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2025-09-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h c51613fa276f ("net: add sk->sk_drop_counters") 5d6b58c932ec ("net: lockless sock_i_ino()") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-04thermal: intel: selftests: workload_hint: Mask unsupported typesSrinivas Pandruvada
The workload hint may contain some other hints which are not defined. So mask out unsupported types. Currently only lower 4 bits of workload type hints are defined. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://patch.msgid.link/20250828201541.931425-1-srinivas.pandruvada@linux.intel.com [ rjw: Subject cleanup ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-09-04Merge tag 'net-6.17-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from netfilter, wireless and Bluetooth. We're reverting the removal of a Sundance driver, a user has appeared. This makes the PR rather large in terms of LoC. There's a conspicuous absence of real, user-reported 6.17 issues. Slightly worried that the summer distracted people from testing. Previous releases - regressions: - ax25: properly unshare skbs in ax25_kiss_rcv() Previous releases - always broken: - phylink: disable autoneg for interfaces that have no inband, fix regression on pcs-lynx (NXP LS1088) - vxlan: fix null-deref when using nexthop objects - batman-adv: fix OOB read/write in network-coding decode - icmp: icmp_ndo_send: fix reversing address translation for replies - tcp: fix socket ref leak in TCP-AO failure handling for IPv6 - mctp: - mctp_fraq_queue should take ownership of passed skb - usb: initialise mac header in RX path, avoid WARN - wifi: mac80211: do not permit 40 MHz EHT operation on 5/6 GHz, respect device limitations - wifi: wilc1000: avoid buffer overflow in WID string configuration - wifi: mt76: - fix regressions from mt7996 MLO support rework - fix offchannel handling issues on mt7996 - fix multiple wcid linked list corruption issues - mt7921: don't disconnect when AP requests switch to a channel which requires radar detection - mt7925u: use connac3 tx aggr check in tx complete - wifi: intel: - improve validation of ACPI DSM data - cfg: restore some 1000 series configs - wifi: ath: - ath11k: a fix for GTK rekeying - ath12k: a missed WiFi7 capability (multi-link EMLSR) - eth: intel: - ice: fix races in "low latency" firmware interface for Tx timestamps - idpf: set mac type when adding and removing MAC filters - i40e: remove racy read access to some debugfs files Misc: - Revert "eth: remove the DLink/Sundance (ST201) driver" - netfilter: conntrack: helper: Replace -EEXIST by -EBUSY, avoid confusing modprobe" * tag 'net-6.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (99 commits) phy: mscc: Stop taking ts_lock for tx_queue and use its own lock selftest: net: Fix weird setsockopt() in bind_bhash.c. MAINTAINERS: add Sabrina to TLS maintainers gve: update MAINTAINERS ppp: fix memory leak in pad_compress_skb net: xilinx: axienet: Add error handling for RX metadata pointer retrieval net: atm: fix memory leak in atm_register_sysfs when device_register fail netfilter: nf_tables: Introduce NFTA_DEVICE_PREFIX selftests: netfilter: fix udpclash tool hang ax25: properly unshare skbs in ax25_kiss_rcv() mctp: return -ENOPROTOOPT for unknown getsockopt options net/smc: Remove validation of reserved bits in CLC Decline message ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init() net: thunder_bgx: decrement cleanup index before use net: thunder_bgx: add a missing of_node_put net: phylink: move PHY interrupt request to non-fail path net: lockless sock_i_ino() tools: ynl-gen: fix nested array counting wifi: wilc1000: avoid buffer overflow in WID string configuration wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() ...
2025-09-04selftests/bpf: Add case to test bpf_in_interrupt()Leon Hwang
Add a timer test case to test 'bpf_in_interrupt()'. cd tools/testing/selftests/bpf ./test_progs -t timer_interrupt 462 timer_interrupt:OK Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Leon Hwang <leon.hwang@linux.dev> Link: https://lore.kernel.org/r/20250903140438.59517-3-leon.hwang@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftests/bpf: Introduce experimental bpf_in_interrupt()Leon Hwang
Filtering pid_tgid is meanlingless when the current task is preempted by an interrupt. To address this, introduce 'bpf_in_interrupt()' helper function, which allows BPF programs to determine whether they are executing in interrupt context. 'get_preempt_count()': * On x86, '*(int *) bpf_this_cpu_ptr(&__preempt_count)'. * On arm64, 'bpf_get_current_task_btf()->thread_info.preempt.count'. Then 'bpf_in_interrupt()' will be: * If !PREEMPT_RT, 'get_preempt_count() & (NMI_MASK | HARDIRQ_MASK | SOFTIRQ_MASK)'. * If PREEMPT_RT, '(get_preempt_count() & (NMI_MASK | HARDIRQ_MASK)) | (bpf_get_current_task_btf()->softirq_disable_cnt & SOFTIRQ_MASK)'. As for other archs, it can be added support by updating 'get_preempt_count()'. Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Signed-off-by: Leon Hwang <leon.hwang@linux.dev> Link: https://lore.kernel.org/r/20250903140438.59517-2-leon.hwang@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftests/bpf: Test kfunc bpf_strcasecmpRong Tao
Add testsuites for kfunc bpf_strcasecmp. Signed-off-by: Rong Tao <rongtao@cestc.cn> Link: https://lore.kernel.org/r/tencent_81A1A0ACC04B68158C57C4D151C46A832B07@qq.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftests/bpf: add benchmark testing for kprobe-multi-allMenglong Dong
For now, the benchmark for kprobe-multi is single, which means there is only 1 function is hooked during testing. Add the testing "kprobe-multi-all", which will hook all the kernel functions during the benchmark. And the "kretprobe-multi-all" is added too. Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Link: https://lore.kernel.org/r/20250904021011.14069-4-dongml2@chinatelecom.cn Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftests/bpf: skip recursive functions for kprobe_multiMenglong Dong
Some functions is recursive for the kprobe_multi and impact the benchmark results. So just skip them. Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Link: https://lore.kernel.org/r/20250904021011.14069-3-dongml2@chinatelecom.cn Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftests/bpf: move get_ksyms and get_addrs to trace_helpers.cMenglong Dong
We need to get all the kernel function that can be traced sometimes, so we move the get_syms() and get_addrs() in kprobe_multi_test.c to trace_helpers.c and rename it to bpf_get_ksyms() and bpf_get_addrs(). Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Link: https://lore.kernel.org/r/20250904021011.14069-2-dongml2@chinatelecom.cn Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-04selftest: net: Fix weird setsockopt() in bind_bhash.c.Kuniyuki Iwashima
bind_bhash.c passes (SO_REUSEADDR | SO_REUSEPORT) to setsockopt(). In the asm-generic definition, the value happens to match with the bare SO_REUSEPORT, (2 | 15) == 15, but not on some arch. arch/alpha/include/uapi/asm/socket.h:18:#define SO_REUSEADDR 0x0004 arch/alpha/include/uapi/asm/socket.h:24:#define SO_REUSEPORT 0x0200 arch/mips/include/uapi/asm/socket.h:24:#define SO_REUSEADDR 0x0004 /* Allow reuse of local addresses. */ arch/mips/include/uapi/asm/socket.h:33:#define SO_REUSEPORT 0x0200 /* Allow local address and port reuse. */ arch/parisc/include/uapi/asm/socket.h:12:#define SO_REUSEADDR 0x0004 arch/parisc/include/uapi/asm/socket.h:18:#define SO_REUSEPORT 0x0200 arch/sparc/include/uapi/asm/socket.h:13:#define SO_REUSEADDR 0x0004 arch/sparc/include/uapi/asm/socket.h:20:#define SO_REUSEPORT 0x0200 include/uapi/asm-generic/socket.h:12:#define SO_REUSEADDR 2 include/uapi/asm-generic/socket.h:27:#define SO_REUSEPORT 15 Let's pass SO_REUSEPORT only. Fixes: c35ecb95c448 ("selftests/net: Add test for timing a bind request to a port with a populated bhash entry") Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250903222938.2601522-1-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-04vdso: Drop Kconfig GENERIC_VDSO_TIME_NSThomas Weißschuh
All architectures implementing time-related functionality in the vDSO are using the generic vDSO library which handles time namespaces properly. Remove the now unnecessary Kconfig symbol. Enables the use of time namespaces on architectures, which use the generic vDSO but did not enable GENERIC_VDSO_TIME_NS, namely MIPS and arm. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/all/20250826-vdso-cleanups-v1-10-d9b65750e49f@linutronix.de
2025-09-04selftests: netfilter: fix udpclash tool hangFlorian Westphal
Yi Chen reports that 'udpclash' loops forever depending on compiler (and optimization level used); while (x == 1) gets optimized into for (;;). Add volatile qualifier to avoid that. While at it, also run it under timeout(1) and fix the resize script to not ignore the timeout passed as second parameter to insert_flood. Reported-by: Yi Chen <yiche@redhat.com> Suggested-by: Yi Chen <yiche@redhat.com> Fixes: 78a588363587 ("selftests: netfilter: add conntrack clash resolution test case") Signed-off-by: Florian Westphal <fw@strlen.de>
2025-09-03selftests/bpf: Fix count write in testapp_xdp_metadata_copy()Ricardo B. Marlière
Commit 4b302092553c ("selftests/xsk: Add tail adjustment tests and support check") added a new global to xsk_xdp_progs.c, but left out the access in the testapp_xdp_metadata_copy() function. Since bpf_map_update_elem() will write to the whole bss section, it gets truncated. Fix by writing to skel_rx->bss->count directly. Fixes: 4b302092553c ("selftests/xsk: Add tail adjustment tests and support check") Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250829-selftests-bpf-xsk_regression_fix-v1-1-5f5acdb9fe6b@suse.com
2025-09-03selftests/bpf: Upon failures, exit with code 1 in test_xsk.shRicardo B. Marlière
Currently, even if some subtests fails, the end result will still yield "ok 1 selftests: bpf: test_xsk.sh". Fix it by exiting with 1 if there are any failures. Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20250828-selftests-bpf-test_xsk_ret-v1-1-e6656c01f397@suse.com
2025-09-03selftests: mptcp: add checks for fallback countersGang Yan
Recently, some mib counters about fallback has been added, this patch provides a method to check the expected behavior of these mib counters during the test execution. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/571 Signed-off-by: Gang Yan <yangang@kylinos.cn> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250902-net-next-mptcp-misc-feat-6-18-v2-2-fa02bb3188b1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: net: Add a selftest for VXLAN with FDB nexthop groupsIdo Schimmel
Add test cases for VXLAN with FDB nexthop groups, testing both IPv4 and IPv6. Test basic Tx functionality as well as some corner cases. Example output: # ./test_vxlan_nh.sh TEST: VXLAN FDB nexthop: IPv4 basic Tx [ OK ] TEST: VXLAN FDB nexthop: IPv6 basic Tx [ OK ] TEST: VXLAN FDB nexthop: learning [ OK ] TEST: VXLAN FDB nexthop: IPv4 proxy [ OK ] TEST: VXLAN FDB nexthop: IPv6 proxy [ OK ] Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20250901065035.159644-4-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: net: avoid memory leakZongmin Zhou
The buffer be used without free,fix it to avoid memory leak. Signed-off-by: Zongmin Zhou <zhouzongmin@kylinos.cn> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250901054557.32811-1-min_halo@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: drv-net: rss_ctx: make the test pass with few queuesJakub Kicinski
rss_ctx.test_rss_key_indir implicitly expects at least 5 queues, as it checks that the traffic on first 2 queues is lower than the remaining queues when we use all queues. Special case fewer queues. Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250901173139.881070-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: drv-net: rss_ctx: use Netlink for timed reconfigJakub Kicinski
The rss_ctx test has gotten pretty flaky after I increased the queue count in NIPA 2->3. Not 100% clear why. We get a lot of failures in the rss_ctx.test_hitless_key_update case. Looking closer it appears that the failures are mostly due to startup costs. I measured the following timing for ethtool -X: - python cmd(shell=True) : 150-250msec - python cmd(shell=False) : 50- 70msec - timed in bash : 45- 55msec - YNL Netlink call : 2- 4msec - .set_rxfh callback : 1- 2msec The target in the test was set to 200msec. We were mostly measuring ethtool startup cost it seems. Switch to YNL since it's 100x faster. Lower the pass criteria to 150msec, no real science behind this number but we removed some overhead, drivers which previously passed 200msec should easily pass 150msec now. Separately we should probably follow up on defaulting to shell=False, when script doesn't explicitly ask for True, because the overhead is rather significant. Switch from _rss_key_rand() to random.randbytes(), YNL takes a binary array rather than array of ints. Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250901173139.881070-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: net: py: don't default to shell=TrueJakub Kicinski
Overhead of using shell=True is quite significant. Micro-benchmark of running ethtool --help shows that non-shell run is 2x faster. Runtime of the XDP tests also shows improvement: this patch: 2m34s 2m21s 2m18s 2m18s before: 2m54s 2m36s 2m34s Reviewed-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20250830184317.696121-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02selftests: drv-net: adjust tests before defaulting to shell=FalseJakub Kicinski
Clean up tests which expect shell=True without explicitly passing that param to cmd(). There seems to be only one such case, and in fact it's better converted to a direct write. Reviewed-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20250830184317.696121-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02net: selftests: clean up tools/testing/selftests/net/lib/py/utils.pyBreno Leitao
This patch improves the utils.py module by removing unused imports (errno, random), simplifying the fd_read_timeout() function by eliminating unnecessary else clause, and cleaning up code style in the defer class constructor. Additionally, it renames the parameter in rand_port() from 'type' to 'stype' to avoid shadowing the built-in Python name 'type', improving code clarity and preventing potential issues. These changes enhance code readability and maintainability without affecting functionality. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250901-fix-v1-1-df0abb67481e@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-02Merge tag 'mm-hotfixes-stable-2025-09-01-17-20' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "17 hotfixes. 13 are cc:stable and the remainder address post-6.16 issues or aren't considered necessary for -stable kernels. 11 of these fixes are for MM. This includes a three-patch series from Harry Yoo which fixes an intermittent boot failure which can occur on x86 systems. And a two-patch series from Alexander Gordeev which fixes a KASAN crash on S390 systems" * tag 'mm-hotfixes-stable-2025-09-01-17-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm: fix possible deadlock in kmemleak x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() mm: introduce and use {pgd,p4d}_populate_kernel() mm: move page table sync declarations to linux/pgtable.h proc: fix missing pde_set_flags() for net proc files mm: fix accounting of memmap pages mm/damon/core: prevent unnecessary overflow in damos_set_effective_quota() kexec: add KEXEC_FILE_NO_CMA as a legal flag kasan: fix GCC mem-intrinsic prefix with sw tags mm/kasan: avoid lazy MMU mode hazards mm/kasan: fix vmalloc shadow memory (de-)population races kunit: kasan_test: disable fortify string checker on kasan_strings() test selftests/mm: fix FORCE_READ to read input value correctly mm/userfaultfd: fix kmap_local LIFO ordering for CONFIG_HIGHPTE ocfs2: prevent release journal inode after journal shutdown rust: mm: mark VmaNew as transparent of_numa: fix uninitialized memory nodes causing kernel panic
2025-09-02selftests/proc: add tests for new pidns APIsAleksa Sarai
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Link: https://lore.kernel.org/20250805-procfs-pidns-api-v4-4-705f984940e7@cyphar.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-09-02selftests/fs/mount-notify: Fix compilation failure.Xing Guo
Commit c6d9775c2066 ("selftests/fs/mount-notify: build with tools include dir") introduces the struct __kernel_fsid_t to decouple dependency with headers_install. The commit forgets to define a macro for __kernel_fsid_t and it will cause type re-definition issue. Signed-off-by: Xing Guo <higuoxing@gmail.com> Link: https://lore.kernel.org/20250813031647.96411-1-higuoxing@gmail.com Acked-by: Amir Goldstein <amir73il@gmail.com> Closes: https://lore.kernel.org/oe-lkp/202508110628.65069d92-lkp@intel.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-09-01selftests: net: fix spelling and grammar mistakesPraveen Balakrishnan
Fix several spelling and grammatical mistakes in output messages from the net selftests to improve readability. Only the message strings for the test output have been modified. No changes to the functional logic of the tests have been made. Signed-off-by: Praveen Balakrishnan <praveen.balakrishnan@magd.ox.ac.uk> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250828211100.51019-1-praveen.balakrishnan@magd.ox.ac.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-01selftests: drv-net: csum: fix interface name for remote hostJakub Kicinski
Use cfg.remote_ifname for arguments of remote command. Without this UDP tests fail in NIPA where local interface is called enp1s0 and remote enp0s4. Fixes: 1d0dc857b5d8 ("selftests: drv-net: add checksum tests") Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20250830183842.688935-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-01selftests/nolibc: remove outdated comment about construct orderBenjamin Berg
The constructor order is not (and should not) be tested. Remove the comment. Fixes: a782d45c867c ("selftests/nolibc: stop testing constructor order") Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://lore.kernel.org/r/20250731201225.323254-3-benjamin@sipsolutions.net Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-09-01selftests/nolibc: fix EXPECT_NZ macroBenjamin Berg
The expect non-zero macro was incorrect and never used. Fix its definition. Fixes: 362aecb2d8cfa ("selftests/nolibc: add basic infrastructure to ease creation of nolibc tests") Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://lore.kernel.org/r/20250731201225.323254-2-benjamin@sipsolutions.net Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-09-01kselftest/arm64: tpidr2: Switch to waitpid() over wait4()Thomas Weißschuh
wait4() is deprecated, non-standard and about to be removed from nolibc. Switch to the equivalent waitpid() call. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Mark Brown <broonie@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20250821-nolibc-enosys-v1-6-4b63f2caaa89@weissschuh.net
2025-09-01selftests/futex: Fix futex_wait() for 32bit ARMDan Carpenter
On 32bit ARM systems gcc-12 will use 32bit timestamps while gcc-13 and later will use 64bit timestamps. The problem is that SYS_futex will continue pointing at the 32bit system call. This makes the futex_wait test fail like this: waiter failed errno 110 not ok 1 futex_wake private returned: 0 Success waiter failed errno 110 not ok 2 futex_wake shared (page anon) returned: 0 Success waiter failed errno 110 not ok 3 futex_wake shared (file backed) returned: 0 Success Instead of compiling differently depending on the gcc version, use the -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 options to ensure that 64bit timestamps are used. Then use ifdefs to make SYS_futex point to the 64bit system call. Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: André Almeida <andrealmeid@igalia.com> Tested-by: Anders Roxell <anders.roxell@linaro.org> Link: https://lore.kernel.org/20250827130011.677600-6-bigeasy@linutronix.de
2025-09-01selftests/futex: Fix typos and grammar in futex_priv_hashGopi Krishna Menon
Fix multiple typos and small grammar issues in help text, comments and test messages in the futex_priv_hash test. Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: André Almeida <andrealmeid@igalia.com> Link: https://lore.kernel.org/20250827130011.677600-5-bigeasy@linutronix.de
2025-09-01selftests/futex: Fix format-security warnings in futex_priv_hashNai-Chen Cheng
Fix format-security warnings by using proper format strings when passing message variables to ksft_exit_fail_msg(), ksft_test_result_pass(), and ksft_test_result_skip() function. Thus prevent potential security issues and eliminate compiler warnings when building with -Wformat-security. Signed-off-by: Nai-Chen Cheng <bleach1827@gmail.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250827130011.677600-4-bigeasy@linutronix.de
2025-09-01selftests/futex: Fix some futex_numa_mpol subtestsWaiman Long
The "Memory out of range" subtest of futex_numa_mpol assumes that memory access outside of the mmap'ed area is invalid. That may not be the case depending on the actual memory layout of the test application. When that subtest was run on an x86-64 system with latest upstream kernel, the test passed as an error was returned from futex_wake(). On another PowerPC system, the same subtest failed because futex_wake() returned 0. Bail out! futex2_wake(64, 0x86) should fail, but didn't Looking further into the passed subtest on x86-64, it was found that an -EINVAL was returned instead of -EFAULT. The -EINVAL error was returned because the node value test with FLAGS_NUMA set failed with a node value of 0x7f7f. IOW, the futex memory was accessible and futex_wake() failed because the supposed node number wasn't valid. If that memory location happens to have a very small value (e.g. 0), the test will pass and no error will be returned. Since this subtest is non-deterministic, drop it unless a guard page beyond the mmap region is explicitly set. The other problematic test is the "Memory too small" test. The futex_wake() function returns the -EINVAL error code because the given futex address isn't 8-byte aligned, not because only 4 of the 8 bytes are valid and the other 4 bytes are not. So change the name of this subtest to "Mis-aligned futex" to reflect the reality. [ bp: Massage commit message. ] Fixes: 3163369407ba ("selftests/futex: Add futex_numa_mpol") Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/20250827130011.677600-3-bigeasy@linutronix.de
2025-09-01powerpc: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headersThomas Huth
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembler code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This is bad since macros starting with two underscores are names that are reserved by the C language. It can also be very confusing for the developers when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. This is almost a completely mechanical patch (done with a simple "sed -i" statement), apart from tweaking two comments manually in arch/powerpc/include/asm/bug.h and arch/powerpc/include/asm/kasan.h (which did not have proper underscores at the end) and fixing a checkpatch error about spaces in arch/powerpc/include/asm/spu_csa.h. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250801082007.32904-3-thuth@redhat.com
2025-08-30Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - CFI failure due to kpti_ng_pgd_alloc() signature mismatch - Underallocation bug in the SVE ptrace kselftest * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: kselftest/arm64: Don't open code SVE_PT_SIZE() in fp-ptrace arm64: mm: Fix CFI failure due to kpti_ng_pgd_alloc function signature
2025-08-30kselftest/arm64: Don't open code SVE_PT_SIZE() in fp-ptraceMark Brown
In fp-trace when allocating a buffer to write SVE register data we open code the addition of the header size to the VL depeendent register data size, which lead to an underallocation bug when we cut'n'pasted the code for FPSIMD format writes. Use the SVE_PT_SIZE() macro that the kernel UAPI provides for this. Fixes: b84d2b27954f ("kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace") Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20250812-arm64-fp-trace-macro-v1-1-317cfff986a5@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-08-30Merge branch 'for-linus' into for-nextTakashi Iwai
Pull 6.17 devel branch for further auto-cleanup updates. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-08-29vsock/test: Remove redundant semicolonsLiao Yuanhong
Remove unnecessary semicolons. Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://patch.msgid.link/20250828083938.400872-1-liaoyuanhong@vivo.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29netfilter: nft_flowtable.sh: re-run with random mtu sizesFlorian Westphal
Jakub says: nft_flowtable.sh is one of the most flake-atious test for netdev CI currently :( The root cause is two-fold: 1. the failing part of the test is supposed to make sure that ip fragments are forwarded for offloaded flows. (flowtable has to pass them to classic forward path). path mtu discovery for these subtests is disabled. 2. nft_flowtable.sh has two passes. One with fixed mtus/file size and one where link mtus and file sizes are random. The CI failures all have same pattern: re-run with random mtus and file size: -o 27663 -l 4117 -r 10089 -s 54384840 [..] PASS: dscp_egress: dscp packet counters match FAIL: file mismatch for ns1 -> ns2 In some cases this error triggers a bit ealier, sometimes in a later subtest: re-run with random mtus and file size: -o 20201 -l 4555 -r 12657 -s 9405856 [..] PASS: dscp_egress: dscp packet counters match PASS: dscp_fwd: dscp packet counters match 2025/08/17 20:37:52 socat[18954] E write(7, 0x560716b96000, 8192): Broken pipe FAIL: file mismatch for ns1 -> ns2 -rw------- 1 root root 9405856 Aug 17 20:36 /tmp/tmp.2n63vlTrQe But all logs I saw show same scenario: 1. Failing tests have pmtu discovery off (i.e., ip fragmentation) 2. The test file is much larger than first-pass default (2M Byte) 3. peers have much larger MTUs compared to the 'network'. These errors are very reproducible when re-running the test with the same commandline arguments. The timeout became much more prominent with 1d2fbaad7cd8 ("tcp: stronger sk_rcvbuf checks"): reassembled packets typically have a skb->truesize more than double the skb length. As that commit is intentional and pmtud-off with large-tcp-packets-as-fragments is not normal adjust the test to use a smaller file for the pmtu-off subtests. While at it, add more information to pass/fail messages and also run the dscp alteration subtest with pmtu discovery enabled. Link: https://netdev.bots.linux.dev/contest.html?test=nft-flowtable-sh Fixes: f84ab634904c ("selftests: netfilter: nft_flowtable.sh: re-run with random mtu sizes") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20250822071330.4168f0db@kernel.org/ Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20250828214918.3385-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Paolo Bonzini: "ARM: - Correctly handle 'invariant' system registers for protected VMs - Improved handling of VNCR data aborts, including external aborts - Fixes for handling of FEAT_RAS for NV guests, providing a sane fault context during SEA injection and preventing the use of RASv1p1 fault injection hardware - Ensure that page table destruction when a VM is destroyed gives an opportunity to reschedule - Large fix to KVM's infrastructure for managing guest context loaded on the CPU, addressing issues where the output of AT emulation doesn't get reflected to the guest - Fix AT S12 emulation to actually perform stage-2 translation when necessary - Avoid attempting vLPI irqbypass when GICv4 has been explicitly disabled for a VM - Minor KVM + selftest fixes RISC-V: - Fix pte settings within kvm_riscv_gstage_ioremap() - Fix comments in kvm_riscv_check_vcpu_requests() - Fix stack overrun when setting vlenb via ONE_REG x86: - Use array_index_nospec() to sanitize the target vCPU ID when handling PV IPIs and yields as the ID is guest-controlled. - Drop a superfluous cpumask_empty() check when reclaiming SEV memory, as the common case, by far, is that at least one CPU will have entered the VM, and wbnoinvd_on_cpus_mask() will naturally handle the rare case where the set of have_run_cpus is empty. Selftests (not KVM): - Rename the is_signed_type() macro in kselftest_harness.h to is_signed_var() to fix a collision with linux/overflow.h. The collision generates compiler warnings due to the two macros having different meaning" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (29 commits) KVM: arm64: nv: Fix ATS12 handling of single-stage translation KVM: arm64: Remove __vcpu_{read,write}_sys_reg_{from,to}_cpu() KVM: arm64: Fix vcpu_{read,write}_sys_reg() accessors KVM: arm64: Simplify sysreg access on exception delivery KVM: arm64: Check for SYSREGS_ON_CPU before accessing the 32bit state RISC-V: KVM: fix stack overrun when loading vlenb RISC-V: KVM: Correct kvm_riscv_check_vcpu_requests() comment RISC-V: KVM: Fix pte settings within kvm_riscv_gstage_ioremap() KVM: arm64: selftests: Sync ID_AA64MMFR3_EL1 in set_id_regs KVM: arm64: Get rid of ARM64_FEATURE_MASK() KVM: arm64: Make ID_AA64PFR1_EL1.RAS_frac writable KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable KVM: arm64: Ignore HCR_EL2.FIEN set by L1 guest's EL2 KVM: arm64: Handle RASv1p1 registers arm64: Add capability denoting FEAT_RASv1p1 KVM: arm64: Reschedule as needed when destroying the stage-2 page-tables KVM: arm64: Split kvm_pgtable_stage2_destroy() selftests: harness: Rename is_signed_type() to avoid collision with overflow.h KVM: SEV: don't check have_run_cpus in sev_writeback_caches() KVM: arm64: Correctly populate FAR_EL2 on nested SEA injection ...
2025-08-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.17-rc4). No conflicts. Adjacent changes: drivers/net/ethernet/intel/idpf/idpf_txrx.c 02614eee26fb ("idpf: do not linearize big TSO packets") 6c4e68480238 ("idpf: remove obsolete stashing code") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29Merge tag 'kvmarm-fixes-6.17-1' of ↵Paolo Bonzini
https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 changes for 6.17, take #2 - Correctly handle 'invariant' system registers for protected VMs - Improved handling of VNCR data aborts, including external aborts - Fixes for handling of FEAT_RAS for NV guests, providing a sane fault context during SEA injection and preventing the use of RASv1p1 fault injection hardware - Ensure that page table destruction when a VM is destroyed gives an opportunity to reschedule - Large fix to KVM's infrastructure for managing guest context loaded on the CPU, addressing issues where the output of AT emulation doesn't get reflected to the guest - Fix AT S12 emulation to actually perform stage-2 translation when necessary - Avoid attempting vLPI irqbypass when GICv4 has been explicitly disabled for a VM - Minor KVM + selftest fixes
2025-08-29selftests/futex: Remove the -g parameter from futex_priv_hashSebastian Andrzej Siewior
The -g parameter was meant to the test the immutable global hash instead of the private hash which has been made immutable. The global hash is tested as part at the end of the regular test. The immutable private hash been removed. Remove last traces of the immutable private hash. Fixes: 16adc7f136dc1 ("selftests/futex: Remove support for IMMUTABLE") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: André Almeida <andrealmeid@igalia.com> Link: https://lore.kernel.org/20250827130011.677600-2-bigeasy@linutronix.de
2025-08-28Merge tag 'block-6.17-20250828' of git://git.kernel.dk/linuxLinus Torvalds
Pull block fixes from Jens Axboe: - Fix a lockdep spotted issue on recursive locking for zoned writes, in case of errors - Update bcache MAINTAINERS entry address for Coly - Fix for a ublk release issue, with selftests - Fix for a regression introduced in this cycle, where it assumed q->rq_qos was always set if the bio flag indicated that - Fix for a regression introduced in this cycle, where loop retrieving block device sizes got broken * tag 'block-6.17-20250828' of git://git.kernel.dk/linux: bcache: change maintainer's email address ublk selftests: add --no_ublk_fixed_fd for not using registered ublk char device ublk: avoid ublk_io_release() called after ublk char dev is closed block: validate QoS before calling __rq_qos_done_bio() blk-zoned: Fix a lockdep complaint about recursive locking loop: fix zero sized loop for block special file
2025-08-28selftests: drv-net: rss_ctx: fix the queue count checkJakub Kicinski
Commit 0d6ccfe6b319 ("selftests: drv-net: rss_ctx: check for all-zero keys") added a skip exception if NIC has fewer than 3 queues enabled, but it's just constructing the object, it's not actually rising this exception. Before: # Exception| net.lib.py.utils.CmdExitFailure: Command failed: ethtool -X enp1s0 equal 3 hkey d1:cc:77:47:9d:ea:15:f2:b9:6c:ef:68:62:c0:45:d5:b0:99:7d:cf:29:53:40:06:3d:8e:b9:bc:d4:70:89:b8:8d:59:04:ea:a9:c2:21:b3:55:b8:ab:6b:d9:48:b4:bd:4c:ff:a5:f0:a8:c2 not ok 1 rss_ctx.test_rss_key_indir After: ok 1 rss_ctx.test_rss_key_indir # SKIP Device has fewer than 3 queues (or doesn't support queue stats) Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250827173558.3259072-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-28vfio: selftests: Fix .gitignore for already tracked filesDavid Matlack
Fix the rules in tools/testing/selftests/vfio/.gitignore to not ignore some already tracked files (.gitignore, Makefile, lib/libvfio.mk). This change should be a no-op, since these files are already tracked by git and thus git will not ignore updates to them even though they match the ignore rules in the VFIO selftests .gitignore file. However, they do generate warnings with W=1, as reported by the kernel test robot. $ KBUILD_EXTRA_WARN=1 scripts/misc-check tools/testing/selftests/vfio/.gitignore: warning: ignored by one of the .gitignore files tools/testing/selftests/vfio/Makefile: warning: ignored by one of the .gitignore files tools/testing/selftests/vfio/lib/libvfio.mk: warning: ignored by one of the .gitignore files Fix this by explicitly un-ignoring the tracked files. Fixes: 292e9ee22b0a ("selftests: Create tools/testing/selftests/vfio") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202508280918.rFRyiLEU-lkp@intel.com/ Signed-off-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20250828185815.382215-1-dmatlack@google.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2025-08-28selftests/bpf: Fix bpf_prog_detach2 usage in test_lirc_mode2Ricardo B. Marlière
Commit e9fc3ce99b34 ("libbpf: Streamline error reporting for high-level APIs") redefined the way that bpf_prog_detach2() returns. Therefore, adapt the usage in test_lirc_mode2_user.c. Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250828-selftests-bpf-v1-1-c7811cd8b98c@suse.com
2025-08-28ublk selftests: add --no_ublk_fixed_fd for not using registered ublk char deviceMing Lei
Add a new command line option --no_ublk_fixed_fd that excludes the ublk control device (/dev/ublkcN) from io_uring's registered files array. When this option is used, only backing files are registered starting from index 1, while the ublk control device is accessed using its raw file descriptor. Add ublk_get_registered_fd() helper function that returns the appropriate file descriptor for use with io_uring operations. Key optimizations implemented: - Cache UBLKS_Q_NO_UBLK_FIXED_FD flag in ublk_queue.flags to avoid reading dev->no_ublk_fixed_fd in fast path - Cache ublk char device fd in ublk_queue.ublk_fd for fast access - Update ublk_get_registered_fd() to use ublk_queue * parameter - Update io_uring_prep_buf_register/unregister() to use ublk_queue * - Replace ublk_device * access with ublk_queue * access in fast paths Also pass --no_ublk_fixed_fd to test_stress_04.sh for covering plain ublk char device mode. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250827121602.2619736-3-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-08-28udp: add drop_counters to udp socketEric Dumazet
When a packet flood hits one or more UDP sockets, many cpus have to update sk->sk_drops. This slows down other cpus, because currently sk_drops is in sock_write_rx group. Add a socket_drop_counters structure to udp sockets. Using dedicated cache lines to hold drop counters makes sure that consumers no longer suffer from false sharing if/when producers only change sk->sk_drops. This adds 128 bytes per UDP socket. Tested with the following stress test, sending about 11 Mpps to a dual socket AMD EPYC 7B13 64-Core. super_netperf 20 -t UDP_STREAM -H DUT -l10 -- -n -P,1000 -m 120 Note: due to socket lookup, only one UDP socket is receiving packets on DUT. Then measure receiver (DUT) behavior. We can see both consumer and BH handlers can process more packets per second. Before: nstat -n ; sleep 1 ; nstat | grep Udp Udp6InDatagrams 615091 0.0 Udp6InErrors 3904277 0.0 Udp6RcvbufErrors 3904277 0.0 After: nstat -n ; sleep 1 ; nstat | grep Udp Udp6InDatagrams 816281 0.0 Udp6InErrors 7497093 0.0 Udp6RcvbufErrors 7497093 0.0 Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250826125031.1578842-5-edumazet@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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