Using -Oline -j 72 W=1 redirect to /tmp/tmp.dCm3dymCcH and /tmp/tmp.JQSCMju7QW
LLVM=1 cc=clang
clang version 18.1.6 (Fedora 18.1.6-3.fc40)
Tree base:
9410645520e9 ("Merge tag 'net-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-0/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/mac802154/scan.o
  LD [M]  net/mac802154/mac802154.o
  CC [M]  drivers/net/ethernet/sfc/tx_tso.o
  CC [M]  drivers/net/ethernet/sfc/nic.o
  CC [M]  drivers/net/ethernet/sfc/mtd.o
  CC [M]  drivers/net/ethernet/sfc/sriov.o
  CC [M]  drivers/net/ethernet/sfc/ef100_rx.o
  CC [M]  drivers/net/ethernet/sfc/ef100.o
  CC [M]  drivers/net/ethernet/sfc/rx.o
  CC [M]  drivers/net/ethernet/sfc/ef100_ethtool.o
  CC [M]  drivers/net/ethernet/sfc/tx_common.o
  CC [M]  drivers/net/ethernet/sfc/ef100_netdev.o
  CC [M]  drivers/net/ethernet/sfc/efx.o
  CC [M]  drivers/net/ethernet/sfc/efx_common.o
  CC [M]  drivers/net/ethernet/sfc/mcdi_port.o
  CC [M]  drivers/net/ethernet/sfc/ethtool_common.o
  CC [M]  drivers/net/ethernet/sfc/ef10_sriov.o
  CC [M]  drivers/net/ethernet/sfc/selftest.o
  CC [M]  drivers/net/ethernet/sfc/mcdi_port_common.o
  CC [M]  drivers/net/ethernet/sfc/ef100_tx.o
  CC [M]  drivers/net/ethernet/sfc/tc_counters.o
  CC [M]  drivers/net/ethernet/sfc/ethtool.o
  CC [M]  drivers/net/ethernet/sfc/efx_channels.o
  CC [M]  drivers/net/ethernet/sfc/tc_conntrack.o
  CC [M]  drivers/net/ethernet/sfc/ef100_sriov.o
  CC [M]  drivers/net/ethernet/sfc/mcdi_mon.o
  CC [M]  drivers/net/ethernet/sfc/efx_devlink.o
  CC [M]  drivers/net/ethernet/sfc/rx_common.o
  CC [M]  drivers/net/ethernet/sfc/ef100_nic.o
  CC [M]  drivers/net/ethernet/sfc/tx.o
  CC [M]  drivers/net/ethernet/sfc/mcdi_functions.o
  CC [M]  drivers/net/ethernet/sfc/mcdi_filters.o
  CC [M]  drivers/net/ethernet/sfc/tc_bindings.o
  CC [M]  drivers/net/ethernet/sfc/ef100_rep.o
  CC [M]  drivers/net/ethernet/sfc/ptp.o
  CC [M]  drivers/net/ethernet/sfc/mcdi.o
  CC [M]  drivers/net/ethernet/sfc/tc_encap_actions.o
  CC [M]  drivers/net/ethernet/sfc/ef10.o
  CC [M]  drivers/net/ethernet/sfc/tc.o
  CC [M]  drivers/net/ethernet/sfc/mae.o
  LD [M]  drivers/net/ethernet/sfc/sfc.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#5205)
  CC [M]  drivers/net/ethernet/sfc/sfc.mod.o
  LD [M]  drivers/net/ethernet/sfc/sfc.ko
  CC [M]  net/mac802154/mac802154.mod.o
  LD [M]  net/mac802154/mac802154.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-0/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/mac802154/scan.o
  LD [M]  net/mac802154/mac802154.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#5205)
  CC [M]  net/mac802154/mac802154.mod.o
  LD [M]  net/mac802154/mac802154.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-0/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/mac802154/scan.o
  LD [M]  net/mac802154/mac802154.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#5205)
  CC [M]  net/mac802154/mac802154.mod.o
  LD [M]  net/mac802154/mac802154.ko