[dhowells-fs:ceph-iter 77/105] fs/ceph/xattr.c:1415:16: error: no member named 'length' in 'struct ceph_databuf'

[dhowells-fs:ceph-iter 77/105] fs/ceph/xattr.c:1415:16: error: no member named 'length' in 'struct ceph_databuf'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git ceph-iter
head:   2cf82c6e7baf6d3a2adc0692707028da395f1553
commit: 5f8e8cf45a6f84108c392fdf99ccab5c44d5bb79 [77/105] ceph: Convert ceph_mds_request::r_pagelist to a databuf
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240118/202401180545.om4l6lkx-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240118/202401180545.om4l6lkx-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401180545.om4l6lkx-lkp@intel.com/

All errors (new ones prefixed by >>):

>> fs/ceph/xattr.c:1415:16: error: no member named 'length' in 'struct ceph_databuf'
    1415 |                 BUG_ON(dbuf->length <= sizeof(__le32));
         |                        ~~~~  ^
   include/asm-generic/bug.h:71:45: note: expanded from macro 'BUG_ON'
      71 | #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
         |                                             ^~~~~~~~~
   include/linux/compiler.h:77:42: note: expanded from macro 'unlikely'
      77 | # define unlikely(x)    __builtin_expect(!!(x), 0)
         |                                             ^
   1 error generated.


vim +1415 fs/ceph/xattr.c

  1374	
  1375	#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
  1376	int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
  1377				   struct ceph_acl_sec_ctx *as_ctx)
  1378	{
  1379		struct ceph_databuf *dbuf = as_ctx->dbuf;
  1380		const char *name;
  1381		size_t name_len;
  1382		int err;
  1383	
  1384		err = security_dentry_init_security(dentry, mode, &dentry->d_name,
  1385						    &name, &as_ctx->sec_ctx,
  1386						    &as_ctx->sec_ctxlen);
  1387		if (err < 0) {
  1388			WARN_ON_ONCE(err != -EOPNOTSUPP);
  1389			err = 0; /* do nothing */
  1390			goto out;
  1391		}
  1392	
  1393		err = -ENOMEM;
  1394		if (!dbuf) {
  1395			dbuf = ceph_databuf_req_alloc(0, PAGE_SIZE, GFP_KERNEL);
  1396			if (!dbuf)
  1397				goto out;
  1398			ceph_databuf_encode_32(dbuf, 1);
  1399		}
  1400	
  1401		/*
  1402		 * FIXME: Make security_dentry_init_security() generic. Currently
  1403		 * It only supports single security module and only selinux has
  1404		 * dentry_init_security hook.
  1405		 */
  1406		name_len = strlen(name);
  1407		err = ceph_databuf_reserve(dbuf, 4 * 2 + name_len + as_ctx->sec_ctxlen,
  1408					   GFP_KERNEL);
  1409		if (err)
  1410			goto out;
  1411	
  1412		if (as_ctx->dbuf) {
  1413			/* update count of KV pairs */
  1414			__le32 *addr = kmap_ceph_databuf_page(dbuf, 0);
> 1415			BUG_ON(dbuf->length <= sizeof(__le32));
  1416			le32_add_cpu(addr, 1);
  1417			kunmap_local(addr);
  1418		} else {
  1419			as_ctx->dbuf = dbuf;
  1420		}
  1421	
  1422		ceph_databuf_encode_32(dbuf, name_len);
  1423		ceph_databuf_append(dbuf, name, name_len);
  1424	
  1425		ceph_databuf_encode_32(dbuf, as_ctx->sec_ctxlen);
  1426		ceph_databuf_append(dbuf, as_ctx->sec_ctx, as_ctx->sec_ctxlen);
  1427	
  1428		err = 0;
  1429	out:
  1430		if (dbuf && !as_ctx->dbuf)
  1431			ceph_databuf_release(dbuf);
  1432		return err;
  1433	}
  1434	#endif /* CONFIG_CEPH_FS_SECURITY_LABEL */
  1435	#endif /* CONFIG_SECURITY */
  1436	

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