On 2022/11/10 19:27, Linus Walleij wrote:
On Thu, Nov 10, 2022 at 9:22 AM Zeng Heng <zengheng4@xxxxxxxxxx> wrote:Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer. Fixes: 57291ce295c0 ("pinctrl: core device tree mapping table parsing support") Signed-off-by: Zeng Heng <zengheng4@xxxxxxxxxx>Patch applied for fixes. Interesting that you managed to locate this using *kasan* of all things, it kind of requires that you manage to run out of memory exactly at this time... Yours, Linus Walleij
yes, actually it runs with *kasan* & companied with fault-inject into every single time.
Best regards, Zeng Heng
