netdev - Re: net: nfc: BUG and panic in accept() on 3.5-rc2

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, 11 Jun 2012 18:55:59 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	David Miller <davem@...emloft.net>,
	lauro.venancio@...nbossa.org, aloisio.almeida@...nbossa.org,
	Dave Jones <davej@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	linux-wireless <linux-wireless@...r.kernel.org>
Subject: Re: net: nfc: BUG and panic in accept() on 3.5-rc2

On Mon, 2012-06-11 at 16:58 +0200, Eric Dumazet wrote:
> On Mon, 2012-06-11 at 16:50 +0200, Sasha Levin wrote:
> 
> > Eric, Is there something that documents at what state each of the
> > callbacks in the network subsystem can be called? Like a big flow chart
> > of some sorts?
> > 
> > I'm asking because I've looked at this as well before sending this mail,
> > and while the fix does look trivial, I wasn't sure whether it is really
> > the correct fix, or the problem is that this callback wasn't supposed be
> > called at all so something else is broken (we had such issue with
> > namespaces and unshare() not long ago).
> > 
> 
> I am not aware of such 'document'.
> 
> Things change, and only *good* reference is actual source code.
> 
> Now, take a look at sock_graft()/sock_orphan()/inet_release() ...

I see.

I grepped for release callbacks and the first few in the result (atm,
ax_25) did check for !sk, so I guess I'll just follow what I see in
other code in the future :)

--
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