* Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> [240404 14:34]: > On Thu, Apr 04, 2024 at 09:54:15AM +0300, Tony Lindgren wrote: > > * Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> [240403 14:00]: > > > Probably we need to check if the port is still open... > > > > > > P.S. AFAIU the state / xmit is invalid pointer or so. > > > > > > Culprit line: serial_out(up, UART_TX, xmit->buf[xmit->tail]); > > > > Maybe we can set UPF_DEAD a bit earlier as below? > > We should do this under port_mutex. Otherwise we replace one race by another. Oh right.. And adding some better check in addition to UPF_DEAD would be better. Regards, Tony
