Re: [PATCH] tty: serial: uartlite: avoid null pointer dereference during rmmod

On Tue, May 14, 2019 at 11:32:19AM +0800, Kefeng Wang wrote: > After commit 415b43bdb008 "tty: serial: uartlite: Move uart register to > probe", calling uart_unregister_driver unconditionally will trigger a > null pointer dereference due to ulite_uart_driver may not registed. > > CPU: 1 PID: 375

[PATCH] tty: serial: uartlite: avoid null pointer dereference during rmmod

After commit 415b43bdb008 "tty: serial: uartlite: Move uart register to probe", calling uart_unregister_driver unconditionally will trigger a null pointer dereference due to ulite_uart_driver may not registed. CPU: 1 PID: 3755 Comm: syz-executor.0 Not tainted 5.1.0+ #28 Hardware name: QEMU Sta