netdev - Re: STMMAC: sleep inside atomic

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 06 Sep 2010 13:08:55 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jirislaby@...il.com
Cc:	peppe.cavallaro@...com, netdev@...r.kernel.org
Subject: Re: STMMAC: sleep inside atomic

From: Jiri Slaby <jirislaby@...il.com>
Date: Mon, 06 Sep 2010 21:25:07 +0200

> On 09/06/2010 11:47 AM, Peppe CAVALLARO wrote:
>> On 9/4/2010 1:47 PM, Jiri Slaby wrote:
>>> stanse found that the driver may sleep inside atomic:
>>> stmmac_resume
>>>   -> spin_lock
>>>   -> stmmac_open
>>>     -> request_irq
>>>     -> kzalloc(..., GFP_KERNEL);
>>>     -> init_dma_desc_rings
>>>       -> kmalloc(..., GFP_KERNEL);
>>>     -> and many others...
>>>   -> spin_unlock
>>>
>>> Could you fix that?
>>>
>> Yes I could ...  kmalloc(...,GFP_KERNEL) can sleep!
>> I will fix the spinlock usage in the driver's resume function and send a
>> patch to the mailing list asap.
> 
> Hi, I hope you'll carbon-copy me. It's not only kmalloc, request_irq
> and others may sleep too.

Guiseppe CAVALLARO posted a patch that seems to be a working one,
please see his netdev posting.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html