# git rev-parse -q --verify 687dec9b94599b19e218f89fd034d6449c3ff57c^{commit}
687dec9b94599b19e218f89fd034d6449c3ff57c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 687dec9b94599b19e218f89fd034d6449c3ff57c
# git clean -qxdf
# < git log -1
# commit 687dec9b94599b19e218f89fd034d6449c3ff57c
# Merge: 6674fdb25a9e ffafde478309
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Dec 11 12:25:32 2019 -0800
# 
#     Merge tag 'erofs-for-5.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
#     
#     Pull erofs fixes from Gao Xiang:
#      "Mainly address a regression reported by David recently observed
#       together with overlayfs due to the improper return value of
#       listxattr() without xattr. Update outdated expressions in document as
#       well.
#     
#       Summary:
#     
#        - Fix improper return value of listxattr() with no xattr
#     
#        - Keep up documentation with latest code"
#     
#     * tag 'erofs-for-5.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
#       erofs: update documentation
#       erofs: zero out when listxattr is called with no xattr
# < /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 687dec9b94599b19e218f89fd034d6449c3ff57c
# < make -s -j 32 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 32 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/arch/s390/kernel/unwind_bc.c: In function '__unwind_start':
/kisskb/src/arch/s390/kernel/unwind_bc.c:161:12: warning: 'ip' may be used uninitialized in this function [-Wuninitialized]
/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: 0:00:17.694058