Hi Al,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal.git master
head:   aad206fddcb7642e6777b1b992645299b7557ded
commit: 97977a049b19339b1906e1862ed65ad469c01168 [15/63] s390: fold execve_tail() into start_thread(), convert to generic sys_execve()
config: s390-allmodconfig (attached as .config)

All related error/warning messages:

arch/s390/built-in.o: In function `sys32_execve_wrapper':
(.text+0x315d2): undefined reference to `compat_sys_execve'

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu <wfg@linux.intel.com>                     Intel Corporation