linux-kernel - ld.lld: error: undefined symbol: xt

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Message-ID: <202508061149.iM5f5qtm-lkp@intel.com>
Date: Wed, 6 Aug 2025 11:09:05 +0200
From: kernel test robot <lkp@...el.com>
To: Pablo Neira Ayuso <pablo@...filter.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: ld.lld: error: undefined symbol: xt_recseq

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   479058002c32b77acac43e883b92174e22c4be2d
commit: 9fce66583f06c212e95e4b76dd61d8432ffa56b6 netfilter: Exclude LEGACY TABLES on PREEMPT_RT.
date:   12 days ago
config: i386-buildonly-randconfig-2001-20250806 (https://download.01.org/0day-ci/archive/20250806/202508061149.iM5f5qtm-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/20250806/202508061149.iM5f5qtm-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/202508061149.iM5f5qtm-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: xt_recseq
   >>> referenced by x_tables.h:362 (include/linux/netfilter/x_tables.h:362)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_do_table) in archive vmlinux.a
   >>> referenced by x_tables.h:369 (include/linux/netfilter/x_tables.h:369)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_do_table) in archive vmlinux.a
   >>> referenced by x_tables.h:387 (include/linux/netfilter/x_tables.h:387)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_do_table) in archive vmlinux.a
   >>> referenced 4 more times
--
>> ld.lld: error: undefined symbol: xt_alloc_table_info
   >>> referenced by ip_tables.c:1735 (net/ipv4/netfilter/ip_tables.c:1735)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_register_table) in archive vmlinux.a
   >>> referenced by ip_tables.c:1126 (net/ipv4/netfilter/ip_tables.c:1126)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_set_ctl) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_check_match
   >>> referenced by ip_tables.c:471 (net/ipv4/netfilter/ip_tables.c:471)
   >>>               net/ipv4/netfilter/ip_tables.o:(translate_table) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_request_find_target
   >>> referenced by ip_tables.c:544 (net/ipv4/netfilter/ip_tables.c:544)
   >>>               net/ipv4/netfilter/ip_tables.o:(translate_table) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_check_target
   >>> referenced by ip_tables.c:510 (net/ipv4/netfilter/ip_tables.c:510)
   >>>               net/ipv4/netfilter/ip_tables.o:(translate_table) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_percpu_counter_free
   >>> referenced by ip_tables.c:566 (net/ipv4/netfilter/ip_tables.c:566)
   >>>               net/ipv4/netfilter/ip_tables.o:(translate_table) in archive vmlinux.a
   >>> referenced by ip_tables.c:654 (net/ipv4/netfilter/ip_tables.c:654)
   >>>               net/ipv4/netfilter/ip_tables.o:(cleanup_entry) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_unregister_table
   >>> referenced by ip_tables.c:1712 (net/ipv4/netfilter/ip_tables.c:1712)
   >>>               net/ipv4/netfilter/ip_tables.o:(__ipt_unregister_table) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_find_table
   >>> referenced by ip_tables.c:1794 (net/ipv4/netfilter/ip_tables.c:1794)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_unregister_table_pre_exit) in archive vmlinux.a
   >>> referenced by ip_tables.c:1802 (net/ipv4/netfilter/ip_tables.c:1802)
   >>>               net/ipv4/netfilter/ip_tables.o:(ipt_unregister_table_exit) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_copy_counters
   >>> referenced by ip_tables.c:1167 (net/ipv4/netfilter/ip_tables.c:1167)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_set_ctl) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_find_table_lock
   >>> referenced by ip_tables.c:1171 (net/ipv4/netfilter/ip_tables.c:1171)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_set_ctl) in archive vmlinux.a
   >>> referenced by ip_tables.c:1018 (net/ipv4/netfilter/ip_tables.c:1018)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_get_ctl) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: xt_table_unlock
   >>> referenced by ip_tables.c:1196 (net/ipv4/netfilter/ip_tables.c:1196)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_set_ctl) in archive vmlinux.a
   >>> referenced by ip_tables.c:0 (net/ipv4/netfilter/ip_tables.c:0)
   >>>               net/ipv4/netfilter/ip_tables.o:(do_ipt_get_ctl) in archive vmlinux.a
   >>> referenced by ip_tables.c:1076 (net/ipv4/netfilter/ip_tables.c:1076)
   >>>               net/ipv4/netfilter/ip_tables.o:(__do_replace) in archive vmlinux.a
   >>> referenced 1 more times
..

-- 
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