After calling ceph_get_string(), ceph_put_string() is required to drop the reference in error paths.

Fixes: 779fe0fb8e18 ("ceph: rados pool namespace support") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li lihaoxiang@isrc.iscas.ac.cn --- fs/ceph/addr.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 322ed268f14a..690a54b4c316 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -2440,13 +2440,13 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,

err = ceph_osdc_alloc_messages(rd_req, GFP_NOFS); if (err) - goto out_unlock; + goto put_string;

wr_req = ceph_osdc_alloc_request(&fsc->client->osdc, NULL, 1, false, GFP_NOFS); if (!wr_req) { err = -ENOMEM; - goto out_unlock; + goto put_string; }

wr_req->r_flags = CEPH_OSD_FLAG_WRITE; @@ -2456,13 +2456,13 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,

err = ceph_osdc_alloc_messages(wr_req, GFP_NOFS); if (err) - goto out_unlock; + goto put_string;

/* one page should be large enough for STAT data */ pages = ceph_alloc_page_vector(1, GFP_KERNEL); if (IS_ERR(pages)) { err = PTR_ERR(pages); - goto out_unlock; + goto put_string; }

osd_req_op_raw_data_in_pages(rd_req, 0, pages, PAGE_SIZE, @@ -2480,7 +2480,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, else if (err != -EPERM) { if (err == -EBLOCKLISTED) fsc->blocklisted = true; - goto out_unlock; + goto put_string; }

if (err2 == 0 || err2 == -EEXIST) @@ -2489,14 +2489,14 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, if (err2 == -EBLOCKLISTED) fsc->blocklisted = true; err = err2; - goto out_unlock; + goto put_string; }

pool_ns_len = pool_ns ? pool_ns->len : 0; perm = kmalloc(struct_size(perm, pool_ns, pool_ns_len + 1), GFP_NOFS); if (!perm) { err = -ENOMEM; - goto out_unlock; + goto put_string; }

perm->pool = pool; @@ -2509,6 +2509,8 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, rb_link_node(&perm->node, parent, p); rb_insert_color(&perm->node, &mdsc->pool_perm_tree); err = 0; +put_string: + ceph_put_string(rd_req->r_base_oloc.pool_ns); out_unlock: up_write(&mdsc->pool_perm_rwsem);