Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.JgnDGub8kK and /tmp/tmp.e2ckkF8ZN7
CC=ccache gcc
gcc (GCC) 15.2.1 20251022 (Red Hat 15.2.1-3)
Tree base:
01cc760632b8 ("Documentation: ARCnet: Update obsolete contact info")
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
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/ppp/ppp_generic.o
  CC [M]  drivers/net/sungem_phy.o
  CHECK   ../drivers/net/ppp/ppp_generic.c
  CHECK   ../drivers/net/sungem_phy.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7780)
  LD [M]  drivers/net/sungem_phy.ko
  CC [M]  drivers/net/ppp/ppp_generic.mod.o
  LD [M]  drivers/net/ppp/ppp_generic.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
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/sungem_phy.o
  CHECK   ../drivers/net/sungem_phy.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7780)
  LD [M]  drivers/net/sungem_phy.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
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/sungem_phy.o
  CHECK   ../drivers/net/sungem_phy.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#7780)
  LD [M]  drivers/net/sungem_phy.ko