Using -Oline -j 72 W=1 redirect to /tmp/tmp.0rPBav3cdY and /tmp/tmp.tM0kreVSUs
CC=ccache gcc
gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
Tree base:
b993ea46b3b6 ("atm: clip: prevent NULL deref in clip_push()")
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]  net/atm/clip.o
  CC [M]  net/sched/sch_netem.o
  CC [M]  drivers/net/virtio_net.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#880)
  CC [M]  drivers/net/virtio_net.mod.o
  CC [M]  net/atm/clip.mod.o
  LD [M]  drivers/net/virtio_net.ko
  LD [M]  net/atm/clip.ko
  CC [M]  net/sched/sch_netem.mod.o
  LD [M]  net/sched/sch_netem.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
  CC [M]  net/sched/sch_netem.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#880)
  CC [M]  net/sched/sch_netem.mod.o
  LD [M]  net/sched/sch_netem.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
  CC [M]  net/sched/sch_netem.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#880)
  CC [M]  net/sched/sch_netem.mod.o
  LD [M]  net/sched/sch_netem.ko