Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.pMi5zIKCYr and /tmp/tmp.llSU8nMuSt
CC=ccache gcc
gcc (GCC) 15.2.1 20250808 (Red Hat 15.2.1-1)
Tree base:
18a7e218cfcd ("Merge tag 'net-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
  HOSTCC  scripts/basic/fixdep
#
# 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
  DESCEND objtool
  HOSTCC  scripts/basic/fixdep
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.o
  CHECK   ../drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c
  LD [M]  drivers/net/ethernet/broadcom/asp2/bcm-asp.o
  CC [M]  drivers/net/ethernet/fealnx.o
  CHECK   ../drivers/net/ethernet/fealnx.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#6914)
  CC [M]  drivers/net/ethernet/broadcom/asp2/bcm-asp.mod.o
  LD [M]  drivers/net/ethernet/fealnx.ko
  LD [M]  drivers/net/ethernet/broadcom/asp2/bcm-asp.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
  HOSTCC  scripts/basic/fixdep
#
# 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
  DESCEND objtool
  HOSTCC  scripts/basic/fixdep
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/ethernet/fealnx.o
  CHECK   ../drivers/net/ethernet/fealnx.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#6914)
  LD [M]  drivers/net/ethernet/fealnx.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-0/build_allmodconfig_warn'
  GEN     Makefile
  HOSTCC  scripts/basic/fixdep
#
# 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
  DESCEND objtool
  HOSTCC  scripts/basic/fixdep
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/ethernet/fealnx.o
  CHECK   ../drivers/net/ethernet/fealnx.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#6914)
  LD [M]  drivers/net/ethernet/fealnx.ko