On Sat, Sep 03, 2022 at 05:45:24PM -0700, Li Zhong wrote: > uart_port_check() will return NULL pointer when state->uart_port is > NULL. Check the return value before dereference it to avoid > null-pointer-dereference error because the locking does not guarantee > the return value is not NULL. Here we do not need unlock in the error > handling because the mutex_unlock() is called in callers. > > Signed-off-by: Li Zhong <floridsleeves@xxxxxxxxx> > --- > > v3: Add the reason why we need to check the NULL value in the commit > message. The bug is detected by static analysis. Great, then please follow the rules in Documentation/process/researcher-guidelines.rst and identify the tools you are using as well as everything else listed there. thanks, greg k-h
