From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- lib/Kconfig.kasan | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 201 insertions(+) create mode 100644 lib/Kconfig.kasan (limited to 'lib/Kconfig.kasan') diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan new file mode 100644 index 000000000..be6ee6020 --- /dev/null +++ b/lib/Kconfig.kasan @@ -0,0 +1,201 @@ +# SPDX-License-Identifier: GPL-2.0-only + +# This config refers to the generic KASAN mode. +config HAVE_ARCH_KASAN + bool + +config HAVE_ARCH_KASAN_SW_TAGS + bool + +config HAVE_ARCH_KASAN_HW_TAGS + bool + +config HAVE_ARCH_KASAN_VMALLOC + bool + +config ARCH_DISABLE_KASAN_INLINE + bool + help + Disables both inline and stack instrumentation. Selected by + architectures that do not support these instrumentation types. + +config CC_HAS_KASAN_GENERIC + def_bool $(cc-option, -fsanitize=kernel-address) + +config CC_HAS_KASAN_SW_TAGS + def_bool $(cc-option, -fsanitize=kernel-hwaddress) + +# This option is only required for software KASAN modes. +# Old GCC versions do not have proper support for no_sanitize_address. +# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124 for details. +config CC_HAS_WORKING_NOSANITIZE_ADDRESS + def_bool !CC_IS_GCC || GCC_VERSION >= 80300 + +menuconfig KASAN + bool "KASAN: dynamic memory safety error detector" + depends on (((HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC) || \ + (HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS)) && \ + CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \ + HAVE_ARCH_KASAN_HW_TAGS + depends on (SLUB && SYSFS && !SLUB_TINY) || (SLAB && !DEBUG_SLAB) + select STACKDEPOT_ALWAYS_INIT + help + Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety + error detector designed to find out-of-bounds and use-after-free bugs. + + See Documentation/dev-tools/kasan.rst for details. + + For better error reports, also enable CONFIG_STACKTRACE. + +if KASAN + +choice + prompt "KASAN mode" + default KASAN_GENERIC + help + KASAN has three modes: + + 1. Generic KASAN (supported by many architectures, enabled with + CONFIG_KASAN_GENERIC, similar to userspace ASan), + 2. Software Tag-Based KASAN (arm64 only, based on software memory + tagging, enabled with CONFIG_KASAN_SW_TAGS, similar to userspace + HWASan), and + 3. Hardware Tag-Based KASAN (arm64 only, based on hardware memory + tagging, enabled with CONFIG_KASAN_HW_TAGS). + + See Documentation/dev-tools/kasan.rst for details about each mode. + +config KASAN_GENERIC + bool "Generic KASAN" + depends on HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC + depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS + select SLUB_DEBUG if SLUB + select CONSTRUCTORS + help + Enables Generic KASAN. + + Requires GCC 8.3.0+ or Clang. + + Consumes about 1/8th of available memory at kernel start and adds an + overhead of ~50% for dynamic allocations. + The performance slowdown is ~x3. + + (Incompatible with CONFIG_DEBUG_SLAB: the kernel does not boot.) + +config KASAN_SW_TAGS + bool "Software Tag-Based KASAN" + depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS + depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS + select SLUB_DEBUG if SLUB + select CONSTRUCTORS + help + Enables Software Tag-Based KASAN. + + Requires GCC 11+ or Clang. + + Supported only on arm64 CPUs and relies on Top Byte Ignore. + + Consumes about 1/16th of available memory at kernel start and + add an overhead of ~20% for dynamic allocations. + + May potentially introduce problems related to pointer casting and + comparison, as it embeds a tag into the top byte of each pointer. + + (Incompatible with CONFIG_DEBUG_SLAB: the kernel does not boot.) + +config KASAN_HW_TAGS + bool "Hardware Tag-Based KASAN" + depends on HAVE_ARCH_KASAN_HW_TAGS + depends on SLUB + help + Enables Hardware Tag-Based KASAN. + + Requires GCC 10+ or Clang 12+. + + Supported only on arm64 CPUs starting from ARMv8.5 and relies on + Memory Tagging Extension and Top Byte Ignore. + + Consumes about 1/32nd of available memory. + + May potentially introduce problems related to pointer casting and + comparison, as it embeds a tag into the top byte of each pointer. + +endchoice + +choice + prompt "Instrumentation type" + depends on KASAN_GENERIC || KASAN_SW_TAGS + default KASAN_OUTLINE + +config KASAN_OUTLINE + bool "Outline instrumentation" + help + Makes the compiler insert function calls that check whether the memory + is accessible before each memory access. Slower than KASAN_INLINE, but + does not bloat the size of the kernel's .text section so much. + +config KASAN_INLINE + bool "Inline instrumentation" + depends on !ARCH_DISABLE_KASAN_INLINE + help + Makes the compiler directly insert memory accessibility checks before + each memory access. Faster than KASAN_OUTLINE (gives ~x2 boost for + some workloads), but makes the kernel's .text size much bigger. + +endchoice + +config KASAN_STACK + bool "Stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST + depends on KASAN_GENERIC || KASAN_SW_TAGS + depends on !ARCH_DISABLE_KASAN_INLINE + default y if CC_IS_GCC + help + Disables stack instrumentation and thus KASAN's ability to detect + out-of-bounds bugs in stack variables. + + With Clang, stack instrumentation has a problem that causes excessive + stack usage, see https://bugs.llvm.org/show_bug.cgi?id=38809. Thus, + with Clang, this option is deemed unsafe. + + This option is always disabled when compile-testing with Clang to + avoid cluttering the log with stack overflow warnings. + + With GCC, enabling stack instrumentation is assumed to be safe. + + If the architecture disables inline instrumentation via + ARCH_DISABLE_KASAN_INLINE, stack instrumentation gets disabled + as well, as it adds inline-style instrumentation that is run + unconditionally. + +config KASAN_VMALLOC + bool "Check accesses to vmalloc allocations" + depends on HAVE_ARCH_KASAN_VMALLOC + help + Makes KASAN check the validity of accesses to vmalloc allocations. + + With software KASAN modes, all types vmalloc allocations are + checked. Enabling this option leads to higher memory usage. + + With Hardware Tag-Based KASAN, only non-executable VM_ALLOC mappings + are checked. There is no additional memory usage. + +config KASAN_KUNIT_TEST + tristate "KUnit-compatible tests of KASAN bug detection capabilities" if !KUNIT_ALL_TESTS + depends on KASAN && KUNIT && TRACEPOINTS + default KUNIT_ALL_TESTS + help + A KUnit-based KASAN test suite. Triggers different kinds of + out-of-bounds and use-after-free accesses. Useful for testing whether + KASAN can detect certain bug types. + + For more information on KUnit and unit tests in general, please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + +config KASAN_MODULE_TEST + tristate "KUnit-incompatible tests of KASAN bug detection capabilities" + depends on m && KASAN && !KASAN_HW_TAGS + help + A part of the KASAN test suite that is not integrated with KUnit. + Incompatible with Hardware Tag-Based KASAN. + +endif # KASAN -- cgit v1.2.3