linux-kernel - Re: [PATCH net-next v6] l2tp: fix double dst_release() on sk_dst

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Message-ID: <202512040433.TgRZXwYf-lkp@intel.com>
Date: Thu, 4 Dec 2025 04:31:41 +0800
From: kernel test robot <lkp@...el.com>
To: Mikhail Lobanov <m.lobanov@...a.ru>,
	"David S. Miller" <davem@...emloft.net>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org, Mikhail Lobanov <m.lobanov@...a.ru>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>, David Bauer <mail@...id-bauer.net>,
	James Chapman <jchapman@...alix.com>, linux-kernel@...r.kernel.org,
	lvc-project@...uxtesting.org
Subject: Re: [PATCH net-next v6] l2tp: fix double dst_release() on
 sk_dst_cache race

Hi Mikhail,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Mikhail-Lobanov/l2tp-fix-double-dst_release-on-sk_dst_cache-race/20251203-021549
base:   net-next/main
patch link:    https://lore.kernel.org/r/20251202180545.18974-1-m.lobanov%40rosa.ru
patch subject: [PATCH net-next v6] l2tp: fix double dst_release() on sk_dst_cache race
config: x86_64-buildonly-randconfig-002-20251203 (https://download.01.org/0day-ci/archive/20251204/202512040433.TgRZXwYf-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251204/202512040433.TgRZXwYf-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512040433.TgRZXwYf-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "ip_options_build" [net/l2tp/l2tp_core.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki