Using -Oline -j 72 W=1 redirect to /tmp/tmp.YFDprDmDaf and /tmp/tmp.LyYoqk3MOJ
LLVM=1 cc=clang
clang version 19.1.5 (Fedora 19.1.5-1.fc41)
Tree base:
5f76823d81fd ("vrf: use RCU protection in l3mdev_l3_out()")
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_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/ipv6/ndisc.o
  LD [M]  net/ipv6/ipv6.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2026)
  LD [M]  net/ipv6/ipv6.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net/wt-0/build_clang/tools/objtool && make O=/home/nipa/net/wt-0/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  net/ipv6/ndisc.o
  LD [M]  net/ipv6/ipv6.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#2026)
  CC [M]  net/ipv6/ipv6.mod.o
  LD [M]  net/ipv6/ipv6.ko