Using -Oline -j 72 W=1 C=1 redirect to /tmp/tmp.SaIAEwv78y and /tmp/tmp.RBZ7RmhJB7
CC=ccache gcc
gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
Tree base:
07c273919c08 ("can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB")
Skip baseline build, not the first patch and no Kconfig updates
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
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/can/rcar/rcar_can.o
  CHECK   ../drivers/net/can/rcar/rcar_can.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1407)
  LD [M]  drivers/net/can/rcar/rcar_can.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
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/can/rcar/rcar_can.o
  CHECK   ../drivers/net/can/rcar/rcar_can.c
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#1407)
  CC [M]  drivers/net/can/rcar/rcar_can.mod.o
  LD [M]  drivers/net/can/rcar/rcar_can.ko