[Bug 206519] [amdgpu] kernel NULL pointer dereference on shutdown

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=206519

--- Comment #3 from Shlomo (shlomo at fastmail.com) ---
The bug first occurs in Arch Linux 5.5.arch1-1, which set
CONFIG_DRM_AMD_DC_HDCP=y [1].

Arch Linux 5.4.15.arch1-1 is good.
Arch Linux 5.4.15.arch1-1 with CONFIG_DRM_AMD_DC_HDCP=y set (and no other
changes) is bad.

Arch Linux 5.5.arch1-1 (and later) is bad. (CONFIG_DRM_AMD_DC_HDCP=y is set)

Testing the most recent Arch Linux kernel shows the same:
Arch Linux 5.5.3.arch1 is bad.
Arch Linux 5.5.3.arch1 with CONFIG_DRM_AMD_DC_HDCP unset is good.

This means that this bug was triggered by changes to the config, not kernel
changes, so I don't know if this is a regression or not.

[1]
https://git.archlinux.org/svntogit/packages.git/commit/trunk?h=packages/linux&id=019514c4cdff26addfd49db8a78a857cb03994d9

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