From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5837228E1 for ; Sun, 27 Nov 2022 12:08:24 +0000 (UTC) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1ozGSM-0000zd-9H; Sun, 27 Nov 2022 13:08:22 +0100 Message-ID: <06fcec0d-c8aa-d181-441b-695afe6a4e18@leemhuis.info> Date: Sun, 27 Nov 2022 13:08:21 +0100 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: RTM_DELROUTE not sent anymore when deleting (last) nexthop of routes in 6.1 #forregzbot Content-Language: en-US, de-DE From: Thorsten Leemhuis To: Network Development Cc: "regressions@lists.linux.dev" References: <7206722a-f97e-5222-bea6-e327b22e4b5b@leemhuis.info> In-Reply-To: <7206722a-f97e-5222-bea6-e327b22e4b5b@leemhuis.info> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1669550904;bbc84c01; X-HE-SMSGID: 1ozGSM-0000zd-9H On 25.11.22 09:36, Thorsten Leemhuis wrote: > On 24.11.22 10:20, Jonas Gorski wrote: >> when an IPv4 route gets removed because its nexthop was deleted, the >> kernel does not send a RTM_DELROUTE netlink notifications anymore in >> 6.1. A bisect lead me to 61b91eb33a69 ("ipv4: Handle attempt to delete >> multipath route when fib_info contains an nh reference"), and >> reverting it makes it work again. > > Thanks for the report. To be sure below issue doesn't fall through the > cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression > tracking bot: > > #regzbot ^introduced 61b91eb33a69 > #regzbot title net: RTM_DELROUTE not sent anymore when deleting (last) > nexthop of routes > #regzbot ignore-activity #regzbot monitor: https://lore.kernel.org/all/20221124210932.2470010-1-idosch@nvidia.com/