On Fri, Apr 11, 2014 at 5:10 AM, Jakub Jelinek <jakub@xxxxxxxxxx> wrote: > On Fri, Apr 11, 2014 at 11:32:53AM +0300, Panu Matilainen wrote: >> On 04/10/2014 05:38 PM, Richard W.M. Jones wrote: >> >On Thu, Apr 10, 2014 at 12:23:07PM +0200, Jakub Jelinek wrote: >> >>To investigate runtime rather than compile time >> >>issues, please consider using temporarily -fsanitize=undefined and/or >> >>-fsanitize=address to look for undefined behavior in the packages >> >>you own. >> > >> >Which is this in case anyone else was wondering: >> > >> > '-fsanitize=address' >> > Enable AddressSanitizer, a fast memory error detector. Memory >> > access instructions will be instrumented to detect out-of-bounds >> > and use-after-free bugs. See >> > <http://code.google.com/p/address-sanitizer/> for more details. >> > The run-time behavior can be influenced using the 'ASAN_OPTIONS' >> > environment variable; see >> > <https://code.google.com/p/address-sanitizer/wiki/Flags#Run-time_flags> >> > for a list of supported options. >> >> Also in case anybody else wonders about gcc failing to recognize >> these options, you'll need to add BuildRequires for these: libasan >> for -fsanitize=address and libubsan for -fsanitize=undefined (and >> similarly for leak and thread sanitizers ) > > Yeah. But, note that the sanitizers are meant primarily for development, > not for production, and especially -fsanitize=thread and to some extent > -fsanitize=address aren't completely cheap, so if you do that, please do > so temporarily and don't forget to disable it again for production. Seems they were enabled for RPM in rawhide and now a mock chroot fails to init because RPM explodes. This is from a noarch (which is run on an ARM builder) build from a scratch build. DEBUG util.py:331: Executing command: ['rpm', '-Uvh', '--nodeps', '/builddir/build/originals/kernel-3.15.0-0.rc0.git12.1.fc21.src.rpm'] with env {'LANG': 'en_US.UTF-8', 'TERM': 'vt100', 'SHELL': '/bin/bash', 'HOSTNAME': 'mock', 'PROMPT_COMMAND': 'echo -n "<mock-chroot>"', 'HOME': '/builddir', 'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'} DEBUG util.py:281: ==13953==AddressSanitizer CHECK failed: ../../../../libsanitizer/asan/asan_globals.cc:91 "((AddrIsAlignedByGranularity(g->beg))) != (0)" (0x0, 0x0) DEBUG util.py:281: #0 0xb6a6d21b (/lib/libasan.so.1+0x6121b) DEBUG util.py:281: #1 0xb6a71a8b in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/lib/libasan.so.1+0x65a8b) DEBUG util.py:281: #2 0xb6a2b01b in __asan_register_globals (/lib/libasan.so.1+0x1f01b) DEBUG util.py:281: #3 0xb6f11877 in call_init.part.0 (/lib/ld-linux-armhf.so.3+0x11877) DEBUG util.py:281: #4 0xb6f119d3 in _dl_init (/lib/ld-linux-armhf.so.3+0x119d3) DEBUG util.py:281: #5 0xb6f00bc3 (/lib/ld-linux-armhf.so.3+0xbc3) DEBUG util.py:371: Child return code was: 1 Full scratch build: http://koji.fedoraproject.org/koji/taskinfo?taskID=6727256 josh -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
