[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

            Bug ID: 219399
           Summary: System panics after several hours of
                    14-threads-compilation orgies using poudriere on AMD
                    Ryzen...
           Product: Base System
           Version: 11.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: nbe at renzel.net

Hi,

hardware:
---------
    MBO: MSI X370 GAMING PRO CARBON (MS-7A32)
    CPU: AMD Ryzen 1700 (default clock)
    RAM: 2x Crucial 16GB (CT16G4DFD8213.C16FAD)
    GPU: Nvidia GT218

software: FreeBSD 11.0-STABLE #1 r318443M

after several hours of poudriere compilation with 14 threads my system panics
and reboots:

> Panic String: vm_fault: fault on nofault entry, addr: fffffe0092de3000

it panics every time - the interval is different every time, but alway less
than 24h.

I ran "memtest86+" that passed and ran "Prime95" torture from the "Ultimate
Boot CD" for more than 24h without errors or crashes. So I don't think that's a
hardware problem.

Unfortunately, I cannot provide a backtrace for some reason:

> root at asbach:/var/crash/#kgdb /usr/lib/debug/boot/kernel/kernel.debug /var/crash/vmcore.1
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "amd64-marcel-freebsd"...
> Cannot access memory at address 0x0
> (kgdb) bt
> #0  0x0000000000000000 in ?? ()
> Cannot access memory at address 0x0
> (kgdb) quit

"vmcore.1" is 5GB large - if someone needs it I can upload it somewhere.

Any ideas of what can I do do to get a stable system?



Thanks and regards,
Nils

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