# git rev-parse -q --verify b9959c7a347d6adbb558fba7e36e9fef3cba3b07^{commit}
b9959c7a347d6adbb558fba7e36e9fef3cba3b07
already have revision, skipping fetch
# git checkout -q -f -B kisskb b9959c7a347d6adbb558fba7e36e9fef3cba3b07
# git clean -qxdf
# < git log -1
# commit b9959c7a347d6adbb558fba7e36e9fef3cba3b07
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Oct 18 18:41:16 2019 -0400
# 
#     filldir[64]: remove WARN_ON_ONCE() for bad directory entries
#     
#     This was always meant to be a temporary thing, just for testing and to
#     see if it actually ever triggered.
#     
#     The only thing that reported it was syzbot doing disk image fuzzing, and
#     then that warning is expected.  So let's just remove it before -rc4,
#     because the extra sanity testing should probably go to -stable, but we
#     don't want the warning to do so.
#     
#     Reported-by: syzbot+3031f712c7ad5dd4d926@syzkaller.appspotmail.com
#     Fixes: 8a23eb804ca4 ("Make filldir[64]() verify the directory entry filename is valid")
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 b9959c7a347d6adbb558fba7e36e9fef3cba3b07
# < make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  allnoconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_s390-allnoconfig_s390x
# Build took: 0:00:17.350242