Re: [cmake-developers] KWSys build warnings on the "merlin" platform
The promised attachment concerning how my CMake test is configured. __ Alan W. Irwin Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __ Linux-powered Science __ my_dashboard.cmake.gz Description: application/gtar-compressed -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake-developers
Re: [cmake-developers] KWSys build warnings on the "merlin" platform
On 2018-10-23 21:20+0200 Rolf Eike Beer wrote: [...] [These segfaults are] intentional, there are test binaries that segfault to test if that is properly detected by the signal handler/debug/ctest/whatever code. OK, and thanks for that info. I have therefore changed the subject line appropriately. I don't notice any other platform on KWSys dashboard that also has the 8 build warnings, but it is likely my fairly recent gcc compiler (Debian Buster ccache and gcc/g++ 8.2.0) is more sensitive to problematic code in KWSys than prior versions of the gcc compiler suite. I run gcc 8.2 on castor, but I don't know why this does not trigger these warnings. It's possible it is the gcc/g++ flags I am using, but in any case someone knowledgeable should look at those build warnings which repeatedly show up on the "merlin" report for the the KWSys dashboard to see if there is anything obvious that can be done to deal with the source code issues that gcc/g++ has discovered for my Debian Buster platform. Alan __ Alan W. Irwin Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __ Linux-powered Science __ -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake-developers
Re: [cmake-developers] kernel log segfault warning messages when building/testing CMake
Am Dienstag, 23. Oktober 2018, 20:58:51 CEST schrieb Alan W. Irwin: > My "merlin" computer automatically builds and tests (including the > PLplot contract test) CMake each day at 4:32 Pacific time, and I have > noticed for some time now that those successful "merlin" tests (clean for > the CMake dashboard, but with 8 compile warnings but no errors for the > KWSys dashboard that is also generated by the CMake test) are always > accompanied by segfault warnings in the kernel log file for my Debian > Buster system. At least some of those segfaults seem to > be associated with the KWSys part of this test. Here are those log > warnings for today (taken from /var/log/messages): I get those daily, here from my sparc: [1540252.631482] kwsysTestProces[44830]: segfault at 4 ip 00011c68 (rpc 00011c28) sp ffd7b670 error 1 in kwsysTestProcess[1+e000] [1540255.178055] kwsysTestProces[45441]: segfault at 4 ip 00011c68 (rpc 00011c28) sp ff933670 error 1 in kwsysTestProcess[1+e000] [1541099.090339] kwsysTestProces[65043]: segfault at 4 ip 00011c68 (rpc 00011c28) sp ffad96b0 error 1 in kwsysTestProcess[1+e000] [1541099.096219] kwsysTestProces[65049]: segfault at 4 ip 00011c68 (rpc 00011c28) sp ff95f6b0 error 1 in kwsysTestProcess[1+e000] This is intentional, there are test binaries that segfault to test if that is properly detected by the signal handler/debug/ctest/whatever code. > I don't notice any other platform on KWSys dashboard that also has the > 8 build warnings, but it is likely my fairly recent gcc compiler > (Debian Buster ccache and gcc/g++ 8.2.0) is more sensitive to > problematic code in KWSys than prior versions of the gcc compiler > suite. I run gcc 8.2 on castor, but I don't know why this does not trigger these warnings. Eike signature.asc Description: This is a digitally signed message part. -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake-developers
[cmake-developers] kernel log segfault warning messages when building/testing CMake
My "merlin" computer automatically builds and tests (including the
PLplot contract test) CMake each day at 4:32 Pacific time, and I have
noticed for some time now that those successful "merlin" tests (clean for the
CMake dashboard, but with 8 compile warnings but no errors for the
KWSys dashboard that is also generated by the CMake test) are always
accompanied by segfault warnings in the kernel log file for my Debian
Buster system. At least some of those segfaults seem to
be associated with the KWSys part of this test. Here are those log
warnings for today (taken from /var/log/messages):
==
Oct 23 04:32:47 merlin kernel: [145023.933476] cmsysTestProces[5466]: segfault
at 4 ip 55d23f362e3b sp 7ffda48d1940
error 6 in cmsysTestProcess[55d23f362000+6000]
Oct 23 04:32:47 merlin kernel: [145023.933483] Code: 00 48 8d 3d 6f 56 00 00 e8
12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 f
f ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00
00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:32:47 merlin kernel: [145023.935919] cmsysTestProces[5472]: segfault
at 4 ip 55b7f515be3b sp 7ffd46054c90
error 6 in cmsysTestProcess[55b7f515b000+6000]
Oct 23 04:32:47 merlin kernel: [145023.935928] Code: 00 48 8d 3d 6f 56 00 00 e8
12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 f
f ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00
00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:33:48 merlin kernel: [145084.853316] Crash[6355]: segfault at 0 ip
55f36cfd8135 sp 7ffcc0d2d0f0 error 6 i
n Crash[55f36cfd8000+1000]
Oct 23 04:33:48 merlin kernel: [145084.853321] Code: 2f 00 00 01 5d c3 0f 1f 80
00 00 00 00 c3 0f 1f 80 00 00 00 00 e9 7b f
f ff ff 55 48 89 e5 48 c7 45 f8 00 00 00 00 48 8b 45 f8 00 01 00 00 00 b8
00 00 00 00 5d c3 66 2e 0f 1f 84 00 00 00 00
Oct 23 04:34:33 merlin kernel: [145130.287867] kwsysTestProces[2964]: segfault
at 4 ip 557e9dadce3b sp 7fff85d3cce0 error 6 in
kwsysTestProcess[557e9dadc000+6000]
Oct 23 04:34:33 merlin kernel: [145130.287875] Code: 00 48 8d 3d 6f 56 00 00 e8 12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 ff ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00 00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:34:35 merlin kernel: [145131.727495] kwsysTestProces[4382]: segfault at 4 ip 55ccd8790e3b sp 7ffc422fea20 error 6 in kwsysTestProcess[55ccd879+6000]
Oct 23 04:34:35 merlin kernel: [145131.727499] Code: 00 48 8d 3d 6f 56 00 00 e8 12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 ff ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00 00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:35:12 merlin kernel: [145169.367275] kwsysTestProces[4838]: segfault at 4 ip 563d98a43e3b sp 7ffce04a4ab0 error 6 in kwsysTestProcess[563d98a43000+6000]
Oct 23 04:35:12 merlin kernel: [145169.367279] Code: 00 48 8d 3d 6f 56 00 00 e8 12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 ff ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00 00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:41:17 merlin kernel: [145533.853387] kwsysTestProces[17736]: segfault at 4 ip 56237dea3e3b sp 7ffc5cd97cf0 error 6 in kwsysTestProcess[56237dea3000+6000]
Oct 23 04:41:17 merlin kernel: [145533.853394] Code: 00 48 8d 3d 6f 56 00 00 e8 12 f5 ff ff 48 8b 3d db 83 00 00 e8 76 f4 ff ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e 00 00 00 04 25 04 00 00 00 00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
Oct 23 04:41:17 merlin kernel: [145533.855467] kwsysTestProces[17742]: segfault at 4 ip 55ae9d89ce3b sp 7fff23ff8b30 error 6 in kwsysTestProcess[55ae9d89c000+6000]
Oct 23 04:41:17 merlin kernel: [145533.855473] Code: 00 48 8d 3d 6f 56 00 00 e8 12 f5
ff ff 48 8b 3d db 83 00 00 e8 76 f4 ff ff 48 8b 3d ef 83 00 00 e8 6a f4 ff ff ba 2e
00 00 00 04 25 04 00 00 00 00 00 00 00 48 8b 0d b3 83 00 00 be 01 00 00
==
I don't notice any other platform on KWSys dashboard that also has the
8 build warnings, but it is likely my fairly recent gcc compiler
(Debian Buster ccache and gcc/g++ 8.2.0) is more sensitive to
problematic code in KWSys than prior versions of the gcc compiler
suite.
Anyhow, I suggest cleaning up the 8 build warnings for the KWSys
code to see if those are the source of some/all of these
segfaults. And if no CMake developer here has access to Debian Buster, I
would be glad to run preliminary tests of any of your proposed KWSys code
changes to make sure the compile warnings are gone.
I have attached a compressed version of the my_dashboard.cmake script
that created a while ago (with lots of advice from Brad) to configure
this CMake test in case there is anything problematic in there. For
example, I notice
set(ENV{CXXFLAGS} "-O3 -DNDEBUG")
set(ENV{CFLAGS} "-O3 -DNDEBUG")
in there in case that makes a difference with regard to the above KWSys compile
warnings
that seem to appear just for my platform.
Alan
