Using -Oline -j 96 W=1 redirect to /tmp/tmp.p3JXtQIMyi and /tmp/tmp.wUaAkqHUlp
LLVM=1 cc="ccache clang"
clang version 21.1.6 (Fedora 21.1.6-1.fc43)
Tree base:
45d100ee0d6e ("net: stmmac: dwmac: Disable flushing frames on Rx Buffer Unavailable")
Baseline building the tree
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/dsa/conduit.o
  CC [M]  net/dsa/dsa.o
  CC [M]  net/dsa/tag.o
  CC [M]  net/dsa/tag_8021q.o
  CC [M]  net/dsa/user.o
  CC [M]  net/dsa/tag_ar9331.o
  CC [M]  net/dsa/tag_brcm.o
  CC [M]  net/dsa/tag_dsa.o
  CC [M]  net/dsa/tag_gswip.o
  CC [M]  net/dsa/tag_hellcreek.o
  CC [M]  net/dsa/tag_ksz.o
  CC [M]  net/dsa/tag_lan9303.o
  CC [M]  net/dsa/tag_mtk.o
  CC [M]  net/dsa/tag_mxl-gsw1xx.o
  CC [M]  net/dsa/tag_none.o
  CC [M]  net/dsa/tag_ocelot.o
  CC [M]  net/dsa/tag_ocelot_8021q.o
  CC [M]  net/dsa/tag_qca.o
  CC [M]  net/dsa/tag_rtl4_a.o
  CC [M]  net/dsa/tag_rtl8_4.o
  CC [M]  net/dsa/tag_rzn1_a5psw.o
  CC [M]  net/dsa/tag_sja1105.o
  CC [M]  net/dsa/tag_trailer.o
  CC [M]  net/dsa/tag_vsc73xx_8021q.o
  CC [M]  net/dsa/tag_xrs700x.o
  CC [M]  net/dsa/tag_yt921x.o
  LD [M]  net/dsa/dsa_core.o
  CC [M]  net/l2tp/l2tp_core.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#400)
  CC [M]  net/dsa/dsa_core.mod.o
  CC [M]  net/dsa/tag_ar9331.mod.o
  CC [M]  net/dsa/tag_brcm.mod.o
  CC [M]  net/dsa/tag_dsa.mod.o
  CC [M]  net/dsa/tag_gswip.mod.o
  CC [M]  net/dsa/tag_hellcreek.mod.o
  CC [M]  net/dsa/tag_ksz.mod.o
  CC [M]  net/dsa/tag_lan9303.mod.o
  CC [M]  net/dsa/tag_mtk.mod.o
  CC [M]  net/dsa/tag_mxl-gsw1xx.mod.o
  CC [M]  net/dsa/tag_none.mod.o
  CC [M]  net/dsa/tag_ocelot.mod.o
  CC [M]  net/dsa/tag_ocelot_8021q.mod.o
  CC [M]  net/dsa/tag_qca.mod.o
  CC [M]  net/dsa/tag_rtl4_a.mod.o
  CC [M]  net/dsa/tag_rtl8_4.mod.o
  CC [M]  net/dsa/tag_rzn1_a5psw.mod.o
  CC [M]  net/dsa/tag_sja1105.mod.o
  CC [M]  net/dsa/tag_trailer.mod.o
  CC [M]  net/dsa/tag_vsc73xx_8021q.mod.o
  CC [M]  net/dsa/tag_xrs700x.mod.o
  CC [M]  net/dsa/tag_yt921x.mod.o
  LD [M]  net/dsa/dsa_core.ko
  LD [M]  net/dsa/tag_ar9331.ko
  LD [M]  net/dsa/tag_brcm.ko
  LD [M]  net/dsa/tag_dsa.ko
  LD [M]  net/dsa/tag_gswip.ko
  LD [M]  net/dsa/tag_hellcreek.ko
  LD [M]  net/dsa/tag_ksz.ko
  LD [M]  net/dsa/tag_lan9303.ko
  LD [M]  net/dsa/tag_mtk.ko
  LD [M]  net/dsa/tag_mxl-gsw1xx.ko
  LD [M]  net/dsa/tag_none.ko
  LD [M]  net/dsa/tag_ocelot.ko
  LD [M]  net/dsa/tag_ocelot_8021q.ko
  LD [M]  net/dsa/tag_qca.ko
  LD [M]  net/dsa/tag_rtl4_a.ko
  LD [M]  net/dsa/tag_rtl8_4.ko
  LD [M]  net/dsa/tag_rzn1_a5psw.ko
  LD [M]  net/dsa/tag_sja1105.ko
  LD [M]  net/dsa/tag_trailer.ko
  LD [M]  net/dsa/tag_vsc73xx_8021q.ko
  LD [M]  net/dsa/tag_xrs700x.ko
  LD [M]  net/dsa/tag_yt921x.ko
  CC [M]  net/ipv6/ipv6.mod.o
  LD [M]  net/ipv6/ipv6.ko
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko
Building the tree before the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  INSTALL libsubcmd_headers
  CALL    ../scripts/checksyscalls.sh
  CC [M]  net/l2tp/l2tp_core.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#400)
  CC [M]  net/ipv6/ipv6.mod.o
  LD [M]  net/ipv6/ipv6.ko
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/l2tp/l2tp_core.ko
Building the tree with the patch
make[1]: Entering directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/srv/nipa-poller/net-next/wt-0/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  DESCEND objtool
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CC [M]  net/l2tp/l2tp_core.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#400)
  CC [M]  net/ipv6/ipv6.mod.o
  CC [M]  net/l2tp/l2tp_core.mod.o
  LD [M]  net/ipv6/ipv6.ko
  LD [M]  net/l2tp/l2tp_core.ko