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2026-02-26selftests/bpf: Fix a memory leak in xdp_flowtable testIhor Solodrai
test_progs run with ASAN reported [1]: ==126==ERROR: LeakSanitizer: detected memory leaks Direct leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7f1ff3cfa340 in calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:77 #1 0x5610c15bb520 in bpf_program_attach_fd /codebuild/output/src685977285/src/actions-runner/_work/vmtest/vmtest/src/tools/lib/bpf/libbpf.c:13164 #2 0x5610c15bb740 in bpf_program__attach_xdp /codebuild/output/src685977285/src/actions-runner/_work/vmtest/vmtest/src/tools/lib/bpf/libbpf.c:13204 #3 0x5610c14f91d3 in test_xdp_flowtable /codebuild/output/src685977285/src/actions-runner/_work/vmtest/vmtest/src/tools/testing/selftests/bpf/prog_tests/xdp_flowtable.c:138 #4 0x5610c1533566 in run_one_test /codebuild/output/src685977285/src/actions-runner/_work/vmtest/vmtest/src/tools/testing/selftests/bpf/test_progs.c:1406 #5 0x5610c1537fb0 in main /codebuild/output/src685977285/src/actions-runner/_work/vmtest/vmtest/src/tools/testing/selftests/bpf/test_progs.c:2097 #6 0x7f1ff25df1c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 8e9fd827446c24067541ac5390e6f527fb5947bb) #7 0x7f1ff25df28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 8e9fd827446c24067541ac5390e6f527fb5947bb) #8 0x5610c0bd3180 in _start (/tmp/work/vmtest/vmtest/selftests/bpf/test_progs+0x593180) (BuildId: cdf9f103f42307dc0a2cd6cfc8afcbc1366cf8bd) Fix by properly destroying bpf_link on exit in xdp_flowtable test. [1] https://github.com/kernel-patches/vmtest/actions/runs/22361085418/job/64716490680 Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com> Link: https://lore.kernel.org/r/20260225003351.465104-1-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.0-rc2). Conflicts: tools/testing/selftests/drivers/net/hw/rss_ctx.py 19c3a2a81d2b ("selftests: drv-net: rss: Generate unique ports for RSS context tests") ce5a0f4612db ("selftests: drv-net: rss_ctx: test RSS contexts persist after ifdown/up") include/net/inet_connection_sock.h 858d2a4f67ff6 ("tcp: fix potential race in tcp_v6_syn_recv_sock()") fcd3d039fab69 ("tcp: make tcp_v{4,6}_send_check() static") https://lore.kernel.org/aZ8PSFLzBrEU3I89@sirena.org.uk drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c drivers/net/ethernet/mellanox/mlx5/core/en/xsk/pool.c 69050f8d6d075 ("treewide: Replace kmalloc with kmalloc_obj for non-scalar types") bf4afc53b77ae ("Convert 'alloc_obj' family to use the new default GFP_KERNEL argument") 8a96b9144f18a ("net/mlx5e: Alloc xsk channel param out of mlx5e_open_xsk()") Adjacent changes: net/netfilter/ipvs/ip_vs_ctl.c c59bd9e62e06 ("ipvs: use more counters to avoid service lookups") bf4afc53b77a ("Convert 'alloc_obj' family to use the new default GFP_KERNEL argument") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-26Merge tag 'net-7.0-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from IPsec, Bluetooth and netfilter Current release - regressions: - wifi: fix dev_alloc_name() return value check - rds: fix recursive lock in rds_tcp_conn_slots_available Current release - new code bugs: - vsock: lock down child_ns_mode as write-once Previous releases - regressions: - core: - do not pass flow_id to set_rps_cpu() - consume xmit errors of GSO frames - netconsole: avoid OOB reads, msg is not nul-terminated - netfilter: h323: fix OOB read in decode_choice() - tcp: re-enable acceptance of FIN packets when RWIN is 0 - udplite: fix null-ptr-deref in __udp_enqueue_schedule_skb(). - wifi: brcmfmac: fix potential kernel oops when probe fails - phy: register phy led_triggers during probe to avoid AB-BA deadlock - eth: - bnxt_en: fix deleting of Ntuple filters - wan: farsync: fix use-after-free bugs caused by unfinished tasklets - xscale: check for PTP support properly Previous releases - always broken: - tcp: fix potential race in tcp_v6_syn_recv_sock() - kcm: fix zero-frag skb in frag_list on partial sendmsg error - xfrm: - fix race condition in espintcp_close() - always flush state and policy upon NETDEV_UNREGISTER event - bluetooth: - purge error queues in socket destructors - fix response to L2CAP_ECRED_CONN_REQ - eth: - mlx5: - fix circular locking dependency in dump - fix "scheduling while atomic" in IPsec MAC address query - gve: fix incorrect buffer cleanup for QPL - team: avoid NETDEV_CHANGEMTU event when unregistering slave - usb: validate USB endpoints" * tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits) netfilter: nf_conntrack_h323: fix OOB read in decode_choice() dpaa2-switch: validate num_ifs to prevent out-of-bounds write net: consume xmit errors of GSO frames vsock: document write-once behavior of the child_ns_mode sysctl vsock: lock down child_ns_mode as write-once selftests/vsock: change tests to respect write-once child ns mode net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query net/mlx5: Fix missing devlink lock in SRIOV enable error path net/mlx5: E-switch, Clear legacy flag when moving to switchdev net/mlx5: LAG, disable MPESW in lag_disable_change() net/mlx5: DR, Fix circular locking dependency in dump selftests: team: Add a reference count leak test team: avoid NETDEV_CHANGEMTU event when unregistering slave net: mana: Fix double destroy_workqueue on service rescan PCI path MAINTAINERS: Update maintainer entry for QUALCOMM ETHQOS ETHERNET DRIVER dpll: zl3073x: Remove redundant cleanup in devm_dpll_init() selftests/net: packetdrill: Verify acceptance of FIN packets when RWIN is 0 tcp: re-enable acceptance of FIN packets when RWIN is 0 vsock: Use container_of() to get net namespace in sysctl handlers net: usb: kaweth: validate USB endpoints ...
2026-02-26selftests/vsock: change tests to respect write-once child ns modeBobby Eshleman
The child_ns_mode sysctl parameter becomes write-once in a future patch in this series, which breaks existing tests. This patch updates the tests to respect this new policy. No additional tests are added. Add "global-parent" and "local-parent" namespaces as intermediaries to spawn namespaces in the given modes. This avoids the need to change "child_ns_mode" in the init_ns. nsenter must be used because ip netns unshares the mount namespace so nested "ip netns add" breaks exec calls from the init ns. Adds nsenter to the deps check. Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Link: https://patch.msgid.link/20260223-vsock-ns-write-once-v3-1-c0cde6959923@meta.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-25selftests: drv-net: rss: Generate unique ports for RSS context testsDimitri Daskalakis
The RSS ctx tests rely on NFC rules with unique ports to steer packets to the correct ctx. This updates the test to use the new rand_ports() helper to guarantee the ports are unique. Manual testing shows that generating 32 ports with the existing method would result in at least one duplicate 4% of the time. Signed-off-by: Dimitri Daskalakis <dimitri.daskalakis1@gmail.com> Link: https://patch.msgid.link/20260224224659.1507082-3-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25selftests: net: py: Add rand_ports helper methodDimitri Daskalakis
Certain tests need a unique set of ports. Successive calls to the existing rand_port method may return a duplicate port, resulting in test flakiness. The new helper keeps sockets open while building a list of ephemeral ports, thus the kernel enforces their uniqueness. Signed-off-by: Dimitri Daskalakis <dimitri.daskalakis1@gmail.com> Link: https://patch.msgid.link/20260224224659.1507082-2-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25selftests: team: Add a reference count leak testIdo Schimmel
Add a test for the issue that was fixed in "team: avoid NETDEV_CHANGEMTU event when unregistering slave". The test hangs due to a reference count leak without the fix: # make -C tools/testing/selftests TARGETS="drivers/net/team" TEST_PROGS=refleak.sh TEST_GEN_PROGS="" run_tests [...] TAP version 13 1..1 # timeout set to 45 # selftests: drivers/net/team: refleak.sh [ 50.681299][ T496] unregister_netdevice: waiting for dummy1 to become free. Usage count = 3 [ 71.185325][ T496] unregister_netdevice: waiting for dummy1 to become free. Usage count = 3 And passes with the fix: # make -C tools/testing/selftests TARGETS="drivers/net/team" TEST_PROGS=refleak.sh TEST_GEN_PROGS="" run_tests [...] TAP version 13 1..1 # timeout set to 45 # selftests: drivers/net/team: refleak.sh ok 1 selftests: drivers/net/team: refleak.sh Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260224125709.317574-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25selftests/net: packetdrill: Verify acceptance of FIN packets when RWIN is 0Simon Baatz
Add a packetdrill test that verifies we accept bare FIN packets when the advertised receive window is zero. Signed-off-by: Simon Baatz <gmbnomis@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20260224-fix_zero_wnd_fin-v2-2-a16677ea7cea@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25selftests: hw-net: tso: set a TCP window clamp to avoid spurious dropsJakub Kicinski
The TSO test wants to make sure that there isn't a lot of retransmits, because that could indicate that device has a buggy TSO implementation. On debug kernels, however, we're likely to see significant packet loss because we simply overwhelm the receiver. In a QEMU loop with virtio devices we see ~10% false positive rate with occasional run hitting the threshold of 25% packet loss. Since we're only sending 4MB of data, set a TCP_WINDOW_CLAMP to 200k. This seems to make virtio happy while having little impact since we're primarily interested in testing the sender, and the test doesn't currently enable BIG TCP. Running socat over virtio loop for 2 sec on a debug kernel shows: TcpOutSegs 27327 0.0 TcpRetransSegs 83 0.0 TcpOutSegs 30012 0.0 TcpRetransSegs 80 0.0 TcpOutSegs 28767 0.0 TcpRetransSegs 77 0.0 But with the clamp the 3 attempts show no retransmit: TcpOutSegs 31537 0.0 TcpRetransSegs 0 0.0 TcpOutSegs 30323 0.0 TcpRetransSegs 0 0.0 TcpOutSegs 28700 0.0 TcpRetransSegs 0 0.0 Since we expect no receiver-related drops now we can significantly increase test's sensitivity to drops. All the testing we do in NIPA uses cubic. Link: https://patch.msgid.link/20260223204030.4142884-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-25kselftest: arm64: Check access to GCS after mprotect(PROT_NONE)Catalin Marinas
A GCS mapping should not be accessible after mprotect(PROT_NONE). Add a kselftest for this scenario. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: Mark Brown <broonie@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: David Hildenbrand <david@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
2026-02-24selftests: net: py: add cmd info for ksft_wait failureJakub Kicinski
Gal recently complained: When [ksft_wait failure] happens, the test fails with a cryptic message: # Exception| Exception: Did not receive ready message Let's try to include the stdout/stderr of the command we tried to start. E.g. for cmd("false", ksft_wait=True): # Exception| lib.py.utils.CmdInitFailure: Did not receive ready message # Exception| CMD: false # Exception| EXIT: 1 We need to factor out _process_terminate() otherwise the exit path may try to write to already disconnected self.ksft_term_fd. Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260223202633.4126087-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-24selftests: net: py: use repr(cmd) for failure exceptionsJakub Kicinski
Reuse repr(cmd) instead of manually formatting a similar string. Before: # Exception| lib.py.utils.CmdExitFailure: Command failed: false # Exception| STDOUT: b'' # Exception| STDERR: b'' After: # Exception| lib.py.utils.CmdExitFailure: Command failed # Exception| CMD: false # Exception| EXIT: 1 Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260223202633.4126087-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-24selftests: net: py: avoid masking exceptions in bkg() failuresJakub Kicinski
bkg() failures are currently quite hard to debug and spot. Often we have code along the lines of: with bkg("./cmd_rx_something -p PORT"): wait_port_listen(PORT) cmd("./cmd_tx_something", host=remote) When wait_port_listen() fails we don't get to see the exit status of bkg(). Even tho very often it's a failure in the bkg() command that's actually to blame. Try not to interfere with the bkg() command error checking. With: with bkg("false", exit_wait=True): time.sleep(0.01) # let the 'false' cmd run raise Exception("bla") Before: .. stack trace .. # Exception| Exception: bla After: .. stack trace .. # Exception| Exception: bla # Exception| # Exception| During handling of the above exception, another exception occurred: .. stack trace .. # Exception| lib.py.utils.CmdExitFailure: Command failed: false # Exception| STDOUT: b'' # Exception| STDERR: b'' Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260223202633.4126087-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-24selftests/bpf: Test accounting of tail calls when prog is NULLHari Bathini
Test whether tail call count is incorrectly accounted for, when the tail call fails due to a missing BPF program. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Link: https://lore.kernel.org/r/20260216090802.1805655-1-hbathini@linux.ibm.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix flakiness of task_local_storage/sys_enter_exitIhor Solodrai
The test_sys_enter_exit test was setting target_pid before attaching the BPF programs, which causes syscalls made during the attach phase to be counted. This is flaky because, apparently, there is no guarantee that both on_enter and on_exit will trigger during the attachment. Move the target_pid assignment to after task_local_storage__attach() so that only explicit sys_gettid() calls are counted. Reported-by: BPF CI Bot (Claude Opus 4.6) <bot+bpf-ci@kernel.org> Closes: https://github.com/kernel-patches/vmtest/issues/448 Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/r/20260224211202.214325-1-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Don't override SIGSEGV handler with ASANIhor Solodrai
test_progs has custom SIGSEGV handler, which interferes with the address sanitizer [1]. Add an #ifndef to avoid this. Additionally, declare an __asan_on_error() to dump the test logs in the same way it happens in the custom SIGSEGV handler. [1] https://lore.kernel.org/bpf/73d832948b01dbc0ebc60d85574bdf8537f3a810.camel@gmail.com/ Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223191118.655185-3-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Check BPFTOOL env var in detect_bpftool_path()Ihor Solodrai
The bpftool_maps_access and bpftool_metadata tests may fail on BPF CI with "command not found", depending on a workflow. This happens because detect_bpftool_path() only checks two hardcoded relative paths: - ./tools/sbin/bpftool - ../tools/sbin/bpftool Add support for a BPFTOOL environment variable that allows specifying the exact path to the bpftool binary. Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223191118.655185-2-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix out-of-bounds array access bugs reported by ASANIhor Solodrai
- kmem_cache_iter: remove unnecessary debug output - lwt_seg6local: change the type of foobar to char[] - the sizeof(foobar) returned the pointer size and not a string length as intended - verifier_log: increase prog_name buffer size in verif_log_subtest() - compiler has a conservative estimate of fixed_log_sz value, making ASAN complain on snprint() call Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223191118.655185-1-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix array bounds warning in jit_disasm_helpersIhor Solodrai
Compiler cannot infer upper bound for labels.cnt and warns about potential buffer overflow in snprintf. Add an explicit bounds check (... && i < MAX_LOCAL_LABELS) in the loop condition to fix the warning. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-18-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Free bpf_object in test_sysctlIhor Solodrai
ASAN reported a resource leak due to the bpf_object not being tracked in test_sysctl. Add obj field to struct sysctl_test to properly clean it up. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-17-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix resource leaks caused by missing cleanupsIhor Solodrai
ASAN reported a number of resource leaks: - Add missing *__destroy(skel) calls - Replace bpf_link__detach() with bpf_link__destroy() where appropriate - cgrp_local_storage: Add bpf_link__destroy() when bpf_iter_create fails - dynptr: Add missing bpf_object__close() Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-16-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix double thread join in uprobe_multi_testIhor Solodrai
ASAN reported a "joining already joined thread" error. The release_child() may be called multiple times for the same struct child. Fix by resetting child->thread to 0 after pthread_join. Also memset(0) static child variable in test_attach_api(). Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-15-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix use-after-free in xdp_metadata testIhor Solodrai
ASAN reported a use-after-free in close_xsk(). The xsk->socket internally references xsk->umem via socket->ctx->umem, so the socket must be deleted before the umem. Fix the order of operations in close_xsk(). Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-14-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24veristat: Fix a memory leak for preset ENUMERATORIhor Solodrai
ASAN detected a memory leak in veristat. The cleanup code handling ENUMERATOR value missed freeing strdup-ed svalue. Fix it. Acked-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-13-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix cleanup in check_fd_array_cnt__fd_array_too_big()Ihor Solodrai
The Close() macro uses the passed in expression three times, which leads to repeated execution in case it has side effects. That is, Close(i--) would decrement i three times. ASAN caught a stack-buffer-undeflow error at a point where this was overlooked. Fix it. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-12-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Fix memory leaks in testsIhor Solodrai
Fix trivial memory leaks detected by userspace ASAN: - htab_update: free value buffer in test_reenter_update cleanup - test_xsk: inline pkt_stream_replace() in testapp_stats_rx_full() and testapp_stats_fill_empty() - testing_helpers: free buffer allocated by getline() in parse_test_list_file Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-11-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Refactor bpf_get_ksyms() trace helperIhor Solodrai
ASAN reported a memory leak in bpf_get_ksyms(): it allocates a struct ksyms internally and never frees it. Move struct ksyms to trace_helpers.h and return it from the bpf_get_ksyms(), giving ownership to the caller. Add filtered_syms and filtered_cnt fields to the ksyms to hold the filtered array of symbols, previously returned by bpf_get_ksyms(). Fixup the call sites: kprobe_multi_test and bench_trigger. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20260223190736.649171-10-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Add DENYLIST.asanIhor Solodrai
Add a denylist file for tests that should be skipped when built with userspace ASAN: $ make ... SAN_CFLAGS="-fsanitize=address -fno-omit-frame-pointer" Skip the following tests: - *arena*: userspace ASAN does not understand BPF arena maps and gets confused particularly when map_extra is non-zero - non-zero map_extra leads to mmap with MAP_FIXED, and ASAN treats this as an unknown memory region - task_local_data: ASAN complains about "incorrect" aligned_alloc() usage, but it's intentional in the test - uprobe_multi_test: very slow with ASAN enabled Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-9-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Pass through build flags to bpftool and resolve_btfidsIhor Solodrai
EXTRA_* and SAN_* build flags were not correctly propagated to bpftool and resolve_btids when building selftests/bpf. This led to various build errors on attempt to build with SAN_CFLAGS="-fsanitize=address", for example. Fix the makefiles to address this: - Pass SAN_CFLAGS/SAN_LDFLAGS to bpftool and resolve_btfids build - Propagate EXTRA_LDFLAGS to resolve_btfids link command - Use pkg-config to detect zlib and zstd for resolve_btfids, similar libelf handling Also check for ASAN flag in selftests/bpf/Makefile for convenience. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-7-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Use memcpy() for bounded non-NULL-terminated copiesIhor Solodrai
Replace strncpy() with memcpy() in cases where the source is non-NULL-terminated and the copy length is known. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-6-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Use strscpy in bpftool_helpers.cIhor Solodrai
Replace strncpy() calls in bpftool_helpers.c with strscpy(). Pass the destination buffer size to detect_bpftool_path() instead of hardcoding BPFTOOL_PATH_MAX_LEN. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-5-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests/bpf: Replace strncpy() with strscpy()Ihor Solodrai
strncpy() does not guarantee NULL-termination and is considered deprecated [1]. Replace strncpy() calls with strscpy(). [1] https://docs.kernel.org/process/deprecated.html#strncpy-on-nul-terminated-strings Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-4-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-24selftests: tc-testing: preserve list order when removing duplicatesNaveen Anandhan
Using set() removes duplicates but breaks ordering. Test output should be deterministic, so replace with dict.fromkeys(). Signed-off-by: Naveen Anandhan <mr.navi8680@gmail.com> Link: https://patch.msgid.link/20260222095536.17371-1-mr.navi8680@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-24selftests: pci_endpoint: Skip doorbell test when unsupportedKoichiro Den
PCITEST_DOORBELL may return -EOPNOTSUPP when the endpoint does not advertise CAP_DYNAMIC_INBOUND_MAPPING. Treat this like other optional capabilities and skip the doorbell test instead of reporting a failure. Suggested-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Koichiro Den <den@valinux.co.jp> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Niklas Cassel <cassel@kernel.org> Link: https://patch.msgid.link/20260215150334.3391943-4-den@valinux.co.jp
2026-02-24selftests: hid: tests: test_wacom_generic: add tests for display devices and ↵Alex Tran
opaque devices Verify Wacom devices set INPUT_PROP_DIRECT on display devices and INPUT_PROP_POINTER on opaque devices. Verify INPUT_PROP_POINTER is not set on display devices and INPUT_PROP_DIRECT is not set on opaque devices. Moved test_prop_pointer into TestOpaqueTablet. Created a DirectTabletTest mixin class for test_prop_direct that can be inherited by display tablet test classes.Used DirectTabletTest for TestDTH2452Tablet case. Signed-off-by: Alex Tran <alex.t.tran@gmail.com> Tested-by: Erin Skomra <erin.skomra@wacom.com> Reviewed-by: Erin Skomra <erin.skomra@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2026-02-23selftests/bpf: Replace strcpy() calls with strscpy()Ihor Solodrai
strcpy() does not perform bounds checking and is considered deprecated [1]. Replace strcpy() calls with strscpy() defined in bpf_util.h. [1] https://docs.kernel.org/process/deprecated.html#strcpy Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-3-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/bpf: Add simple strscpy() implementationIhor Solodrai
Replace bpf_strlcpy() in bpf_util.h with a sized_strscpy(), which is a simplified sized_strscpy() from the kernel (lib/string.c [1]). It: * takes a count (destination size) parameter * guarantees NULL-termination * returns the number of characters copied or -E2BIG Re-define strscpy macro similar to in-kernel implementation [2]: allow the count parameter to be optional. Add #ifdef-s to tools/include/linux/args.h, as they may be defined in other system headers (for example, __CONCAT in sys/cdefs.h). Fixup the single existing bpf_strlcpy() call in cgroup_helpers.c [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/lib/string.c?h=v6.19#n113 [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/string.h?h=v6.19#n91 Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Link: https://lore.kernel.org/r/20260223190736.649171-2-ihor.solodrai@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/bpf: Update task local data licenseAmery Hung
Change the license of task local data mini library to LGPL-2.1 or BSD-2-Clause to allow it being in a wider range of projects. Signed-off-by: Amery Hung <ameryhung@gmail.com> Link: https://lore.kernel.org/r/20260219225849.2426421-1-ameryhung@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/bpf: Enable test for instruction array on arm64Abhishek Dubey
As arm64 JIT now supports instruction array, make sure all relevant tests run on this architecture. Summary: 1/9 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com> Acked-by: Anton Protopopov <a.s.protopopov@gmail.com> Link: https://lore.kernel.org/r/20260223203511.118475-1-adubey@linux.ibm.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/bpf: Add test case for rbtree nodes that contain both bpf_refcount ↵Kaitao Cheng
and kptr fields. Allow bpf_kptr_xchg to directly operate on pointers marked with NON_OWN_REF | MEM_RCU. In the example demonstrated in this patch, as long as "struct bpf_refcount ref" exists, the __kptr pointer is guaranteed to carry the MEM_RCU flag. The ref member itself does not need to be explicitly used. Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn> Link: https://lore.kernel.org/r/20260214124042.62229-6-pilgrimtao@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/bpf: Add supplementary tests for bpf_kptr_xchgKaitao Cheng
1. Allow using bpf_kptr_xchg while holding a lock. 2. When the rb_node contains a __kptr pointer, we do not need to perform a remove-read-add operation. This patch implements the following workflow: 1. Construct a rbtree with 16 elements. 2. Traverse the rbtree, locate the kptr pointer in the target node, and read the content pointed to by the pointer. 3. Remove all nodes from the rbtree. Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn> Signed-off-by: Feng Yang <yangfeng@kylinos.cn> Link: https://lore.kernel.org/r/20260214124042.62229-4-pilgrimtao@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-23selftests/net: add test for IP-in-IPv6 tunnelingLinus Heckemann
commit 81c734dae203 ("ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()") was fine in and of itself, but its backport to 6.12 (and 6.6) broke IPv4-in-IPv6 tunneling, see [1]. This adds a self-test for basic IPv4-in-IPv6 and IPv6-in-IPv6 functionality. [1]: https://lore.kernel.org/all/CAA2RiuSnH_2xc+-W6EnFEG00XjS-dszMq61JEvRjcGS31CBw=g@mail.gmail.com/ Signed-off-by: Linus Heckemann <git@sphalerite.org> Reviewed-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Ricardo B. Marlière <rbm@suse.com> Tested-by: Ricardo B. Marlière <rbm@suse.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260221114806.1231666-1-git@sphalerite.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-23cgroup/cpuset: Defer housekeeping_update() calls from CPU hotplug to workqueueWaiman Long
The cpuset_handle_hotplug() may need to invoke housekeeping_update(), for instance, when an isolated partition is invalidated because its last active CPU has been put offline. As we are going to enable dynamic update to the nozh_full housekeeping cpumask (HK_TYPE_KERNEL_NOISE) soon with the help of CPU hotplug, allowing the CPU hotplug path to call into housekeeping_update() directly from update_isolation_cpumasks() will likely cause deadlock. So we have to defer any call to housekeeping_update() after the CPU hotplug operation has finished. This is now done via the workqueue where the update_hk_sched_domains() function will be invoked via the hk_sd_workfn(). An concurrent cpuset control file write may have executed the required update_hk_sched_domains() function before the work function is called. So the work function call may become a no-op when it is invoked. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23kselftest/cgroup: Simplify test_cpuset_prs.sh by removing "S+" commandWaiman Long
The "S+" command is used in the test matrix to enable the cpuset controller. However this can be done automatically and we never use the "S-" command to disable cpuset controller. Simplify the test matrix and reduce clutter by removing the command and doing that automatically. There is no functional change to the test cases. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23selftests/sched_ext: Add test to validate ops.dequeue() semanticsAndrea Righi
Add a new kselftest to validate that the new ops.dequeue() semantics work correctly for all task lifecycle scenarios, including the distinction between terminal DSQs (where BPF scheduler is done with the task), user DSQs (where BPF scheduler manages the task lifecycle) and BPF data structures, regardless of which event performs the dispatch. The test validates the following scenarios: - From ops.select_cpu(): - scenario 0 (local DSQ): tasks dispatched to the local DSQ bypass the BPF scheduler entirely; they never enter BPF custody, so ops.dequeue() is not called, - scenario 1 (global DSQ): tasks dispatched to SCX_DSQ_GLOBAL also bypass the BPF scheduler, like the local DSQ; ops.dequeue() is not called, - scenario 2 (user DSQ): tasks dispatched to user DSQs from ops.select_cpu(): tasks enter BPF scheduler's custody with full enqueue/dequeue lifecycle tracking and state machine validation, expects 1:1 enqueue/dequeue pairing, - From ops.enqueue(): - scenario 3 (local DSQ): same behavior as scenario 0, - scenario 4 (global DSQ): same behavior as scenario 1, - scenario 5 (user DSQ): same behavior as scenario 2, - scenario 6 (BPF internal queue): tasks are stored in a BPF queue from ops.enqueue() and consumed from ops.dispatch(); similarly to scenario 5, tasks enter BPF scheduler's custody with full lifecycle tracking and 1:1 enqueue/dequeue validation. This verifies that: - terminal DSQ dispatch (local, global) don't trigger ops.dequeue(), - tasks dispatched to user DSQs, either from ops.select_cpu() or ops.enqueue(), enter BPF scheduler's custody and have exact 1:1 enqueue/dequeue pairing, - tasks stored to internal BPF data structures from ops.enqueue() enter BPF scheduler's custody and have exact 1:1 enqueue/dequeue pairing, - dispatch dequeues have no flags (normal workflow), - property change dequeues have the %SCX_DEQ_SCHED_CHANGE flag set, - no duplicate enqueues or invalid state transitions are happening. Cc: Tejun Heo <tj@kernel.org> Cc: Emil Tsalapatis <emil@etsalapatis.com> Cc: Kuba Piecuch <jpiecuch@google.com> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Signed-off-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23selftests/sched_ext: Remove duplicated unistd.h include in rt_stall.cCheng-Yang Chou
The header <unistd.h> is included twice in rt_stall.c. Remove the redundant inclusion to clean up the code. Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23selftests/sched_ext: Fix unused-result warning for read()Cheng-Yang Chou
The read() call in run_test() triggers a warn_unused_result compiler warning, which breaks the build under -Werror. Check the return value of read() and exit the child process on failure to satisfy the compiler and handle pipe read errors. Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23selftests/sched_ext: Abort test loop on signalCheng-Yang Chou
The runner sets exit_req on SIGINT/SIGTERM but ignores it during the main loop. This prevents users from cleanly interrupting a test run. Check exit_req each iteration to safely break out on exit signals. Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Acked-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-02-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 7.0-rc1Alexei Starovoitov
Cross-merge trees after 7.0-rc1. No conflicts. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-21Merge tag 'sched_ext-for-7.0-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: - Various bug fixes for the example schedulers and selftests * tag 'sched_ext-for-7.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: tools/sched_ext: fix getopt not re-parsed on restart tools/sched_ext: scx_userland: fix data races on shared counters tools/sched_ext: scx_pair: fix stride == 0 crash on single-CPU systems tools/sched_ext: scx_central: fix CPU_SET and skeleton leak on early exit tools/sched_ext: scx_userland: fix stale data on restart tools/sched_ext: scx_flatcg: fix potential stack overflow from VLA in fcg_read_stats selftests/sched_ext: Fix rt_stall flaky failure tools/sched_ext: scx_userland: fix restart and stats thread lifecycle bugs tools/sched_ext: scx_central: fix sched_setaffinity() call with the set size tools/sched_ext: scx_flatcg: zero-initialize stats counter array
generated by cgit v1.2.3 (git 2.39.1) at 2026-07-20 11:03:45 +0000