buildkernel fails

FreeBSD FBSD10 10.0-CURRENT FreeBSD 10.0-CURRENT #38 r248401: Sat Mar 16 
21:39:04 CDT 2013     root_at_FBSD10:/usr/obj/usr/src/sys/MYKERNEL


cc -O2 -pipe -fno-strict-aliasing -Werror -D_KERNEL -DKLD_MODULE -nostdinc 
-DHAVE_KERNEL_OPTION_HEADERS -include 
/usr/obj/usr/src/sys/MYKERNEL/opt_global.h -I. -I_at_ -I_at_/contrib/altq 
-fno-common -g -fno-omit-frame-pointer -I/usr/obj/usr/src/sys/MYKERNEL 
-mno-aes -mno-avx -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse 
-msoft-float  -fno-asynchronous-unwind-tables -ffreestanding 
-fstack-protector -std=iso9899:1999 -Qunused-arguments -fstack-protector 
-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes 
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef 
-Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs 
-fdiagnostics-show-option  -Wno-error-tautological-compare 
-Wno-error-empty-body  -Wno-error-parentheses-equality -c 
/usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_vfsops.c
cc -O2 -pipe -fno-strict-aliasing -Werror -D_KERNEL -DKLD_MODULE -nostdinc 
-DHAVE_KERNEL_OPTION_HEADERS -include 
/usr/obj/usr/src/sys/MYKERNEL/opt_global.h -I. -I_at_ -I_at_/contrib/altq 
-fno-common -g -fno-omit-frame-pointer -I/usr/obj/usr/src/sys/MYKERNEL 
-mno-aes -mno-avx -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse 
-msoft-float  -fno-asynchronous-unwind-tables -ffreestanding 
-fstack-protector -std=iso9899:1999 -Qunused-arguments -fstack-protector 
-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes 
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef 
-Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs 
-fdiagnostics-show-option  -Wno-error-tautological-compare 
-Wno-error-empty-body  -Wno-error-parentheses-equality -c 
/usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_subr.c
ctfconvert -L VERSION -g tmpfs_fifoops.o
/usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_vnops.c:1596:12: error: 
format specifies type 'unsigned int' but the argument has type 'u_long' 
(aka 'unsigned long') [-Werror,-Wformat]
             node, node->tn_flags, node->tn_links);
                   ^~~~~~~~~~~~~~
1 error generated.
*** [tmpfs_vnops.o] Error code 1
ctfconvert -L VERSION -g tmpfs_vfsops.o
ctfconvert -L VERSION -g tmpfs_subr.o
1 error
*** [all] Error code 2
1 error
*** [modules-all] Error code 2
2 errors
*** [buildkernel] Error code 2
1 error
*** [buildkernel] Error code 2
1 error