lkml.org 
[lkml]   [2011]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: 2.6.37-rc8: Reported regressions from 2.6.36
From
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Date: Wed, 29 Dec 2010 23:59:38 +0100 (CET)

> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=24592
> Subject : 2.6.37-rc5: NULL pointer oops in selinux_socket_unix_stream_connect
> Submitter : Jeremy Fitzhardinge <jeremy@goop.org>
> Date : 2010-12-08 21:09 (22 days old)
> Message-ID : <4CFFF3F3.90100@goop.org>
> References : http://marc.info/?l=linux-kernel&m=129184256629712&w=2

This bug is intended to be fixed by:

commit 3610cda53f247e176bcbb7a7cca64bc53b12acdb
Author: David S. Miller <davem@davemloft.net>
Date: Wed Jan 5 15:38:53 2011 -0800

af_unix: Avoid socket->sk NULL OOPS in stream connect security hooks.

unix_release() can asynchornously set socket->sk to NULL, and
it does so without holding the unix_state_lock() on "other"
during stream connects.

However, the reverse mapping, sk->sk_socket, is only transitioned
to NULL under the unix_state_lock().

Therefore make the security hooks follow the reverse mapping instead
of the forward mapping.

Reported-by: Jeremy Fitzhardinge <jeremy@goop.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>



\
 
 \ /
  Last update: 2011-01-10 09:09    [W:0.068 / U:1.488 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site