Using -Oline -j 72 W=1 redirect to /tmp/tmp.4vMX325lXc and /tmp/tmp.4TA1PlWR19
LLVM=1 cc="ccache clang"
clang version 20.1.8 (Fedora 20.1.8-4.fc42)
Tree base:
a0c3aefb08cd ("Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/bridge/netfilter/nf_conntrack_bridge.o
  CC      net/netfilter/utils.o
  CC [M]  net/netfilter/nft_chain_filter.o
  CC [M]  net/netfilter/nft_chain_route.o
  CC [M]  net/netfilter/nft_chain_nat.o
  AR      net/netfilter/built-in.a
  LD [M]  net/netfilter/nf_tables.o
  CC [M]  net/xfrm/xfrm_user.o
  AR      net/built-in.a
  GEN     kernel/kheaders_data.tar.xz
  CC [M]  kernel/kheaders.o
  AR      built-in.a
  AR      vmlinux.a
  LD      vmlinux.o
  MODPOST Module.symvers
  UPD     include/generated/utsversion.h
  CC      init/version-timestamp.o
  KSYMS   .tmp_vmlinux0.kallsyms.S
  AS      .tmp_vmlinux0.kallsyms.o
  LD      .tmp_vmlinux1
  NM      .tmp_vmlinux1.syms
  KSYMS   .tmp_vmlinux1.kallsyms.S
  AS      .tmp_vmlinux1.kallsyms.o
  LD      .tmp_vmlinux2
  NM      .tmp_vmlinux2.syms
  KSYMS   .tmp_vmlinux2.kallsyms.S
  AS      .tmp_vmlinux2.kallsyms.o
  LD      vmlinux.unstripped
  NM      System.map
  SORTTAB vmlinux.unstripped
  OBJCOPY modules.builtin.modinfo
  GEN     modules.builtin
  OBJCOPY vmlinux
  LD [M]  kernel/kheaders.ko
  GEN     modules.builtin.ranges
  CC      arch/x86/boot/version.o
  RELOCS  arch/x86/boot/compressed/vmlinux.relocs
  OBJCOPY arch/x86/boot/compressed/vmlinux.bin
  CC      arch/x86/boot/compressed/kaslr.o
  VOFFSET arch/x86/boot/compressed/../voffset.h
  CC      arch/x86/boot/compressed/misc.o
  CC [M]  net/netfilter/nf_tables.mod.o
  CC [M]  net/netfilter/nft_chain_nat.mod.o
  CC [M]  net/bridge/netfilter/nf_conntrack_bridge.mod.o
  LD [M]  net/netfilter/nf_tables.ko
  LD [M]  net/netfilter/nft_chain_nat.ko
  LD [M]  net/bridge/netfilter/nf_conntrack_bridge.ko
  CC [M]  net/xfrm/xfrm_user.mod.o
  LD [M]  net/xfrm/xfrm_user.ko
  GZIP    arch/x86/boot/compressed/vmlinux.bin.gz
  MKPIGGY arch/x86/boot/compressed/piggy.S
  AS      arch/x86/boot/compressed/piggy.o
  LD      arch/x86/boot/compressed/vmlinux
  ZOFFSET arch/x86/boot/zoffset.h
  AS      arch/x86/boot/header.o
  LD      arch/x86/boot/setup.elf
  OBJCOPY arch/x86/boot/setup.bin
  OBJCOPY arch/x86/boot/vmlinux.bin
  BUILD   arch/x86/boot/bzImage
Kernel: arch/x86/boot/bzImage is ready  (#7486)
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/xfrm/xfrm_user.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7486)
  CC [M]  net/xfrm/xfrm_user.mod.o
  LD [M]  net/xfrm/xfrm_user.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/xfrm/xfrm_user.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7486)
  CC [M]  net/xfrm/xfrm_user.mod.o
  LD [M]  net/xfrm/xfrm_user.ko