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[69.172.153.146]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a06cb7159fsm1774824a91.4.2026.09.22.10.20.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 10:20:31 -0700 (PDT) From: Emil Tsalapatis To: bpf@vger.kernel.org Cc: ast@kernel.org, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, daniel@iogearbox.net, netdev@vger.kernel.org, Emil Tsalapatis Subject: [PATCH bpf v2 00/11] skb/arena bugfixes Date: Tue, 22 Sep 2026 17:20:17 +0000 Message-ID: <20260922172028.6269-1-emil@etsalapatis.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Set of verifier-focused bugfixes related to dynptrs, SKB management in BPF, and dynptrs. Signed-off-by: Emil Tsalapatis v1 -> v2 (https://lore.kernel.org/bpf/20260916050830.8774-1-emil@etsalapatis.com/) - (01/11) Adjust typecasting to just be unsigned int (Jakub) - (09/11) Test for the new field in stacksafe when comparing registers (bot-ci) - (01/11, 03/11) Added Reviewed-by by Jiayuan Emil Tsalapatis (11): bpf: Fix bounds check for skb-backed dynptrs selftests/bpf: Test dynptr slices past end of skb bpf: Fix bpf_sock context code generation selftests/bpf: Add selftests for rx_queue_mapping context access bpf: Reject pkt arguments in mutating subprogs selftests/bpf: Test rejection of pkt args to mutating subprogs bpf: Prevent variable arena/non-arena register contents selftests/bpf: Test for mixed arena/nonarena code paths bpf: Track whether dynptr type is known bpf: Track skb memory invalidation by packet-backed dynptrs selftests/bpf: Test dynptr slice invalidation on skb clobber include/linux/bpf_verifier.h | 5 + include/linux/skbuff.h | 5 +- kernel/bpf/cfg.c | 10 +- kernel/bpf/states.c | 1 + kernel/bpf/verifier.c | 112 +++++++++-- net/core/filter.c | 7 +- .../testing/selftests/bpf/prog_tests/dynptr.c | 10 + .../testing/selftests/bpf/progs/dynptr_fail.c | 183 ++++++++++++++++++ .../selftests/bpf/progs/dynptr_success.c | 20 ++ .../selftests/bpf/progs/verifier_arena.c | 49 +++++ .../bpf/progs/verifier_global_ptr_args.c | 53 +++++ .../selftests/bpf/progs/verifier_sock.c | 38 ++++ 12 files changed, 475 insertions(+), 18 deletions(-) -- 2.54.0