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Date: Mon, 01 Sep 2014 14:12:05 +0300
From: Mathias Nyman <mathias.nyman@intel.com>
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To: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Linux USB Mailing List <linux-usb@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] xhci-ring: Fix Null pointer dereference
References: <1409068061-10855-1-git-send-email-ricardo.ribalda@gmail.com> <53FDEA48.9030301@intel.com> <CAPybu_1Tzik3yegY2rrXKd7ii1Bzn-ep-gXG5MDZ-rJ2D71-Rw@mail.gmail.com> <53FDF8D9.60103@intel.com> <CAPybu_363MD6bFesB44JkkjJYyi+B8KFG9Q1s6aeKNmvvNCz=A@mail.gmail.com> <53FF0765.3050509@intel.com> <CAPybu_0gf3XKsBFsxGPptq9m588K81fdh1sbOgMWM+hDVaHiWQ@mail.gmail.com> <CAPybu_1UytoxXk-t7u_3vQ6KL-5DmVUz1u5PiDLysBCvgit--A@mail.gmail.com> <53FF48B1.5090901@intel.com> <CAPybu_2rgn-DEUKfdmGsaAsFSQJ_zz6fsdnD0dHmyCPW4B-+WA@mail.gmail.com> <54009A50.9010707@intel.com> <CAPybu_2ZQ9iPA_FfYn2Mqg5vXn40HuFCcVv1Zg900YavKCDxUQ@mail.gmail.com> <CAPybu_3qmtob-uJhcUwEETcM7cXPxOm3-zOjNFLub31mQDdABQ@mail.gmail.com> <54044C5C.9010305@intel.com> <CAPybu_3jtJDXw1rJOQVoc2G9UmDXqeaLW-aNvfO=y306XQoXjQ@mail.gmail.com>
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On 09/01/2014 01:26 PM, Ricardo Ribalda Delgado wrote:
> Well, it is hard to say. rc2 without the patch showed more warnings,
> but never crashed badly (queuecommand_lck....).
> 
> The sample size is not big enough. maybe rc2 also has the
> queuecommand_lck bug, but I havent hit it.
> 

Ok, I won't submit it as I now know what really is going on.

I asked for once of the devices that can trigger this bug,
https://bugzilla.kernel.org/show_bug.cgi?id=75521

I'll know more when I can get my hands on it

-Mathias