Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.NnG660C9n6 and /tmp/tmp.Nz7TlLmrJ9
CC=ccache gcc
gcc (GCC) 14.2.1 20240801 (Red Hat 14.2.1-1)
Tree base:
9c5af2d7dfe1 ("Merge tag 'nf-24-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/mpls/mpls_iptunnel.o
  CHECK   ../net/mpls/mpls_iptunnel.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#671)
  CC [M]  net/mpls/mpls_iptunnel.mod.o
  LD [M]  net/mpls/mpls_iptunnel.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/mpls/mpls_iptunnel.o
  CHECK   ../net/mpls/mpls_iptunnel.c
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#671)
  CC [M]  net/mpls/mpls_iptunnel.mod.o
  LD [M]  net/mpls/mpls_iptunnel.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/mpls/mpls_iptunnel.o
  CHECK   ../net/mpls/mpls_iptunnel.c
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#671)
  CC [M]  net/mpls/mpls_iptunnel.mod.o
  LD [M]  net/mpls/mpls_iptunnel.ko