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Date:      Fri, 17 Aug 2018 19:57:20 +0000
From:      bugzilla-noreply@freebsd.org
To:        emulation@FreeBSD.org
Subject:   [Bug 230144] Linux emulator does not work on Ryzen / Epic processors
Message-ID:  <bug-230144-4077-blAUQZj92k@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-230144-4077@https.bugs.freebsd.org/bugzilla/>
References:  <bug-230144-4077@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230144

Nathan Whitehorn <nwhitehorn@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |nwhitehorn@FreeBSD.org

--- Comment #8 from Nathan Whitehorn <nwhitehorn@FreeBSD.org> ---
It might be the brk() issue. I'm experiencing the same trouble on EPYC hard=
ware
with 11.2. Truss gives the following:

$ truss /compat/linux/bin/uname
linux_brk(0x0)                                   =3D 6324224 (0x608000)
SIGNAL 11 (SIGSEGV) code=3DSEGV_MAPERR trapno=3D12 addr=3D0x7ffffffff508
process killed, signal =3D 11 (core dumped)

(Output is identical for all Linux executables)

Unfortunately, this is a production machine on which I cannot install custom
kernels.

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