From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/leds/trigger/ledtrig-default-on.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 drivers/leds/trigger/ledtrig-default-on.c (limited to 'drivers/leds/trigger/ledtrig-default-on.c') diff --git a/drivers/leds/trigger/ledtrig-default-on.c b/drivers/leds/trigger/ledtrig-default-on.c new file mode 100644 index 000000000..8678e64a5 --- /dev/null +++ b/drivers/leds/trigger/ledtrig-default-on.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * LED Kernel Default ON Trigger + * + * Copyright 2008 Nick Forbes + * + * Based on Richard Purdie's ledtrig-timer.c. + */ + +#include +#include +#include +#include +#include "../leds.h" + +static int defon_trig_activate(struct led_classdev *led_cdev) +{ + led_set_brightness_nosleep(led_cdev, led_cdev->max_brightness); + return 0; +} + +static struct led_trigger defon_led_trigger = { + .name = "default-on", + .activate = defon_trig_activate, +}; +module_led_trigger(defon_led_trigger); + +MODULE_AUTHOR("Nick Forbes "); +MODULE_DESCRIPTION("Default-ON LED trigger"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("ledtrig:default-on"); -- cgit v1.3.1