tree: git://linux-nfs.org/~cel/cel-2.6.git cel-next head: 6d589dcf10f53301db8d72c652e00e561e100428 commit: 2b535ecb464b0a6bee315ff8bf72f51a6da4e444 [1/3] NFSD: Fix sparse warning in nfssvc.c config: i386-randconfig-c003-20201217 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git remote add cel-cel-2.6 git://linux-nfs.org/~cel/cel-2.6.git git fetch --no-tags cel-cel-2.6 cel-next git checkout 2b535ecb464b0a6bee315ff8bf72f51a6da4e444 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/export.h:43, from include/linux/linkage.h:7, from include/linux/kernel.h:7, from include/linux/list.h:9, from include/linux/rculist.h:10, from include/linux/sched/signal.h:5, from fs/nfsd/nfssvc.c:10: fs/nfsd/xdr4.h: In function 'set_change_info': 750 | BUG_ON(!fhp->fh_pre_saved); | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ fs/nfsd/xdr4.h:750:2: note: in expansion of macro 'BUG_ON' 750 | BUG_ON(!fhp->fh_pre_saved); | ^~~~~~ In file included from fs/nfsd/nfssvc.c:31: 751 | cinfo->atomic = (u32)(fhp->fh_post_saved && !fhp->fh_no_atomic_attr); | ^~ 753 | cinfo->before_change = fhp->fh_pre_change; | ^~ 754 | cinfo->after_change = fhp->fh_post_change; | ^~ vim +750 fs/nfsd/xdr4.h ^1da177e4c3f415 include/linux/nfsd/xdr4.h Linus Torvalds 2005-04-16 746 ^1da177e4c3f415 include/linux/nfsd/xdr4.h Linus Torvalds 2005-04-16 747 static inline void ^1da177e4c3f415 include/linux/nfsd/xdr4.h Linus Torvalds 2005-04-16 748 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) ^1da177e4c3f415 include/linux/nfsd/xdr4.h Linus Torvalds 2005-04-16 749 { c1ac3ffcd0bc7e9 fs/nfsd/xdr4.h Neil Brown 2010-12-02 @750 BUG_ON(!fhp->fh_pre_saved); 716a8bc7f706eee fs/nfsd/xdr4.h Trond Myklebust 2020-11-30 @751 cinfo->atomic = (u32)(fhp->fh_post_saved && !fhp->fh_no_atomic_attr); c1ac3ffcd0bc7e9 fs/nfsd/xdr4.h Neil Brown 2010-12-02 752 c654b8a9cba6002 include/linux/nfsd/xdr4.h J. Bruce Fields 2009-04-16 @753 cinfo->before_change = fhp->fh_pre_change; c654b8a9cba6002 include/linux/nfsd/xdr4.h J. Bruce Fields 2009-04-16 @754 cinfo->after_change = fhp->fh_post_change; c654b8a9cba6002 include/linux/nfsd/xdr4.h J. Bruce Fields 2009-04-16 755 } ^1da177e4c3f415 include/linux/nfsd/xdr4.h Linus Torvalds 2005-04-16 756 :::::: The code at line 750 was first introduced by commit :::::: c1ac3ffcd0bc7e9617f62be8c7043d53ab84deac nfsd: Fix possible BUG_ON firing in set_change_info :::::: TO: Neil Brown <neilb(a)suse.de&gt; :::::: CC: J. Bruce Fields <bfields(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org