Using -Oline -j 72 W=1 redirect to /tmp/tmp.R4LoM5FqHF and /tmp/tmp.i06ccJET51
LLVM=1 cc=clang
clang version 18.1.8 (Fedora 18.1.8-1.fc40)
Tree base:
b62607870b29 ("Merge branch 'net-phylink-simplify-sfp-phy-attachment'")
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
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC      net/netlabel/netlabel_user.o
  CC      security/smack/smack_access.o
  CC      security/smack/smack_netfilter.o
  CC      security/selinux/ss/context.o
  CC      security/selinux/ss/ebitmap.o
  CC      security/selinux/ss/avtab.o
  CC      security/selinux/ss/sidtab.o
  CC      net/netlabel/netlabel_calipso.o
  CC      net/netlabel/netlabel_kapi.o
  CC      security/selinux/ss/mls.o
  CC      net/netlabel/netlabel_cipso_v4.o
  CC      net/netlabel/netlabel_domainhash.o
  CC      security/selinux/ss/conditional.o
  CC      security/smack/smackfs.o
  CC      security/selinux/netlabel.o
  CC      net/netlabel/netlabel_mgmt.o
  CC      net/ipv4/ip_options.o
  CC      net/netlabel/netlabel_unlabeled.o
  AR      net/netlabel/built-in.a
  CC      security/smack/smack_lsm.o
  CC [M]  net/ipv6/af_inet6.o
  AR      security/smack/built-in.a
  CC      security/selinux/ss/policydb.o
  CC      security/selinux/ss/services.o
  CC      security/selinux/hooks.o
  CC [M]  net/smc/smc_cdc.o
  CC [M]  net/ipv6/sysctl_net_ipv6.o
  AR      security/selinux/built-in.a
  CC [M]  net/smc/smc_ib.o
  AR      security/built-in.a
  CC [M]  net/smc/smc_wr.o
  CC [M]  net/smc/smc_sysctl.o
  CC [M]  net/smc/smc_close.o
  CC [M]  net/smc/smc_rx.o
  CC [M]  net/ipv6/exthdrs.o
  CC [M]  net/smc/smc_loopback.o
  CC [M]  net/smc/smc_tx.o
  CC      net/ipv4/sysctl_net_ipv4.o
  CC [M]  net/smc/smc_llc.o
  CC [M]  net/smc/af_smc.o
  CC [M]  net/ipv6/calipso.o
  CC      net/ipv4/cipso_ipv4.o
  CC [M]  net/smc/smc_core.o
  AR      net/ipv4/built-in.a
  LD [M]  net/ipv6/ipv6.o
  LD [M]  net/smc/smc.o
  AR      net/built-in.a
  CHK     kernel/kheaders_data.tar.xz
  GEN     kernel/kheaders_data.tar.xz
  CC [M]  kernel/kheaders.o
  AR      built-in.a
  AR      vmlinux.a
  LD      vmlinux.o
  OBJCOPY modules.builtin.modinfo
  GEN     modules.builtin
  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
  NM      System.map
  SORTTAB vmlinux
  RELOCS  arch/x86/boot/compressed/vmlinux.relocs
  RSTRIP  vmlinux
  GEN     modules.builtin.ranges
  CC      arch/x86/boot/version.o
  OBJCOPY arch/x86/boot/compressed/vmlinux.bin
  CC      arch/x86/boot/compressed/kaslr.o
  VOFFSET arch/x86/boot/compressed/../voffset.h
  LD [M]  kernel/kheaders.ko
  CC      arch/x86/boot/compressed/misc.o
  LD [M]  net/ipv6/ipv6.ko
  CC [M]  net/smc/smc.mod.o
  LD [M]  net/smc/smc.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
  OBJCOPY arch/x86/boot/vmlinux.bin
  AS      arch/x86/boot/header.o
  LD      arch/x86/boot/setup.elf
  OBJCOPY arch/x86/boot/setup.bin
  BUILD   arch/x86/boot/bzImage
Kernel: arch/x86/boot/bzImage is ready  (#7030)
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
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/smc/smc_cdc.o
  CC [M]  net/smc/smc_sysctl.o
  CC [M]  net/smc/smc_ib.o
  CC [M]  net/smc/smc_loopback.o
  CC [M]  net/smc/smc_wr.o
  CC [M]  net/smc/smc_close.o
  CC [M]  net/smc/smc_rx.o
  CC [M]  net/smc/smc_tx.o
  CC [M]  net/smc/smc_llc.o
  CC [M]  net/smc/af_smc.o
  CC [M]  net/smc/smc_core.o
  LD [M]  net/smc/smc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7030)
  CC [M]  net/smc/smc.mod.o
  LD [M]  net/smc/smc.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
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/smc/smc_cdc.o
  CC [M]  net/smc/smc_ib.o
  CC [M]  net/smc/smc_close.o
  CC [M]  net/smc/smc_wr.o
  CC [M]  net/smc/smc_rx.o
  CC [M]  net/smc/smc_loopback.o
  CC [M]  net/smc/smc_sysctl.o
  CC [M]  net/smc/smc_tx.o
  CC [M]  net/smc/smc_llc.o
  CC [M]  net/smc/af_smc.o
  CC [M]  net/smc/smc_core.o
  LD [M]  net/smc/smc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7030)
  CC [M]  net/smc/smc.mod.o
  LD [M]  net/smc/smc.ko