Using -Oline -j 72 W=1 redirect to /tmp/tmp.THukq7DyxD and /tmp/tmp.2adelfU6vl
CC=ccache gcc
gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
Tree base:
beead7eea896 ("net: ipv4: guard ip_mr_output() with rcu")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/sfc/siena/farch.o
  CC [M]  drivers/net/ethernet/sfc/siena/siena.o
  CC [M]  drivers/net/ethernet/sfc/siena/efx.o
  CC [M]  drivers/net/ethernet/sfc/siena/efx_common.o
  CC [M]  drivers/net/ethernet/sfc/siena/efx_channels.o
  CC [M]  drivers/net/ethernet/sfc/siena/nic.o
  CC [M]  drivers/net/ethernet/sfc/siena/tx.o
  CC [M]  drivers/net/ethernet/sfc/siena/tx_common.o
  CC [M]  drivers/net/ethernet/sfc/siena/rx.o
  CC [M]  drivers/net/ethernet/sfc/siena/rx_common.o
  CC [M]  drivers/net/ethernet/sfc/siena/selftest.o
  CC [M]  drivers/net/ethernet/sfc/siena/ethtool.o
  CC [M]  drivers/net/ethernet/sfc/siena/ethtool_common.o
  CC [M]  drivers/net/ethernet/sfc/siena/ptp.o
  CC [M]  drivers/net/ethernet/sfc/siena/mcdi.o
  CC [M]  drivers/net/ethernet/sfc/siena/mcdi_port.o
  CC [M]  drivers/net/ethernet/sfc/siena/mcdi_mon.o
  CC [M]  drivers/net/ethernet/sfc/siena/mcdi_port_common.o
  CC [M]  drivers/net/ethernet/sfc/siena/mtd.o
  CC [M]  drivers/net/ethernet/sfc/siena/siena_sriov.o
  LD [M]  drivers/net/ethernet/sfc/siena/sfc-siena.o
  CC      net/ipv4/ipmr.o
  CC [M]  drivers/net/thunderbolt/main.o
  AR      net/ipv4/built-in.a
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.o
  AR      net/built-in.a
  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
  CC [M]  drivers/net/ethernet/sfc/siena/sfc-siena.mod.o
  CC [M]  drivers/net/thunderbolt/thunderbolt_net.mod.o
  LD [M]  drivers/net/ethernet/sfc/siena/sfc-siena.ko
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.ko
  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
  RSTRIP  vmlinux
  GEN     modules.builtin.ranges
  CC      arch/x86/boot/version.o
  OBJCOPY arch/x86/boot/compressed/vmlinux.bin
  RELOCS  arch/x86/boot/compressed/vmlinux.relocs
  VOFFSET arch/x86/boot/compressed/../voffset.h
  CC      arch/x86/boot/compressed/misc.o
  CC      arch/x86/boot/compressed/kaslr.o
  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  (#3450)
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/thunderbolt/main.o
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#3450)
  CC [M]  drivers/net/thunderbolt/thunderbolt_net.mod.o
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/thunderbolt/main.o
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#3450)
  CC [M]  drivers/net/thunderbolt/thunderbolt_net.mod.o
  LD [M]  drivers/net/thunderbolt/thunderbolt_net.ko