linux-kernel - Re: 2.6.28: warn_slowpath in orinoco receive path

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 for Android: free password hash cracker in your pocket

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

Message-ID:  <4962A6B4.7060309@shaw.ca>
Date:	Mon, 05 Jan 2009 18:32:52 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	linux-kernel@...r.kernel.org
Cc:	orinoco-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject:  Re: 2.6.28: warn_slowpath in orinoco receive path

Jiri Slaby wrote:
> On 01/05/2009 09:32 PM, Dave wrote:
>> --- a/drivers/net/wireless/orinoco/orinoco.c
>> +++ b/drivers/net/wireless/orinoco/orinoco.c
>> @@ -1616,9 +1616,15 @@ static void orinoco_rx_isr_tasklet(unsigned long
>> data)
>>
>>         /* extract desc and skb from queue */
>>         list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
>> +               unsigned long flags;
>> +
>>                 desc = rx_data->desc;
>>                 skb = rx_data->skb;
>> +
>> +               local_irq_save(flags);
>>                 list_del(&rx_data->list);
>> +               local_irq_restore(flags);
>> +
> 
> Hi,
> 
> another processor still can see inconsistent state, spinlock should be taken.
> Or, am I missing something?

Think you're right, this should be spin_lock_irq or spin_lock_irqsave on 
some lock. Otherwise the interrupt could still occur on some other CPU 
and hit the race.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/