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2026-05-11selftests/bpf: Add XDP load-balancer benchmark run scriptPuranjay Mohan
Add a convenience script that runs all 24 XDP load-balancer scenarios and formats the results as a table with median, stddev, and p99 columns. ./benchs/run_bench_xdp_lb.sh Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-8-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add XDP load-balancer benchmark driverPuranjay Mohan
Wire up the userspace side of the XDP load-balancer benchmark. 24 scenarios cover the full code-path matrix: TCP/UDP, IPv4/IPv6, cross-AF encap, LRU hit/miss/diverse/cold, consistent-hash bypass, SYN/RST flag handling, and early exits (unknown VIP, non-IP, ICMP, fragments, IP options). Before benchmarking each scenario validates correctness: the output packet is compared byte-for-byte against a pre-built expected packet and BPF map counters are checked against the expected values. Usage: sudo ./bench -a -w3 -p1 xdp-lb --scenario tcp-v4-lru-hit sudo ./bench xdp-lb --list-scenarios Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-7-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add XDP load-balancer BPF programPuranjay Mohan
Add the BPF datapath for the XDP load-balancer benchmark, a simplified L4 load-balancer inspired by katran. The pipeline: L3/L4 parse -> VIP lookup -> per-CPU LRU connection table or consistent-hash fallback -> real server lookup -> per-VIP and per-real stats -> IPIP/IP6IP6 encapsulation. TCP SYN forces the consistent-hash path (skipping LRU); TCP RST skips LRU insert to avoid polluting the table. process_packet() is marked __noinline so that the BENCH_BPF_LOOP reset block (which strips encapsulation) operates on valid packet pointers after bpf_xdp_adjust_head(). Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-6-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add XDP load-balancer common definitionsPuranjay Mohan
Add the shared header for the XDP load-balancer benchmark. This defines the data structures used by both the BPF program and userspace: flow_key, vip_definition, real_definition, and the stats/control structures. Also provides the encapsulation source-address helpers shared between the BPF datapath (for encap) and userspace (for building expected output packets used in validation). Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-5-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add bpf-nop benchmark for timing overhead baselinePuranjay Mohan
Add a minimal benchmark that measures the overhead of the batch-timing infrastructure itself. The BPF program runs an empty BENCH_BPF_LOOP body (~1.5-2 ns/op), establishing the floor cost that all timing-library benchmarks include. [root@virtme-ng tools/testing/selftests/bpf]# sudo ./bench -a -p8 bpf-nop Setting up benchmark 'bpf-nop'... Benchmark 'bpf-nop' started. bpf-nop: median 1.82 ns/op, stddev 0.01, p99 1.86 (1754 samples) Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-4-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add BPF batch-timing libraryPuranjay Mohan
Add a reusable timing library for BPF benchmarks that need to measure BPF program execution time. The BPF side (progs/bench_bpf_timing.bpf.h) provides per-CPU sample arrays and BENCH_BPF_LOOP(), a macro that brackets batch_iters iterations with bpf_ktime_get_ns() reads and records the elapsed time. One extra untimed iteration runs afterward for output validation. The userspace side (benchs/bench_bpf_timing.c) collects samples from the skeleton BSS, computes percentile statistics, and auto-calibrates batch_iters to target ~10 ms per batch. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-3-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add bench_force_done() for early benchmark completionPuranjay Mohan
The bench framework waits for duration_sec to elapse before collecting results. Benchmarks that know exactly how many samples they need can call bench_force_done() to signal completion early, avoiding wasted wall-clock time. Also refactor collect_measurements() to reuse bench_force_done() instead of open-coding the same mutex/cond_signal sequence. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Link: https://lore.kernel.org/r/20260427232313.1582588-2-puranjay@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/bpf: Add test for large offset bpf-to-bpf callYazhou Tang
Add a selftest to verify the verifier and JIT behavior when handling bpf-to-bpf calls with relative jump offsets exceeding the s16 boundary. The test utilizes an inline assembly block with ".rept 32765" to generate a massive dummy subprogram. By placing this padding between the main program and the target subprogram, it forces the verifier to process a bpf-to-bpf call where the imm field exceeds the s16 range. - When JIT is enabled, it asserts that the program is successfully loaded and executes correctly to return the expected value. Since the fix does not change the JIT behavior, the test passes whether the fix is applied or not. - When JIT is disabled, it also asserts that the program is successfully loaded and executes correctly to return the expected value 3. - Before the fix, the verifier rewrites the call instruction with a truncated offset (here 32768 -> -32768) and lets it pass. When the program is executed, the call instruction will go to a wrong target (the landing pad) instead of the intended subprogram, then return -1 and fail. - After the fix, the verifier correctly handles the large offset and allows it to pass. The program then executes correctly to return the expected value 3. Co-developed-by: Tianci Cao <ziye@zju.edu.cn> Signed-off-by: Tianci Cao <ziye@zju.edu.cn> Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com> Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com> Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com> Acked-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/r/20260506094714.419842-4-tangyazhou@zju.edu.cn Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11selftests/namespaces: Skip efault tests when listns() is not availableRicardo B. Marlière
When listns() is not implemented the iterator child detects ENOSYS and exits cleanly with status PIDFD_SKIP before the parent has a chance to signal it. The parent sends SIGKILL (which is a harmless no-op at that point) and then calls waitpid(), obtaining a normal-exit status. The subsequent ASSERT_TRUE(WIFSIGNALED(status)) therefore fails, causing the three EFAULT-focused tests to report FAIL rather than SKIP on kernels that do not yet carry listns() support. After collecting the iterator's exit status, check whether it exited with PIDFD_SKIP and issue a SKIP verdict in that case, consistent with the behaviour of every other listns test that already handles ENOSYS correctly. Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Link: https://patch.msgid.link/20260407-selftests-namespaces_fixes-v1-3-59109909d88b@suse.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-05-11selftests/namespaces: Fix waitpid race in listns_efault_test cleanupRicardo B. Marlière
The efault tests spawn two categories of child processes: namespace children (each in its own mount namespace, for concurrent destruction) and an iterator child that calls listns() in a tight loop. The cleanup loop used waitpid(-1), which reaps any child in any order. If the iterator child exits early (e.g. because listns() returned ENOSYS) before all namespace children have been reaped, waitpid(-1) may consume it instead. The subsequent targeted waitpid(iter_pid) would then block indefinitely. Track the PIDs of the namespace children explicitly and use targeted waitpid() calls in the cleanup loop so the iterator child cannot be inadvertently reaped during namespace cleanup. Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Link: https://patch.msgid.link/20260407-selftests-namespaces_fixes-v1-2-59109909d88b@suse.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-05-11selftests/namespaces: Kill grandchild in nsid fixture teardownRicardo B. Marlière
The timens_separate and pidns_separate test cases fork a grandchild that calls pause(). FIXTURE_TEARDOWN only kills the direct child, which is the init process of the grandchild's namespace. Once the child (init) exits, the grandchild is reparented to the host init but remains alive and continues to hold the inherited write end of the test runner's TAP pipe open. tap_prefix never receives EOF and blocks indefinitely, hanging the entire test collection. Record the grandchild PID in the fixture struct so that teardown can send SIGKILL and reap it before dealing with the child. The grandchild must be reaped first because the child acts as its PID namespace init; killing the child first would kill the grandchild without giving us a chance to waitpid() it. Signed-off-by: Ricardo B. Marlière <rbm@suse.com> Link: https://patch.msgid.link/20260407-selftests-namespaces_fixes-v1-1-59109909d88b@suse.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-05-11selftests/pid_namespace: compute pid_max test limits dynamicallyBjoern Doebel
The pid_max kselftest hardcodes pid_max values of 400 and 500, but the kernel enforces a minimum of PIDS_PER_CPU_MIN * num_possible_cpus(). On machines with many possible CPUs (e.g. nr_cpu_ids=128 yields a minimum of 1024), writing 400 or 500 to /proc/sys/kernel/pid_max returns EINVAL and all three tests fail. Compute these limits the same way as the kernel does and set outer_limit and inner_limit dynamically based on the result. Original test semantics are preserved (outer < inner, nested namespace capped by parent). Signed-off-by: Bjoern Doebel <doebel@amazon.com> Link: https://patch.msgid.link/20260422201151.3830506-1-doebel@amazon.com Reviewed-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com> Assisted-by: Kiro:claude-opus-4.6 Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-05-10Merge branch 'for-7.1-fixes' into for-7.2Tejun Heo
Pull to receive dde2f938d02f ("cgroup/cpuset: move PF_EXITING check before __GFP_HARDWALL in cpuset_current_node_allowed()") as a dependency for an upcoming patch in the same function. Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/cgroup: fix misleading debug message in test_cgfreezer_time_childTao Cui
The debug message says "Expect ctime <= ptime" when the test actually expects ctime > ptime (child's freeze time should exceed parent's, which is zero). Fix the message to match the actual expectation. Signed-off-by: Tao Cui <cuitao@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/cgroup: fix child process escaping to parent cleanup in ↵Tao Cui
test_cpucg_nice In test_cpucg_nice, the forked child process incorrectly jumps to the parent's cleanup label on cg_write failure. This causes the child to attempt cg_destroy on cgroups the parent is still using, and then return to main() to continue executing tests as if it were the parent. Replace goto cleanup with exit(EXIT_FAILURE) in the child process. Signed-off-by: Tao Cui <cuitao@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/cgroup: Add NULL check after malloc in cgroup_util.cHongfu Li
Add NULL checks after malloc() in three helper functions to prevent NULL pointer dereference on memory allocation failure. - cg_name() - cg_name_indexed() - cg_control() These functions allocate memory with malloc() but previously called snprintf() unconditionally, which would trigger undefined behavior if allocation fails. Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/sched_ext: Fix build error in dequeue selftestAndrea Righi
Building the dequeue selftest with newer compilers (e.g., gcc 16) triggers the following error: dequeue.c:28:22: error: variable 'sum' set but not used The 'volatile' qualifier prevents the writes from being optimized away, but does not silence the unused variable 'sum' is indeed only written and never read. Consume 'sum' via an empty asm() with a register input constraint. This forces the compiler to keep the accumulated value (preserving the CPU stress loop) and avoiding the build error. Fixes: 658ad2259b3e ("selftests/sched_ext: Add test to validate ops.dequeue() semantics") Signed-off-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/cgroup: Fix string comparison in write_testHongfu Li
Use string comparison (!=) instead of numeric comparison (-ne) for cpuset values like "0-1". For example: $ [[ "0-1" != "2-3" ]] && echo "true" || echo "false" true $ [[ "0-1" -ne "2-3" ]] && echo "true" || echo "false" false Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10selftests/cgroup: Fix cg_read_strcmp() empty string comparisonHongfu Li
cg_read_strcmp() allocated a buffer sized to strlen(expected) + 1, then passed it to read_text() which calls read(fd, buf, size-1). When comparing against an empty string (""), strlen("") = 0 gives a 1-byte buffer, and read() is asked to read 0 bytes. The file content is never actually read, so strcmp("", buf) always returns 0 regardless of the real content. This caused cg_test_proc_killed() to always report the cgroup as empty immediately, making OOM tests pass without verifying that processes were killed. Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.1-rc3Alexei Starovoitov
Cross-merge BPF and other fixes after downstream PR. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-10selftests: rds: Disarm signal alarm on test completionAllison Henderson
A race in stop_pcaps is possible if the test completes and then times out while waiting for the tcpdump process to exit. The signal handler may fire again and needlessly call stop_pcap a second time. Fix this by disabling the alarm after normal test completion. Also if there are no tcpdump processes to wait on, stop_pcaps can just exit. This avoids misleading prints when there are no procs to collect dumps from. Signed-off-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260507233213.556182-4-achender@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-10selftests: rds: Fix TAP-prefixed prints in check_gcov*Allison Henderson
This patch adds the # prefix to info and warning prints in the check_gcov* routines. Since these routines do not exit, as the other check_* routines do, the output here should be kept TAP compliant. Signed-off-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260507233213.556182-3-achender@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-10selftests: rds: Fix stale log clean upAllison Henderson
Since rds self tests no longer has a default folder, users must specify a log collection folder if they want to collect logs. Currently the log folder is deleted and recreated, but this can be dangerous if the user exports RDS_LOG_DIR=/tmp or /var/log. This patch corrects the clean up to delete only rds log artifacts from the log folder, and further prefixes rds specific logs as rds* Signed-off-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260507233213.556182-2-achender@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-10selftests: net: getsockopt_iter: cleanupBreno Leitao
Apply two cleanups suggested by Stanislav and bobby on the original selftest series: - Reorder local variable declarations into reverse christmas-tree order (longest line first). Because that ordering puts socklen_t optlen before the variable whose size it stores, the "optlen = sizeof(...)" initializer is moved out of the declaration to a plain assignment in the test body, as Stanislav suggested. - Add ASSERT_EQ(optlen, ...) on every error path so the value the kernel writes back to the userspace optlen is pinned down even when the syscall returns -1. With do_sock_getsockopt() now writing opt->optlen back to userspace unconditionally, asserting that the netlink/vsock error paths leave the original input length untouched guards against future regressions. Bobby Eshleman pointed out that SO_VM_SOCKETS_CONNECT_TIMEOUT_NEW/OLD return a sock_timeval-shaped payload (16 bytes on 64-bit), which is wider than the u64 case already covered. Add four tests that exercise this path: - connect_timeout_new_exact exact-size buffer - connect_timeout_new_oversize_clamped oversize buffer, clamped - connect_timeout_new_undersize undersize -> -EINVAL, optlen untouched - connect_timeout_old_exact exact-size buffer for OLD optname Suggested-by: Stanislav Fomichev <sdf@fomichev.me> Suggested-by: Bobby Eshleman <bobbyeshleman@meta.com> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20260507-getsock_two-v2-5-5873111d9c12@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-09Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfLinus Torvalds
Pull bpf fixes from Alexei Starovoitov: - Fix sk_local_storage diag dump via netlink (Amery Hung) - Fix off-by-one in arena direct-value access (Junyoung Jang) - Reject TCP_NODELAY in bpf-tcp congestion control (KaFai Wan) - Fix type confusion in bpf_*_sock() (Kuniyuki Iwashima) - Reject TX-only AF_XDP sockets (Linpu Yu) - Don't run arg-tracking analysis twice on main subprog (Paul Chaignon) - Fix NULL pointer dereference in bpf_sk_storage_clone and fib lookup (Weiming Shi) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf: Fix off-by-one boundary validation in arena direct-value access xskmap: reject TX-only AF_XDP sockets bpf: Don't run arg-tracking analysis twice on main subprog bpf: Free reuseport cBPF prog after RCU grace period. bpf: tcp: Fix type confusion in sol_tcp_sockopt(). bpf: tcp: Fix type confusion in bpf_skc_to_tcp6_sock(). bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock(). mptcp: bpf: Fix type confusion in bpf_mptcp_sock_from_subflow() selftest: bpf: Add test for bpf_tcp_sock() and RAW socket. bpf: tcp: Fix type confusion in bpf_tcp_sock(). tools/headers: Regenerate stddef.h to fix BPF selftests bpf: Fix sk_local_storage diag dumping uninitialized special fields bpf: Fix NULL pointer dereference in bpf_skb_fib_lookup() sockmap: Fix sk_psock_drop() race vs sock_map_{unhash,close,destroy}(). bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths selftests/bpf: Verify bpf-tcp-cc rejects TCP_NODELAY selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks bpf: Reject TCP_NODELAY in bpf-tcp-cc bpf: Reject TCP_NODELAY in TCP header option callbacks
2026-05-08Merge tag 'sched-urgent-2026-05-09' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Ingo Molnar: - Fix spurious failures in rseq self-tests (Mark Brown) - Fix rseq rseq::cpu_id_start ABI regression due to TCMalloc's creative use of the supposedly read-only field The fix is to introduce a new ABI variant based on a new (larger) rseq area registration size, to keep the TCMalloc use of rseq backwards compatible on new kernels (Thomas Gleixner) - Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot) - Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng) * tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix wakeup_preempt_fair() for not waking up task sched/fair: Fix overflow in vruntime_eligible() selftests/rseq: Expand for optimized RSEQ ABI v2 rseq: Reenable performance optimizations conditionally rseq: Implement read only ABI enforcement for optimized RSEQ V2 mode selftests/rseq: Validate legacy behavior selftests/rseq: Make registration flexible for legacy and optimized mode selftests/rseq: Skip tests if time slice extensions are not available rseq: Revert to historical performance killing behaviour rseq: Don't advertise time slice extensions if disabled rseq: Protect rseq_reset() against interrupts rseq: Set rseq::cpu_id_start to 0 on unregistration selftests/rseq: Don't run tests with runner scripts outside of the scripts
2026-05-08selftests: net: Add protodown testsIdo Schimmel
Add a selftest for the protodown mechanism. Five test cases are included: 1. Basic protodown toggling: Verify that setting protodown on macvlan results in DOWN operational state and clearing it restores UP. 2. Same as the previous test case, but with vxlan. 3. Protodown reasons: Verify that protodown cannot be cleared while there are active protodown reasons, but can be cleared once all reasons are removed. 4. Protodown with lower device being toggled: Verify that toggling the lower device's carrier while protodown is on does not cause the macvlan to gain carrier. 5. Protodown with lower device down: Verify that toggling protodown while the lower device has no carrier does not cause the macvlan to gain carrier. Note that the last two test cases fail without "net: Do not turn on carrier when protodown is on" and "net: Do not unconditionally turn on carrier when turning off protodown": # ./protodown.sh TEST: Basic protodown on/off with macvlan [ OK ] TEST: Basic protodown on/off with vxlan [ OK ] TEST: Protodown reasons [ OK ] TEST: Protodown with lower device toggled [FAIL] Macvlan operational state is not DOWN despite protodown TEST: Protodown with lower device down [FAIL] Macvlan is not LOWERLAYERDOWN after clearing protodown Assisted-by: Claude:claude-opus-4-6 Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260507105906.891817-5-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-08selftests: net: add tests for filtered dumps of page poolJakub Kicinski
Add tests for page pool dumps of a specific ifindex. Link: https://patch.msgid.link/20260506034821.1710113-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-08selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.Kuniyuki Iwashima
Let's extend sockopt_sk.c to cover bpf_tcp_sock() for the wrong socket type. Before: # ./test_progs -t sockopt_sk [ 151.948613] ================================================================== [ 151.951376] BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt+0xc7/0x8e0 [ 151.954159] Read of size 8 at addr ffff88801083d760 by task test_progs/1259 ... run_test:FAIL:getsetsockopt unexpected error: -1 (errno 0) #427 sockopt_sk:FAIL After: #427 sockopt_sk:OK While at it, missing free() is fixed up. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20260504210610.180150-3-kuniyu@google.com
2026-05-08selftests/cgroup: Fix incorrect variable check in online_cpus()Hongfu Li
"OFFLINE_CPUS" is a literal string that is always non-empty. It should be "$OFFLINE_CPUS" to check the variable's value instead. Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-08selftests/sched_ext: Fix select_cpu_dfl link leak on early returnCheng-Yang Chou
If run() exits early via SCX_EQ/SCX_ASSERT (which calls return directly), bpf_link__destroy() is never reached and the BPF scheduler stays loaded. All subsequent tests then fail to attach because SCX is not in the DISABLED state. Move bpf_link into a context struct so cleanup() always destroys it, regardless of how run() exits. Also skip waitpid() for children where fork() returned -1, avoiding waitpid(-1,...) accidentally reaping an unrelated child and triggering the early return path. Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andrea Righi <arighi@nvidia.com>
2026-05-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.1-rc3). Conflicts: net/ipv4/igmp.c 726fa7da2d8c ("ipv4: igmp: get rid of IGMPV3_{QQIC,MRC} and simplify calculation") c6bebaa744f7 ("ipv4: igmp: annotate data-races in igmp_heard_query()") https://lore.kernel.org/a7365e4873340f7a5e30411207de3bf9@kernel.org Adjacent changes: net/psp/psp_main.c 30cb24f97d44 ("psp: strip variable-length PSP header in psp_dev_rcv()") c2b22277ad89 ("psp: validate IPv4 header fields in psp_dev_rcv()") net/sched/sch_fq_codel.c f83e07b29246 ("net/sched: sch_fq_codel: annotate data-races from fq_codel_dump_class_stats()") 3f3aa77ff1c8 ("net/sched: add qstats_cpu_drop_inc() helper") net/wireless/pmsr.c 0f3c0a197309 ("wifi: nl80211: fix NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST usage") 410aa47fd9d3 ("wifi: cfg80211: allow suppressing FTM result reporting for PD requests") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-07Merge tag 'net-7.1-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from Netfilter, IPsec, Bluetooth and WiFi. Current release - fix to a fix: - ipmr: add __rcu to netns_ipv4.mrt, make sure we hold the RCU lock in all relevant places Current release - new code bugs: - fixes for the recently added resizable hash tables - ipv6: make sure we default IPv6 tunnel drivers to =m now that IPv6 itself is built in - drv: octeontx2-af: fixes for parser/CAM fixes Previous releases - regressions: - phy: micrel: fix LAN8814 QSGMII soft reset - wifi: - cw1200: revert "Fix locking in error paths" - ath12k: fix crash on WCN7850, due to adding the same queue buffer to a list multiple times Previous releases - always broken: - number of info leak fixes - ipv6: implement limits on extension header parsing - wifi: number of fixes for missing bound checks in the drivers - Bluetooth: fixes for races and locking issues - af_unix: - fix an issue between garbage collection and PEEK - fix yet another issue with OOB data - xfrm: esp: avoid in-place decrypt on shared skb frags - netfilter: replace skb_try_make_writable() by skb_ensure_writable() - openvswitch: vport: fix race between tunnel creation and linking leading to invalid memory accesses (type confusion) - drv: amd-xgbe: fix PTP addend overflow causing frozen clock Misc: - sched/isolation: make HK_TYPE_KTHREAD an alias of HK_TYPE_DOMAIN (for relevant IPVS change)" * tag 'net-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (190 commits) net: sparx5: configure serdes for 1000BASE-X in sparx5_port_init() net: sparx5: fix wrong chip ids for TSN SKUs net: stmmac: dwmac-nuvoton: fix NULL pointer dereference in nvt_set_phy_intf_sel() tcp: Fix dst leak in tcp_v6_connect(). ipmr: Call ipmr_fib_lookup() under RCU. net: phy: broadcom: Save PHY counters during suspend net/smc: fix missing sk_err when TCP handshake fails af_unix: Reject SIOCATMARK on non-stream sockets veth: fix OOB txq access in veth_poll() with asymmetric queue counts eth: fbnic: fix double-free of PCS on phylink creation failure net: ethernet: cortina: Drop half-assembled SKB selftests: mptcp: pm: restrict 'unknown' check to pm_nl_ctl selftests: mptcp: check output: catch cmd errors mptcp: pm: prio: skip closed subflows mptcp: pm: ADD_ADDR rtx: return early if no retrans mptcp: pm: ADD_ADDR rtx: skip inactive subflows mptcp: pm: ADD_ADDR rtx: resched blocked ADD_ADDR quicker mptcp: pm: ADD_ADDR rtx: free sk if last mptcp: pm: ADD_ADDR rtx: always decrease sk refcount mptcp: pm: ADD_ADDR rtx: fix potential data-race ...
2026-05-07crypto: drbg - Fold include/crypto/drbg.h into crypto/drbg.cEric Biggers
include/crypto/drbg.h no longer contains anything that is used externally to crypto/drbg.c. Therefore, fold it into crypto/drbg.c. Signed-off-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2026-05-06selftests: mptcp: pm: restrict 'unknown' check to pm_nl_ctlMatthieu Baerts (NGI0)
When pm_netlink.sh is executed with '-i', 'ip mptcp' is used instead of 'pm_nl_ctl'. IPRoute2 doesn't support the 'unknown' flag, which has only been added to 'pm_nl_ctl' for this specific check: to ensure that the kernel ignores such unsupported flag. No reason to add this flag to 'ip mptcp'. Then, this check should be skipped when 'ip mptcp' is used. Fixes: 0cef6fcac24d ("selftests: mptcp: ip_mptcp option for more scripts") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-11-fca8091060a4@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06selftests: mptcp: check output: catch cmd errorsMatthieu Baerts (NGI0)
Using '${?}' inside the if-statement to check the returned value from the command that was evaluated as part of the if-statement is not correct: here, '${?}' will be linked to the previous instruction, not the one that is expected here (${cmd}). Instead, simply mark the error, except if an error is expected. If that's the case, 1 can be passed as the 4th argument of this helper. Three checks from pm_netlink.sh expect an error. While at it, improve the error message when the command unexpectedly fails or succeeds. Note that we could expect a specific returned value, but the checks currently expecting an error can be used with 'ip mptcp' or 'pm_nl_ctl', and these two tools don't return the same error code. Fixes: 2d0c1d27ea4e ("selftests: mptcp: add mptcp_lib_check_output helper") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-10-fca8091060a4@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06selftests: drv-net: fix sort order of makefile and configJakub Kicinski
Recent changes added configs and tests in the wrong spot. Link: https://lore.kernel.org/20260506170435.34984dfc@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06Merge tag 'ipsec-2026-05-05' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2026-05-05 1. Fix an IPv6 encapsulation error path that leaked route references when UDPv6 ESP decapsulation resolved to an error route. From Yilin Zhu. 2. Fix AH with ESN on async crypto paths by accounting for the extra high-order sequence number when reconstructing the temporary authentication layout in the completion callbacks. From Michael Bomarito. 3. Fix XFRM output so it does not overwrite already-correct inner header pointers when a tunnel layer such as VXLAN has already saved them. The fix comes with new selftests. From Cosmin Ratiu. 4. Add the missing native payload size entry for XFRM_MSG_MAPPING in the compat translation path. From Ruijie Li. 5. Harden __xfrm_state_delete() against repeated or inconsistent unhashing of state list nodes by keying the removal on actual list membership and using delete-and-init helpers. From Michal Kosiorek. 6. Prevent ESP from decrypting shared splice-backed skb fragments in place by marking UDP splice frags as shared and forcing copy-on-write in ESP input when needed. From Kuan-Ting Chen. * tag 'ipsec-2026-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: xfrm: esp: avoid in-place decrypt on shared skb frags xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete xfrm: provide message size for XFRM_MSG_MAPPING xfrm: Don't clobber inner headers when already set tools/selftests: Add a VXLAN+IPsec traffic test tools/selftests: Use a sensible timeout value for iperf3 client xfrm: ah: account for ESN high bits in async callbacks ipv6: xfrm6: release dst on error in xfrm6_rcv_encap() ==================== Link: https://patch.msgid.link/20260505132326.1362733-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06Merge tag 'ovpn-net-20260504' of https://github.com/OpenVPN/ovpn-net-nextJakub Kicinski
Antonio Quartulli says: ==================== Includes changes: * ensure MAC header offset is reset before delivering packet * ensure gro_cells_receive() and dstats_dev_add() are called with BH disabled * reduce ping count in selftest to ensure it completes within timeout * tag 'ovpn-net-20260504' of https://github.com/OpenVPN/ovpn-net-next: selftests: ovpn: reduce ping count in test.sh ovpn: ensure packet delivery happens with BH disabled ovpn: reset MAC header before passing skb up ==================== Link: https://patch.msgid.link/20260504230305.2681646-1-antonio@openvpn.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-06KVM: selftests: arm64: Fix steal_time test after UAPI refactoringSebastian Ott
Fix the following failure to the steal_time test on arm64 by making the timer address known to the guest. ==== Test Assertion Failure ==== steal_time.c:229: !ret pid=18514 tid=18514 errno=22 - Invalid argument 1 0x000000000040252f: check_steal_time_uapi at steal_time.c:229 (discriminator 20) 2 (inlined by) main at steal_time.c:537 (discriminator 20) 3 0x0000ffffa23d621b: ?? ??:0 4 0x0000ffffa23d62fb: ?? ??:0 5 0x0000000000402b6f: _start at ??:? KVM_SET_DEVICE_ATTR failed, rc: -1 errno: 22 (Invalid argument) Fixes: 40351ed924dd ("KVM: selftests: Refactor UAPI tests into dedicated function") Signed-off-by: Sebastian Ott <sebott@redhat.com> Link: https://patch.msgid.link/20260504112808.21276-1-sebott@redhat.com Signed-off-by: Marc Zyngier <maz@kernel.org>
2026-05-06selftests/rseq: Expand for optimized RSEQ ABI v2Thomas Gleixner
Update the selftests so they are executed for legacy (32 bytes RSEQ region) and optimized RSEQ ABI v2 mode. Fixes: d6200245c75e ("rseq: Allow registering RSEQ with slice extension") Signed-off-by: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Link: https://patch.msgid.link/20260428224428.009121296%40kernel.org Cc: stable@vger.kernel.org
2026-05-06selftests/rseq: Validate legacy behaviorThomas Gleixner
The RSEQ legacy mode behavior requires that the ID fields in the rseq region are unconditionally updated on every context switch and before signal delivery even if not required by the ABI specification. To ensure that this behavior is preserved for legacy users in the future, add a test which validates that with a sleep() and a signal sent to self. Provide a run script which prevents GLIBC from registering a RSEQ region, so that the test can register it's own legacy sized region. Fixes: 566d8015f7ee ("rseq: Avoid CPU/MM CID updates when no event pending") Signed-off-by: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Link: https://patch.msgid.link/20260428224427.764705536%40kernel.org Cc: stable@vger.kernel.org
2026-05-06selftests: livepatch: Check if stack_order sysfs attribute existsMarcos Paulo de Souza
The commit 3dae09de4061 ("livepatch: Add stack_order sysfs attribute"), merged in v6.14, introduced a new sysfs attribute. In order to run the selftests on older kernels, check if given kernel has support for the attribute. If the attribute is not supported, skip the checks. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-6-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests: livepatch: Check if replace sysfs attribute existsMarcos Paulo de Souza
The commit adb68ed26a3e ("livepatch: Add "replace" sysfs attribute"), merged in v6.11, introduced a new sysfs attribute. In order to run the selftests on older kernels, check if given kernel has support for the attribute. If the attribute is not supported, skip the checks. While at it, create a local variable to hold the module name to be tested, instead of overwriting MOD_LIVEPATCH. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-5-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests: livepatch: Check if patched sysfs attribute existsMarcos Paulo de Souza
The commit bb26cfd9e77e ("livepatch: add sysfs entry "patched" for each klp_object") was merged in v6.1, introducing a new sysfs attribute. In order to run the selftests on older kernels, check if given kernel has support for the attribute. If the attribute is not supported, skip the checks. Along with this change, use MOD_LIVEPATCH2 variable instead of reassigning a new value to MOD_LIVEPATCH, and also use the variable names in the check_result, to avoid using the module names. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-4-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests: livepatch: Introduce does_sysfs_exist functionMarcos Paulo de Souza
Returns true if the livepatch sysfs attribute exists, and false otherwise. This new function will be used in the next patches. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-3-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests: livepatch: Replace true/false module parameter by y/nMarcos Paulo de Souza
Older kernels don't support true/false for boolean module parameters because they lack commit 0d6ea3ac94ca ("lib/kstrtox.c: add "false"/"true" support to kstrtobool()"). Replace true/false by y/n so the test module can be loaded on older kernels. No functional changes. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-2-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests: livepatch: Check for ARCH_HAS_SYSCALL_WRAPPER configMarcos Paulo de Souza
Older kernels that lack CONFIG_ARCH_HAS_SYSCALL_WRAPPER config don't have any prefixes for their syscalls. The same applies to current powerpc and loongarch, covering all currently supported architectures that support livepatch. The other supported architectures have specific prefixes, so error out when a new architecture adds livepatch support with wrappers but didn't update the test to include it. Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Link: https://patch.msgid.link/20260504-lp-tests-old-fixes-v5-1-0be26d94ab9a@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com>
2026-05-06selftests/posix_timers: Use CLOCK_THREAD_CPUTIME_ID for ITIMER_PROF measurementsJohn Stultz
It was reported that the posix_timers test was at times seeing failures with ITIMER_PROF timers, specifically in cases where the RCU_SOFTIRQ was taking up significant amounts of time. Analysis showed that as the time in softirq isn't included in the task stime + utime accounting used to trigger the SIGPROF so delays from softirq work could cause it to appear that the signal was incorrectly delayed. Contributing to this is that the test uses gettimeofday() to measure itimers, which also means any scheduling delay can also cause failures (as the task may not be running the entire time). To fix this, convert all the itimer measurements to use clock_gettime(), tweaking the logic to use nsecs instead of usecs. Then for ITIMER_PROF timers, utilize the CLOCK_THREAD_CPUTIME_ID clockid so that it is similarly measuring the time the task was running. Signed-off-by: John Stultz <jstultz@google.com> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260428173957.1394265-1-jstultz@google.com
2026-05-05selftests: rds: Make rds selftests TAP compliantAllison Henderson
This patch updates the rds selftests output to be TAP compliant. Use ksft_pr() to mark debug output with a leading '# ' so that TAP parsers treat it as commentary, and convert all informational print() calls to use ksft_pr(). sys.exit(0) is changed to os._exit(0) to avoid duplicate prints from the buffered TAP output. The console output from the tcpdump subprocess is silenced, and the gcov console output is redirected to a gcovr.log. Finally adjust the exit path so that the hash check loop sets a return code instead exiting directly. Then print the TAP results and totals lines before exiting. Signed-off-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260504054143.4027538-11-achender@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2026-09-16 22:56:31 +0000