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/Kconfig | 77 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 drivers/usb/usbip/Kconfig (limited to 'drivers/usb/usbip/Kconfig') diff --git a/drivers/usb/usbip/Kconfig b/drivers/usb/usbip/Kconfig new file mode 100644 index 000000000..50945b6fa --- /dev/null +++ b/drivers/usb/usbip/Kconfig @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0 + +config USBIP_CORE + tristate "USB/IP support" + depends on NET + select USB_COMMON + select SGL_ALLOC + help + This enables pushing USB packets over IP to allow remote + machines direct access to USB devices. It provides the + USB/IP core that is required by both drivers. + + For more details, and to get the userspace utility + programs, please see . + + To compile this as a module, choose M here: the module will + be called usbip-core. + + If unsure, say N. + +config USBIP_VHCI_HCD + tristate "VHCI hcd" + depends on USBIP_CORE && USB + help + This enables the USB/IP virtual host controller driver, + which is run on the remote machine. + + To compile this driver as a module, choose M here: the + module will be called vhci-hcd. + +config USBIP_VHCI_HC_PORTS + int "Number of ports per USB/IP virtual host controller" + range 1 15 + default 8 + depends on USBIP_VHCI_HCD + help + To increase number of ports available for USB/IP virtual + host controller driver, this defines number of ports per + USB/IP virtual host controller. + +config USBIP_VHCI_NR_HCS + int "Number of USB/IP virtual host controllers" + range 1 32 + default 1 + depends on USBIP_VHCI_HCD + help + To increase number of ports available for USB/IP virtual + host controller driver, this defines number of USB/IP + virtual host controllers as if adding physical host + controllers. + +config USBIP_HOST + tristate "Host driver" + depends on USBIP_CORE && USB + help + This enables the USB/IP host driver, which is run on the + machine that is sharing the USB devices. + + To compile this driver as a module, choose M here: the + module will be called usbip-host. + +config USBIP_VUDC + tristate "VUDC driver" + depends on USBIP_CORE && USB_GADGET + help + This enables the USB/IP virtual USB device controller + driver, which is run on the host machine, allowing the + machine itself to act as a device. + + To compile this driver as a module, choose M here: the + module will be called usbip-vudc. + +config USBIP_DEBUG + bool "Debug messages for USB/IP" + depends on USBIP_CORE + help + This enables the debug messages from the USB/IP drivers. -- cgit v1.3.1