Randy Dunlap bf6d0e32f3 serial: uartlite: fix exit path null pointer ... commit a553add084 upstream. Call uart_unregister_driver() conditionally instead of unconditionally, only if it has been previously registered. This uses driver.state, just as the sh-sci.c driver does. Fixes this null pointer dereference in tty_unregister_driver(), since the 'driver' argument is null: general protection fault: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:tty_unregister_driver+0x25/0x1d0 Fixes: 238b8721a5 ("[PATCH] serial uartlite driver") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: stable <stable@vger.kernel.org> Cc: Peter Korsgaard <jacmet@sunsite.dk> Link: https://lore.kernel.org/r/9c8e6581-6fcc-a595-0897-4d90f5d710df@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-10-17 13:43:29 -07:00
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hvc	hvc_opal: don't set tb_ticks_per_usec in udbg_init_opal_common()	2018-08-03 07:50:25 +02:00
ipwireless	tty: ipwireless: fix missing checks for ioremap	2019-05-31 06:47:32 -07:00
serdev	serdev: fix memleak on module unload	2018-07-08 15:30:47 +02:00
serial	serial: uartlite: fix exit path null pointer	2019-10-17 13:43:29 -07:00
vt	tty/vt: fix write/write race in ioctl(KDSKBSENT) handler	2019-05-21 18:50:18 +02:00
Kconfig	tty: ldisc: add sysctl to prevent autoloading of ldiscs	2019-04-17 08:37:45 +02:00
Makefile	…
amiserial.c	…
bfin_jtag_comm.c	…
cyclades.c	…
ehv_bytechan.c	…
goldfish.c	…
isicom.c	…
metag_da.c	…
mips_ejtag_fdc.c	…
moxa.c	…
moxa.h	…
mxser.c	…
mxser.h	…
n_gsm.c	…
n_hdlc.c	tty/n_hdlc: fix __might_sleep warning	2019-01-31 08:13:44 +01:00
n_null.c	…
n_r3964.c	…
n_tracerouter.c	…
n_tracesink.c	…
n_tracesink.h	…
n_tty.c	tty: wipe buffer if not echoing data	2018-12-01 09:42:59 +01:00
nozomi.c	…
pty.c	pty: fix O_CLOEXEC for TIOCGPTPEER	2018-08-24 13:08:55 +02:00
rocket.c	tty: rocket: fix incorrect forward declaration of 'rp_init()'	2019-07-10 09:54:42 +02:00
rocket.h	…
rocket_int.h	…
synclink.c	…
synclink_gt.c	…
synclinkmp.c	…
sysrq.c	…
tty_audit.c	…
tty_baudrate.c	termios, tty/tty_baudrate.c: fix buffer overrun	2018-11-21 09:24:10 +01:00
tty_buffer.c	tty: increase the default flip buffer limit to 2*640K	2019-04-05 22:31:37 +02:00
tty_io.c	tty: ldisc: add sysctl to prevent autoloading of ldiscs	2019-04-17 08:37:45 +02:00
tty_ioctl.c	…
tty_jobctrl.c	…
tty_ldisc.c	tty: ldisc: add sysctl to prevent autoloading of ldiscs	2019-04-17 08:37:45 +02:00
tty_ldsem.c	tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop	2019-08-16 10:13:55 +02:00
tty_mutex.c	…
tty_port.c	tty: do not set TTY_IO_ERROR flag if console port	2018-12-13 09:18:53 +01:00
vcc.c	…