[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
I just ran into this problem on xenial, but I wanted to inquire whether there is any plan to backport the patch before I try to compile it myself. Can we expect the fix in xenial any time soon? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
Hi Matthias, I was affected by this bug and can confirm, that applying the linked patch fixes the issue on ubuntu 16.04 (Xenial Xerus) on a i7-6600U. It would be nice if the patched could be backported to Xenial as it's tedious to recompile valgrind on every update to get it functional again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: valgrind (Ubuntu Xenial) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
please could somebody confirm that backporting the patch for this issue solved the problem? ** Also affects: valgrind (Ubuntu Zesty) Importance: Medium Status: Confirmed ** Also affects: valgrind (Ubuntu Yakkety) Importance: Undecided Status: New ** Also affects: valgrind (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: valgrind (Ubuntu Yakkety) Status: New => Fix Released ** Changed in: valgrind (Ubuntu Zesty) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
Installing valgrind 1:3.12.0~svn20160714-1ubuntu2 from yakkety onto my xenial machine seems to resolve the issue, too. But probably including the patch from https://bugs.kde.org/show_bug.cgi?id=353370#c9 will be easier than doing an update in xenial, right? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
We are seeing this bug with valgrind 1:3.11.0-1ubuntu4.1 on 16.04 in our Ceph testing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
I can confirm the problem on 16.04 and I can also confirm that the patch posted in kde-bugs #353370 report seems to fix the issue (valgrind compiled from source with and without the patch) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
I also get the same error on Ubuntu Wily + Valgrind 3.11 + g++ 5.2 vex amd64->IR: unhandled instruction bytes: 0xF 0xC7 0xF0 0x89 0x6 0xF 0x42 0xC1 vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0 vex amd64->IR: VEX=0 VEX.L=0 VEX.n=0x0 ESC=0F vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0 ==13334== valgrind: Unrecognised instruction at address 0x510dec5. ==13334==at 0x510DEC5: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21) ==13334==by 0x510E061: std::random_device::_M_getval() (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21) ==13334==by 0x477C8D: std::random_device::operator()() (random.h:1619) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: valgrind (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
I get the exact same error and bytes. unhandled instruction bytes: 0xF 0xC7 0xF0 0x89 0x6 0xF 0x42 0xC1 It happens when using std::random_device with GCC 5.2 on willy. It's weird GCC stopped using /dev/urandom, a very good randomness source that makes use of RDRAND -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
** Tags added: wily ** Changed in: valgrind (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
This upstream bug looks related (affecting rdrand) but the instruction bytes are different: https://bugs.kde.org/show_bug.cgi?id=353370 ** Bug watch added: KDE Bug Tracking System #353370 https://bugs.kde.org/show_bug.cgi?id=353370 ** Also affects: valgrind via https://bugs.kde.org/show_bug.cgi?id=353370 Importance: Unknown Status: Unknown ** No longer affects: valgrind -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1501545] Re: Valgrind fails on rdrand when the cpu supports it (haswell)
** Description changed: vex amd64->IR: unhandled instruction bytes: 0xF 0xC7 0xF0 0x89 0x6 0xF 0x42 0xC1 vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0 vex amd64->IR: VEX=0 VEX.L=0 VEX.n=0x0 ESC=0F vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0 opcode "rdrand %eax" + Need valgrind 1:3.11.0-1ubuntu1 + How to reproduce (need haswell or a cpu that supports rdrand) http://pastebin.ubuntu.com/12628142/ g++ -std=c++14 test.cpp -o test valgrind ./test Bug also needs to be filed upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501545 Title: Valgrind fails on rdrand when the cpu supports it (haswell) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1501545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
