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From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: linux1394-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: [PATCH] firewire: fw-sbp2: fix NULL pointer deref in slave_alloc
Date: Sun, 17 Feb 2008 14:56:19 +0100 (CET)	[thread overview]
Message-ID: <tkrat.e8f3d31fb5f9fe01@s5r6.in-berlin.de> (raw)

Fix a kernel bug when running rescan-scsi-bus while a FireWire disk is
connected:  http://bugzilla.kernel.org/show_bug.cgi?id=10008

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
 drivers/firewire/fw-sbp2.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux/drivers/firewire/fw-sbp2.c
===================================================================
--- linux.orig/drivers/firewire/fw-sbp2.c
+++ linux/drivers/firewire/fw-sbp2.c
@@ -1473,6 +1473,10 @@ static int sbp2_scsi_slave_alloc(struct 
 {
 	struct sbp2_logical_unit *lu = sdev->hostdata;
 
+	/* (Re-)Adding logical units via the SCSI stack is not supported. */
+	if (!lu)
+		return -ENOSYS;
+
 	sdev->allow_restart = 1;
 
 	/*

-- 
Stefan Richter
-=====-==--- --=- =---=
http://arcgraph.de/sr/


             reply	other threads:[~2008-02-17 13:56 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-17 13:56 Stefan Richter [this message]
2008-02-17 13:57 ` [PATCH] ieee1394: sbp2: fix rescan-scsi-bus Stefan Richter
2008-02-17 16:03   ` James Bottomley
2008-02-17 17:58     ` Stefan Richter
2008-02-17 21:08       ` Stefan Richter
2008-02-17 17:44 ` [PATCH] firewire: fw-sbp2: fix NULL pointer deref in slave_alloc Stefan Richter
2008-02-17 18:17   ` [PATCH] firewire: fw-sbp2: fix NULL pointer deref in scsi_remove_device Stefan Richter
2008-02-19  8:05     ` [PATCH update] " Stefan Richter

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