kernel/linux.git/tools, branch master

Merge tag 'block-7.1-20260424' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-04-24T22:06:55+00:00

Pull block fixes from Jens Axboe: - Series for zloop, fixing a variety of issues - t10-pi code cleanup - Fix for a merge window regression with the bio memory allocation mask - Fix for a merge window regression in ublk, caused by an issue with the maple tree iteration code at teardown - ublk self tests additions - Zoned device pgmap fixes - Various little cleanups and fixes * tag 'block-7.1-20260424' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (21 commits) Revert "floppy: fix reference leak on platform_device_register() failure" ublk: avoid unpinning pages under maple tree spinlock ublk: refactor common helper ublk_shmem_remove_ranges() ublk: fix maple tree lockdep warning in ublk_buf_cleanup selftests: ublk: add ublk auto integrity test selftests: ublk: enable test_integrity_02.sh on fio 3.42 selftests: ublk: remove unused argument to _cleanup block: only restrict bio allocation gfp mask asked to block block/blk-throttle: Add WQ_PERCPU to alloc_workqueue users block: Add WQ_PERCPU to alloc_workqueue users block: relax pgmap check in bio_add_page for compatible zone device pages block: add pgmap check to biovec_phys_mergeable floppy: fix reference leak on platform_device_register() failure ublk: use unchecked copy helpers for bio page data t10-pi: reduce ref tag code duplication zloop: remove irq-safe locking zloop: factor out zloop_mark_{full,empty} helpers zloop: set RQF_QUIET when completing requests on deleted devices zloop: improve the unaligned write pointer warning zloop: use vfs_truncate ...

Merge tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2026-04-24T17:00:37+00:00

Pull RISC-V updates from Paul Walmsley: "There is one significant change outside arch/riscv in this pull request: the addition of a set of KUnit tests for strlen(), strnlen(), and strrchr(). Otherwise, the most notable changes are to add some RISC-V-specific string function implementations, to remove XIP kernel support, to add hardware error exception handling, and to optimize our runtime unaligned access speed testing. A few comments on the motivation for removing XIP support. It's been broken in the RISC-V kernel for months. The code is not easy to maintain. Furthermore, for XIP support to truly be useful for RISC-V, we think that compile-time feature switches would need to be added for many of the RISC-V ISA features and microarchitectural properties that are currently implemented with runtime patching. No one has stepped forward to take responsibility for that work, so many of us think it's best to remove it until clear use cases and champions emerge. Summary: - Add Kunit correctness testing and microbenchmarks for strlen(), strnlen(), and strrchr() - Add RISC-V-specific strnlen(), strchr(), strrchr() implementations - Add hardware error exception handling - Clean up and optimize our unaligned access probe code - Enable HAVE_IOREMAP_PROT to be able to use generic_access_phys() - Remove XIP kernel support - Warn when addresses outside the vmemmap range are passed to vmemmap_populate() - Update the ACPI FADT revision check to warn if it's not at least ACPI v6.6, which is when key RISC-V-specific tables were added to the specification - Increase COMMAND_LINE_SIZE to 2048 to match ARM64, x86, PowerPC, etc. - Make kaslr_offset() a static inline function, since there's no need for it to show up in the symbol table - Add KASLR offset and SATP to the VMCOREINFO ELF notes to improve kdump support - Add Makefile cleanup rule for vdso_cfi copied source files, and add a .gitignore for the build artifacts in that directory - Remove some redundant ifdefs that check Kconfig macros - Add missing SPDX license tag to the CFI selftest - Simplify UTS_MACHINE assignment in the RISC-V Makefile - Clarify some unclear comments and remove some superfluous comments - Fix various English typos across the RISC-V codebase" * tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits) riscv: Remove support for XIP kernel riscv: Reuse compare_unaligned_access() in check_vector_unaligned_access() riscv: Split out compare_unaligned_access() riscv: Reuse measure_cycles() in check_vector_unaligned_access() riscv: Split out measure_cycles() for reuse riscv: Clean up & optimize unaligned scalar access probe riscv: lib: add strrchr() implementation riscv: lib: add strchr() implementation riscv: lib: add strnlen() implementation lib/string_kunit: extend benchmarks to strnlen() and chr searches lib/string_kunit: add performance benchmark for strlen() lib/string_kunit: add correctness test for strrchr() lib/string_kunit: add correctness test for strnlen() lib/string_kunit: add correctness test for strlen() riscv: vdso_cfi: Add .gitignore for build artifacts riscv: vdso_cfi: Add clean rule for copied sources riscv: enable HAVE_IOREMAP_PROT riscv: mm: WARN_ON() for bad addresses in vmemmap_populate() riscv: acpi: update FADT revision check to 6.6 riscv: add hardware error trap handler support ...

Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

2026-04-24T16:54:45+00:00

Pull LoongArch updates from Huacai Chen: - Adjust build infrastructure for 32BIT/64BIT - Add HIGHMEM (PKMAP and FIX_KMAP) support - Show and handle CPU vulnerabilites correctly - Batch the icache maintenance for jump_label - Add more atomic instructions support for BPF JIT - Add more features (e.g. fsession) support for BPF trampoline - Some bug fixes and other small changes * tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits) selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch LoongArch: BPF: Add fsession support for trampolines LoongArch: BPF: Introduce emit_store_stack_imm64() helper LoongArch: BPF: Support up to 12 function arguments for trampoline LoongArch: BPF: Support small struct arguments for trampoline LoongArch: BPF: Open code and remove invoke_bpf_mod_ret() LoongArch: BPF: Support load-acquire and store-release instructions LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions LoongArch: BPF: Add the default case in emit_atomic() and rename it LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR LoongArch: Batch the icache maintenance for jump_label LoongArch: Add flush_icache_all()/local_flush_icache_all() LoongArch: Add spectre boundry for syscall dispatch table LoongArch: Show CPU vulnerabilites correctly LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist LoongArch: Use get_random_canary() for stack canary init LoongArch: Improve the logging of disabling KASLR LoongArch: Align FPU register state to 32 bytes LoongArch: Handle CONFIG_32BIT in syscall_get_arch() LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support ...

Merge tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-04-23T23:50:42+00:00

Pull networking fixes from Jakub Kicinski: "Including fixes from Netfilter. Steady stream of fixes. Last two weeks feel comparable to the two weeks before the merge window. Lots of AI-aided bug discovery. A newer big source is Sashiko/Gemini (Roman Gushchin's system), which points out issues in existing code during patch review (maybe 25% of fixes here likely originating from Sashiko). Nice thing is these are often fixed by the respective maintainers, not drive-bys. Current release - new code bugs: - kconfig: MDIO_PIC64HPSC should depend on ARCH_MICROCHIP Previous releases - regressions: - add async ndo_set_rx_mode and switch drivers which we promised to be called under the per-netdev mutex to it - dsa: remove duplicate netdev_lock_ops() for conduit ethtool ops - hv_sock: report EOF instead of -EIO for FIN - vsock/virtio: fix MSG_PEEK calculation on bytes to copy Previous releases - always broken: - ipv6: fix possible UAF in icmpv6_rcv() - icmp: validate reply type before using icmp_pointers - af_unix: drop all SCM attributes for SOCKMAP - netfilter: fix a number of bugs in the osf (OS fingerprinting) - eth: intel: fix timestamp interrupt configuration for E825C Misc: - bunch of data-race annotations" * tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (148 commits) rxrpc: Fix error handling in rxgk_extract_token() rxrpc: Fix re-decryption of RESPONSE packets rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets rxrpc: Fix missing validation of ticket length in non-XDR key preparsing rxgk: Fix potential integer overflow in length check rxrpc: Fix conn-level packet handling to unshare RESPONSE packets rxrpc: Fix potential UAF after skb_unshare() failure rxrpc: Fix rxkad crypto unalignment handling rxrpc: Fix memory leaks in rxkad_verify_response() net: rds: fix MR cleanup on copy error m68k: mvme147: Make me the maintainer net: txgbe: fix firmware version check selftests/bpf: check epoll readiness during reuseport migration tcp: call sk_data_ready() after listener migration vhost_net: fix sleeping with preempt-disabled in vhost_net_busy_poll() ipv6: Cap TLV scan in ip6_tnl_parse_tlv_enc_lim tipc: fix double-free in tipc_buf_append() llc: Return -EINPROGRESS from llc_ui_connect() ipv4: icmp: validate reply type before using icmp_pointers selftests/net: packetdrill: cover RFC 5961 5.2 challenge ACK on both edges ...

selftests/bpf: check epoll readiness during reuseport migration

2026-04-23T18:54:44+00:00

Inside migrate_dance(), add epoll checks around shutdown() to verify that the target listener is not ready before shutdown() and becomes ready immediately after shutdown() triggers migration. Cover TCP_ESTABLISHED and TCP_SYN_RECV. Exclude TCP_NEW_SYN_RECV as it depends on later handshake completion. Suggested-by: Kuniyuki Iwashima Reviewed-by: Kuniyuki Iwashima Signed-off-by: Zhenzhong Wu Link: https://patch.msgid.link/20260422024554.130346-3-jt26wzz@gmail.com Signed-off-by: Jakub Kicinski

selftests/net: packetdrill: cover RFC 5961 5.2 challenge ACK on both edges

2026-04-23T18:04:01+00:00

RFC 5961 Section 5.2 / RFC 793 Section 3.9 require a challenge ACK whenever an incoming SEG.ACK falls outside [SND.UNA - MAX.SND.WND, SND.NXT]. There is currently no packetdrill coverage for either edge. Add tcp_rfc5961_ack-out-of-window.pkt, which in a single passive-open connection exercises: - Upper edge (SEG.ACK > SND.NXT): peer ACKs data that was never sent before the server has transmitted anything. - Lower edge (SEG.ACK < SND.UNA - MAX.SND.WND): after the server has sent 2000 bytes (the peer-advertised rwnd forces two 1000-byte segments, both acknowledged), peer sends an ACK that is older than the acceptable window. Both cases must elicit a challenge ACK . The per-socket RFC 5961 Section 7 rate limit is disabled for the duration of the test so that both challenge ACKs can fire back-to-back. Signed-off-by: Jiayuan Chen Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20260422123605.320000-3-jiayuan.chen@linux.dev Signed-off-by: Jakub Kicinski

tcp: send a challenge ACK on SEG.ACK > SND.NXT

2026-04-23T18:04:00+00:00

RFC 5961 Section 5.2 validates an incoming segment's ACK value against the range [SND.UNA - MAX.SND.WND, SND.NXT] and states: "All incoming segments whose ACK value doesn't satisfy the above condition MUST be discarded and an ACK sent back." Commit 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack Mitigation") opted Linux into this mitigation and implements the challenge ACK on the lower side (SEG.ACK < SND.UNA - MAX.SND.WND), but the symmetric upper side (SEG.ACK > SND.NXT) still takes the pre-RFC-5961 path and silently returns SKB_DROP_REASON_TCP_ACK_UNSENT_DATA, even though RFC 793 Section 3.9 (now RFC 9293 Section 3.10.7.4) has always required: "If the ACK acknowledges something not yet sent (SEG.ACK > SND.NXT) then send an ACK, drop the segment, and return." Complete the mitigation by sending a challenge ACK on that branch, reusing the existing tcp_send_challenge_ack() path which already enforces the per-socket RFC 5961 Section 7 rate limit via __tcp_oow_rate_limited(). FLAG_NO_CHALLENGE_ACK is honoured for symmetry with the lower-edge case. Update the existing tcp_ts_recent_invalid_ack.pkt selftest, which drives this exact path, to consume the new challenge ACK. Fixes: 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack Mitigation") Signed-off-by: Jiayuan Chen Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20260422123605.320000-2-jiayuan.chen@linux.dev Signed-off-by: Jakub Kicinski

selftests: mptcp: add a check for sndbuf of S/C

2026-04-23T11:20:17+00:00

Add a new chk_sndbuf() helper to diag.sh that extracts the sndbuf (the 'tb' field from 'ss -m' skmem output) for both server and client MPTCP sockets, and verifies they are equal. Without the previous patch, it will fail: ''' 07 ....chk sndbuf server/client [FAIL] sndbuf S=20480 != C=2630656 ''' Signed-off-by: Gang Yan Reviewed-by: Matthieu Baerts (NGI0) Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260420-net-mptcp-sync-sndbuf-accept-v1-2-e3523e3aeb44@kernel.org Signed-off-by: Paolo Abeni

selftests: ublk: add ublk auto integrity test

2026-04-23T10:52:43+00:00

The end-to-end integrity ublk selftest test_integrity_02 requires a relatively recent fio version to support I/O with integrity buffers. Add a version test_integrity_03 that uses the block layer's auto integrity path instead. The auto integrity code doesn't check the application tag, and doesn't indicate the bad guard/ref tag (just returns EILSEQ). But it's a good smoke-test of the ublk integrity code and provides coverage of the auto integrity path as well. Signed-off-by: Caleb Sander Mateos Reviewed-by: Ming Lei Link: https://patch.msgid.link/20260421200901.1528842-4-csander@purestorage.com Signed-off-by: Jens Axboe

selftests: ublk: enable test_integrity_02.sh on fio 3.42

2026-04-23T10:52:43+00:00

fio 3.42 was released with the needed fix for test_integrity_02.sh. Allow 3.42 and newer in the fio version check. Signed-off-by: Caleb Sander Mateos Reviewed-by: Ming Lei Link: https://patch.msgid.link/20260421200901.1528842-3-csander@purestorage.com Signed-off-by: Jens Axboe