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/spi/Kconfig | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 drivers/media/spi/Kconfig (limited to 'drivers/media/spi/Kconfig') diff --git a/drivers/media/spi/Kconfig b/drivers/media/spi/Kconfig new file mode 100644 index 000000000..4656afae5 --- /dev/null +++ b/drivers/media/spi/Kconfig @@ -0,0 +1,26 @@ +# SPDX-License-Identifier: GPL-2.0-only +if VIDEO_DEV && SPI + +comment "SPI I2C drivers auto-selected by 'Autoselect ancillary drivers'" + depends on MEDIA_HIDE_ANCILLARY_SUBDRV && SPI + +menu "Media SPI Adapters" + +config CXD2880_SPI_DRV + tristate "Sony CXD2880 SPI support" + depends on DVB_CORE && SPI + default m if !MEDIA_SUBDRV_AUTOSELECT + help + Choose if you would like to have SPI interface support for Sony CXD2880. + +config VIDEO_GS1662 + tristate "Gennum Serializers video" + depends on SPI && VIDEO_DEV + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + help + Enable the GS1662 driver which serializes video streams. + +endmenu + +endif -- cgit v1.3.1