{"id":2220603,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2220603/?format=json","web_url":"http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260407163121.480871-3-vinicius.peixoto@canonical.com/","project":{"id":15,"url":"http://patchwork.ozlabs.org/api/1.1/projects/15/?format=json","name":"Ubuntu Kernel","link_name":"ubuntu-kernel","list_id":"kernel-team.lists.ubuntu.com","list_email":"kernel-team@lists.ubuntu.com","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260407163121.480871-3-vinicius.peixoto@canonical.com>","date":"2026-04-07T16:31:21","name":"[SRU,Q:linux-azure,v2,1/1] net: hv_netvsc: reject RSS hash key programming without RX indirection table","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"ed74f7365dd1f4059e43b77336548e82871fd027","submitter":{"id":88880,"url":"http://patchwork.ozlabs.org/api/1.1/people/88880/?format=json","name":"Vinicius Peixoto","email":"vinicius.peixoto@canonical.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260407163121.480871-3-vinicius.peixoto@canonical.com/mbox/","series":[{"id":499001,"url":"http://patchwork.ozlabs.org/api/1.1/series/499001/?format=json","web_url":"http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=499001","date":"2026-04-07T16:31:21","name":"azure: backport \"net: hv_netvsc: reject RSS hash key programming without RX indirection table\"","version":2,"mbox":"http://patchwork.ozlabs.org/series/499001/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2220603/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220603/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=f4YQdh0a;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"kernel-team-bounces@lists.ubuntu.com","Sender":"\"kernel-team\" "},"content":"From: Aditya Garg \n\nBugLink: https://bugs.launchpad.net/bugs/2142703\n\nRSS configuration requires a valid RX indirection table. When the device\nreports a single receive queue, rndis_filter_device_add() does not\nallocate an indirection table, accepting RSS hash key updates in this\nstate leads to a hang.\n\nFix this by gating netvsc_set_rxfh() on ndc->rx_table_sz and return\n-EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device\ncapabilities and prevents incorrect behavior.\n\nFixes: 962f3fee83a4 (\"netvsc: add ethtool ops to get/set RSS key\")\nSigned-off-by: Aditya Garg \nReviewed-by: Dipayaan Roy \nReviewed-by: Haiyang Zhang \nLink: https://patch.msgid.link/1768212093-1594-1-git-send-email-gargaditya@linux.microsoft.com\nSigned-off-by: Jakub Kicinski \n(cherry picked from commit d23564955811da493f34412d7de60fa268c8cb50)\nSigned-off-by: Vinicius Peixoto \n---\n drivers/net/hyperv/netvsc_drv.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c\nindex 39c892e46cb0..25a358524a09 100644\n--- a/drivers/net/hyperv/netvsc_drv.c\n+++ b/drivers/net/hyperv/netvsc_drv.c\n@@ -1757,6 +1757,9 @@ static int netvsc_set_rxfh(struct net_device *dev,\n \t rxfh->hfunc != ETH_RSS_HASH_TOP)\n \t\treturn -EOPNOTSUPP;\n \n+\tif (!ndc->rx_table_sz)\n+\t\treturn -EOPNOTSUPP;\n+\n \trndis_dev = ndev->extension;\n \tif (rxfh->indir) {\n \t\tfor (i = 0; i < ndc->rx_table_sz; i++)\n","prefixes":["SRU","Q:linux-azure","v2","1/1"]}