Mario Limonciello 39f81776c6 ACPI: x86: s2idle: Fix a NULL pointer dereference
Ryzen 7000 (Raphael) introduced AMDI0008 for _HID.  This ID was added
in commit ed470febf8 ("ACPI: PM: s2idle: Add support for upcoming AMD
uPEP HID AMDI008"), but then removed in favor of aligning all new IDs
to Rembrandt support in commit fd894f05cf ("ACPI: x86: s2idle: If a
new AMD _HID is missing assume Rembrandt").

Unfortunately there was a mistake in commit 100a573793 ("ACPI: x86:
s2idle: Move _HID handling for AMD systems into structures") that can
lead to a NULL pointer dereference accessing `dev_id->driver_data` in
the sentinel of `amd_hid_ids`.  Fix this dereference.

Reported-by: Richard Gong <Richard.Gong@amd.com>
Fixes: 100a573793 ("ACPI: x86: s2idle: Move _HID handling for AMD systems into structures")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-09-28 21:32:49 +02:00
2022-08-21 10:06:28 -07:00
2022-08-18 11:04:56 -07:00
2022-08-21 10:06:28 -07:00
2022-08-21 17:32:54 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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