James Bottomley a9c9bdba7a fix crash in scsi_dispatch_cmd() ...

commit bfe159a51203c15d23cb3158fffdc25ec4b4dda1 upstream.

USB surprise removal of sr is triggering an oops in
scsi_dispatch_command().  What seems to be happening is that USB is
hanging on to a queue reference until the last close of the upper
device, so the crash is caused by surprise remove of a mounted CD
followed by attempted unmount.

The problem is that USB doesn't issue its final commands as part of
the SCSI teardown path, but on last close when the block queue is long
gone.  The long term fix is probably to make sr do the teardown in the
same way as sd (so remove all the lower bits on ejection, but keep the
upper disk alive until last close of user space).  However, the
current oops can be simply fixed by not allowing any commands to be
sent to a dead queue.

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

2014-02-10 16:11:15 -05:00

..

blk-barrier.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-cgroup.c

blk-cgroup: Fix an RCU warning in blkiocg_create()

2010-05-07 08:57:00 +02:00

blk-cgroup.h

cgroups: blkio subsystem as module

2010-03-12 15:52:36 -08:00

blk-core.c

fix crash in scsi_dispatch_cmd()

2014-02-10 16:11:15 -05:00

blk-exec.c

fix crash in scsi_dispatch_cmd()

2014-02-10 16:11:15 -05:00

blk-integrity.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-ioc.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-iopoll.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

blk-map.c

block: check for proper length of iov entries earlier in blk_rq_map_user_iov()

2011-04-17 16:16:17 -04:00

blk-merge.c

block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead

2011-04-17 16:16:14 -04:00

blk-settings.c

block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead

2011-04-17 16:16:14 -04:00

blk-softirq.c

generic-ipi: remove CSD_FLAG_WAIT

2009-02-25 14:13:44 +01:00

blk-sysfs.c

block, blk-sysfs: Fix an err return path in blk_register_queue()

2012-03-14 10:57:21 -04:00

blk-tag.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-timeout.c

block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer

2010-04-21 17:42:08 +02:00

blk.h

block: add proper state guards to __elv_next_request

2012-05-17 11:20:26 -04:00

bsg.c

bsg: fix incorrect device_status value

2011-01-06 18:08:15 -05:00

cfq-iosched.c

cfq-iosched: fix a rcu warning

2012-05-17 11:21:01 -04:00

compat_ioctl.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

deadline-iosched.c

block: convert to pos and nr_sectors accessors

2009-05-11 09:50:54 +02:00

elevator.c

Block: Fix block/elevator.c elevator_get() off-by-one error

2010-04-02 08:41:14 +02:00

genhd.c

block: Fix discard alignment calculation and printing

2010-01-11 14:29:19 +01:00

ioctl.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

Kconfig

block: make CONFIG_BLK_CGROUP visible

2010-03-16 08:57:15 +01:00

Kconfig.iosched

cgroups: blkio subsystem as module

2010-03-12 15:52:36 -08:00

Makefile

blkio: Introduce blkio controller cgroup interface

2009-12-03 19:28:51 +01:00

noop-iosched.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

scsi_ioctl.c

block: fail SCSI passthrough ioctls on partition devices

2014-02-10 16:10:44 -05:00