netdev - Re: [PATCH v4 13/72] nstree: introduce a unified tree

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Message-ID: <202510292247.swX8RW4u-lkp@intel.com>
Date: Wed, 29 Oct 2025 22:44:57 +0800
From: kernel test robot <lkp@...el.com>
To: Christian Brauner <brauner@...nel.org>, linux-fsdevel@...r.kernel.org,
	Josef Bacik <josef@...icpanda.com>,
	Jeff Layton <jlayton@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Jann Horn <jannh@...gle.com>, Mike Yuan <me@...dnzj.com>,
	Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>,
	Lennart Poettering <mzxreary@...inter.de>,
	Daan De Meyer <daan.j.demeyer@...il.com>,
	Aleksa Sarai <cyphar@...har.com>,
	Amir Goldstein <amir73il@...il.com>, Tejun Heo <tj@...nel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	bpf@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>,
	Christian Brauner <brauner@...nel.org>
Subject: Re: [PATCH v4 13/72] nstree: introduce a unified tree

Hi Christian,

kernel test robot noticed the following build errors:

[auto build test ERROR on 3a8660878839faadb4f1a6dd72c3179c1df56787]

url:    https://github.com/intel-lab-lkp/linux/commits/Christian-Brauner/libfs-allow-to-specify-s_d_flags/20251029-205841
base:   3a8660878839faadb4f1a6dd72c3179c1df56787
patch link:    https://lore.kernel.org/r/20251029-work-namespace-nstree-listns-v4-13-2e6f823ebdc0%40kernel.org
patch subject: [PATCH v4 13/72] nstree: introduce a unified tree
config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251029/202510292247.swX8RW4u-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d1c086e82af239b245fe8d7832f2753436634990)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251029/202510292247.swX8RW4u-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/202510292247.swX8RW4u-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/nstree.c:170:43: error: no member named 'type' in 'struct ns_tree'
     170 |         VFS_WARN_ON_ONCE(ns->ns_type != ns_tree->type);
         |                                         ~~~~~~~  ^
   kernel/nstree.c:297:93: error: no member named 'type' in 'struct ns_tree'
     297 |         VFS_WARN_ON_ONCE(list_entry_rcu(list, struct ns_common, ns_list_node)->ns_type != ns_tree->type);
         |                                                                                           ~~~~~~~  ^
   2 errors generated.


vim +170 kernel/nstree.c

885fc8ac0a4dc70 Christian Brauner 2025-09-12  165  
885fc8ac0a4dc70 Christian Brauner 2025-09-12  166  void __ns_tree_remove(struct ns_common *ns, struct ns_tree *ns_tree)
885fc8ac0a4dc70 Christian Brauner 2025-09-12  167  {
885fc8ac0a4dc70 Christian Brauner 2025-09-12  168  	VFS_WARN_ON_ONCE(RB_EMPTY_NODE(&ns->ns_tree_node));
885fc8ac0a4dc70 Christian Brauner 2025-09-12  169  	VFS_WARN_ON_ONCE(list_empty(&ns->ns_list_node));
4055526d35746ce Christian Brauner 2025-09-24 @170  	VFS_WARN_ON_ONCE(ns->ns_type != ns_tree->type);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  171  
01da9c6ec4269ba Christian Brauner 2025-10-29  172  	write_seqlock(&ns_tree_lock);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  173  	rb_erase(&ns->ns_tree_node, &ns_tree->ns_tree);
01da9c6ec4269ba Christian Brauner 2025-10-29  174  	rb_erase(&ns->ns_unified_tree_node, &ns_unified_tree);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  175  	list_bidir_del_rcu(&ns->ns_list_node);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  176  	RB_CLEAR_NODE(&ns->ns_tree_node);
01da9c6ec4269ba Christian Brauner 2025-10-29  177  	write_sequnlock(&ns_tree_lock);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  178  }
885fc8ac0a4dc70 Christian Brauner 2025-09-12  179  EXPORT_SYMBOL_GPL(__ns_tree_remove);
885fc8ac0a4dc70 Christian Brauner 2025-09-12  180  

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