linux-kernel - Re: USBFS Memory allocation Bug

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Date:	Tue, 9 Mar 2010 17:31:04 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Markus Rechberger <mrechberger@...il.com>
cc:	LKML <linux-kernel@...r.kernel.org>, Greg KH <greg@...ah.com>
Subject: Re: USBFS Memory allocation Bug

On Tue, 9 Mar 2010, Markus Rechberger wrote:

> Hi,
> 
> I just stumbled around following issue:
> 
> [275835.163502] Pid: 14298, comm: mediasrv Not tainted 2.6.33 #7
> [275835.163505] Call Trace:
> [275835.163514]  [<ffffffff810df7a6>] __alloc_pages_nodemask+0x5b6/0x700
> [275835.163520]  [<ffffffff8110c667>] alloc_pages_current+0x87/0xd0
> [275835.163525]  [<ffffffff810dcf79>] __get_free_pages+0x9/0x50
> [275835.163529]  [<ffffffff81114f2b>] __kmalloc+0x13b/0x1f0
> [275835.163535]  [<ffffffff813a18ef>] proc_do_submiturb+0x2ff/0x9d0
> [275835.163539]  [<ffffffff813a26b9>] usbdev_do_ioctl+0x6f9/0x14a0

The mediasrv program tried to allocate more memory than was available.  
It's unfortunate but it's not a bug.

Alan Stern

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