en Copyright 2015 Java http://kernelsources.org:8080/source/history/linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c#0fc8f6200d2313278fbf4539bbab74677c685531 Merge drm/drm-fixes into drm-misc-fixesGetting fixes and updates from v7.1-rc1.Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> List of files: /linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c Mon, 27 Apr 2026 10:26:49 +0200 Thomas Zimmermann <tzimmermann@suse.de> http://kernelsources.org:8080/source/history/linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c#f5ad4101009e7f5f5984ffea6923d4fcd470932a Merge tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextPull bpf updates from Alexei Starovoitov: - Welcome new BPF maintainers: Kumar Kartikeya Dwivedi, Eduard Zingerman while Martin KaFai Lau reduced his load to Reviwer. - Lots of fixes everywhere from many first time contributors. Thank you All. - Diff stat is dominated by mechanical split of verifier.c into multiple components: - backtrack.c: backtracking logic and jump history - states.c: state equivalence - cfg.c: control flow graph, postorder, strongly connected components - liveness.c: register and stack liveness - fixups.c: post-verification passes: instruction patching, dead code removal, bpf_loop inlining, finalize fastcall 8k line were moved. verifier.c still stands at 20k lines. Further refactoring is planned for the next release. - Replace dynamic stack liveness with static stack liveness based on data flow analysis. This improved the verification time by 2x for some programs and equally reduced memory consumption. New logic is in liveness.c and supported by constant folding in const_fold.c (Eduard Zingerman, Alexei Starovoitov) - Introduce BTF layout to ease addition of new BTF kinds (Alan Maguire) - Use kmalloc_nolock() universally in BPF local storage (Amery Hung) - Fix several bugs in linked registers delta tracking (Daniel Borkmann) - Improve verifier support of arena pointers (Emil Tsalapatis) - Improve verifier tracking of register bounds in min/max and tnum domains (Harishankar Vishwanathan, Paul Chaignon, Hao Sun) - Further extend support for implicit arguments in the verifier (Ihor Solodrai) - Add support for nop,nop5 instruction combo for USDT probes in libbpf (Jiri Olsa) - Support merging multiple module BTFs (Josef Bacik) - Extend applicability of bpf_kptr_xchg (Kaitao Cheng) - Retire rcu_trace_implies_rcu_gp() (Kumar Kartikeya Dwivedi) - Support variable offset context access for 'syscall' programs (Kumar Kartikeya Dwivedi) - Migrate bpf_task_work and dynptr to kmalloc_nolock() (Mykyta Yatsenko) - Fix UAF in in open-coded task_vma iterator (Puranjay Mohan)* tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (241 commits) selftests/bpf: cover short IPv4/IPv6 inputs with adjust_room bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb selftests/bpf: Use memfd_create instead of shm_open in cgroup_iter_memcg selftests/bpf: Add test for cgroup storage OOB read bpf: Fix OOB in pcpu_init_value selftests/bpf: Fix reg_bounds to match new tnum-based refinement selftests/bpf: Add tests for non-arena/arena operations bpf: Allow instructions with arena source and non-arena dest registers bpftool: add missing fsession to the usage and docs of bpftool docs/bpf: add missing fsession attach type to docs bpf: add missing fsession to the verifier log bpf: Move BTF checking logic into check_btf.c bpf: Move backtracking logic to backtrack.c bpf: Move state equivalence logic to states.c bpf: Move check_cfg() into cfg.c bpf: Move compute_insn_live_regs() into liveness.c bpf: Move fixup/post-processing logic from verifier.c into fixups.c bpf: Simplify do_check_insn() bpf: Move checks for reserved fields out of the main pass bpf: Delete unused variable ... List of files: /linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c Wed, 15 Apr 2026 03:04:04 +0200 Linus Torvalds <torvalds@linux-foundation.org> http://kernelsources.org:8080/source/history/linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c#b43d574c00324f26732260b378fb473e024e9a21 selftests/bpf: Add test for struct_ops __ref argument in any positionAdd a selftest to verify that the verifier correctly identifies refcountedarguments in struct_ops programs, even when they are not the firstargument. This ensures that the restriction on tail calls for programswith __ref arguments is properly enforced regardless of which argumentthey appear in.This test verifies the fix for check_struct_ops_btf_id() proposed byKeisuke Nishimura [0], which corrected a bug where only the firstargument was checked for the refcounted flag.The test includes:- An update to bpf_testmod to add 'test_refcounted_multi', an operator with three arguments where the third is tagged with "__ref".- A BPF program 'test_refcounted_multi' that attempts a tail call.- A test runner that asserts the verifier rejects the program with "program with __ref argument cannot tail call".[0]: https://lore.kernel.org/bpf/20260320130219.63711-1-keisuke.nishimura@inria.fr/Signed-off-by: Varun R Mallya <varunrmallya@gmail.com>Link: https://lore.kernel.org/r/20260321214038.80479-1-varunrmallya@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org> List of files: /linux/tools/testing/selftests/bpf/progs/struct_ops_multi_args.c Sat, 21 Mar 2026 22:40:38 +0100 Varun R Mallya <varunrmallya@gmail.com>