Using -Oline -j 72 W=1 redirect to /tmp/tmp.Z6df7lOVT0 and /tmp/tmp.uGDip7OEY2
CC=ccache gcc
gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
Tree base:
afd8c2c9e2e2 ("Merge branch 'ipv6-f6i-fib6_siblings-and-rt-fib6_nsiblings-fixes'")
Baseline building the tree
make[1]: Entering directory '/home/nipa/net/wt-0/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/phy/smsc.o
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic_netdev.o
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1123)
  CC [M]  drivers/net/phy/smsc.mod.o
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic.mod.o
  LD [M]  drivers/net/phy/smsc.ko
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic_netdev.o
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1123)
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic.mod.o
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic_netdev.o
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1123)
  CC [M]  drivers/net/ethernet/meta/fbnic/fbnic.mod.o
  LD [M]  drivers/net/ethernet/meta/fbnic/fbnic.ko