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/usb/usbip/Makefile | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 drivers/usb/usbip/Makefile (limited to 'drivers/usb/usbip/Makefile') diff --git a/drivers/usb/usbip/Makefile b/drivers/usb/usbip/Makefile new file mode 100644 index 000000000..f4c8f3840 --- /dev/null +++ b/drivers/usb/usbip/Makefile @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: GPL-2.0 +ccflags-$(CONFIG_USBIP_DEBUG) := -DDEBUG + +obj-$(CONFIG_USBIP_CORE) += usbip-core.o +usbip-core-y := usbip_common.o usbip_event.o + +obj-$(CONFIG_USBIP_VHCI_HCD) += vhci-hcd.o +vhci-hcd-y := vhci_sysfs.o vhci_tx.o vhci_rx.o vhci_hcd.o + +obj-$(CONFIG_USBIP_HOST) += usbip-host.o +usbip-host-y := stub_dev.o stub_main.o stub_rx.o stub_tx.o + +obj-$(CONFIG_USBIP_VUDC) += usbip-vudc.o +usbip-vudc-y := vudc_dev.o vudc_sysfs.o vudc_tx.o vudc_rx.o vudc_transfer.o vudc_main.o -- cgit v1.3.1