[dhowells-fs:afs-operation 20/27] fs/afs/vl_alias.c:318:8-17: ERROR: reference preceded by free on line 316

[dhowells-fs:afs-operation 20/27] fs/afs/vl_alias.c:318:8-17: ERROR: reference preceded by free on line 316

[kbuild test robot]

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CC: kbuild-all(a)lists.01.org
TO: "David, Howells," <dhowells@redhat.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git afs-operation
head:   028362346b339f27505b0eb27e7c7f68cd0fc8b9
commit: 298b5d29c83596b495250fdcc97d16183f67b895 [20/27] afs: Detect cell aliases 3 - YFS Cells with a canonical cell name op
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago
config: nds32-randconfig-c021-20200529 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>


coccinelle warnings: (new ones prefixed by >>)

>> fs/afs/vl_alias.c:318:8-17: ERROR: reference preceded by free on line 316

# https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?id=298b5d29c83596b495250fdcc97d16183f67b895
git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
git remote update dhowells-fs
git checkout 298b5d29c83596b495250fdcc97d16183f67b895
vim +318 fs/afs/vl_alias.c

298b5d29c83596b David Howells 2020-04-27  299  
298b5d29c83596b David Howells 2020-04-27  300  static int yfs_check_canonical_cell_name(struct afs_cell *cell, struct key *key)
298b5d29c83596b David Howells 2020-04-27  301  {
298b5d29c83596b David Howells 2020-04-27  302  	struct afs_cell *master;
298b5d29c83596b David Howells 2020-04-27  303  	char *cell_name;
298b5d29c83596b David Howells 2020-04-27  304  
298b5d29c83596b David Howells 2020-04-27  305  	cell_name = afs_vl_get_cell_name(cell, key);
298b5d29c83596b David Howells 2020-04-27  306  	if (IS_ERR(cell_name))
298b5d29c83596b David Howells 2020-04-27  307  		return PTR_ERR(cell_name);
298b5d29c83596b David Howells 2020-04-27  308  
298b5d29c83596b David Howells 2020-04-27  309  	if (strcmp(cell_name, cell->name) == 0) {
298b5d29c83596b David Howells 2020-04-27  310  		kfree(cell_name);
298b5d29c83596b David Howells 2020-04-27  311  		return 0;
298b5d29c83596b David Howells 2020-04-27  312  	}
298b5d29c83596b David Howells 2020-04-27  313  
298b5d29c83596b David Howells 2020-04-27  314  	master = afs_lookup_cell(cell->net, cell_name, strlen(cell_name),
298b5d29c83596b David Howells 2020-04-27  315  				 NULL, false);
298b5d29c83596b David Howells 2020-04-27 @316  	kfree(cell_name);
298b5d29c83596b David Howells 2020-04-27  317  	if (IS_ERR(master)) {
298b5d29c83596b David Howells 2020-04-27 @318  		kfree(cell_name);
298b5d29c83596b David Howells 2020-04-27  319  		return PTR_ERR(master);
298b5d29c83596b David Howells 2020-04-27  320  	}
298b5d29c83596b David Howells 2020-04-27  321  
298b5d29c83596b David Howells 2020-04-27  322  	cell->alias_of = master; /* Transfer our ref */
298b5d29c83596b David Howells 2020-04-27  323  	return 1;
298b5d29c83596b David Howells 2020-04-27  324  }
298b5d29c83596b David Howells 2020-04-27  325  

---
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