From 33a154a96e71a34a1bcca9f40da343dbbf7b38b4 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Thu, 1 Oct 2026 14:52:55 +0000 Subject: selftests/bpf: Test packet range of pointers sharing an id Add tests where two packet pointers share an id and tightening one pointer's umax from its var_off would put it less than their constant distance from the other's umax: with an index & 0x38 capped at 50, the base pointer keeps umax 50, so the pointer 8 bytes further on must keep umax 58, even though its known bits allow at most 56. These refused a valid program or accepted an out-of-bounds access before the fix: - check the advanced copy, load through the base: valid, was refused; - check the base, load the byte at base + 1 through a copy advanced by 8: was accepted; - check base + 4, load 4 bytes at base + 2 through base + 8: reads two bytes past the checked range, was accepted; - the same as the second with data_meta pointers checked against data: was accepted. These pass with and without the fix and cover nearby paths: - subtract an unknown scalar from a checked pointer and load below it (the range is kept across a new id); - reach a load through two paths whose checks cover 8 and 7 bytes after the loaded pointer; the second path must not be pruned by the first; - spill a copy of a pointer, check the pointer, fill the copy and load one byte past the checked range: the load is refused, and the copy has the range of the check. Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20261001145255.855630-2-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- drivers/mtd/hyperbus/Kconfig | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/mtd/hyperbus/Kconfig (limited to 'drivers/mtd/hyperbus/Kconfig') diff --git a/drivers/mtd/hyperbus/Kconfig b/drivers/mtd/hyperbus/Kconfig new file mode 100644 index 000000000..30ffc4c16 --- /dev/null +++ b/drivers/mtd/hyperbus/Kconfig @@ -0,0 +1,32 @@ +menuconfig MTD_HYPERBUS + tristate "HyperBus support" + depends on HAS_IOMEM + select MTD_CFI + select MTD_MAP_BANK_WIDTH_2 + select MTD_CFI_AMDSTD + select MTD_COMPLEX_MAPPINGS + help + This is the framework for the HyperBus which can be used by + the HyperBus Controller driver to communicate with + HyperFlash. See Cypress HyperBus specification for more + details + +if MTD_HYPERBUS + +config HBMC_AM654 + tristate "HyperBus controller driver for AM65x SoC" + depends on ARCH_K3 || COMPILE_TEST + select MULTIPLEXER + imply MUX_MMIO + help + This is the driver for HyperBus controller on TI's AM65x and + other SoCs + +config RPCIF_HYPERBUS + tristate "Renesas RPC-IF HyperBus driver" + depends on RENESAS_RPCIF + depends on MTD_CFI_BE_BYTE_SWAP + help + This option includes Renesas RPC-IF HyperBus support. + +endif # MTD_HYPERBUS -- cgit v1.3.1