linux-kernel - Re: NULL pointer dereference in msi_set_mask

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Message-ID: <ed32c159-1629-68e5-26e2-b1770a43acc3@molgen.mpg.de>
Date:   Thu, 19 Jul 2018 10:55:01 +0200
From:   Paul Menzel <pmenzel+linux-pci@...gen.mpg.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, Marc Zyngier <marc.zyngier@....com>
Subject: Re: NULL pointer dereference in msi_set_mask_bit

Dear Thomas,


On 07/18/18 22:05, Paul Menzel wrote:

> Am 18.07.2018 um 21:00 schrieb Thomas Gleixner:
> 
>> On Wed, 18 Jul 2018, Paul Menzel wrote:
>>> On 07/18/18 17:39, Thomas Gleixner wrote:
>>>> Bah. Could you please enable GENERIC_IRQ_DEBUGFS and after a successful
>>>> boot up provide me the content of all files in /sys/kernel/debug/irq/ and
>>>> its subfolders?
>>>
>>> Sure, please find them attached. `7zr x sys-kernel-debug-irq.7z` should
>>> extract it.
>>
>> It generates the files, but they are all size '1' and contain nothing.
> 
> Sorry, I do not know what I did wrong. I’ll try it again tomorrow.

Strange `sudo tar cf sys-kernel-debug-irq.tar /sys/kernel/debug/irq` had the
same problem.

I had to copy the files, and then was able to create an archive with
non-zero files. Please find the tar archive attached.


Kind regards,

Paul

Download attachment "sys-kernel-debug-irq.tar" of type "application/x-tar" (92160 bytes)

Download attachment "smime.p7s" of type "application/pkcs7-signature" (5174 bytes)