linux-kernel - net/sunrpc/auth.c:725:34: sparse: sparse: incorrect type in initializer (different address spaces)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202312261006.VIxuWJPi-lkp@intel.com>
Date: Tue, 26 Dec 2023 10:47:03 +0800
From: kernel test robot <lkp@...el.com>
To: NeilBrown <neilb@...e.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Anna Schumaker <Anna.Schumaker@...app.com>
Subject: net/sunrpc/auth.c:725:34: sparse: sparse: incorrect type in
 initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fbafc3e621c3f4ded43720fdb1d6ce1728ec664e
commit: 5e16923b432bfe79fdfb7cd95ed8e63f6438b663 NFS/SUNRPC: don't lookup machine credential until rpcauth_bindcred().
date:   5 years ago
config: x86_64-randconfig-003-20231011 (https://download.01.org/0day-ci/archive/20231226/202312261006.VIxuWJPi-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231226/202312261006.VIxuWJPi-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/202312261006.VIxuWJPi-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> net/sunrpc/auth.c:725:34: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct cred const *cred @@     got struct cred const [noderef] __rcu *extern [addressable] [toplevel] cred @@
   net/sunrpc/auth.c:725:34: sparse:     expected struct cred const *cred
   net/sunrpc/auth.c:725:34: sparse:     got struct cred const [noderef] __rcu *extern [addressable] [toplevel] cred
   net/sunrpc/auth.c: note: in included file:
   include/linux/slab.h:332:43: sparse: sparse: dubious: x & !y
   include/linux/slab.h:332:43: sparse: sparse: dubious: x & !y

vim +725 net/sunrpc/auth.c

   718	
   719	static struct rpc_cred *
   720	rpcauth_bind_machine_cred(struct rpc_task *task, int lookupflags)
   721	{
   722		struct rpc_auth *auth = task->tk_client->cl_auth;
   723		struct auth_cred acred = {
   724			.principal = task->tk_client->cl_principal,
 > 725			.cred = init_task.cred,
   726		};
   727	
   728		if (!acred.principal)
   729			return NULL;
   730		dprintk("RPC: %5u looking up %s machine cred\n",
   731			task->tk_pid, task->tk_client->cl_auth->au_ops->au_name);
   732		return auth->au_ops->lookup_cred(auth, &acred, lookupflags);
   733	}
   734	

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