in vmalloc space, the stack recursion would occur if the area`s
> page tables are unpopulated.
>
> Calltrace:
> ...
> __dabt_svc+0x4c/0x80
> __asan_load4+0x30/0x88
> do_translation_fault+0x2c/0x110
> do_DataAbort+0x4c/0xec
> __dabt_svc+0x4c/0x80
> __asan_load4+0x30/0x88
> do_translation_fault+0x2c/0x110
> do_DataAbort+0x4c/0xec
> __dabt_svc+0x4c/0x80
> sched_setscheduler_nocheck+0x60/0x158
> kthread+0xec/0x198
> ret_from_fork+0x14/0x28
>
> Fixes: 565cbaad83d ("ARM: 9202/1: kasan: support CONFIG_KASAN_VMALLOC")
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Melon Liu <melon1335@xxxxxxx>
Patch looks correct to me:
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Can you put the patch into Russell's patch tracker after some
time for review, if no issues are found, please?
Yours,
Linus Walleij
