Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.iOZhbtt4wp and /tmp/tmp.x9LKz7BwRd
CC=ccache gcc
gcc (GCC) 14.1.1 20240507 (Red Hat 14.1.1-1)
Tree base:
15f0383dc616 ("l2tp: remove unused list_head member in l2tp_tunnel")
Skip baseline build, not the first patch
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
  CC [M]  net/l2tp/l2tp_ppp.o
  CC [M]  net/l2tp/l2tp_ip.o
  CC [M]  net/l2tp/l2tp_netlink.o
  CC [M]  net/l2tp/l2tp_eth.o
  CC [M]  net/l2tp/l2tp_debugfs.o
  CC [M]  net/l2tp/l2tp_ip6.o
  CHECK   ../net/l2tp/l2tp_ppp.c
  CHECK   ../net/l2tp/l2tp_ip.c
  CHECK   ../net/l2tp/l2tp_netlink.c
  CHECK   ../net/l2tp/l2tp_eth.c
  CHECK   ../net/l2tp/l2tp_core.c
  CHECK   ../net/l2tp/l2tp_debugfs.c
  CHECK   ../net/l2tp/l2tp_ip6.c
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2913)
  LD [M]  net/l2tp/l2tp_core.ko
  LD [M]  net/l2tp/l2tp_ppp.ko
  LD [M]  net/l2tp/l2tp_ip.ko
  LD [M]  net/l2tp/l2tp_netlink.ko
  LD [M]  net/l2tp/l2tp_eth.ko
  LD [M]  net/l2tp/l2tp_debugfs.ko
  LD [M]  net/l2tp/l2tp_ip6.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
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/l2tp/l2tp_debugfs.o
  CC [M]  net/l2tp/l2tp_eth.o
  CC [M]  net/l2tp/l2tp_ip.o
  CC [M]  net/l2tp/l2tp_netlink.o
  CHECK   ../net/l2tp/l2tp_debugfs.c
  CHECK   ../net/l2tp/l2tp_eth.c
  CC [M]  net/l2tp/l2tp_ppp.o
  CC [M]  net/l2tp/l2tp_ip6.o
  CHECK   ../net/l2tp/l2tp_ip.c
  CHECK   ../net/l2tp/l2tp_netlink.c
  CHECK   ../net/l2tp/l2tp_ppp.c
  CHECK   ../net/l2tp/l2tp_ip6.c
  CC [M]  net/l2tp/l2tp_core.o
  CHECK   ../net/l2tp/l2tp_core.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2913)
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko
  CC [M]  net/l2tp/l2tp_ppp.mod.o
  LD [M]  net/l2tp/l2tp_ppp.ko
  CC [M]  net/l2tp/l2tp_ip.mod.o
  CC [M]  net/l2tp/l2tp_netlink.mod.o
  CC [M]  net/l2tp/l2tp_eth.mod.o
  CC [M]  net/l2tp/l2tp_debugfs.mod.o
  LD [M]  net/l2tp/l2tp_ip.ko
  LD [M]  net/l2tp/l2tp_netlink.ko
  CC [M]  net/l2tp/l2tp_ip6.mod.o
  LD [M]  net/l2tp/l2tp_eth.ko
  LD [M]  net/l2tp/l2tp_debugfs.ko
  LD [M]  net/l2tp/l2tp_ip6.ko