# git rev-parse -q --verify 7de7de7ca0ae0fc70515ee3154af33af75edae2c^{commit}
7de7de7ca0ae0fc70515ee3154af33af75edae2c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7de7de7ca0ae0fc70515ee3154af33af75edae2c
# git clean -qxdf
# < git log -1
# commit 7de7de7ca0ae0fc70515ee3154af33af75edae2c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Dec 15 19:50:23 2019 -0800
# 
#     Fix root mounting with no mount options
#     
#     The "trivial conversion" in commit cccaa5e33525 ("init: use do_mount()
#     instead of ksys_mount()") was totally broken, since it didn't handle the
#     case of a NULL mount data pointer.  And while I had "tested" it (and
#     presumably Dominik had too) that bug was hidden by me having options.
#     
#     Cc: Dominik Brodowski <linux@dominikbrodowski.net>
#     Cc: Arnd Bergmann <arnd@arndb.de>
#     Reported-by: Ondřej Jirman <megi@xff.cz>
#     Reported-by: Guenter Roeck <linux@roeck-us.net>
#     Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
#     Reported-and-tested-by: Borislav Petkov <bp@suse.de>
#     Tested-by: Chris Clayton <chris2553@googlemail.com>
#     Tested-by: Eric Biggers <ebiggers@kernel.org>
#     Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
#     Tested-by: Guido Günther <agx@sigxcpu.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version
# < git log --format=%s --max-count=1 7de7de7ca0ae0fc70515ee3154af33af75edae2c
# < make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  defconfig
# make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:30.186661