linux-kernel - Re: 2.6.21-rc7: BUG: sleeping function called from invalid context at net/core/sock.c:1523

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Message-ID: <Pine.LNX.4.64.0705161124030.25986@twin.jikos.cz>
Date:	Wed, 16 May 2007 11:29:45 +0200 (CEST)
From:	Jiri Kosina <jikos@...os.cz>
To:	Satyam Sharma <satyam.sharma@...il.com>
cc:	Marcel Holtmann <marcel@...tmann.org>, Greg KH <gregkh@...e.de>,
	Jeremy Fitzhardinge <jeremy@...p.org>, maxk@...lcomm.com,
	bluez-devel@...ts.sourceforge.net,
	Cedric Le Goater <clg@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org
Subject: Re: 2.6.21-rc7: BUG: sleeping function called from invalid context
 at net/core/sock.c:1523

On Fri, 11 May 2007, Satyam Sharma wrote:

> (later)
> I Googled a bit to see if this problem was faced elsewhere in the kernel
> too. Saw the following commit by Ingo Molnar
> (9883a13c72dbf8c518814b6091019643cdb34429):
> -	lock_sock(sock->sk);
> +	local_bh_disable();
> +	bh_lock_sock_nested(sock->sk);
> 	rc = selinux_netlbl_socket_setsid(sock, sksec->sid);
> -	release_sock(sock->sk);
> +	bh_unlock_sock(sock->sk);
> +	local_bh_enable();
> Is it _really_ *this* simple?

Hi Satyam,

actually this *seems* to be proper solution also for our case, thanks for 
pointing this out. I will think about it once again, do some more tests 
with this locking scheme, and will let you know.

Thanks,

-- 
Jiri Kosina
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