Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.JhZyflz3m2 and /tmp/tmp.Qq59gS8Xf3
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_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  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
  CHECK   lib/tests/module/test_kallsyms_a.c
  CHECK   lib/tests/module/test_kallsyms_b.c
  CHECK   lib/tests/module/test_kallsyms_c.c
  CHECK   lib/tests/module/test_kallsyms_d.c
  CC [M]  drivers/net/phy/micrel.o
  CHK     kernel/kheaders_data.tar.xz
  CHECK   ../drivers/net/phy/micrel.c
  CC [M]  net/hsr/hsr_device.o
  CHECK   ../net/hsr/hsr_device.c
  LD [M]  net/hsr/hsr.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#467)
  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
  CC [M]  net/hsr/hsr.mod.o
  LD [M]  net/hsr/hsr.ko
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  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
  CHECK   lib/tests/module/test_kallsyms_a.c
  CHECK   lib/tests/module/test_kallsyms_b.c
  CHECK   lib/tests/module/test_kallsyms_c.c
  CHECK   lib/tests/module/test_kallsyms_d.c
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/hsr/hsr_device.o
  CHECK   ../net/hsr/hsr_device.c
  LD [M]  net/hsr/hsr.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#467)
  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]  net/hsr/hsr.mod.o
  LD [M]  net/hsr/hsr.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_allmodconfig_warn'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_allmodconfig_warn/tools/objtool && make O=/home/nipa/net/wt-0/build_allmodconfig_warn subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  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
  CHECK   lib/tests/module/test_kallsyms_a.c
  CHECK   lib/tests/module/test_kallsyms_b.c
  CC [M]  lib/tests/module/test_kallsyms_d.o
  CHECK   lib/tests/module/test_kallsyms_c.c
  CHECK   lib/tests/module/test_kallsyms_d.c
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/hsr/hsr_device.o
  CHECK   ../net/hsr/hsr_device.c
  LD [M]  net/hsr/hsr.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#467)
  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]  net/hsr/hsr.mod.o
  LD [M]  net/hsr/hsr.ko