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Same problem is with localio.c. If the interwebs are correct, gcc-8.3 was released in 2014. ISTR that recent releases of the Linux kernel no longer support gcc versions that old. It appears to be snagging on kernel-wide utility helpers, not code specific to NFS. If that's the case, it might not be possible for us to address this breakage. Adding Mike, who contributed this code. > Error is: > > $ make bzImage > CALL scripts/checksyscalls.sh > DESCEND objtool > INSTALL libsubcmd_headers > CC fs/nfs_common/nfslocalio.o > In file included from ./include/linux/rbtree.h:24, > from ./include/linux/mm_types.h:11, > from ./include/linux/mmzone.h:22, > from ./include/linux/gfp.h:7, > from ./include/linux/umh.h:4, > from ./include/linux/kmod.h:9, > from ./include/linux/module.h:17, > from fs/nfs_common/nfslocalio.c:7: > fs/nfs_common/nfslocalio.c: In function ‘nfs_close_local_fh’: > ./include/linux/rcupdate.h:531:9: error: dereferencing pointer to incomplete type ‘struct nfsd_file’ > typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \ > ^ > ./include/linux/rcupdate.h:650:31: note: in expansion of macro ‘__rcu_access_pointer’ > #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu) > ^~~~~~~~~~~~~~~~~~~~ > fs/nfs_common/nfslocalio.c:288:10: note: in expansion of macro ‘rcu_access_pointer’ > ro_nf = rcu_access_pointer(nfl->ro_file); > ^~~~~~~~~~~~~~~~~~ > make[4]: *** [scripts/Makefile.build:207: fs/nfs_common/nfslocalio.o] Error 1 > make[3]: *** [scripts/Makefile.build:465: fs/nfs_common] Error 2 > make[2]: *** [scripts/Makefile.build:465: fs] Error 2 > make[1]: *** [/home/pali/develop/kernel.org/linux/Makefile:1994: .] Error 2 > make: *** [Makefile:251: __sub-make] Error 2 > > > $ make fs/nfs/localio.o > CALL scripts/checksyscalls.sh > DESCEND objtool > INSTALL libsubcmd_headers > CC fs/nfs/localio.o > In file included from ./include/linux/rbtree.h:24, > from ./include/linux/mm_types.h:11, > from ./include/linux/mmzone.h:22, > from ./include/linux/gfp.h:7, > from ./include/linux/umh.h:4, > from ./include/linux/kmod.h:9, > from ./include/linux/module.h:17, > from fs/nfs/localio.c:11: > fs/nfs/localio.c: In function ‘nfs_local_open_fh’: > ./include/linux/rcupdate.h:538:9: error: dereferencing pointer to incomplete type ‘struct nfsd_file’ > typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \ > ^ > ./include/linux/rcupdate.h:686:2: note: in expansion of macro ‘__rcu_dereference_check’ > __rcu_dereference_check((p), __UNIQUE_ID(rcu), \ > ^~~~~~~~~~~~~~~~~~~~~~~ > ./include/linux/rcupdate.h:758:28: note: in expansion of macro ‘rcu_dereference_check’ > #define rcu_dereference(p) rcu_dereference_check(p, 0) > ^~~~~~~~~~~~~~~~~~~~~ > fs/nfs/localio.c:275:7: note: in expansion of macro ‘rcu_dereference’ > nf = rcu_dereference(*pnf); > ^~~~~~~~~~~~~~~ > make[4]: *** [scripts/Makefile.build:207: fs/nfs/localio.o] Error 1 > make[3]: *** [scripts/Makefile.build:465: fs/nfs] Error 2 > make[2]: *** [scripts/Makefile.build:465: fs] Error 2 > make[1]: *** [/home/pali/develop/kernel.org/linux/Makefile:1994: .] Error 2 > make: *** [Makefile:251: __sub-make] Error 2 > > > Reproduced from commit 7ff71e6d9239 ("Merge tag 'alpha-fixes-v6.14-rc2' > of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha"). -- Chuck Lever