[jlayton:dir-deleg 42/43] fs/nfsd/nfs4state.c:9707:56: warning: format specifies type 'long' but the argument has type 'int'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git dir-deleg
head:   0c6668479bba48114e5031d6fb3db53d80d8d6ad
commit: 1a1ed17116bff2122995a9a1f09e5c4df41b2997 [42/43] DEBUG: trace_printks all over the place
config: i386-buildonly-randconfig-001-20250522 (https://download.01.org/0day-ci/archive/20250522/202505222243.QDfjEgah-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250522/202505222243.QDfjEgah-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/202505222243.QDfjEgah-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/nfsd/nfs4state.c:9707:56: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
    9707 |                         trace_printk("encoded remove4 is %ld bytes long\n", (u8 *)stream->p - p);
         |                                                          ~~~                ^~~~~~~~~~~~~~~~~~~
         |                                                          %d
   include/linux/kernel.h:275:26: note: expanded from macro 'trace_printk'
     275 |                 do_trace_printk(fmt, ##__VA_ARGS__);    \
         |                                 ~~~    ^~~~~~~~~~~
   include/linux/kernel.h:286:37: note: expanded from macro 'do_trace_printk'
     286 |         __trace_printk_check_format(fmt, ##args);                       \
         |                                     ~~~    ^~~~
   include/linux/kernel.h:238:40: note: expanded from macro '__trace_printk_check_format'
     238 |                 ____trace_printk_check_format(fmt, ##args);             \
         |                                               ~~~    ^~~~
>> fs/nfsd/nfs4state.c:9707:56: warning: format specifies type 'long' but the argument has type 'int' [-Wformat]
    9707 |                         trace_printk("encoded remove4 is %ld bytes long\n", (u8 *)stream->p - p);
         |                                                          ~~~                ^~~~~~~~~~~~~~~~~~~
         |                                                          %d
   include/linux/kernel.h:275:26: note: expanded from macro 'trace_printk'
     275 |                 do_trace_printk(fmt, ##__VA_ARGS__);    \
         |                                 ~~~    ^~~~~~~~~~~
   include/linux/kernel.h:291:36: note: expanded from macro 'do_trace_printk'
     291 |                 __trace_printk(_THIS_IP_, fmt, ##args);                 \
         |                                           ~~~    ^~~~
   2 warnings generated.


vim +9707 fs/nfsd/nfs4state.c

  9645	
  9646	int
  9647	nfsd_handle_dir_event(u32 mask, const struct inode *inode, const struct inode *dir,
  9648				  const struct qstr *name)
  9649	{
  9650		struct file_lock_context *ctx;
  9651		struct file_lock_core *flc;
  9652	
  9653		trace_nfsd_file_fsnotify_handle_dir_event(inode, dir, mask);
  9654	
  9655		ctx = locks_inode_context(dir);
  9656		if (!ctx || list_empty(&ctx->flc_lease)) {
  9657			trace_printk("no ctx or list_empty\n");
  9658			return 0;
  9659		}
  9660	
  9661		/*
  9662		 * Do getattr against @inode, and then generate an fattr4. Use that as the
  9663		 * ne_attrs in the notify_entry4's.
  9664		 */
  9665		spin_lock(&ctx->flc_lock);
  9666		list_for_each_entry(flc, &ctx->flc_lease, flc_list) {
  9667			struct file_lease *fl = container_of(flc, struct file_lease, c);
  9668			struct nfs4_delegation *dp = flc->flc_owner;
  9669			struct nfsd4_cb_notify *ncn = &dp->dl_cb_notify;
  9670			struct nfsd4_notify_spool *nns = ncn->ncn_gather;
  9671			struct xdr_stream *stream = &nns->nns_stream;
  9672			static uint32_t zerobm = 0;
  9673	
  9674			trace_printk("considering fl=%p\n", fl);
  9675			if (fl->fl_lmops != &nfsd_dir_lease_mng_ops) {
  9676				trace_printk("fl_lmops doesn't match\n");
  9677				continue;
  9678			}
  9679	
  9680			/* If no buffer or slots are available, give up and break the deleg */
  9681			if (!nns || nns->nns_idx >= NFSD4_NOTIFY_SPOOL_SZ) {
  9682				trace_printk("no buffer");
  9683				nfsd_break_deleg_cb(fl);
  9684				continue;
  9685			}
  9686	
  9687			if (mask & FS_DELETE) {
  9688				static uint32_t notify_remove_bitmap = BIT(NOTIFY4_REMOVE_ENTRY);
  9689				struct notify4 *ent = &nns->nns_ent[nns->nns_idx];
  9690				struct notify_remove4 nr = { };
  9691				u8 *p = (u8 *)(stream->p);
  9692	
  9693				if (!(flc->flc_flags & FL_IGN_DIR_DELETE)) {
  9694					trace_printk("FL_IGN_DIR_DELETE not set\n");
  9695					continue;
  9696				}
  9697	
  9698				nr.nrm_old_entry.ne_file.len = name->len;
  9699				nr.nrm_old_entry.ne_file.data = (char *)name->name;
  9700				nr.nrm_old_entry.ne_attrs.attrmask.count = 1;
  9701				nr.nrm_old_entry.ne_attrs.attrmask.element = &zerobm;
  9702				if (!xdrgen_encode_notify_remove4(stream, &nr)) {
  9703					pr_warn("nfsd: unable to marshal notify_remove4 to xdr stream\n");
  9704					continue;
  9705				}
  9706	
> 9707				trace_printk("encoded remove4 is %ld bytes long\n", (u8 *)stream->p - p);

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