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2025-08-21selftests/bpf: Add uprobe syscall sigill signal testJiri Olsa1-0/+36
Make sure that calling uprobe syscall from outside uprobe trampoline results in sigill signal. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20250720112133.244369-17-jolsa@kernel.org
2025-08-21selftests/bpf: Add hit/attach/detach race optimized uprobe testJiri Olsa1-0/+108
Adding test that makes sure parallel execution of the uprobe and attach/detach of optimized uprobe on it works properly. By default the test runs for 500ms, which is adjustable by using BPF_SELFTESTS_UPROBE_SYSCALL_RACE_MSEC env variable. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20250720112133.244369-16-jolsa@kernel.org
2025-08-21selftests/bpf: Add uprobe/usdt syscall testsJiri Olsa1-1/+283
Adding tests for optimized uprobe/usdt probes. Checking that we get expected trampoline and attached bpf programs get executed properly. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20250720112133.244369-15-jolsa@kernel.org
2025-08-21selftests/bpf: Rename uprobe_syscall_executed prog to test_uretprobe_multiJiri Olsa1-4/+8
Renaming uprobe_syscall_executed prog to test_uretprobe_multi to fit properly in the following changes that add more programs. Plus adding pid filter and increasing executed variable. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20250720112133.244369-14-jolsa@kernel.org
2025-08-21selftests/bpf: Reorg the uprobe_syscall test functionJiri Olsa1-22/+12
Adding __test_uprobe_syscall with non x86_64 stub to execute all the tests, so we don't need to keep adding non x86_64 stub functions for new tests. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20250720112133.244369-13-jolsa@kernel.org
2025-08-18Merge branch 'bpf-next/skb-meta-dynptr' into 'bpf-next/master'Martin KaFai Lau2-24/+196
Merge 'skb-meta-dynptr' branch into 'master' branch. No conflict. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2025-08-18selftests/bpf: Cover metadata access from a modified skb cloneJakub Sitnicki1-10/+113
Demonstrate that, when processing an skb clone, the metadata gets truncated if the program contains a direct write to either the payload or the metadata, due to an implicit unclone in the prologue, and otherwise the dynptr to the metadata is limited to being read-only. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-9-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Cover read/write to skb metadata at an offsetJakub Sitnicki1-0/+10
Exercise r/w access to skb metadata through an offset-adjusted dynptr, read/write helper with an offset argument, and a slice starting at an offset. Also check for the expected errors when the offset is out of bounds. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-8-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Cover write access to skb metadata via dynptrJakub Sitnicki1-5/+31
Add tests what exercise writes to skb metadata in two ways: 1. indirectly, using bpf_dynptr_write helper, 2. directly, using a read-write dynptr slice. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-7-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Cover read access to skb metadata via dynptrJakub Sitnicki1-0/+21
Exercise reading from SKB metadata area in two new ways: 1. indirectly, with bpf_dynptr_read(), and 2. directly, with bpf_dynptr_slice(). Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-6-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Parametrize test_xdp_context_tuntapJakub Sitnicki1-10/+21
We want to add more test cases to cover different ways to access the metadata area. Prepare for it. Pull up the skeleton management. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-5-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Pass just bpf_map to xdp_context_test helperJakub Sitnicki1-6/+5
Prepare for parametrizing the xdp_context tests. The assert_test_result helper doesn't need the whole skeleton. Pass just what it needs. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-4-8a39e636e0fb@cloudflare.com
2025-08-18selftests/bpf: Cover verifier checks for skb_meta dynptr typeJakub Sitnicki1-0/+2
dynptr for skb metadata behaves the same way as the dynptr for skb data with one exception - writes to skb_meta dynptr don't invalidate existing skb and skb_meta slices. Duplicate those the skb dynptr tests which we can, since bpf_dynptr_from_skb_meta kfunc can be called only from TC BPF, to cover the skb_meta dynptr verifier checks. Also add a couple of new tests (skb_data_valid_*) to ensure we don't invalidate the slices in the mentioned case, which are specific to skb_meta dynptr. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com> Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-3-8a39e636e0fb@cloudflare.com
2025-08-15selftests/bpf: Add test for DEVMAP reuseYureka Lilian1-0/+50
The test covers basic re-use of a pinned DEVMAP map, with both matching and mismatching parameters. Signed-off-by: Yureka Lilian <yuka@yuka.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20250814180113.1245565-4-yuka@yuka.dev
2025-08-06selftests/bpf: Test multi_st_ops and calling kfuncs from different programsAmery Hung1-0/+74
Test multi_st_ops and demonstrate how different bpf programs can call a kfuncs that refers to the struct_ops instance in the same source file by id. The id is defined as a global vairable and initialized before attaching the skeleton. Kfuncs that take the id can hide the argument with a macro to make it almost transparent to bpf program developers. The test involves two struct_ops returning different values from .test_1. In syscall and tracing programs, check if the correct value is returned by a kfunc that calls .test_1. Signed-off-by: Amery Hung <ameryhung@gmail.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20250806162540.681679-4-ameryhung@gmail.com
2025-08-01selftests/bpf: Test concurrent task local data key creationAmery Hung1-0/+105
Test thread-safety of tld_create_key(). Since tld_create_key() does not rely on locks but memory barriers and atomic operations to protect the shared metadata, the thread-safety of the function is non-trivial. Make sure concurrent tld_key_create(), both valid and invalid, can not race and corrupt metatada, which may leads to TLDs not being thread- specific or duplicate TLDs with the same name. Signed-off-by: Amery Hung <ameryhung@gmail.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/r/20250730185903.3574598-5-ameryhung@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-08-01selftests/bpf: Test basic task local data operationsAmery Hung1-0/+192
Test basic operations of task local data with valid and invalid tld_create_key(). For invalid calls, make sure they return the right error code and check that the TLDs are not inserted by running tld_get_data(" value_not_exists") on the bpf side. The call should a null pointer. For valid calls, first make sure the TLDs are created by calling tld_get_data() on the bpf side. The call should return a valid pointer. Finally, verify that the TLDs are indeed task-specific (i.e., their addresses do not overlap) with multiple user threads. This done by writing values unique to each thread, reading them from both user space and bpf, and checking if the value read back matches the value written. Signed-off-by: Amery Hung <ameryhung@gmail.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/r/20250730185903.3574598-4-ameryhung@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-08-01selftests/bpf: Introduce task local dataAmery Hung1-0/+386
Task local data defines an abstract storage type for storing task- specific data (TLD). This patch provides user space and bpf implementation as header-only libraries for accessing task local data. Task local data is a bpf task local storage map with two UPTRs: - tld_meta_u, shared by all tasks of a process, consists of the total count and size of TLDs and an array of metadata of TLDs. A TLD metadata contains the size and name. The name is used to identify a specific TLD in bpf programs. - u_tld_data points to a task-specific memory. It stores TLD data and the starting offset of data in a page. Task local design decouple user space and bpf programs. Since bpf program does not know the size of TLDs in compile time, u_tld_data is declared as a page to accommodate TLDs up to a page. As a result, while user space will likely allocate memory smaller than a page for actual TLDs, it needs to pin a page to kernel. It will pin the page that contains enough memory if the allocated memory spans across the page boundary. The library also creates another task local storage map, tld_key_map, to cache keys for bpf programs to speed up the access. Below are the core task local data API: User space BPF Define TLD TLD_DEFINE_KEY(), tld_create_key() - Init TLD object - tld_object_init() Get TLD data tld_get_data() tld_get_data() - TLD_DEFINE_KEY(), tld_create_key() A TLD is first defined by the user space with TLD_DEFINE_KEY() or tld_create_key(). TLD_DEFINE_KEY() defines a TLD statically and allocates just enough memory during initialization. tld_create_key() allows creating TLDs on the fly, but has a fix memory budget, TLD_DYN_DATA_SIZE. Internally, they all call __tld_create_key(), which iterates tld_meta_u->metadata to check if a TLD can be added. The total TLD size needs to fit into a page (limit of UPTR), and no two TLDs can have the same name. If a TLD can be added, u_tld_meta->cnt is increased using cmpxchg as there may be other concurrent __tld_create_key(). After a successful cmpxchg, the last available tld_meta_u->metadata now belongs to the calling thread. To prevent other threads from reading incomplete metadata while it is being updated, tld_meta_u->metadata->size is used to signal the completion. Finally, the offset, derived from adding up prior TLD sizes is then encapsulated as an opaque object key to prevent user misuse. The offset is guaranteed to be 8-byte aligned to prevent load/store tearing and allow atomic operations on it. - tld_get_data() User space programs can pass the key to tld_get_data() to get a pointer to the associated TLD. The pointer will remain valid for the lifetime of the thread. tld_data_u is lazily allocated on the first call to tld_get_data(). Trying to read task local data from bpf will result in -ENODATA during tld_object_init(). The task-specific memory need to be freed manually by calling tld_free() on thread exit to prevent memory leak or use TLD_FREE_DATA_ON_THREAD_EXIT. - tld_object_init() (BPF) BPF programs need to call tld_object_init() before calling tld_get_data(). This is to avoid redundant map lookup in tld_get_data() by storing pointers to the map values on stack. The pointers are encapsulated as tld_object. tld_key_map is also created on the first time tld_object_init() is called to cache TLD keys successfully fetched by tld_get_data(). bpf_task_storage_get(.., F_CREATE) needs to be retried since it may fail when another thread has already taken the percpu counter lock for the task local storage. - tld_get_data() (BPF) BPF programs can also get a pointer to a TLD with tld_get_data(). It uses the cached key in tld_key_map to locate the data in tld_data_u->data. If the cached key is not set yet (<= 0), __tld_fetch_key() will be called to iterate tld_meta_u->metadata and find the TLD by name. To prevent redundant string comparison in the future when the search fail, the tld_meta_u->cnt is stored in the non-positive range of the key. Next time, __tld_fetch_key() will be called only if there are new TLDs and the search will start from the newly added tld_meta_u->metadata using the old tld_meta_u-cnt. Signed-off-by: Amery Hung <ameryhung@gmail.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/r/20250730185903.3574598-3-ameryhung@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-30Merge tag 'bpf-next-6.17' of ↵Linus Torvalds31-193/+1513
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Pull bpf updates from Alexei Starovoitov: - Remove usermode driver (UMD) framework (Thomas Weißschuh) - Introduce Strongly Connected Component (SCC) in the verifier to detect loops and refine register liveness (Eduard Zingerman) - Allow 'void *' cast using bpf_rdonly_cast() and corresponding '__arg_untrusted' for global function parameters (Eduard Zingerman) - Improve precision for BPF_ADD and BPF_SUB operations in the verifier (Harishankar Vishwanathan) - Teach the verifier that constant pointer to a map cannot be NULL (Ihor Solodrai) - Introduce BPF streams for error reporting of various conditions detected by BPF runtime (Kumar Kartikeya Dwivedi) - Teach the verifier to insert runtime speculation barrier (lfence on x86) to mitigate speculative execution instead of rejecting the programs (Luis Gerhorst) - Various improvements for 'veristat' (Mykyta Yatsenko) - For CONFIG_DEBUG_KERNEL config warn on internal verifier errors to improve bug detection by syzbot (Paul Chaignon) - Support BPF private stack on arm64 (Puranjay Mohan) - Introduce bpf_cgroup_read_xattr() kfunc to read xattr of cgroup's node (Song Liu) - Introduce kfuncs for read-only string opreations (Viktor Malik) - Implement show_fdinfo() for bpf_links (Tao Chen) - Reduce verifier's stack consumption (Yonghong Song) - Implement mprog API for cgroup-bpf programs (Yonghong Song) * tag 'bpf-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (192 commits) selftests/bpf: Migrate fexit_noreturns case into tracing_failure test suite selftests/bpf: Add selftest for attaching tracing programs to functions in deny list bpf: Add log for attaching tracing programs to functions in deny list bpf: Show precise rejected function when attaching fexit/fmod_ret to __noreturn functions bpf: Fix various typos in verifier.c comments bpf: Add third round of bounds deduction selftests/bpf: Test invariants on JSLT crossing sign selftests/bpf: Test cross-sign 64bits range refinement selftests/bpf: Update reg_bound range refinement logic bpf: Improve bounds when s64 crosses sign boundary bpf: Simplify bounds refinement from s32 selftests/bpf: Enable private stack tests for arm64 bpf, arm64: JIT support for private stack bpf: Move bpf_jit_get_prog_name() to core.c bpf, arm64: Fix fp initialization for exception boundary umd: Remove usermode driver framework bpf/preload: Don't select USERMODE_DRIVER selftests/bpf: Fix test dynptr/test_dynptr_memset_xdp_chunks failure selftests/bpf: Fix test dynptr/test_dynptr_copy_xdp failure selftests/bpf: Increase xdp data size for arm64 64K page size ...
2025-07-30Merge tag 'net-next-6.17' of ↵Linus Torvalds2-10/+539
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core & protocols: - Wrap datapath globals into net_aligned_data, to avoid false sharing - Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container) - Add SO_INQ and SCM_INQ support to AF_UNIX - Add SIOCINQ support to AF_VSOCK - Add TCP_MAXSEG sockopt to MPTCP - Add IPv6 force_forwarding sysctl to enable forwarding per interface - Make TCP validation of whether packet fully fits in the receive window and the rcv_buf more strict. With increased use of HW aggregation a single "packet" can be multiple 100s of kB - Add MSG_MORE flag to optimize large TCP transmissions via sockmap, improves latency up to 33% for sockmap users - Convert TCP send queue handling from tasklet to BH workque - Improve BPF iteration over TCP sockets to see each socket exactly once - Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code - Support enabling kernel threads for NAPI processing on per-NAPI instance basis rather than a whole device. Fully stop the kernel NAPI thread when threaded NAPI gets disabled. Previously thread would stick around until ifdown due to tricky synchronization - Allow multicast routing to take effect on locally-generated packets - Add output interface argument for End.X in segment routing - MCTP: add support for gateway routing, improve bind() handling - Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink - Add a new neighbor flag ("extern_valid"), which cedes refresh responsibilities to userspace. This is needed for EVPN multi-homing where a neighbor entry for a multi-homed host needs to be synced across all the VTEPs among which the host is multi-homed - Support NUD_PERMANENT for proxy neighbor entries - Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM - Add sequence numbers to netconsole messages. Unregister netconsole's console when all net targets are removed. Code refactoring. Add a number of selftests - Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol should be used for an inbound SA lookup - Support inspecting ref_tracker state via DebugFS - Don't force bonding advertisement frames tx to ~333 ms boundaries. Add broadcast_neighbor option to send ARP/ND on all bonded links - Allow providing upcall pid for the 'execute' command in openvswitch - Remove DCCP support from Netfilter's conntrack - Disallow multiple packet duplications in the queuing layer - Prevent use of deprecated iptables code on PREEMPT_RT Driver API: - Support RSS and hashing configuration over ethtool Netlink - Add dedicated ethtool callbacks for getting and setting hashing fields - Add support for power budget evaluation strategy in PSE / Power-over-Ethernet. Generate Netlink events for overcurrent etc - Support DPLL phase offset monitoring across all device inputs. Support providing clock reference and SYNC over separate DPLL inputs - Support traffic classes in devlink rate API for bandwidth management - Remove rtnl_lock dependency from UDP tunnel port configuration Device drivers: - Add a new Broadcom driver for 800G Ethernet (bnge) - Add a standalone driver for Microchip ZL3073x DPLL - Remove IBM's NETIUCV device driver - Ethernet high-speed NICs: - Broadcom (bnxt): - support zero-copy Tx of DMABUF memory - take page size into account for page pool recycling rings - Intel (100G, ice, idpf): - idpf: XDP and AF_XDP support preparations - idpf: add flow steering - add link_down_events statistic - clean up the TSPLL code - preparations for live VM migration - nVidia/Mellanox: - support zero-copy Rx/Tx interfaces (DMABUF and io_uring) - optimize context memory usage for matchers - expose serial numbers in devlink info - support PCIe congestion metrics - Meta (fbnic): - add 25G, 50G, and 100G link modes to phylink - support dumping FW logs - Marvell/Cavium: - support for CN20K generation of the Octeon chips - Amazon: - add HW clock (without timestamping, just hypervisor time access) - Ethernet virtual: - VirtIO net: - support segmentation of UDP-tunnel-encapsulated packets - Google (gve): - support packet timestamping and clock synchronization - Microsoft vNIC: - add handler for device-originated servicing events - allow dynamic MSI-X vector allocation - support Tx bandwidth clamping - Ethernet NICs consumer, and embedded: - AMD: - amd-xgbe: hardware timestamping and PTP clock support - Broadcom integrated MACs (bcmgenet, bcmasp): - use napi_complete_done() return value to support NAPI polling - add support for re-starting auto-negotiation - Broadcom switches (b53): - support BCM5325 switches - add bcm63xx EPHY power control - Synopsys (stmmac): - lots of code refactoring and cleanups - TI: - icssg-prueth: read firmware-names from device tree - icssg: PRP offload support - Microchip: - lan78xx: convert to PHYLINK for improved PHY and MAC management - ksz: add KSZ8463 switch support - Intel: - support similar queue priority scheme in multi-queue and time-sensitive networking (taprio) - support packet pre-emption in both - RealTek (r8169): - enable EEE at 5Gbps on RTL8126 - Airoha: - add PPPoE offload support - MDIO bus controller for Airoha AN7583 - Ethernet PHYs: - support for the IPQ5018 internal GE PHY - micrel KSZ9477 switch-integrated PHYs: - add MDI/MDI-X control support - add RX error counters - add cable test support - add Signal Quality Indicator (SQI) reporting - dp83tg720: improve reset handling and reduce link recovery time - support bcm54811 (and its MII-Lite interface type) - air_en8811h: support resume/suspend - support PHY counters for QCA807x and QCA808x - support WoL for QCA807x - CAN drivers: - rcar_canfd: support for Transceiver Delay Compensation - kvaser: report FW versions via devlink dev info - WiFi: - extended regulatory info support (6 GHz) - add statistics and beacon monitor for Multi-Link Operation (MLO) - support S1G aggregation, improve S1G support - add Radio Measurement action fields - support per-radio RTS threshold - some work around how FIPS affects wifi, which was wrong (RC4 is used by TKIP, not only WEP) - improvements for unsolicited probe response handling - WiFi drivers: - RealTek (rtw88): - IBSS mode for SDIO devices - RealTek (rtw89): - BT coexistence for MLO/WiFi7 - concurrent station + P2P support - support for USB devices RTL8851BU/RTL8852BU - Intel (iwlwifi): - use embedded PNVM in (to be released) FW images to fix compatibility issues - many cleanups (unused FW APIs, PCIe code, WoWLAN) - some FIPS interoperability - MediaTek (mt76): - firmware recovery improvements - more MLO work - Qualcomm/Atheros (ath12k): - fix scan on multi-radio devices - more EHT/Wi-Fi 7 features - encapsulation/decapsulation offload - Broadcom (brcm80211): - support SDIO 43751 device - Bluetooth: - hci_event: add support for handling LE BIG Sync Lost event - ISO: add socket option to report packet seqnum via CMSG - ISO: support SCM_TIMESTAMPING for ISO TS - Bluetooth drivers: - intel_pcie: support Function Level Reset - nxpuart: add support for 4M baudrate - nxpuart: implement powerup sequence, reset, FW dump, and FW loading" * tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits) dpll: zl3073x: Fix build failure selftests: bpf: fix legacy netfilter options ipv6: annotate data-races around rt->fib6_nsiblings ipv6: fix possible infinite loop in fib6_info_uses_dev() ipv6: prevent infinite loop in rt6_nlmsg_size() ipv6: add a retry logic in net6_rt_notify() vrf: Drop existing dst reference in vrf_ip6_input_dst net/sched: taprio: align entry index attr validation with mqprio net: fsl_pq_mdio: use dev_err_probe selftests: rtnetlink.sh: remove esp4_offload after test vsock: remove unnecessary null check in vsock_getname() igb: xsk: solve negative overflow of nb_pkts in zerocopy mode stmmac: xsk: fix negative overflow of budget in zerocopy mode dt-bindings: ieee802154: Convert at86rf230.txt yaml format net: dsa: microchip: Disable PTP function of KSZ8463 net: dsa: microchip: Setup fiber ports for KSZ8463 net: dsa: microchip: Write switch MAC address differently for KSZ8463 net: dsa: microchip: Use different registers for KSZ8463 net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver dt-bindings: net: dsa: microchip: Add KSZ8463 switch support ...
2025-07-28selftests/bpf: Migrate fexit_noreturns case into tracing_failure test suiteKaFai Wan2-23/+33
Delete fexit_noreturns.c files and migrate the cases into tracing_failure.c files. The result: $ tools/testing/selftests/bpf/test_progs -t tracing_failure/fexit_noreturns #467/4 tracing_failure/fexit_noreturns:OK #467 tracing_failure:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: KaFai Wan <kafai.wan@linux.dev> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20250724151454.499040-5-kafai.wan@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-28selftests/bpf: Add selftest for attaching tracing programs to functions in ↵KaFai Wan1-0/+33
deny list The result: $ tools/testing/selftests/bpf/test_progs -t tracing_failure/tracing_deny #468/3 tracing_failure/tracing_deny:OK #468 tracing_failure:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: KaFai Wan <kafai.wan@linux.dev> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20250724151454.499040-4-kafai.wan@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-28Merge tag 'vfs-6.17-rc1.bpf' of ↵Linus Torvalds1-0/+145
git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs bpf updates from Christian Brauner: "These changes allow bpf to read extended attributes from cgroupfs. This is useful in redirecting AF_UNIX socket connections based on cgroup membership of the socket. One use-case is the ability to implement log namespaces in systemd so services and containers are redirected to different journals" * tag 'vfs-6.17-rc1.bpf' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: selftests/kernfs: test xattr retrieval selftests/bpf: Add tests for bpf_cgroup_read_xattr bpf: Mark cgroup_subsys_state->cgroup RCU safe bpf: Introduce bpf_cgroup_read_xattr to read xattr of cgroup's node kernfs: remove iattr_mutex
2025-07-28selftests/bpf: Update reg_bound range refinement logicPaul Chaignon1-0/+14
This patch updates the range refinement logic in the reg_bound test to match the new logic from the previous commit. Without this change, tests would fail because we end with more precise ranges than the tests expect. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Link: https://lore.kernel.org/r/b7f6b1fbe03373cca4e1bb6a113035a6cd2b3ff7.1753695655.git.paul.chaignon@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-25selftests/bpf: Increase xdp data size for arm64 64K page sizeYonghong Song1-2/+8
With arm64 64K page size, the following 4 subtests failed: #97/25 dynptr/test_probe_read_user_dynptr:FAIL #97/26 dynptr/test_probe_read_kernel_dynptr:FAIL #97/27 dynptr/test_probe_read_user_str_dynptr:FAIL #97/28 dynptr/test_probe_read_kernel_str_dynptr:FAIL These failures are due to function bpf_dynptr_check_off_len() in include/linux/bpf.h where there is a test if (len > size || offset > size - len) return -E2BIG; With 64K page size, the 'offset' is greater than 'size - len', which caused the test failure. For 64KB page size, this patch increased the xdp buffer size from 5000 to 90000. The above 4 test failures are fixed as 'size' value is increased. But it introduced two new failures: #97/4 dynptr/test_dynptr_copy_xdp:FAIL #97/12 dynptr/test_dynptr_memset_xdp_chunks:FAIL These two failures will be addressed in subsequent patches. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Link: https://patch.msgid.link/20250725043430.208469-1-yonghong.song@linux.dev
2025-07-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2-0/+69
Cross-merge networking fixes after downstream PR (net-6.16-rc8). Conflicts: drivers/net/ethernet/microsoft/mana/gdma_main.c 9669ddda18fb ("net: mana: Fix warnings for missing export.h header inclusion") 755391121038 ("net: mana: Allocate MSI-X vectors dynamically") https://lore.kernel.org/20250711130752.23023d98@canb.auug.org.au Adjacent changes: drivers/net/ethernet/ti/icssg/icssg_prueth.h 6e86fb73de0f ("net: ti: icssg-prueth: Fix buffer allocation for ICSSG") ffe8a4909176 ("net: ti: icssg-prueth: Read firmware-names from device tree") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after rc6Alexei Starovoitov2-0/+69
Cross-merge BPF and other fixes after downstream PR. No conflicts. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-16bpf/selftests: Add selftests for token infoTao Chen1-0/+44
A previous change added bpf_token_info to get token info with bpf_get_obj_info_by_fd, this patch adds a new test for token info. #461/12 token/bpf_token_info:OK Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Tao Chen <chen.dylane@linux.dev> Link: https://lore.kernel.org/r/20250716134654.1162635-2-chen.dylane@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-16selftests/bpf: Stress test attaching a BPF prog to another BPF progIlya Leoshkevich1-0/+67
Add a test that invokes a BPF prog in a loop, while concurrently attaching and detaching another BPF prog to and from it. This helps identifying race conditions in bpf_arch_text_poke(). Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Link: https://lore.kernel.org/r/20250716194524.48109-3-iii@linux.ibm.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-15selftests/bpf: Fix build error due to certain uninitialized variablesYonghong Song4-4/+4
With the latest llvm21 compiler, I hit several errors when building bpf selftests. Some of errors look like below: test_maps.c:565:40: error: variable 'val' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 565 | assert(bpf_map_update_elem(fd, NULL, &val, 0) < 0 && | ^~~ prog_tests/bpf_iter.c:400:25: error: variable 'c' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 400 | write(finish_pipe[1], &c, 1); | ^ Some other errors have similar the pattern as the above. These errors are fixed by initializing those variables properly. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250715185910.3659447-1-yonghong.song@linux.dev
2025-07-14selftests/bpf: Add tests for bucket resume logic in established socketsJordan Rife1-0/+293
Replicate the set of test cases used for UDP socket iterators to test similar scenarios for TCP established sockets. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Create established sockets in socket iterator testsJordan Rife1-4/+85
Prepare for bucket resume tests for established TCP sockets by creating established sockets. Collect socket fds from connect() and accept() sides and pass them to test cases. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Make ehash buckets configurable in socket iterator testsJordan Rife1-1/+18
Prepare for bucket resume tests for established TCP sockets by making the number of ehash buckets configurable. Subsequent patches force all established sockets into the same bucket by setting ehash_buckets to one. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Allow for iteration over multiple statesJordan Rife1-0/+3
Add parentheses around loopback address check to fix up logic and make the socket state filter configurable for the TCP socket iterators. Iterators can skip the socket state check by setting ss to 0. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Allow for iteration over multiple portsJordan Rife1-5/+2
Prepare to test TCP socket iteration over both listening and established sockets by allowing the BPF iterator programs to skip the port check. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-14selftests/bpf: Add tests for bucket resume logic in listening socketsJordan Rife1-0/+47
Replicate the set of test cases used for UDP socket iterators to test similar scenarios for TCP listening sockets. Signed-off-by: Jordan Rife <jordan@jrife.io> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
2025-07-07selftests/bpf: Negative test case for tail call mapPaul Chaignon1-0/+2
This patch adds a negative test case for the following verifier error. expected prog array map for tail call Acked-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/aGu0i1X_jII-3aFa@mail.gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-07bpf: rdonly_untrusted_mem for btf id walk pointer leafsEduard Zingerman1-1/+1
When processing a load from a PTR_TO_BTF_ID, the verifier calculates the type of the loaded structure field based on the load offset. For example, given the following types: struct foo { struct foo *a; int *b; } *p; The verifier would calculate the type of `p->a` as a pointer to `struct foo`. However, the type of `p->b` is currently calculated as a SCALAR_VALUE. This commit updates the logic for processing PTR_TO_BTF_ID to instead calculate the type of p->b as PTR_TO_MEM|MEM_RDONLY|PTR_UNTRUSTED. This change allows further dereferencing of such pointers (using probe memory instructions). Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20250704230354.1323244-3-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-03selftests/bpf: Add tests for prog streamsKumar Kartikeya Dwivedi1-0/+141
Add selftests to stress test the various facets of the stream API, memory allocation pattern, and ensuring dumping support is tested and functional. Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20250703204818.925464-13-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-03selftests/bpf: Add test cases for bpf_dynptr_memset()Ihor Solodrai1-0/+8
Add tests to verify the behavior of bpf_dynptr_memset(): * normal memset 0 * normal memset non-0 * memset with an offset * memset in dynptr that was adjusted * error: size overflow * error: offset+size overflow * error: readonly dynptr * memset into non-linear xdp dynptr Signed-off-by: Ihor Solodrai <isolodrai@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Link: https://lore.kernel.org/bpf/20250702210309.3115903-3-isolodrai@meta.com
2025-07-02selftests/bpf: Don't call fsopen() as privileged userMatteo Croce1-20/+21
In the BPF token example, the fsopen() syscall is called as privileged user. This is unneeded because fsopen() can be called also as unprivileged user from the user namespace. As the `fs_fd` file descriptor which was sent back and forth is still the same, keep it open instead of cloning and closing it twice via SCM_RIGHTS. cfr. https://github.com/systemd/systemd/pull/36134 Signed-off-by: Matteo Croce <teknoraver@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/bpf/20250701183123.31781-1-technoboy85@gmail.com
2025-07-02selftests/bpf: Add tests for bpf_cgroup_read_xattrSong Liu1-0/+145
Add tests for different scenarios with bpf_cgroup_read_xattr: 1. Read cgroup xattr from bpf_cgroup_from_id; 2. Read cgroup xattr from bpf_cgroup_ancestor; 3. Read cgroup xattr from css_iter; 4. Use bpf_cgroup_read_xattr in LSM hook security_socket_connect. 5. Use bpf_cgroup_read_xattr in cgroup program. Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/20250623063854.1896364-5-song@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-07-01selftests/bpf: Add negative test cases for snprintfPaul Chaignon1-0/+2
This patch adds a couple negative test cases with a trailing % at the end of the format string. The %p% case was fixed by the previous commit, whereas the %s% case was already successfully rejected before. Acked-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Link: https://lore.kernel.org/r/0669bf6eb4f9e5bb10e949d60311c06e2d942447.1751395489.git.paul.chaignon@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-06-27selftests/bpf: Fix cgroup_xattr/read_cgroupfs_xattrSong Liu1-95/+22
cgroup_xattr/read_cgroupfs_xattr has two issues: 1. cgroup_xattr/read_cgroupfs_xattr messes up lo without creating a netns first. This causes issue with other tests. Fix this by using a different hook (lsm.s/file_open) and not messing with lo. 2. cgroup_xattr/read_cgroupfs_xattr sets up cgroups without proper mount namespaces. Fix this by using the existing cgroup helpers. A new helper set_cgroup_xattr() is added to set xattr on cgroup files. Fixes: f4fba2d6d282 ("selftests/bpf: Add tests for bpf_cgroup_read_xattr") Reported-by: Alexei Starovoitov <ast@kernel.org> Closes: https://lore.kernel.org/bpf/CAADnVQ+iqMi2HEj_iH7hsx+XJAsqaMWqSDe4tzcGAnehFWA9Sw@mail.gmail.com/ Signed-off-by: Song Liu <song@kernel.org> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Tested-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20250627191221.765921-1-song@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-06-26Merge branch 'vfs-6.17.bpf' of ↵Alexei Starovoitov1-0/+145
https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Merge branch 'vfs-6.17.bpf' from vfs tree into bpf-next/master and resolve conflicts. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-06-26Merge tag 'for-netdev' of ↵Jakub Kicinski1-0/+91
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2025-06-27 We've added 6 non-merge commits during the last 8 day(s) which contain a total of 6 files changed, 120 insertions(+), 20 deletions(-). The main changes are: 1) Fix RCU usage in task_cls_state() for BPF programs using helpers like bpf_get_cgroup_classid_curr() outside of networking, from Charalampos Mitrodimas. 2) Fix a sockmap race between map_update and a pending workqueue from an earlier map_delete freeing the old psock where both pointed to the same psock->sk, from Jiayuan Chen. 3) Fix a data corruption issue when using bpf_msg_pop_data() in kTLS which failed to recalculate the ciphertext length, also from Jiayuan Chen. 4) Remove xdp_redirect_map{,_err} trace events since they are unused and also hide XDP trace events under CONFIG_BPF_SYSCALL, from Steven Rostedt. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: xdp: tracing: Hide some xdp events under CONFIG_BPF_SYSCALL xdp: Remove unused events xdp_redirect_map and xdp_redirect_map_err net, bpf: Fix RCU usage in task_cls_state() for BPF programs selftests/bpf: Add test to cover ktls with bpf_msg_pop_data bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls bpf, sockmap: Fix psock incorrectly pointing to sk ==================== Link: https://patch.msgid.link/20250626230111.24772-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-26selftests/bpf: Test array presets in veristatMykyta Yatsenko1-5/+122
Modify existing veristat tests to verify that array presets are applied as expected. Introduce few negative tests as well to check that common error modes are handled. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20250625165904.87820-4-mykyta.yatsenko5@gmail.com
2025-06-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after rc3Alexei Starovoitov1-0/+1612
Cross-merge BPF, perf and other fixes after downstream PRs. It restores BPF CI to green after critical fix commit bc4394e5e79c ("perf: Fix the throttle error of some clock events") No conflicts. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-06-26selftests/bpf: Add tests for string kfuncsViktor Malik1-0/+65
Add both positive and negative tests cases using string kfuncs added in the previous patches. Positive tests check that the functions work as expected. Negative tests pass various incorrect strings to the kfuncs and check for the expected error codes: -E2BIG when passing too long strings -EFAULT when trying to read inaccessible kernel memory -ERANGE when passing userspace pointers on arches with non-overlapping address spaces A majority of the tests use the RUN_TESTS helper which executes BPF programs with BPF_PROG_TEST_RUN and check for the expected return value. An exception to this are tests for long strings as we need to memset the long string from userspace (at least I haven't found an ergonomic way to memset it from a BPF program), which cannot be done using the RUN_TESTS infrastructure. Suggested-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Viktor Malik <vmalik@redhat.com> Link: https://lore.kernel.org/r/090451a2e60c9ae1dceb4d1bfafa3479db5c7481.1750917800.git.vmalik@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-06-25selftests/bpf: check operations on untrusted ro pointers to memEduard Zingerman1-0/+9
The following cases are tested: - it is ok to load memory at any offset from rdonly_untrusted_mem; - rdonly_untrusted_mem offset/bounds are not tracked; - writes into rdonly_untrusted_mem are forbidden; - atomic operations on rdonly_untrusted_mem are forbidden; - rdonly_untrusted_mem can't be passed as a memory argument of a helper of kfunc; - it is ok to use PTR_TO_MEM and PTR_TO_BTF_ID in a same load instruction. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20250625182414.30659-4-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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