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2026-01-20docs: kdoc: fix logic to handle unissued warningsMauro Carvalho Chehab
Changeset 469c1c9eb6c9 ("kernel-doc: Issue warnings that were silently discarded") didn't properly addressed the missing messages behavior, as it was calling directly python logger low-level function, instead of using the expected method to emit warnings. Basically, there are two methods to log messages: - self.config.log.warning() - This is the raw level to emit a warning. It just writes the a message at stderr, via python logging, as it is initialized as: self.config.log = logging.getLogger("kernel-doc") - self.config.warning() - This is where we actually consider a message as a warning, properly incrementing error count. Due to that, several parsing error messages are internally considered as success, causing -Werror to not work on such messages. While here, ensure that the last ignored entry will also be handled by adding an extra check at the end of the parse handler. Fixes: 469c1c9eb6c9 ("kernel-doc: Issue warnings that were silently discarded") Closes: https://lore.kernel.org/linux-doc/20260112091053.00cee29a@foz.lan/ Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <95109a6585171da4d6900049deaa2634b41ee743.1768823489.git.mchehab+huawei@kernel.org>
2026-01-20tools: lib: thermal: Correct CFLAGS and LDFLAGS in pkg-config templateRomain Gantois
There are two issues with the current pkg-config template. Firstly, the -lthermal linker flag is missing. Secondly, the libnl3 include directory compiler flag references "include" instead of "includedir", which leads to an unexpanded variable when pkg-config is called. Add the missing -lthermal flag and correct the libnl3 include directory. Signed-off-by: Romain Gantois <romain.gantois@bootlin.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://patch.msgid.link/20251226-libthermal-pkgconfig-v1-1-3406de5ca8ea@bootlin.com
2026-01-20selftests/bpf: Add perfbuf multi-producer benchmarkGyutae Bae
Add a multi-producer benchmark for perfbuf to complement the existing ringbuf multi-producer test. Unlike ringbuf which uses a shared buffer and experiences contention, perfbuf uses per-CPU buffers so the test measures scaling behavior rather than contention. This allows developers to compare perfbuf vs ringbuf performance under multi-producer workloads when choosing between the two for their systems. Signed-off-by: Gyutae Bae <gyutae.bae@navercorp.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20260120090716.82927-1-gyutae.opensource@navercorp.com
2026-01-20kunit: add bash completionRyota Sakamoto
Currently, kunit.py has many subcommands and options, making it difficult to remember them without checking the help message. Add --list-cmds and --list-opts to kunit.py to get available commands and options, use those outputs in kunit-completion.sh to show completion. This implementation is similar to perf and tools/perf/perf-completion.sh. Example output: $ source tools/testing/kunit/kunit-completion.sh $ ./tools/testing/kunit/kunit.py [TAB][TAB] build config exec parse run $ ./tools/testing/kunit/kunit.py run --k[TAB][TAB] --kconfig_add --kernel_args --kunitconfig Link: https://lore.kernel.org/r/20260117-kunit-completion-v2-1-cabd127d0801@gmail.com Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Ryota Sakamoto <sakamo.ryota@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-01-20vsock/test: Do not filter kallsyms by symbol typeMichal Luczaj
Blamed commit implemented logic to discover available vsock transports by grepping /proc/kallsyms for known symbols. It incorrectly filtered entries by type 'd'. For some kernel configs having CONFIG_VIRTIO_VSOCKETS=m CONFIG_VSOCKETS_LOOPBACK=y kallsyms reports 0000000000000000 d virtio_transport [vmw_vsock_virtio_transport] 0000000000000000 t loopback_transport Overzealous filtering might have affected vsock test suit, resulting in insufficient/misleading testing. Do not filter symbols by type. It never helped much. Fixes: 3070c05b7afd ("vsock/test: Introduce get_transports()") Signed-off-by: Michal Luczaj <mhal@rbox.co> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://patch.msgid.link/20260116-vsock_test-kallsyms-grep-v1-1-3320bc3346f2@rbox.co Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-20selftests/net: Add netkit container testsDavid Wei
Add two tests using NetDrvContEnv. One basic test that sets up a netkit pair, with one end in a netns. Use LOCAL_PREFIX_V6 and nk_forward BPF program to ping from a remote host to the netkit in netns. Second is a selftest for netkit queue leasing, using io_uring zero copy test binary inside of a netns with netkit. This checks that memory providers can be bound against virtual queues in a netkit within a netns that are leasing from a physical netdev in the default netns. Signed-off-by: David Wei <dw@davidwei.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-17-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-20selftests/net: Make NetDrvContEnv support queue leasingDavid Wei
Add a new parameter `lease` to NetDrvContEnv that sets up queue leasing in the env. The NETIF also has some ethtool parameters changed to support memory provider tests. This is needed in NetDrvContEnv rather than individual test cases since the cleanup to restore NETIF can't be done, until the netns in the env is gone. Signed-off-by: David Wei <dw@davidwei.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-16-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-20selftests/net: Add env for container based testsDavid Wei
Add an env NetDrvContEnv for container based selftests. This automates the setup of a netns, netkit pair with one inside the netns, and a BPF program that forwards skbs from the NETIF host inside the container. Currently only netkit is used, but other virtual netdevs e.g. veth can be used too. Expect netkit container datapath selftests to have a publicly routable IP prefix to assign to netkit in a container, such that packets will land on eth0. The BPF skb forward program will then forward such packets from the host netns to the container netns. Signed-off-by: David Wei <dw@davidwei.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-15-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-20selftests/net: Add bpf skb forwarding programDavid Wei
Add nk_forward.bpf.c, a BPF program that forwards skbs matching some IPv6 prefix received on eth0 ifindex to a specified netkit ifindex. This will be needed by netkit container tests. Signed-off-by: David Wei <dw@davidwei.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-14-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-20net: Add queue-create operationDaniel Borkmann
Add a ynl netdev family operation called queue-create that creates a new queue on a netdevice: name: queue-create attribute-set: queue flags: [admin-perm] do: request: attributes: - ifindex - type - lease reply: &queue-create-op attributes: - id This is a generic operation such that it can be extended for various use cases in future. Right now it is mandatory to specify ifindex, the queue type which is enforced to rx and a lease. The newly created queue id is returned to the caller. A queue from a virtual device can have a lease which refers to another queue from a physical device. This is useful for memory providers and AF_XDP operations which take an ifindex and queue id to allow applications to bind against virtual devices in containers. The lease couples both queues together and allows to proxy the operations from a virtual device in a container to the physical device. In future, the nested lease attribute can be lifted and made optional for other use-cases such as dynamic queue creation for physical netdevs. The lack of lease and the specification of the physical device as an ifindex will imply that we need a real queue to be allocated. Similarly, the queue type enforcement to rx can then be lifted as well to support tx. An early implementation had only driver-specific integration [0], but in order for other virtual devices to reuse, it makes sense to have this as a generic API in core net. For leasing queues, the virtual netdev must have real_num_rx_queue less than num_rx_queues at the time of calling queue-create. The queue-type must be rx as only rx queues are supported for leasing for now. We also enforce that the queue-create ifindex must point to a virtual device, and that the nested lease attribute's ifindex must point to a physical device. The nested lease attribute set contains a netns-id attribute which is currently only intended for dumping as part of the queue-get operation. Also, it is modeled as an s32 type similarly as done elsewhere in the stack. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Co-developed-by: David Wei <dw@davidwei.uk> Signed-off-by: David Wei <dw@davidwei.uk> Link: https://bpfconf.ebpf.io/bpfconf2025/bpfconf2025_material/lsfmmbpf_2025_netkit_borkmann.pdf [0] Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260115082603.219152-2-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-01-19selftests/tc-testing: Try to add teql as a child qdiscVictor Nogueira
Add a selftest that attempts to add a teql qdisc as a qfq child. Since teql _must_ be added as a root qdisc, the kernel should reject this. Signed-off-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20260114160243.913069-4-jhs@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19selftests: net: csum: Fix printk format in recv_get_packet_csum_status()Christophe Leroy (CS GROUP)
Following warning is encountered when building selftests on powerpc/32. CC csum csum.c: In function 'recv_get_packet_csum_status': csum.c:710:50: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 710 | error(1, 0, "cmsg: len=%lu expected=%lu", | ~~^ | | | long unsigned int | %u 711 | cm->cmsg_len, CMSG_LEN(sizeof(struct tpacket_auxdata))); | ~~~~~~~~~~~~ | | | size_t {aka unsigned int} csum.c:710:63: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Wformat=] 710 | error(1, 0, "cmsg: len=%lu expected=%lu", | ~~^ | | | long unsigned int | %u cm->cmsg_len has type __kernel_size_t and CMSG() macro has the type returned by sizeof() which is size_t. size_t is 'unsigned int' on some platforms and 'unsigned long' on other ones so use %zu instead of %lu. The code in question was introduced by commit 91a7de85600d ("selftests/net: add csum offload test"). Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Link: https://patch.msgid.link/8b69b40826553c1dd500d9d25e45883744f3f348.1768556791.git.chleroy@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19selftests: net: simple selftest for ipvtapDmitry Skorodumov
This is a simple ipvtap test to test handling IP-address add/remove on ipvlan interface. It creates a veth-interface and then creates several network-namespace with ipvlan0 interface in it linked to veth. Then it starts to add/remove addresses on ipvlan0 interfaces in several threads. At finish, it checks that there is no duplicated addresses. Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry@huawei.com> Link: https://patch.msgid.link/20260112142417.4039566-3-skorodumov.dmitry@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMUDavid Matlack
Drop the assertions about IOMMU mappings sizes for VFIO_TYPE1_IOMMU modes (both the VFIO mode and the iommufd compatibility mode). These assertions fail when CONFIG_IOMMUFD_VFIO_CONTAINER is enabled, since iommufd compatibility mode provides different huge page behavior than VFIO for VFIO_TYPE1_IOMMU. VFIO_TYPE1_IOMMU is an old enough interface that it's not worth changing the behavior of VFIO and iommufd to match nor care about the IOMMU mapping sizes. Cc: Jason Gunthorpe <jgg@ziepe.ca> Link: https://lore.kernel.org/kvm/20260109143830.176dc279@shazbot.org/ Signed-off-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20260114211252.2581145-1-dmatlack@google.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2026-01-19vfio: selftests: Add vfio_dma_mapping_mmio_testAlex Mastro
Test IOMMU mapping the BAR mmaps created during vfio_pci_device_setup(). All IOMMU modes are tested: vfio_type1 variants are expected to succeed, while non-type1 modes are expected to fail. iommufd compat mode can be updated to expect success once kernel support lands. Native iommufd will not support mapping vaddrs backed by MMIO (it will support dma-buf based MMIO mapping instead). Signed-off-by: Alex Mastro <amastro@fb.com> Reviewed-by: David Matlack <dmatlack@google.com> Tested-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20260114-map-mmio-test-v3-3-44e036d95e64@fb.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2026-01-19vfio: selftests: Align BAR mmaps for efficient IOMMU mappingAlex Mastro
Update vfio_pci_bar_map() to align BAR mmaps for efficient huge page mappings. The manual mmap alignment can be removed once mmap(!MAP_FIXED) on vfio device fds improves to automatically return well-aligned addresses. Also add MADV_HUGEPAGE, which encourages the kernel to use huge pages (e.g. when /sys/kernel/mm/transparent_hugepage/enabled is set to "madvise"). Drop MAP_FILE from mmap(). It is an ignored compatibility flag. Signed-off-by: Alex Mastro <amastro@fb.com> Reviewed-by: David Matlack <dmatlack@google.com> Tested-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20260114-map-mmio-test-v3-2-44e036d95e64@fb.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2026-01-19vfio: selftests: Centralize IOMMU mode name definitionsAlex Mastro
Replace scattered string literals with MODE_* macros in iommu.h. This provides a single source of truth for IOMMU mode name strings. Signed-off-by: Alex Mastro <amastro@fb.com> Reviewed-by: David Matlack <dmatlack@google.com> Tested-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20260114-map-mmio-test-v3-1-44e036d95e64@fb.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2026-01-19selftests: add dm-verity keyring selftestsChristian Brauner
Add selftests that verify the keyring behaves correctly. For simplicity this works with dm-verity as a module. Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2026-01-19selftests/x86: Clean up sysret_rip coding styleUYeol Jo
Tidy up sysret_rip style (cast spacing, main(void), const placement). No functional change intended. Signed-off-by: UYeol Jo <jouyeol8739@gmail.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://patch.msgid.link/20260111210126.74752-1-jouyeol8739@gmail.com
2026-01-19Merge tag 'v6.19-rc6' into tip-x86-cleanupsBorislav Petkov (AMD)
Pick up upstream work and d9b40d7262a2 ("selftests/x86: Add selftests include path for kselftest.h after centralization") especially which is a build fix needed for a selftests cleanup coming ontop of this. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
2026-01-19selftests: ALSA: Remove unused variable in utimer-testLeeYongjun
The variable 'i' in wrong_timers_test() is declared but never used. This was detected by Cppcheck static analysis. tools/testing/selftests/alsa/utimer-test.c:144:9: style: Unused variable: i [unusedVariable] Remove it to clean up the code and silence the warning. Signed-off-by: LeeYongjun <jun85566@gmail.com> Link: https://patch.msgid.link/20260118065510.29644-1-jun85566@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2026-01-18Merge tag 'landlock-6.19-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux Pull landlock fixes from Mickaël Salaün: "This fixes TCP handling, tests, documentation, non-audit elided code, and minor cosmetic changes" * tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: landlock: Clarify documentation for the IOCTL access right selftests/landlock: Properly close a file descriptor landlock: Improve the comment for domain_is_scoped selftests/landlock: Use scoped_base_variants.h for ptrace_test selftests/landlock: Fix missing semicolon selftests/landlock: Fix typo in fs_test landlock: Optimize stack usage when !CONFIG_AUDIT landlock: Fix spelling landlock: Clean up hook_ptrace_access_check() landlock: Improve erratum documentation landlock: Remove useless include landlock: Fix wrong type usage selftests/landlock: NULL-terminate unix pathname addresses selftests/landlock: Remove invalid unix socket bind() selftests/landlock: Add missing connect(minimal AF_UNSPEC) test selftests/landlock: Fix TCP bind(AF_UNSPEC) test case landlock: Fix TCP handling of short AF_UNSPEC addresses landlock: Fix formatting
2026-01-18Merge tag 'x86-urgent-2026-01-18' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 fixes from Ingo Molnar: - Fix resctrl initialization on Hygon CPUs - Fix resctrl memory bandwidth counters on Hygon CPUs - Fix x86 self-tests build bug * tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86: Add selftests include path for kselftest.h after centralization x86/resctrl: Fix memory bandwidth counter width for Hygon x86/resctrl: Add missing resctrl initialization for Hygon
2026-01-18Merge tag 'objtool-urgent-2026-01-18' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fixes from Ingo Molnar: "Fix two objtool build failures that trigger in uncommon build environments" * tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: fix build failure due to missing libopcodes check objtool: fix compilation failure with the x32 toolchain
2026-01-17selftests: net: improve error handling in passive TFO testYohei Kojima
Improve the error handling in passive TFO test to check the return value from sendto(), and to fail if read() or fprintf() failed. Signed-off-by: Yohei Kojima <yk@y-koj.net> Link: https://patch.msgid.link/24707c8133f7095c0e5a94afa69e75c3a80bf6e7.1768312014.git.yk@y-koj.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17selftests: net: fix passive TFO test to fail if child processes failedYohei Kojima
Improve the passive TFO test to report failure if the server or the client timed out or exited with non-zero status. Before this commit, TFO test didn't fail even if exit(EXIT_FAILURE) is added to the first line of the run_server() and run_client() functions. Signed-off-by: Yohei Kojima <yk@y-koj.net> Link: https://patch.msgid.link/214d399caec2e5de7738ced5736829915d507e4e.1768312014.git.yk@y-koj.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17tools: ynl: Specify --no-line-number in ynl-regen.sh.Kuniyuki Iwashima
If grep.lineNumber is enabled in .gitconfig, [grep] lineNumber = true ynl-regen.sh fails with the following error: $ ./tools/net/ynl/ynl-regen.sh -f ... ynl_gen_c.py: error: argument --mode: invalid choice: '4:' (choose from user, kernel, uapi) GEN 4: net/ipv4/fou_nl.c Let's specify --no-line-number explicitly. Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260115172533.693652-3-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-17lkdtm/bugs: Add __counted_by_ptr() test PTR_BOUNDSKees Cook
Provide run-time validation of the __counted_by_ptr() annotation via newly added PTR_BOUNDS LKDTM test. Link: https://patch.msgid.link/20251020220118.1226740-2-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2026-01-17selftests: vDSO: getrandom: Fix path to s390 chacha implementationThomas Weißschuh
The s390 vDSO source directory was recently moved, but this reference was not updated. Fixes: c0087d807ae8 ("s390/vdso: Rename vdso64 to vdso") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2026-01-17selftests/x86: Add selftests include path for kselftest.h after centralizationBala-Vignesh-Reddy
The previous change centralizing kselftest.h include path in lib.mk caused x86 selftests to fail, as x86 Makefile overwrites CFLAGS using ":=", dropping the include path added in lib.mk. Therefore, helpers.h could not find kselftest.h during compilation. Fix this by adding the tools/testing/sefltest to CFLAGS in x86 Makefile. [ bp: Correct commit ID in Fixes: ] Fixes: e6fbd1759c9e ("selftests: complete kselftest include centralization") Closes: https://lore.kernel.org/lkml/CA+G9fYvKjQcCBMfXA-z2YuL2L+3Qd-pJjEUDX8PDdz2-EEQd=Q@mail.gmail.com/T/#m83fd330231287fc9d6c921155bee16c591db7360 Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Tested-by: Anders Roxell <anders.roxell@linaro.org> Tested-by: Brendan Jackman <jackmanb@google.com> Link: https://patch.msgid.link/20251022062948.162852-1-reddybalavignesh9979@gmail.com
2026-01-16tools/power/x86/intel-speed-select: v1.25 releaseSrinivas Pandruvada
This version includes the following changes: - Allow read only commands for non root users when permitted - Fix file descriptor leak in isolate_cpus() - Replace hardcoded libnl3 include path Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2026-01-16tools/power/x86/intel-speed-select: Fix file descriptor leak in isolate_cpus()Malaya Kumar Rout
The file descriptor opened in isolate_cpus() when (!level) is true was not being closed before returning, causing a file descriptor leak in both the error path and the success path. When write() fails at line 950, the function returns at line 953 without closing the file descriptor. Similarly, on success, the function returns at line 956 without closing the file descriptor. Add close(fd) calls before both return statements to fix the resource leak. This follows the same pattern used elsewhere in the same function where file descriptors are properly closed before returning (see lines 1005 and 1027). Fixes: 997074df658e ("tools/power/x86/intel-speed-select: Use cgroup v2 isolation") Signed-off-by: Malaya Kumar Rout <mrout@redhat.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2026-01-16tools/power/x86/intel-speed-select: Use pkg-config for libnl-3.0 detectionKhem Raj
Replace hardcoded libnl3 include path with pkg-config detection to improve portability across different distributions and build environments. The previous implementation used a fixed path constructed from the compiler's sysroot, which could fail on systems with non-standard library installations. Now the build system: - Attempts to detect libnl-3.0 include paths using pkg-config - Falls back to /usr/include/libnl3 if pkg-config is unavailable - Maintains backward compatibility with existing build configurations This ensures the tool builds correctly on a wider range of systems while preserving existing behavior when pkg-config is not present. Closes:https://bugzilla.kernel.org/show_bug.cgi?id=220819 Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2026-01-16tools/power/x86/intel-speed-select: Allow non root usersSrinivas Pandruvada
When permitted by the file /dev/isst_interface, allow to issue commands for non root users. When user id is non root, check if "/dev/isst_interface" can still be opened. If this file can be opened, allow all read only commands. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2026-01-16selftests/bpf: Fix map_kptr test failureYonghong Song
On my arm64 machine, I get the following failure: ... tester_init:PASS:tester_log_buf 0 nsec process_subtest:PASS:obj_open_mem 0 nsec process_subtest:PASS:specs_alloc 0 nsec serial_test_map_kptr:PASS:rcu_tasks_trace_gp__open_and_load 0 nsec ... test_map_kptr_success:PASS:map_kptr__open_and_load 0 nsec test_map_kptr_success:PASS:test_map_kptr_ref1 refcount 0 nsec test_map_kptr_success:FAIL:test_map_kptr_ref1 retval unexpected error: 2 (errno 2) test_map_kptr_success:PASS:test_map_kptr_ref2 refcount 0 nsec test_map_kptr_success:FAIL:test_map_kptr_ref2 retval unexpected error: 1 (errno 2) ... #201/21 map_kptr/success-map:FAIL In serial_test_map_kptr(), before test_map_kptr_success(), one kern_sync_rcu() is used to have some delay for freeing the map. But in my environment, one kern_sync_rcu() seems not enough and caused the test failure. In bpf_map_free_in_work() in syscall.c, the queue time for queue_work(system_dfl_wq, &map->work) may be longer than expected. This may cause the test failure since test_map_kptr_success() expects all previous maps having been freed. Since it is not clear how long queue_work() time takes, a bpf prog is added to count the reference after bpf_kfunc_call_test_acquire(). If the number of references is 2 (for initial ref and the one just acquired), all previous maps should have been released. This will resolve the above 'retval unexpected error' issue. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/bpf/20260116052245.3692405-1-yonghong.song@linux.dev
2026-01-16selftests/bpf: Support when CONFIG_VXLAN=mAlan Maguire
If CONFIG_VXLAN is 'm', struct vxlanhdr will not be in vmlinux.h. Add a ___local variant to support cases where vxlan is a module. Fixes: 8517b1abe5ea ("selftests/bpf: Integrate test_tc_tunnel.sh tests into test_progs") Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20260115163457.146267-1-alan.maguire@oracle.com
2026-01-16bpftool: Add 'prepend' option for tcx attach to insert at chain startGyutae Bae
Add support for the 'prepend' option when attaching tcx_ingress and tcx_egress programs. This option allows inserting a BPF program at the beginning of the TCX chain instead of appending it at the end. The implementation uses BPF_F_BEFORE flag which automatically inserts the program at the beginning of the chain when no relative reference is specified. This change includes: - Modify do_attach_tcx() to support prepend insertion using BPF_F_BEFORE - Update documentation to describe the new 'prepend' option - Add bash completion support for the 'prepend' option on tcx attach types - Add example usage in the documentation - Add validation to reject 'overwrite' for non-XDP attach types The 'prepend' option is only valid for tcx_ingress and tcx_egress attach types. For XDP attach types, the existing 'overwrite' option remains available. Example usage: # bpftool net attach tcx_ingress name tc_prog dev lo prepend This feature is useful when the order of program execution in the TCX chain matters and users need to ensure certain programs run first. Co-developed-by: Siwan Kim <siwan.kim@navercorp.com> Signed-off-by: Siwan Kim <siwan.kim@navercorp.com> Signed-off-by: Gyutae Bae <gyutae.bae@navercorp.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Quentin Monnet <qmo@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20260112034516.22723-1-gyutae.opensource@navercorp.com
2026-01-16x86/entry/vdso/selftest: Update location of vgetrandom-chacha.SH. Peter Anvin
As part of the vdso build restructuring, vgetrandom-chacha.S moved into the vdso/vdso64 subdirectory. Update the selftest #include to match. Closes: https://lore.kernel.org/oe-lkp/202601161608.5cd5af9a-lkp@intel.com Fixes: 693c819fedcd ("x86/entry/vdso: Refactor the vdso build") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://patch.msgid.link/20260116204057.386268-4-hpa@zytor.com
2026-01-16Merge tag 'cxl-fixes-6.19-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull Compute Express Link (CXL) fixes from Dave Jiang: - Recognize all ZONE_DEVICE users as physaddr consumers - Fix format string for extended_linear_cache_size_show() - Fix target list setup for multiple decoders sharing the same downstream port - Restore HBIW check before derefernce platform data - Fix potential infinite loop in __cxl_dpa_reserve() - Check for invalid addresses returned from translation functions on error * tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl: Check for invalid addresses returned from translation functions on errors cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve() cxl/acpi: Restore HBIW check before dereferencing platform_data cxl/port: Fix target list setup for multiple decoders sharing the same dport cxl/region: fix format string for resource_size_t x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers
2026-01-16selftests/run_kselftest.sh: Add `--skip` argument optionRicardo B. Marlière
Currently the only way of excluding certain tests from a collection is by passing all the other tests explicitly via `--test`. Therefore, if the user wants to skip a single test the resulting command line might be too big, depending on the collection. Add an option `--skip` that takes care of that. Link: https://lore.kernel.org/r/20260116-selftests-add_skip_opt-v1-1-ab54afaae81b@suse.com Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-01-16cpupower: make systemd unit installation optionalJoão Marcos Costa
cpupower currently installs a cpupower.service unit file into unitdir unconditionally, regardless of whether systemd is used by the host. Improve the installation procedure by making this systemd step optional: a 'SYSTEMD' build parameter that defaults to 'true' and can be set to 'false' to disable the installation of systemd's unit file. Since 'SYSTEMD' defaults to true, the current behavior is kept as the default. Link: https://lore.kernel.org/r/20260113132753.1730020-2-joaomarcos.costa@bootlin.com Signed-off-by: João Marcos Costa <joaomarcos.costa@bootlin.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-01-16selftests/open_tree: add OPEN_TREE_NAMESPACE testsChristian Brauner
Add tests for OPEN_TREE_NAMESPACE. Link: https://patch.msgid.link/20251229-work-empty-namespace-v1-2-bfb24c7b061f@kernel.org Tested-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-01-16selftests: bpf: Add test for multiple syncs from linked registerPuranjay Mohan
Before the last commit, sync_linked_regs() corrupted the register whose bounds are being updated by copying known_reg's id to it. The ids are the same in value but known_reg has the BPF_ADD_CONST flag which is wrongly copied to reg. This later causes issues when creating new links to this reg. assign_scalar_id_before_mov() sees this BPF_ADD_CONST and gives a new id to this register and breaks the old links. This is exposed by the added selftest. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20260115151143.1344724-3-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-01-16KVM: selftests: Test READ=>WRITE dirty logging behavior for shadow MMUSean Christopherson
Update the nested dirty log test to validate KVM's handling of READ faults when dirty logging is enabled. Specifically, set the Dirty bit in the guest PTEs used to map L2 GPAs, so that KVM will create writable SPTEs when handling L2 read faults. When handling read faults in the shadow MMU, KVM opportunistically creates a writable SPTE if the mapping can be writable *and* the gPTE is dirty (or doesn't support the Dirty bit), i.e. if KVM doesn't need to intercept writes in order to emulate Dirty-bit updates. To actually test the L2 READ=>WRITE sequence, e.g. without masking a false pass by other test activity, route the READ=>WRITE and WRITE=>WRITE sequences to separate L1 pages, and differentiate between "marked dirty due to a WRITE access/fault" and "marked dirty due to creating a writable SPTE for a READ access/fault". The updated sequence exposes the bug fixed by KVM commit 1f4e5fc83a42 ("KVM: x86: fix nested guest live migration with PML") when the guest performs a READ=>WRITE sequence with dirty guest PTEs. Opportunistically tweak and rename the address macros, and add comments, to make it more obvious what the test is doing. E.g. NESTED_TEST_MEM1 vs. GUEST_TEST_MEM doesn't make it all that obvious that the test is creating aliases in both the L2 GPA and GVA address spaces, but only when L1 is using TDP to run L2. Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev> Link: https://patch.msgid.link/20260115172154.709024-1-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-01-15selftests: net: fib-onlink-tests: Convert to use namespaces by defaultRicardo B. Marlière
Currently, the test breaks if the SUT already has a default route configured for IPv6. Fix by avoiding the use of the default namespace. Fixes: 4ed591c8ab44 ("net/ipv6: Allow onlink routes to have a device mismatch if it is the default route") Suggested-by: Fernando Fernandez Mancera <fmancera@suse.de> Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de> Link: https://patch.msgid.link/20260113-selftests-net-fib-onlink-v2-1-89de2b931389@suse.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15vsock/test: Add test for a linear and non-linear skb getting coalescedMichal Luczaj
Loopback transport can mangle data in rx queue when a linear skb is followed by a small MSG_ZEROCOPY packet. To exercise the logic, send out two packets: a weirdly sized one (to ensure some spare tail room in the skb) and a zerocopy one that's small enough to fit in the spare room of its predecessor. Then, wait for both to land in the rx queue, and check the data received. Faulty packets merger manifests itself by corrupting payload of the later packet. Signed-off-by: Michal Luczaj <mhal@rbox.co> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://patch.msgid.link/20260113-vsock-recv-coalescence-v2-2-552b17837cf4@rbox.co Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.19-rc6). No conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-15selftests/bpf: Add test for bpf_override_return helperJiri Olsa
We do not actually test the bpf_override_return helper functionality itself at the moment, only the bpf program being able to attach it. Adding test that override prctl syscall return value on top of kprobe and kprobe.multi. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/bpf/20260112121157.854473-2-jolsa@kernel.org
2026-01-15Merge tag 'mm-hotfixes-stable-2026-01-15-08-03' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: - kerneldoc fixes from Bagas Sanjaya - DAMON fixes from SeongJae - mremap VMA-related fixes from Lorenzo - various singletons - please see the changelogs for details * tag 'mm-hotfixes-stable-2026-01-15-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (30 commits) drivers/dax: add some missing kerneldoc comment fields for struct dev_dax mm: numa,memblock: include <asm/numa.h> for 'numa_nodes_parsed' mailmap: add entry for Daniel Thompson tools/testing/selftests: fix gup_longterm for unknown fs mm/page_alloc: prevent pcp corruption with SMP=n iommu/sva: include mmu_notifier.h header mm: kmsan: fix poisoning of high-order non-compound pages tools/testing/selftests: add forked (un)/faulted VMA merge tests mm/vma: enforce VMA fork limit on unfaulted,faulted mremap merge too tools/testing/selftests: add tests for !tgt, src mremap() merges mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge mm/zswap: fix error pointer free in zswap_cpu_comp_prepare() mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure mm/damon/sysfs-scheme: cleanup quotas subdirs on scheme dir setup failure mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure mm/damon/sysfs: cleanup intervals subdirs on attrs dir setup failure mm/damon/core: remove call_control in inactive contexts powerpc/watchdog: add support for hardlockup_sys_info sysctl mips: fix HIGHMEM initialization mm/hugetlb: ignore hugepage kernel args if hugepages are unsupported ...
2026-01-15Merge tag 'net-6.19-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from bluetooth, can and IPsec. Current release - regressions: - net: add net.core.qdisc_max_burst - can: propagate CAN device capabilities via ml_priv Previous releases - regressions: - dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() - ipv6: fix use-after-free in inet6_addr_del(). - xfrm: fix inner mode lookup in tunnel mode GSO segmentation - ip_tunnel: spread netdev_lockdep_set_classes() - ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() - bluetooth: hci_sync: enable PA sync lost event - eth: virtio-net: - fix the deadlock when disabling rx NAPI - fix misalignment bug in struct virtnet_info Previous releases - always broken: - ipv4: ip_gre: make ipgre_header() robust - can: fix SSP_SRC in cases when bit-rate is higher than 1 MBit. - eth: - mlx5e: profile change fix - octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback - macvlan: fix possible UAF in macvlan_forward_source()" * tag 'net-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (37 commits) virtio_net: Fix misalignment bug in struct virtnet_info net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts can: raw: instantly reject disabled CAN frames can: propagate CAN device capabilities via ml_priv Revert "can: raw: instantly reject unsupported CAN frames" net/sched: sch_qfq: do not free existing class in qfq_change_class() selftests: drv-net: fix RPS mask handling for high CPU numbers selftests: drv-net: fix RPS mask handling in toeplitz test ipv6: Fix use-after-free in inet6_addr_del(). dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() net: hv_netvsc: reject RSS hash key programming without RX indirection table tools: ynl: render event op docs correctly net: add net.core.qdisc_max_burst net: airoha: Fix typo in airoha_ppe_setup_tc_block_cb definition net: phy: motorcomm: fix duplex setting error for phy leds net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback net/mlx5e: Restore destroying state bit after profile cleanup net/mlx5e: Pass netdev to mlx5e_destroy_netdev instead of priv net/mlx5e: Don't store mlx5e_priv in mlx5e_dev devlink priv net/mlx5e: Fix crash on profile change rollback failure ...
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-14 05:24:48 +0000