From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/media/usb/Kconfig | 72 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 drivers/media/usb/Kconfig (limited to 'drivers/media/usb/Kconfig') diff --git a/drivers/media/usb/Kconfig b/drivers/media/usb/Kconfig new file mode 100644 index 000000000..813171d25 --- /dev/null +++ b/drivers/media/usb/Kconfig @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: GPL-2.0-only + +if USB && MEDIA_SUPPORT + +menuconfig MEDIA_USB_SUPPORT + bool "Media USB Adapters" + help + Enable media drivers for USB bus. + If you have such devices, say Y. + +if MEDIA_USB_SUPPORT + +if MEDIA_CAMERA_SUPPORT + comment "Webcam devices" + +source "drivers/media/usb/gspca/Kconfig" +source "drivers/media/usb/pwc/Kconfig" +source "drivers/media/usb/s2255/Kconfig" +source "drivers/media/usb/usbtv/Kconfig" +source "drivers/media/usb/uvc/Kconfig" + +endif + +if MEDIA_ANALOG_TV_SUPPORT + comment "Analog TV USB devices" + +source "drivers/media/usb/go7007/Kconfig" +source "drivers/media/usb/hdpvr/Kconfig" +source "drivers/media/usb/pvrusb2/Kconfig" +source "drivers/media/usb/stk1160/Kconfig" + +endif + +if (MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT) + comment "Analog/digital TV USB devices" + +source "drivers/media/usb/au0828/Kconfig" +source "drivers/media/usb/cx231xx/Kconfig" + +endif + +if I2C && MEDIA_DIGITAL_TV_SUPPORT + comment "Digital TV USB devices" + +source "drivers/media/usb/as102/Kconfig" +source "drivers/media/usb/b2c2/Kconfig" +source "drivers/media/usb/dvb-usb-v2/Kconfig" +source "drivers/media/usb/dvb-usb/Kconfig" +source "drivers/media/usb/siano/Kconfig" +source "drivers/media/usb/ttusb-budget/Kconfig" +source "drivers/media/usb/ttusb-dec/Kconfig" + +endif + +if (MEDIA_CAMERA_SUPPORT || MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT) + comment "Webcam, TV (analog/digital) USB devices" + +source "drivers/media/usb/em28xx/Kconfig" + +endif + +if MEDIA_SDR_SUPPORT + comment "Software defined radio USB devices" + +source "drivers/media/usb/airspy/Kconfig" +source "drivers/media/usb/hackrf/Kconfig" +source "drivers/media/usb/msi2500/Kconfig" + +endif + +endif #MEDIA_USB_SUPPORT +endif #USB -- cgit v1.3.1