| Message ID | 20221019145600.1282823-2-john.ogness@linutronix.de |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [printk,v2,01/38] serial: kgdboc: Lock console list in probe function | expand |
On Wed, Oct 19, 2022 at 05:01:23PM +0206, John Ogness wrote: > From: Thomas Gleixner <tglx@linutronix.de> > > Unprotected list walks are not necessarily safe. > > Signed-off-by: Thomas Gleixner <tglx@linutronix.de> > Signed-off-by: John Ogness <john.ogness@linutronix.de> > Reviewed-by: Petr Mladek <pmladek@suse.com> > --- > drivers/tty/serial/kgdboc.c | 2 ++ > 1 file changed, 2 insertions(+) Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c index 7aa37be3216a..e76f0186c335 100644 --- a/drivers/tty/serial/kgdboc.c +++ b/drivers/tty/serial/kgdboc.c @@ -193,6 +193,7 @@ static int configure_kgdboc(void) if (!p) goto noconfig; + console_lock(); for_each_console(cons) { int idx; if (cons->device && cons->device(cons, &idx) == p && @@ -201,6 +202,7 @@ static int configure_kgdboc(void) break; } } + console_unlock(); kgdb_tty_driver = p; kgdb_tty_line = tty_line;