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 --- include/dt-bindings/clock/stm32fx-clock.h | 63 +++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 include/dt-bindings/clock/stm32fx-clock.h (limited to 'include/dt-bindings/clock/stm32fx-clock.h') diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h new file mode 100644 index 000000000..b6ff9c68c --- /dev/null +++ b/include/dt-bindings/clock/stm32fx-clock.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * stm32fx-clock.h + * + * Copyright (C) 2016 STMicroelectronics + * Author: Gabriel Fernandez for STMicroelectronics. + */ + +/* + * List of clocks which are not derived from system clock (SYSCLOCK) + * + * The index of these clocks is the secondary index of DT bindings + * (see Documentation/devicetree/bindings/clock/st,stm32-rcc.yaml) + * + * e.g: + ; +*/ + +#ifndef _DT_BINDINGS_CLK_STMFX_H +#define _DT_BINDINGS_CLK_STMFX_H + +#define SYSTICK 0 +#define FCLK 1 +#define CLK_LSI 2 +#define CLK_LSE 3 +#define CLK_HSE_RTC 4 +#define CLK_RTC 5 +#define PLL_VCO_I2S 6 +#define PLL_VCO_SAI 7 +#define CLK_LCD 8 +#define CLK_I2S 9 +#define CLK_SAI1 10 +#define CLK_SAI2 11 +#define CLK_I2SQ_PDIV 12 +#define CLK_SAIQ_PDIV 13 +#define CLK_HSI 14 +#define CLK_SYSCLK 15 +#define CLK_F469_DSI 16 + +#define END_PRIMARY_CLK 17 + +#define CLK_HDMI_CEC 16 +#define CLK_SPDIF 17 +#define CLK_USART1 18 +#define CLK_USART2 19 +#define CLK_USART3 20 +#define CLK_UART4 21 +#define CLK_UART5 22 +#define CLK_USART6 23 +#define CLK_UART7 24 +#define CLK_UART8 25 +#define CLK_I2C1 26 +#define CLK_I2C2 27 +#define CLK_I2C3 28 +#define CLK_I2C4 29 +#define CLK_LPTIMER 30 +#define CLK_PLL_SRC 31 +#define CLK_DFSDM1 32 +#define CLK_ADFSDM1 33 +#define CLK_F769_DSI 34 +#define END_PRIMARY_CLK_F7 35 + +#endif -- cgit v1.3.1