On Mon, Oct 07, 2024 at 12:25:38PM +0200, Linus Walleij wrote:
On Mon, Oct 7, 2024 at 7:25 AM Melon Liu melon1335@163.com 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@vger.kernel.org Signed-off-by: Melon Liu melon1335@163.org
Patch looks correct to me: Reviewed-by: Linus Walleij linus.walleij@linaro.org
Can you put the patch into Russell's patch tracker after some time for review, if no issues are found, please?
Ok.
Thanks!
Yours, Linus Walleij