Re: A head buildworld race visible in the ci.freebsd.org build history

On 6/15/2018 10:55 PM, Mark Millard wrote:
> In watching ci.freebsd.org builds I've seen a notable
> number of one time failures, such as (example from
> powerpc64):
> 
> --- all_subdir_lib/libufs ---
> ranlib -D libufs.a
> ranlib: fatal: Failed to open 'libufs.a'
> *** [libufs.a] Error code 70
> 
> where the next build works despite the change being
> irrelevant to whatever ranlib complained about.
> 
> Other builds failed similarly:
> 
> --- all_subdir_lib/libbsm ---
> ranlib -D libbsm_p.a
> ranlib: fatal: Failed to open 'libbsm_p.a'
> *** [libbsm_p.a] Error code 70
> 
> and:
> 
> --- kerberos5/lib__L ---
> ranlib -D libgssapi_spnego_p.a
> --- libgssapi_spnego.a ---
> ranlib -D libgssapi_spnego.a
> --- libgssapi_spnego_p.a ---
> ranlib: fatal: Failed to open 'libgssapi_spnego_p.a'
> *** [libgssapi_spnego_p.a] Error code 70
> 
> and so on.
> 
> 
> It is not limited to powerpc64. For example, for aarch64
> there are:
> 
> --- libpam_exec.a ---
> building static pam_exec library
> ar -crD libpam_exec.a `NM='nm' NMFLAGS=''  lorder pam_exec.o  | tsort -q` 
> ranlib -D libpam_exec.a
> ranlib: fatal: Failed to open 'libpam_exec.a'
> *** [libpam_exec.a] Error code 70
> 
> and:
> 
> --- all_subdir_lib/libusb ---
> ranlib -D libusb.a
> ranlib: fatal: Failed to open 'libusb.a'
> *** [libusb.a] Error code 70
> 
> and:
> 
> --- all_subdir_lib/libbsnmp ---
> ranlib: fatal: Failed to open 'libbsnmp.a'
> --- all_subdir_lib/ncurses ---
> --- all_subdir_lib/ncurses/panelw ---
> --- panel.pico ---
> --- all_subdir_lib/libbsnmp ---
> *** [libbsnmp.a] Error code 70
> 
> 
> Even amd64 gets such:
> 
> --- libpcap.a ---
> ranlib -D libpcap.a
> ranlib: fatal: Failed to open 'libpcap.a'
> *** [libpcap.a] Error code 70
> 
> and:
> 
> 
> --- libkafs5.a ---
> ranlib: fatal: Failed to open 'libkafs5.a'
> --- libkafs5_p.a ---
> ranlib: fatal: Failed to open 'libkafs5_p.a'
> --- cddl/lib__L ---
> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/lua/lbaselib.c:60:26: note: include the header <ctype.h> or explicitly provide a declaration for 'toupper'
> --- kerberos5/lib__L ---
> *** [libkafs5_p.a] Error code 70
> 
> make[5]: stopped in /usr/src/kerberos5/lib/libkafs5
> --- libkafs5.a ---
> *** [libkafs5.a] Error code 70
> 
> and:
> 
> 
> --- lib__L ---
> ranlib -D libclang_rt.asan_cxx-i386.a
> ranlib: fatal: Failed to open 'libclang_rt.asan_cxx-i386.a'
> *** [libclang_rt.asan_cxx-i386.a] Error code 70
> 
> 
> (Notice the variability in what .a the ranlib's fail for.)
> 
> 
> 
> 
> 


I looked at this a few days ago and don't believe it's actually a build
race. I think there is something wrong with the ar/ranlib on that system
or something else. I've found no evidence of concurrent building of the
.a files in question.


-- 
Regards,
Bryan Drewery