[ 3.5.y.z extended stable ] Patch "mantis: fix silly crash case" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Fri May 24 14:15:03 UTC 2013
This is a note to let you know that I have just added a patch titled
mantis: fix silly crash case
to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From b216649617c1eab3cf682221dad59e2ee34ee55a Mon Sep 17 00:00:00 2001
From: Alan Cox <alan at linux.intel.com>
Date: Thu, 9 Aug 2012 12:33:52 -0300
Subject: [PATCH] mantis: fix silly crash case
commit e1d45ae10aea8e8a403e5d96bf5902ee670007ff upstream.
If we set mantis->fe to NULL on an error its not a good idea to then try
passing NULL to the unregister paths and oopsing really.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=16473
Signed-off-by: Alan Cox <alan at linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab at redhat.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
drivers/media/dvb/mantis/mantis_dvb.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb/mantis/mantis_dvb.c b/drivers/media/dvb/mantis/mantis_dvb.c
index e5180e4..5d15c6b 100644
--- a/drivers/media/dvb/mantis/mantis_dvb.c
+++ b/drivers/media/dvb/mantis/mantis_dvb.c
@@ -248,8 +248,10 @@ int __devinit mantis_dvb_init(struct mantis_pci *mantis)
err5:
tasklet_kill(&mantis->tasklet);
dvb_net_release(&mantis->dvbnet);
- dvb_unregister_frontend(mantis->fe);
- dvb_frontend_detach(mantis->fe);
+ if (mantis->fe) {
+ dvb_unregister_frontend(mantis->fe);
+ dvb_frontend_detach(mantis->fe);
+ }
err4:
mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_mem);
--
1.8.1.2
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