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Subject: [Bug 219399] System panics after several hours of
 14-threads-compilation orgies using poudriere on AMD Ryzen...
Date: Thu, 07 Sep 2017 08:59:48 +0000
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.1-RELEASE
X-Bugzilla-Keywords: patch
X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: nbe@renzel.net
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399

--- Comment #238 from Nils Beyer <nbe@renzel.net> ---
(In reply to Don Lewis from comment #237)

okay, just for fun I increased the dead zone of the user page:
--------------------------------------------------------------------------
Index: sys/amd64/amd64/elf_machdep.c=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20=20=20=20=20=20=20=20=
=20=20=20=20=20
--- sys/amd64/amd64/elf_machdep.c       (revision 323186)=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
+++ sys/amd64/amd64/elf_machdep.c       (working copy)=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
@@ -88,10 +88,10 @@=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
 amd64_lower_shared_page(struct sysentvec *sv)=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
 {=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20
        if (hw_lower_amd64_sharedpage !=3D 0) {=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
-               sv->sv_maxuser -=3D PAGE_SIZE;=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20
-               sv->sv_shared_page_base -=3D PAGE_SIZE;=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
-               sv->sv_usrstack -=3D PAGE_SIZE;=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
-               sv->sv_psstrings -=3D PAGE_SIZE;=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
+               sv->sv_maxuser -=3D (128 * PAGE_SIZE);=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
+               sv->sv_shared_page_base -=3D (128 * PAGE_SIZE);=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
+               sv->sv_usrstack -=3D (128 * PAGE_SIZE);=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
+               sv->sv_psstrings -=3D (128 * PAGE_SIZE);=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
        }=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
 }
[...]
root@asbach:/home/nbe/#./sigtramp ^M
8
-1 12 0x7ffffff7f190 8
--------------------------------------------------------------------------

let's see if that changes anything...

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