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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435b1f7b41asm3603771f8f.39.2026.01.22.20.30.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Jan 2026 20:30:20 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , Bruce Richardson Subject: [PATCH v11 13/18] eal: check tailq length Date: Thu, 22 Jan 2026 20:28:11 -0800 Message-ID: <20260123042945.159075-14-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260123042945.159075-1-stephen@networkplumber.org> References: <20251202172626.283094-1-stephen@networkplumber.org> <20260123042945.159075-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The tailq name should not be allowed to exceed limits. Signed-off-by: Stephen Hemminger Acked-by: Bruce Richardson --- doc/guides/rel_notes/release_26_03.rst | 1 + lib/eal/common/eal_common_tailqs.c | 13 ++++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/doc/guides/rel_notes/release_26_03.rst b/doc/guides/rel_notes/release_26_03.rst index 91b1808455..d643206167 100644 --- a/doc/guides/rel_notes/release_26_03.rst +++ b/doc/guides/rel_notes/release_26_03.rst @@ -93,6 +93,7 @@ API Changes * lpm: name must be less than RTE_LPM_NAMESIZE. * hash: name parameter must be less than RTE_HASH_NAMESIZE. * efd: name must be less than RTE_EFD_NAMESIZE. + * tailq: name must be less than RTE_TAILQ_NAMESIZE. ABI Changes diff --git a/lib/eal/common/eal_common_tailqs.c b/lib/eal/common/eal_common_tailqs.c index 47080d75ac..c581f43b6f 100644 --- a/lib/eal/common/eal_common_tailqs.c +++ b/lib/eal/common/eal_common_tailqs.c @@ -8,6 +8,7 @@ #include #include +#include #include #include @@ -30,8 +31,10 @@ rte_eal_tailq_lookup(const char *name) unsigned i; struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config; - if (name == NULL) + if (name == NULL) { + rte_errno = EINVAL; return NULL; + } for (i = 0; i < RTE_MAX_TAILQ; i++) { if (!strncmp(name, mcfg->tailq_head[i].name, @@ -39,6 +42,7 @@ rte_eal_tailq_lookup(const char *name) return &mcfg->tailq_head[i]; } + rte_errno = ENOENT; return NULL; } @@ -67,6 +71,12 @@ rte_eal_tailq_create(const char *name) { struct rte_tailq_head *head = NULL; + if (strlen(name) >= sizeof(head->name)) { + EAL_LOG(ERR, "tailq name '%s' is too long", name); + rte_errno = ENAMETOOLONG; + return NULL; + } + if (!rte_eal_tailq_lookup(name) && (rte_tailqs_count + 1 < RTE_MAX_TAILQ)) { struct rte_mem_config *mcfg; @@ -115,6 +125,7 @@ rte_eal_tailq_register(struct rte_tailq_elem *t) if (rte_eal_tailq_local_register(t) < 0) { EAL_LOG(ERR, "%s tailq is already registered", t->name); + rte_errno = EEXIST; goto error; } -- 2.51.0