Matthias Reichl, le mer. 04 nov. 2020 22:15:05 +0100, a ecrit: > > This looks like only a warning, did it actually crash? > > Yes, scroll down a bit, the null pointer oops followed almost > immediately after that > > [ 49.979043] BUG: kernel NULL pointer dereference, address: 0000000000000090 Ah, [ 50.102938] tty_init_dev+0xb5/0x1d0 probably the trailing release_tty call that does tty->port->itty = NULL; (itty is after a struct tty_bufhead + the tty pointer, that looks plausible). so probably an if (tty->port) in release_tty could help? Samuel