I have a Ryzen 1700X on a MSI B350 Motherboard and 64 Gb of RAM (Corsair LPX 2400). If I do a very intensive multi-threaded compilation session sometimes I get a segfault. This seems to be a problem with Ryzen it self nad maybe it is related to the bug described in bug #1690085 but I believe it is not the same. This bug affects many Linux users with Ryzen, see for example this thread in the AMD forum: https://community.amd.com/thread/215773?start=0&tstart=0 or the Gentoo Wiki that talks about this problem in the Troubleshoting section of their Ryzen page: https://wiki.gentoo.org/wiki/Ryzen#Troubleshooting
It is also very easy to verify if you have a processor with the problem. Fortunately some smart people have created a simple script that always shows the problem in my system and in the systems of the other people of the thread. The script can be found in
https://github.com/suaefar/ryzen-test
You just have to clone the repository using git, move to the ryzen-test directory and run ./kill_ryzen.sh. It is a very simple script, it downloads gcc-7.1 source code into a vram disk and start #processors simultaneous compilation of it. If any compilation fails it writes a message in the console saying how long it took to get the failure. After a few minutes, the build in my system fails unless I turn off SMT. With SMT off it can take many hours, but still fails in less than one day.
I am opening this bug report because I believe we should try to verify if this is a widespread problem and inform potential users of the problems. Hopefully AMD or the Kernel developers can find a workaround. I have also already opened a bug report in the Linux Kernel Bugzilla (https://bugzilla.kernel.org/show_bug.cgi?id=196481), but unfortunately it is not calling the attention of the kernel developers.
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ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-id', '/dev/snd/pcmC2D0c', '/dev/snd/controlC2', '/dev/snd/by-path', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D2c', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/controlC1', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D11p', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 17.04
HibernationDevice: RESUME=UUID=b299e86c-e86e-4608-b025-586133a3f5a6
InstallationDate: Installed on 2017-05-30 (63 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
IwConfig:
enp33s0 no wireless extensions.
lo no wireless extensions.
MachineType: Micro-Star International Co., Ltd MS-7A34
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-29-generic root=UUID=ea2ac8eb-cc5f-42a3-b7db-3d6a870496a9 ro quiet iommu=soft splash rcu_nocbs=1-15 vt.handoff=7
ProcVersionSignature: Ubuntu 4.10.0-29.33-generic 4.10.17
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.10.0-29-generic N/A
linux-backports-modules-4.10.0-29-generic N/A
linux-firmware 1.164.1
RfKill:
Tags: zesty
Uname: Linux 4.10.0-29-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo users video
_MarkForUpload: True
dmi.bios.date: 07/06/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.71
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B350 TOMAHAWK (MS-7A34)
dmi.board.vendor: Micro-Star International Co., Ltd
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.71:bd07/06/2017:svnMicro-StarInternationalCo.,Ltd:pnMS-7A34:pvr1.0:rvnMicro-StarInternationalCo.,Ltd:rnB350TOMAHAWK(MS-7A34):rvr1.0:cvnMicro-StarInternationalCo.,Ltd:ct3:cvr1.0:
dmi.product.name: MS-7A34
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd
The other log file.