Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.uDUOjwSVJu and /tmp/tmp.7PfzraUcw4
CC=ccache gcc
gcc (GCC) 14.2.1 20240801 (Red Hat 14.2.1-1)
Tree base:
55ddb6c5a3ae ("net: stmmac: drop the ethtool begin() callback")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net-next/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/phy/microchip_t1s.o
  CHECK   ../drivers/net/phy/microchip_t1s.c
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/l2tp/l2tp_core.o
  CHECK   ../net/l2tp/l2tp_core.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#4695)
  CC [M]  drivers/net/phy/microchip_t1s.mod.o
  LD [M]  drivers/net/phy/microchip_t1s.ko
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net-next/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/l2tp/l2tp_core.o
  CHECK   ../net/l2tp/l2tp_core.c
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#4695)
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net-next/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/l2tp/l2tp_core.o
  CHK     kernel/kheaders_data.tar.xz
  CHECK   ../net/l2tp/l2tp_core.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#4695)
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko