tree: https://github.com/ceph/ceph-client.git wip-netfs-lib head: a72056dc6ccfb6c11070373aaa72e4e3b09decc5 commit: 15f4b2f986a135d8038928d3a2ca63d112987843 [5/7] ceph: convert readpage to fscache read helper config: x86_64-randconfig-m001-20210125 (attached as .config) compiler: gcc-9 (Debian 9.3.0-20) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> New smatch warnings: fs/ceph/addr.c:257 ceph_netfs_issue_op() warn: unsigned 'len' is never less than zero. Old smatch warnings: fs/ceph/addr.c:501 start_read() warn: should 'nr_pages << 12' be a 64 bit type? fs/ceph/addr.c:536 start_read() warn: should 'nr_pages << 12' be a 64 bit type? fs/ceph/addr.c:2140 __ceph_pool_perm_get() error: we previously assumed 'pool_ns' could be null (see line 2129) include/linux/ceph/string_table.h:46 ceph_compare_string() error: we previously assumed 'cs' could be null (see line 41) vim +/len +257 fs/ceph/addr.c 230 231 static void ceph_netfs_issue_op(struct netfs_read_subrequest *subreq) 232 { 233 struct netfs_read_request *rreq = subreq->rreq; 234 struct inode *inode = rreq->mapping->host; 235 struct ceph_inode_info *ci = ceph_inode(inode); 236 struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 237 struct ceph_osd_request *req = NULL; 238 struct ceph_vino vino = ceph_vino(inode); 239 struct iov_iter iter; 240 struct page **pages; 241 size_t page_off; 242 int err = 0; 243 u64 len = subreq->len; 244 245 req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, vino, subreq->start, &len, 246 0, 1, CEPH_OSD_OP_READ, 247 CEPH_OSD_FLAG_READ | fsc->client->osdc.client->options->read_from_replica, 248 NULL, ci->i_truncate_seq, ci->i_truncate_size, false); 249 if (IS_ERR(req)) { 250 err = PTR_ERR(req); 251 goto out; 252 } 253 254 dout("%s: pos=%llu orig_len=%zu len=%llu\n", __func__, subreq->start, subreq->len, len); 255 iov_iter_xarray(&iter, READ, &rreq->mapping->i_pages, subreq->start, len); 256 len = iov_iter_get_pages_alloc(&iter, &pages, len, &page_off); > 257 if (len < 0) { 258 err = len; 259 dout("%s: iov_ter_get_pages_alloc returned %d\n", __func__, err); 260 goto out; 261 } 262 263 /* should always give us a page-aligned read */ 264 WARN_ON_ONCE(page_off); 265 266 osd_req_op_extent_osd_data_pages(req, 0, pages, len, 0, false, false); 267 req->r_callback = finish_netfs_read; 268 req->r_priv = subreq; 269 req->r_inode = inode; 270 ihold(inode); 271 272 err = ceph_osdc_start_request(req->r_osdc, req, false); 273 if (err) 274 iput(inode); 275 out: 276 if (req) 277 ceph_osdc_put_request(req); 278 if (err) 279 netfs_subreq_terminated(subreq, err); 280 dout("%s: result %d\n", __func__, err); 281 } 282 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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