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/Makefile | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 drivers/mtd/Makefile (limited to 'drivers/mtd/Makefile') diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile new file mode 100644 index 000000000..7b6dd53e8 --- /dev/null +++ b/drivers/mtd/Makefile @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the memory technology device drivers. +# + +# Core functionality. +obj-$(CONFIG_MTD) += mtd.o +mtd-y := mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o mtdchar.o +mtd-$(CONFIG_MTD_VIRT_CONCAT) += mtd_virt_concat.o + +obj-y += parsers/ + +# 'Users' - code which presents functionality to userspace. +obj-$(CONFIG_MTD_BLKDEVS) += mtd_blkdevs.o +obj-$(CONFIG_MTD_BLOCK) += mtdblock.o +obj-$(CONFIG_MTD_BLOCK_RO) += mtdblock_ro.o +obj-$(CONFIG_FTL) += ftl.o +obj-$(CONFIG_NFTL) += nftl.o +obj-$(CONFIG_INFTL) += inftl.o +obj-$(CONFIG_RFD_FTL) += rfd_ftl.o +obj-$(CONFIG_SSFDC) += ssfdc.o +obj-$(CONFIG_SM_FTL) += sm_ftl.o +obj-$(CONFIG_MTD_OOPS) += mtdoops.o +obj-$(CONFIG_MTD_PSTORE) += mtdpstore.o +obj-$(CONFIG_MTD_SWAP) += mtdswap.o + +nftl-objs := nftlcore.o nftlmount.o +inftl-objs := inftlcore.o inftlmount.o + +obj-y += chips/ lpddr/ maps/ devices/ nand/ tests/ + +obj-$(CONFIG_MTD_SPI_NOR) += spi-nor/ +obj-$(CONFIG_MTD_UBI) += ubi/ +obj-$(CONFIG_MTD_HYPERBUS) += hyperbus/ -- cgit v1.3.1