From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "Alan Cox" <alan@linux.intel.com>,
"Mauro Carvalho Chehab" <mchehab@redhat.com>,
"Bjørn Mork" <bjorn@mork.no>
Subject: [ 5/5] media: mantis: fix silly crash case
Date: Wed, 22 May 2013 15:18:11 -0700 [thread overview]
Message-ID: <20130522221331.907095720@linuxfoundation.org> (raw)
In-Reply-To: <20130522221330.720801923@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alan Cox <alan@linux.intel.com>
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@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/dvb/mantis/mantis_dvb.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- 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 man
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);
next prev parent reply other threads:[~2013-05-22 22:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-22 22:18 [ 0/5] 3.4.47-stable review Greg Kroah-Hartman
2013-05-22 22:18 ` [ 1/5] btrfs: dont stop searching after encountering the wrong item Greg Kroah-Hartman
2013-05-22 22:18 ` [ 2/5] hwmon: fix error return code in abituguru_probe() Greg Kroah-Hartman
2013-05-22 22:18 ` [ 3/5] i2c: designware: always clear interrupts before enabling them Greg Kroah-Hartman
2013-05-22 22:18 ` [ 4/5] drm/radeon: Fix VRAM size calculation for VRAM >= 4GB Greg Kroah-Hartman
2013-05-22 22:18 ` Greg Kroah-Hartman [this message]
2013-05-23 16:53 ` [ 0/5] 3.4.47-stable review Shuah Khan
2013-05-23 16:53 ` Shuah Khan
2013-05-24 12:43 ` Satoru Takeuchi
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