linux-kernel - Re: [PATCH v3] usbip: dynamically allocate idev by nports found in sysfs

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Message-ID: <ac85c509-72ec-c126-afb7-521ddde87ec1@kernel.org>
Date:   Wed, 23 May 2018 10:44:57 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Michael Grzeschik <m.grzeschik@...gutronix.de>,
        linux-usb@...r.kernel.org
Cc:     valentina.manea.m@...il.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH v3] usbip: dynamically allocate idev by nports found in
 sysfs

On 05/23/2018 03:22 AM, Michael Grzeschik wrote:
> As the amount of available ports varies by the kernels build
> configuration. To remove the limitation of the fixed 128 ports
> we allocate the amount of idevs by using the number we get
> from the kernel.
> 
> Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
> ---
> v1 -> v2: - reworked memory allocation into one calloc call
>           - added error path on allocation failure
> v2 -> v3: - moved check for available nports to beginning of function
> 

Hmm. With this patch I see a segfault when I run usbip port command.
I think this patch is incomplete and more changes are needed to the
code that references the idev array.

I can't take this patch.

thanks,
-- Shuah