[Bug 230144] Linux emulator does not work on Ryzen / Epic processors

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230144

Nathan Whitehorn <nwhitehorn at FreeBSD.org> changed:

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

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

$ truss /compat/linux/bin/uname
linux_brk(0x0)                                   = 6324224 (0x608000)
SIGNAL 11 (SIGSEGV) code=SEGV_MAPERR trapno=12 addr=0x7ffffffff508
process killed, signal = 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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