Using -Oline -j 72 W=1 redirect to /tmp/tmp.KiAuMIwf4j and /tmp/tmp.PalIRFfLt6
LLVM=1 cc=clang
clang version 18.1.6 (Fedora 18.1.6-3.fc40)
Tree base:
16f3a28cf5f8 ("net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/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/netfilter/nft_set_pipapo_avx2.o
  CC [M]  net/sched/act_ct.o
  LD [M]  net/netfilter/nf_tables.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_idc.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_controlq.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_fw_update.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vlan_mode.o
  CC [M]  drivers/net/phy/micrel.o
  CC [M]  drivers/net/ethernet/intel/ice/devlink/devlink_port.o
  CC [M]  drivers/net/ethernet/intel/ice/devlink/devlink.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_hwmon.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vsi_vlan_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_nvm.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_arfs.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_dcb_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_ddp.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_irq.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vf_vsi_vlan_ops.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vsi_vlan_ops.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_pf_vsi_vlan_ops.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_txrx_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_base.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_fwlog.o
  CC [M]  drivers/infiniband/hw/irdma/main.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_common.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_fltr.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_debugfs.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_virtchnl_allowlist.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_repr.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vf_mbx.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_dcb_nl.o
  LD [M]  drivers/infiniband/hw/irdma/irdma.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_fdir.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_gnss.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_ptp.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_dcb.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_vf_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_tc_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_lag.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_flow.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_xsk.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_eswitch.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_ethtool_fdir.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_sriov.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_ethtool.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_dpll.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_sched.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_virtchnl.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_eswitch_br.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_flex_pipe.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_lib.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_txrx.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_switch.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_ptp_hw.o
  CC [M]  drivers/net/ethernet/mediatek/mtk_eth_soc.o
  LD [M]  drivers/net/ethernet/mediatek/mtk_eth.o
  CC [M]  drivers/net/ethernet/intel/ice/ice_main.o
  LD [M]  drivers/net/ethernet/intel/ice/ice.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#479)
  CC [M]  drivers/net/phy/micrel.mod.o
  CC [M]  drivers/net/ethernet/intel/ice/ice.mod.o
  CC [M]  drivers/net/ethernet/mediatek/mtk_eth.mod.o
  CC [M]  drivers/infiniband/hw/irdma/irdma.mod.o
  LD [M]  drivers/net/phy/micrel.ko
  LD [M]  drivers/net/ethernet/intel/ice/ice.ko
  LD [M]  drivers/net/ethernet/mediatek/mtk_eth.ko
  LD [M]  drivers/infiniband/hw/irdma/irdma.ko
  CC [M]  net/sched/act_ct.mod.o
  LD [M]  net/sched/act_ct.ko
  CC [M]  net/netfilter/nf_tables.mod.o
  LD [M]  net/netfilter/nf_tables.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/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/sched/act_ct.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#479)
  CC [M]  net/sched/act_ct.mod.o
  LD [M]  net/sched/act_ct.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/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/sched/act_ct.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#479)
  CC [M]  net/sched/act_ct.mod.o
  LD [M]  net/sched/act_ct.ko