Date: Sun, 17 Feb 2008 14:56:19 +0100 (CET) From: Stefan Richter Subject: firewire: fw-sbp2: fix NULL pointer deref. in slave_alloc 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 --- 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; /*