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Date:      Fri, 14 Oct 2022 22:36:56 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 267028] General protection fault kernel panic immediately after kldload amdgpu
Message-ID:  <bug-267028-227-XiwIOvhVA5@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-267028-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-267028-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267028

Graham Perrin <grahamperrin@freebsd.org> changed:

           What    |Removed                     |Added
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              Flags|maintainer-feedback?(x11@Fr |
                   |eeBSD.org)                  |
           Keywords|                            |needs-qa

--- Comment #7 from Graham Perrin <grahamperrin@freebsd.org> ---
> =E2=80=A6 immediately after kldload amdgpu =E2=80=A6

(In reply to George Mitchell from comment #0)

If I understand correctly, the attachment shows:=20

1. kldload amdgpu whilst in single user mode

2. a subsequent, but non-immediate, exit ^D to multi-user mode

3. panic=20


=E2=80=A6
ugen0.4: <Logitech USB Optical Mouse> at usbus0
<118>Enter full pathname of shell or RETURN for /bin/sh: Cannot read termcap
database;
<118>using dumb terminal settings.
<118>root@:/ # kldload amdgpu
<6>[drm] amdgpu kernel modesetting enabled.
=E2=80=A6
<6>[drm] Initialized amdgpu 3.40.0 20150101 for drmn0 on minor 0
<118>root@:/ # ^D
<118>Setting hostuuid: 032e02b4-0499-0547-c106-430700080009.
<118>Setting hostid: 0x82f0750c.


Fatal trap 9: general protection fault while in kernel mode
cpuid =3D 0; apic id =3D 00
instruction pointer     =3D 0x20:0xffffffff80d17870
stack pointer           =3D 0x28:0xfffffe0075fdda60
frame pointer           =3D 0x28:0xfffffe0075fdda60
code segment            =3D base 0x0, limit 0xfffff, type 0x1b
                        =3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        =3D interrupt enabled, resume, IOPL =3D 0
current process         =3D 52 (kldload)
=E2=80=A6

--=20
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