diff options
| author | Thomas Gleixner | 2022-11-16 17:27:13 +0106 |
|---|---|---|
| committer | Petr Mladek | 2022-12-02 11:24:59 +0100 |
| commit | 9e409c4778afbbd44759e56ec4bbed839fd31909 (patch) | |
| tree | 01fe724f81e59779518c7f1cbc8b5c83ef7c3804 /drivers | |
| parent | 51f5f78a4f804aeb73cf12a7cbba6e5198abd908 (diff) | |
serial: kgdboc: Lock console list in probe function
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20221116162152.193147-2-john.ogness@linutronix.de
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/kgdboc.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |