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    SubjectRe: [PATCH 20/27] ACPICA: Tables: Fix invalid pointer accesses in acpi_tb_parse_root_table().
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    On Mon, May 5, 2014 at 12:23 AM, Zheng, Lv <lv.zheng@intel.com> wrote:
    > Hi, Rafael
    >
    >> From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-owner@vger.kernel.org] On Behalf Of Rafael J. Wysocki
    >> Sent: Monday, May 05, 2014 8:43 AM
    >>
    >> On Saturday, May 03, 2014 08:59:14 AM Josh Boyer wrote:
    >> > On Tue, Apr 29, 2014 at 10:05 PM, Lv Zheng <lv.zheng@intel.com> wrote:
    >> > > The commit of back porting Linux XSDT validation mechanism has introduced
    >> > > a regreession:
    >> > > Commit: 671cc68dc61f029d44b43a681356078e02d8dab8
    >> > > Subject: ACPICA: Back port and refine validation of the XSDT root table.
    >> > > There is a pointer still accessed after unmapping.
    >> > >
    >> > > This patch fixes this issue. Lv Zheng.
    >> > >
    >> > > Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=73911
    >> > > Buglink: https://bugs.archlinux.org/task/39811
    >> > > Signed-off-by: Lv Zheng <lv.zheng@intel.com>
    >> > > Reported-and-tested-by: Bruce Chiarelli <mano155@gmail.com>
    >> > > Reported-and-tested-by: Spyros Stathopoulos <spystath@gmail.com>
    >> > > Signed-off-by: Bob Moore <robert.moore@intel.com>
    >> > > Cc: <stable@vger.kernel.org> # 3.14.x: 671cc68: ACPICA: Back port and refine validation of the XSDT root table.
    >> >
    >> > This patch should get into 3.15-rcX soon. It fixes a known regression
    >> > that prevents booting on machines with AMI firmware, and that is
    >> > present in 3.14 so we need it for stable as well. Rafael?
    >>
    >> Lv, is it safe to take this patch alone into 3.15-rc?
    >
    > Yes, it's safe to only take this patch to be a regression fix.

    FWIW, Fedora is carrying this on top of 3.14.2 already, and people
    with the impacted machines say it's working for them. So I agree it
    should be safe.

    Thanks to the both of you.

    josh


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