Using -Oline -j 72 W=1 redirect to /tmp/tmp.xbWJLCbYYy and /tmp/tmp.Uvsj4fydp7
CC=ccache gcc
gcc (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3)
Tree base:
a747e02430df ("ipv6: avoid possible NULL deref in modify_prefix_route()")
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
  GEN     lib/tests/module/test_kallsyms_a.c
  CC [M]  net/can/j1939/transport.o
  GEN     lib/tests/module/test_kallsyms_b.c
  GEN     lib/tests/module/test_kallsyms_c.c
  GEN     lib/tests/module/test_kallsyms_d.c
  CC [M]  lib/tests/module/test_kallsyms_a.o
  LD [M]  net/can/j1939/can-j1939.o
  CC [M]  lib/tests/module/test_kallsyms_b.o
  CC [M]  lib/tests/module/test_kallsyms_c.o
  CC [M]  lib/tests/module/test_kallsyms_d.o
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/can/sun4i_can.o
  CC [M]  drivers/net/can/dev/dev.o
  CC [M]  drivers/net/can/spi/hi311x.o
  CC [M]  drivers/net/can/usb/ems_usb.o
  CC [M]  drivers/net/can/c_can/c_can_main.o
  CC [M]  drivers/net/can/usb/f81604.o
  CC [M]  drivers/net/can/ifi_canfd/ifi_canfd.o
  CC [M]  drivers/net/can/usb/gs_usb.o
  LD [M]  drivers/net/can/dev/can-dev.o
  CC [M]  drivers/net/can/m_can/m_can.o
  CC [M]  drivers/net/can/spi/mcp251xfd/mcp251xfd-tef.o
  CC [M]  drivers/net/can/sja1000/sja1000.o
  LD [M]  drivers/net/can/c_can/c_can.o
  LD [M]  drivers/net/can/spi/mcp251xfd/mcp251xfd.o
  CC [M]  drivers/net/phy/micrel.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1470)
  LD [M]  lib/tests/module/test_kallsyms_a.ko
  LD [M]  lib/tests/module/test_kallsyms_b.ko
  LD [M]  lib/tests/module/test_kallsyms_c.ko
  LD [M]  lib/tests/module/test_kallsyms_d.ko
  CC [M]  drivers/net/can/dev/can-dev.mod.o
  CC [M]  drivers/net/can/spi/mcp251xfd/mcp251xfd.mod.o
  CC [M]  drivers/net/can/spi/hi311x.mod.o
  CC [M]  drivers/net/can/usb/ems_usb.mod.o
  CC [M]  drivers/net/can/usb/f81604.mod.o
  CC [M]  drivers/net/can/usb/gs_usb.mod.o
  CC [M]  drivers/net/can/c_can/c_can.mod.o
  CC [M]  drivers/net/can/ifi_canfd/ifi_canfd.mod.o
  CC [M]  drivers/net/can/m_can/m_can.mod.o
  CC [M]  drivers/net/phy/micrel.mod.o
  CC [M]  drivers/net/can/sja1000/sja1000.mod.o
  CC [M]  drivers/net/can/sun4i_can.mod.o
  CC [M]  net/can/j1939/can-j1939.mod.o
  LD [M]  drivers/net/phy/micrel.ko
  LD [M]  drivers/net/can/dev/can-dev.ko
  LD [M]  drivers/net/can/spi/mcp251xfd/mcp251xfd.ko
  LD [M]  drivers/net/can/spi/hi311x.ko
  LD [M]  drivers/net/can/usb/ems_usb.ko
  LD [M]  drivers/net/can/usb/f81604.ko
  LD [M]  drivers/net/can/usb/gs_usb.ko
  LD [M]  drivers/net/can/c_can/c_can.ko
  LD [M]  drivers/net/can/ifi_canfd/ifi_canfd.ko
  LD [M]  drivers/net/can/m_can/m_can.ko
  LD [M]  drivers/net/can/sja1000/sja1000.ko
  LD [M]  drivers/net/can/sun4i_can.ko
  LD [M]  net/can/j1939/can-j1939.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
  GEN     lib/tests/module/test_kallsyms_a.c
  GEN     lib/tests/module/test_kallsyms_b.c
  GEN     lib/tests/module/test_kallsyms_c.c
  GEN     lib/tests/module/test_kallsyms_d.c
  CC [M]  lib/tests/module/test_kallsyms_a.o
  CC [M]  lib/tests/module/test_kallsyms_b.o
  CC [M]  lib/tests/module/test_kallsyms_c.o
  CC [M]  lib/tests/module/test_kallsyms_d.o
  CC [M]  drivers/net/phy/micrel.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1470)
  LD [M]  lib/tests/module/test_kallsyms_a.ko
  LD [M]  lib/tests/module/test_kallsyms_b.ko
  LD [M]  lib/tests/module/test_kallsyms_c.ko
  LD [M]  lib/tests/module/test_kallsyms_d.ko
  CC [M]  drivers/net/phy/micrel.mod.o
  LD [M]  drivers/net/phy/micrel.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
  GEN     lib/tests/module/test_kallsyms_a.c
  GEN     lib/tests/module/test_kallsyms_b.c
  GEN     lib/tests/module/test_kallsyms_c.c
  GEN     lib/tests/module/test_kallsyms_d.c
  CC [M]  lib/tests/module/test_kallsyms_a.o
  CC [M]  lib/tests/module/test_kallsyms_c.o
  CC [M]  lib/tests/module/test_kallsyms_b.o
  CC [M]  lib/tests/module/test_kallsyms_d.o
  CC [M]  drivers/net/phy/micrel.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1470)
  LD [M]  lib/tests/module/test_kallsyms_a.ko
  LD [M]  lib/tests/module/test_kallsyms_b.ko
  LD [M]  lib/tests/module/test_kallsyms_c.ko
  LD [M]  lib/tests/module/test_kallsyms_d.ko
  CC [M]  drivers/net/phy/micrel.mod.o
  LD [M]  drivers/net/phy/micrel.ko