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GET /api/patches/2221978/?format=api
{ "id": 2221978, "url": "http://patchwork.ozlabs.org/api/patches/2221978/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260410141251.283232-1-m.dmitrichenko222@gmail.com/", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/projects/47/?format=api", "name": "Open vSwitch", "link_name": "openvswitch", "list_id": "ovs-dev.openvswitch.org", "list_email": "ovs-dev@openvswitch.org", "web_url": "http://openvswitch.org/", "scm_url": "git@github.com:openvswitch/ovs.git", "webscm_url": "https://github.com/openvswitch/ovs", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260410141251.283232-1-m.dmitrichenko222@gmail.com>", "list_archive_url": null, "date": "2026-04-10T14:12:51", "name": "[ovs-dev,v2] netdev-dpdk: Fix possible memory leak when configuring rx-steering", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "ffda510663505d1fc77b72d42c1678e41985bf00", "submitter": { "id": 93057, "url": "http://patchwork.ozlabs.org/api/people/93057/?format=api", "name": "Mikhail Dmitrichenko", "email": "m.dmitrichenko222@gmail.com" }, "delegate": { "id": 81893, "url": "http://patchwork.ozlabs.org/api/users/81893/?format=api", "username": "ktraynor", "first_name": "Kevin", "last_name": "Traynor", "email": "ktraynor@redhat.com" }, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20260410141251.283232-1-m.dmitrichenko222@gmail.com/mbox/", "series": [ { "id": 499467, "url": "http://patchwork.ozlabs.org/api/series/499467/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=499467", "date": "2026-04-10T14:12:51", "name": "[ovs-dev,v2] netdev-dpdk: Fix possible memory leak when configuring rx-steering", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499467/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221978/comments/", "check": "warning", "checks": "http://patchwork.ozlabs.org/api/patches/2221978/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ovs-dev@lists.linuxfoundation.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=decuVXdO;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=140.211.166.138; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ovs-dev-bounces@openvswitch.org", "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>" }, "content": "VLOG_WARN_BUF() allocates a new string with xasprintf() every time it is\ncalled and overwrites *errp without freeing the previous value. This can\nlead to a memory leak if multiple warnings are emitted or if a later\nhard error in netdev_dpdk_set_config() also writes\nto errp.\n\nThe three cases in dpdk_set_rx_steer_config() are not fatal errors:\n- unsupported rx-steering value\n- rss+lacp on non-ethernet port\n- rss+lacp together with hw-offload\n\nIn all cases program simply log a warning and fall back to default RSS\nsteering. Configuration continues normally (err remains 0 and execution\nflow do not goto out).\n\nTherefore change them to plain VLOG_WARN(). As a result the 'errp'\nparameter becomes unused and is removed from the function signature and\nthe call site in netdev_dpdk_set_config().\n\nThis makes the code cleaner and consistent with the rest of netdev-dpdk.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\nFixes: fc06ea9a1883 (\"netdev-dpdk: Add custom rx-steering configuration.\")\nSigned-off-by: Mikhail Dmitrichenko <m.dmitrichenko222@gmail.com>\n---\n lib/netdev-dpdk.c | 19 ++++++++-----------\n 1 file changed, 8 insertions(+), 11 deletions(-)", "diff": "diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c\nindex 54959ff0d..e75b9ad55 100644\n--- a/lib/netdev-dpdk.c\n+++ b/lib/netdev-dpdk.c\n@@ -2251,7 +2251,7 @@ dpdk_process_queue_size(struct netdev *netdev, const struct smap *args,\n \n static void\n dpdk_set_rx_steer_config(struct netdev *netdev, struct netdev_dpdk *dev,\n- const struct smap *args, char **errp)\n+ const struct smap *args)\n {\n const char *arg = smap_get_def(args, \"rx-steering\", \"rss\");\n uint64_t flags = 0;\n@@ -2259,22 +2259,19 @@ dpdk_set_rx_steer_config(struct netdev *netdev, struct netdev_dpdk *dev,\n if (!strcmp(arg, \"rss+lacp\")) {\n flags = DPDK_RX_STEER_LACP;\n } else if (strcmp(arg, \"rss\")) {\n- VLOG_WARN_BUF(errp, \"%s: options:rx-steering \"\n- \"unsupported parameter value '%s'\",\n- netdev_get_name(netdev), arg);\n+ VLOG_WARN(\"%s: options:rx-steering unsupported parameter value '%s'\",\n+ netdev_get_name(netdev), arg);\n }\n \n if (flags && dev->type != DPDK_DEV_ETH) {\n- VLOG_WARN_BUF(errp, \"%s: options:rx-steering \"\n- \"is only supported on ethernet ports\",\n- netdev_get_name(netdev));\n+ VLOG_WARN(\"%s: options:rx-steering is only supported on ethernet ports\",\n+ netdev_get_name(netdev));\n flags = 0;\n }\n \n if (flags && dpif_offload_enabled()) {\n- VLOG_WARN_BUF(errp, \"%s: options:rx-steering \"\n- \"is incompatible with hw-offload\",\n- netdev_get_name(netdev));\n+ VLOG_WARN(\"%s: options:rx-steering is incompatible with hw-offload\",\n+ netdev_get_name(netdev));\n flags = 0;\n }\n \n@@ -2304,7 +2301,7 @@ netdev_dpdk_set_config(struct netdev *netdev, const struct smap *args,\n ovs_mutex_lock(&dpdk_mutex);\n ovs_mutex_lock(&dev->mutex);\n \n- dpdk_set_rx_steer_config(netdev, dev, args, errp);\n+ dpdk_set_rx_steer_config(netdev, dev, args);\n \n dpdk_set_rxq_config(dev, args);\n \n", "prefixes": [ "ovs-dev", "v2" ] }