# git rev-parse -q --verify 45dfb8a5659ad286c28fa59008271dbc4e5e3f2d^{commit}
45dfb8a5659ad286c28fa59008271dbc4e5e3f2d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 45dfb8a5659ad286c28fa59008271dbc4e5e3f2d
# git clean -qxdf
# < git log -1
# commit 45dfb8a5659ad286c28fa59008271dbc4e5e3f2d
# Merge: f419f031de14 35d0b389f3b2
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Jan 19 13:26:05 2021 -0800
# 
#     Merge tag 'task_work-2021-01-19' of git://git.kernel.dk/linux-block
#     
#     Pull task_work fix from Jens Axboe:
#      "The TIF_NOTIFY_SIGNAL change inadvertently removed the unconditional
#       task_work run we had in get_signal().
#     
#       This caused a regression for some setups, since we're relying on eg
#       ____fput() being run to close and release, for example, a pipe and
#       wake the other end.
#     
#       For 5.11, I prefer the simple solution of just reinstating the
#       unconditional run, even if it conceptually doesn't make much sense -
#       if you need that kind of guarantee, you should be using TWA_SIGNAL
#       instead of TWA_NOTIFY. But it's the trivial fix for 5.11, and would
#       ensure that other potential gotchas/assumptions for task_work don't
#       regress for 5.11.
#     
#       We're looking into further simplifying the task_work notifications for
#       5.12 which would resolve that too"
#     
#     * tag 'task_work-2021-01-19' of git://git.kernel.dk/linux-block:
#       task_work: unconditionally run task_work from get_signal()
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 45dfb8a5659ad286c28fa59008271dbc4e5e3f2d
# < make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allmodconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_KCOV=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n
# Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n
# Added to kconfig CONFIG_UML_NET=n
# Added to kconfig CONFIG_UML_NET_ETHERTAP=n
# Added to kconfig CONFIG_UML_NET_TUNTAP=n
# Added to kconfig CONFIG_UML_NET_SLIP=n
# Added to kconfig CONFIG_UML_NET_DAEMON=n
# Added to kconfig CONFIG_UML_NET_VDE=n
# Added to kconfig CONFIG_UML_NET_MCAST=n
# Added to kconfig CONFIG_UML_NET_PCAP=n
# Added to kconfig CONFIG_UML_NET_SLIRP=n
# Added to kconfig CONFIG_GCOV_KERNEL=n
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# < make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
.config:4497:warning: override: reassigning to symbol GCC_PLUGIN_CYC_COMPLEXITY
.config:4499:warning: override: reassigning to symbol GCC_PLUGIN_LATENT_ENTROPY
.config:4503:warning: override: reassigning to symbol UML_NET_ETHERTAP
.config:4505:warning: override: reassigning to symbol UML_NET_SLIP
.config:4508:warning: override: reassigning to symbol UML_NET_MCAST
.config:4510:warning: override: reassigning to symbol UML_NET_SLIRP
# make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 

Auto-detecting system features:
...                        libelf: [ OFF ]
...                          zlib: [ OFF ]
...                           bpf: [ on  ]

No libelf found
make[5]: *** [Makefile:287: elfdep] Error 1
make[4]: *** [/kisskb/src/kernel/bpf/preload/Makefile:8: kernel/bpf/preload/libbpf.a] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf/preload] Error 2
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: kernel/bpf] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1805: kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
/kisskb/src/drivers/rtc/rtc-rx6110.c:314:12: warning: 'rx6110_probe' defined but not used [-Wunused-function]
 static int rx6110_probe(struct rx6110_data *rx6110, struct device *dev)
            ^
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=um O=/kisskb/build/linus_um-allmodconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-allmodconfig_um-x86_64
# Build took: 0:06:25.315787