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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037de0de1sm3745449366b.40.2025.12.30.10.58.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Dec 2025 10:58:55 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , stable@dpdk.org, vattunuru@marvell.com, Nithin Dabilpuram , Kiran Kumar K , Sunil Kumar Kori , Satha Rao , Harman Kalra , Jerin Jacob Subject: [PATCH v2 6/7] common/cnxk: fix array out of bounds Date: Tue, 30 Dec 2025 10:55:14 -0800 Message-ID: <20251230185837.301163-7-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251230185837.301163-1-stephen@networkplumber.org> References: <20251228184300.541639-1-stephen@networkplumber.org> <20251230185837.301163-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Gcc-16 detects out of bounds reference in this code. In function ‘nix_inl_selftest_work_cb’, inlined from ‘inl_outb_soft_exp_poll’ at ../drivers/common/cnxk/roc_nix_inl_dev.c:1173:4, inlined from ‘nix_inl_outb_poll_thread’ at ../drivers/common/cnxk/roc_nix_inl_dev.c:1201:6: ../drivers/common/cnxk/roc_nix_inl_dev.c:43:19: warning: array subscript 1 is outside array bounds of ‘uint64_t[1]’ {aka ‘long unsigned int[1]’} [-Warray-bounds=] 43 | uintptr_t work = gw[1]; | ^~~~ ../drivers/common/cnxk/roc_nix_inl_dev.c: In function ‘nix_inl_outb_poll_thread’: ../drivers/common/cnxk/roc_nix_inl_dev.c:1172:34: note: at offset 8 into object ‘tmp’ of size 8 1172 | uint64_t tmp = ~(uint32_t)0x0; | ^~~ Fixes: bea5d990a93b ("net/cnxk: support outbound soft expiry notification") Cc: stable@dpdk.org Cc: vattunuru@marvell.com Signed-off-by: Stephen Hemminger --- drivers/common/cnxk/roc_nix_inl_dev.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/common/cnxk/roc_nix_inl_dev.c b/drivers/common/cnxk/roc_nix_inl_dev.c index 1eb96f913a..3a4f1ac1e7 100644 --- a/drivers/common/cnxk/roc_nix_inl_dev.c +++ b/drivers/common/cnxk/roc_nix_inl_dev.c @@ -1169,12 +1169,10 @@ inl_outb_soft_exp_poll(struct nix_inl_dev *inl_dev, uint32_t ring_idx) (entry.s.data0 << 7)); if (sa != NULL) { - uint64_t tmp = ~(uint32_t)0x0; - inl_dev->work_cb(&tmp, sa, NIX_INL_SOFT_EXPIRY_THRD, NULL, port_id); - __atomic_store_n(ring_base + tail_l + 1, 0ULL, - __ATOMIC_RELAXED); - __atomic_fetch_add((uint32_t *)ring_base, 1, - __ATOMIC_ACQ_REL); + uint64_t tmp[2]; + inl_dev->work_cb(tmp, sa, NIX_INL_SOFT_EXPIRY_THRD, NULL, port_id); + __atomic_store_n(ring_base + tail_l + 1, 0ULL, __ATOMIC_RELAXED); + __atomic_fetch_add((uint32_t *)ring_base, 1, __ATOMIC_ACQ_REL); } else plt_err("Invalid SA"); -- 2.51.0