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Subject: [Bug 216436] [panic] amd64 11.0-release-p2: Fatal trap 12: page
 fault while in kernel mode, supervisor read data, page not present
Date: Tue, 24 Jan 2017 15:11:58 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216436

            Bug ID: 216436
           Summary: [panic] amd64 11.0-release-p2: Fatal trap 12: page
                    fault while in kernel mode, supervisor read data, page
                    not present
           Product: Base System
           Version: 11.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: mexas@bris.ac.uk

Created attachment 179278
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D179278&action=
=3Dedit
core.txt file

The panic happened when I switched from a wireless
network to wired ethernet via /etc/rc.d/netif restart,
i.e. from

#ifconfig_em0=3D"DHCP"
wlans_iwm0=3D"wlan0"
ifconfig_wlan0=3D"DHCP WPA"

to

ifconfig_em0=3D"DHCP"
#wlans_iwm0=3D"wlan0"
#ifconfig_wlan0=3D"DHCP WPA"

in /etc/rc.conf

core.txt is attached

Thanks

Anton

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