linux-kernel - fs/nfs/./nfs4trace.h:1002:1: sparse: sparse: incorrect type in assignment (different base types)

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Message-ID: <202512110651.MRznYgXw-lkp@intel.com>
Date: Thu, 11 Dec 2025 06:20:01 +0800
From: kernel test robot <lkp@...el.com>
To: Jeff Layton <jlayton@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Trond Myklebust <trond.myklebust@...merspace.com>,
	Benjamin Coddington <bcodding@...hat.com>
Subject: fs/nfs/./nfs4trace.h:1002:1: sparse: sparse: incorrect type in
 assignment (different base types)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0048fbb4011ec55c32d3148b2cda56433f273375
commit: 5dd03d14b3a9595ea320a55c499ebf85b422392f nfs: new tracepoint in nfs_delegation_need_return
date:   5 months ago
config: x86_64-randconfig-r111-20251210 (https://download.01.org/0day-ci/archive/20251211/202512110651.MRznYgXw-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512110651.MRznYgXw-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512110651.MRznYgXw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/nfs/nfs4trace.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, fs/nfs/nfs4trace.h):
>> fs/nfs/./nfs4trace.h:1002:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int fmode @@     got restricted fmode_t const [usertype] type @@
   fs/nfs/./nfs4trace.h:1002:1: sparse:     expected unsigned int fmode
   fs/nfs/./nfs4trace.h:1002:1: sparse:     got restricted fmode_t const [usertype] type
   fs/nfs/nfs4trace.c: note: in included file (through include/trace/perf.h, include/trace/define_trace.h, fs/nfs/nfs4trace.h):
>> fs/nfs/./nfs4trace.h:1002:1: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int fmode @@     got restricted fmode_t const [usertype] type @@
   fs/nfs/./nfs4trace.h:1002:1: sparse:     expected unsigned int fmode
   fs/nfs/./nfs4trace.h:1002:1: sparse:     got restricted fmode_t const [usertype] type

vim +1002 fs/nfs/./nfs4trace.h

   989	
   990	#define show_delegation_flags(flags) \
   991		__print_flags(flags, "|", \
   992			{ BIT(NFS_DELEGATION_NEED_RECLAIM), "NEED_RECLAIM" }, \
   993			{ BIT(NFS_DELEGATION_RETURN), "RETURN" }, \
   994			{ BIT(NFS_DELEGATION_RETURN_IF_CLOSED), "RETURN_IF_CLOSED" }, \
   995			{ BIT(NFS_DELEGATION_REFERENCED), "REFERENCED" }, \
   996			{ BIT(NFS_DELEGATION_RETURNING), "RETURNING" }, \
   997			{ BIT(NFS_DELEGATION_REVOKED), "REVOKED" }, \
   998			{ BIT(NFS_DELEGATION_TEST_EXPIRED), "TEST_EXPIRED" }, \
   999			{ BIT(NFS_DELEGATION_INODE_FREEING), "INODE_FREEING" }, \
  1000			{ BIT(NFS_DELEGATION_RETURN_DELAYED), "RETURN_DELAYED" })
  1001	
> 1002	DECLARE_EVENT_CLASS(nfs4_delegation_event,
  1003			TP_PROTO(
  1004				const struct nfs_delegation *delegation
  1005			),
  1006	
  1007			TP_ARGS(delegation),
  1008	
  1009			TP_STRUCT__entry(
  1010				__field(u32, fhandle)
  1011				__field(unsigned int, fmode)
  1012				__field(unsigned long, flags)
  1013			),
  1014	
  1015			TP_fast_assign(
  1016				__entry->fhandle = nfs_fhandle_hash(NFS_FH(delegation->inode));
  1017				__entry->fmode = delegation->type;
  1018				__entry->flags = delegation->flags;
  1019			),
  1020	
  1021			TP_printk(
  1022				"fhandle=0x%08x fmode=%s flags=%s",
  1023				__entry->fhandle, show_fs_fmode_flags(__entry->fmode),
  1024				show_delegation_flags(__entry->flags)
  1025			)
  1026	);
  1027	#define DEFINE_NFS4_DELEGATION_EVENT(name) \
  1028		DEFINE_EVENT(nfs4_delegation_event, name, \
  1029				TP_PROTO( \
  1030					const struct nfs_delegation *delegation \
  1031				), \
  1032				TP_ARGS(delegation))
  1033	DEFINE_NFS4_DELEGATION_EVENT(nfs_delegation_need_return);
  1034	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki