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Bart Van Assche 8add44b313 SCSI: Avoid dangling pointer in scsi_requeue_command() 
commit 940f5d47e2 upstream.

When we call scsi_unprep_request() the command associated with the request
gets destroyed and therefore drops its reference on the device.  If this was
the only reference, the device may get released and we end up with a NULL
pointer deref when we call blk_requeue_request.

Reported-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Tejun Heo <tj@kernel.org>
[jejb: enhance commend and add commit log for stable]
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-09 08:27:34 -07:00
..
aacraid aacraid: controller hangs if kernel uses non-default ASPM policy 2011-11-26 09:09:52 -08:00
aic7xxx treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
aic7xxx_old Fix common misspellings 2011-03-31 11:26:23 -03:00
aic94xx [SCSI] aic94xx: world-writable sysfs update_bios file 2011-05-24 13:08:39 -04:00
arcmsr [SCSI] arcmsr: simplify assumptions in dma_alloc_coherent() 2011-05-01 16:32:23 -05:00
arm Fix common misspellings 2011-03-31 11:26:23 -03:00
be2iscsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
bfa [SCSI] bfa: kdump fix 2011-05-24 12:38:02 -04:00
bnx2fc bnx2fc: scsi_dma_unmap() not invoked on IO completions 2011-10-03 11:41:05 -07:00
bnx2i [SCSI] bnx2i: Optimized the iSCSI offload performance 2011-05-24 12:41:10 -04:00
cxgbi net: fix NULL dereferences in check_peer_redir() 2012-02-13 11:06:13 -08:00
device_handler scsi_dh: check queuedata pointer before proceeding further 2011-11-11 09:37:02 -08:00
dpt Fix common misspellings 2011-03-31 11:26:23 -03:00
fcoe SCSI: fcoe: Fix preempt count leak in fcoe_filter_frames() 2012-01-06 14:13:47 -08:00
fnic Fix common misspellings 2011-03-31 11:26:23 -03:00
ibmvscsi [SCSI] ibmvfc: Fix Virtual I/O failover hang 2011-06-29 12:08:39 -05:00
isci isci: fix oem parameter validation on single controller skus 2012-06-01 15:13:00 +08:00
libfc libfc: Enhancement to RPORT state machine applicable only for VN2VN mode 2011-10-03 11:40:48 -07:00
libsas SCSI: libsas: fix sas_discover_devices return code handling 2012-08-09 08:27:34 -07:00
lpfc lpfc 8.3.25: PCI and SR-IOV Fixes 2011-10-03 11:41:00 -07:00
megaraid megaraid_sas: Fix instance access in megasas_reset_timer 2011-11-11 09:35:24 -08:00
mpt2sas SCSI: mpt2sas: Fix for panic happening because of improper memory allocation 2012-06-01 15:12:54 +08:00
mvsas [SCSI] mvsas: add support for Task collector mode and fixed relative bugs 2011-05-01 12:08:03 -05:00
osd osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576 2012-03-12 10:32:57 -07:00
pcmcia Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2011-05-24 13:28:35 -07:00
pm8001 Merge branch 'master' into for-next 2011-04-26 10:22:59 +02:00
qla2xxx qla2xxx: Fix crash in qla2x00_abort_all_cmds() on unload 2011-10-16 14:14:53 -07:00
qla4xxx Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-05-27 19:52:57 -07:00
sym53c8xx_2 sym53c8xx: Fix NULL pointer dereference in slave_destroy 2012-01-25 17:24:59 -08:00
.gitignore
3w-9xxx.c 3w-9xxx: fix iommu_iova leak 2011-10-03 11:41:09 -07:00
3w-9xxx.h Fix common misspellings 2011-03-31 11:26:23 -03:00
3w-sas.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
3w-sas.h
3w-xxxx.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
3w-xxxx.h Fix common misspellings 2011-03-31 11:26:23 -03:00
53c700.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
53c700.h
53c700.scr Fix common misspellings 2011-03-31 11:26:23 -03:00
53c700_d.h_shipped Fix common misspellings 2011-03-31 11:26:23 -03:00
a100u2w.c Merge branch 'master' into for-next 2010-12-22 18:57:02 +01:00
a100u2w.h
a2091.c m68k/scsi: a2091 - Do not use legacy Scsi_Host.base 2010-05-26 19:51:08 +02:00
a2091.h m68k/scsi: a2091 - Kill a2091_scsiregs typedef 2010-05-26 19:51:07 +02:00
a3000.c m68k/scsi: a3000 - Do not use legacy Scsi_Host.base 2010-05-26 19:51:08 +02:00
a3000.h m68k/scsi: a3000 - Kill a3000_scsiregs typedef 2010-05-26 19:51:07 +02:00
a4000t.c m68k: amiga - A4000T SCSI platform device conversion 2010-05-26 19:51:09 +02:00
advansys.c Fix common misspellings 2011-03-31 11:26:23 -03:00
aha152x.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
aha152x.h
aha1542.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
aha1542.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
aha1740.c Fix common misspellings 2011-03-31 11:26:23 -03:00
aha1740.h
aic7xxx_old.c Fix common misspellings 2011-03-31 11:26:23 -03:00
atari_NCR5380.c Fix common misspellings 2011-03-31 11:26:23 -03:00
atari_scsi.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
atari_scsi.h
atp870u.c Fix common misspellings 2011-03-31 11:26:23 -03:00
atp870u.h
BusLogic.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
BusLogic.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
bvme6000_scsi.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
ch.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
constants.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
dc395x.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
dc395x.h Fix common misspellings 2011-03-31 11:26:23 -03:00
dmx3191d.c tree-wide: fix misspelling of "definition" in comments 2009-12-04 23:41:47 +01:00
dpt_i2o.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
dpti.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
dtc.c
dtc.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
eata.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
eata_generic.h
eata_pio.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
eata_pio.h
esp_scsi.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
esp_scsi.h
fd_mcs.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
fdomain.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fdomain.h
FlashPoint.c Fix common misspellings 2011-03-31 11:26:23 -03:00
g_NCR5380.c Fix common misspellings 2011-03-31 11:26:23 -03:00
g_NCR5380.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
g_NCR5380_mmio.c
gdth.c [SCSI] gdth: Add missing call to gdth_ioctl_free 2010-12-31 09:50:09 -06:00
gdth.h Fix common misspellings 2011-03-31 11:26:23 -03:00
gdth_ioctl.h [SCSI] gdth: Convert to use regular kernel types. 2010-01-18 10:48:16 -06:00
gdth_proc.c [SCSI] gdth: Add missing call to gdth_ioctl_free 2010-12-31 09:50:09 -06:00
gdth_proc.h [SCSI] gdth: Convert to use regular kernel types. 2010-01-18 10:48:16 -06:00
gvp11.c Fix common misspellings 2011-03-31 11:26:23 -03:00
gvp11.h m68k: amiga - GVP Series II SCSI zorro_driver conversion 2010-05-26 19:51:08 +02:00
hosts.c Make scsi_free_queue() kill pending SCSI commands 2011-11-11 09:37:02 -08:00
hpsa.c SCSI: hpsa: Fix problem with MSA2xxx devices 2012-06-01 15:12:57 +08:00
hpsa.h hpsa: do not attempt to read from a write-only register 2011-08-04 21:58:36 -07:00
hpsa_cmd.h [SCSI] hpsa: use new doorbell-bit-5 reset method 2011-05-17 11:07:01 +04:00
hptiop.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
hptiop.h
ibmmca.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
imm.c Fix common misspellings 2011-03-31 11:26:23 -03:00
imm.h
in2000.c Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
in2000.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
initio.c Fix common misspellings 2011-03-31 11:26:23 -03:00
initio.h Fix common misspellings 2011-03-31 11:26:23 -03:00
ipr.c ipr: Always initiate hard reset in kdump kernel 2011-11-11 09:35:24 -08:00
ipr.h [SCSI] ipr: Driver version 2.5.2 2011-05-01 12:10:34 -05:00
ips.c Fix common misspellings 2011-03-31 11:26:23 -03:00
ips.h Fix common misspellings 2011-03-31 11:26:23 -03:00
iscsi_boot_sysfs.c [SCSI] iscsi boot: mv iscsi_boot_sysfs to drivers/scsi 2010-08-06 10:45:07 -05:00
iscsi_tcp.c iscsi_tcp: fix locking around iscsi sk user data 2011-10-03 11:40:42 -07:00
iscsi_tcp.h [SCSI] iscsi_tcp: use iscsi_conn_get_addr_param libiscsi function 2011-02-24 12:41:10 -05:00
jazz_esp.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 isci: remove compile-time (Kconfig) silicon configuration 2011-07-03 04:04:45 -07:00
lasi700.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
libiscsi.c [SCSI] libiscsi: add helper to convert addr to string 2011-02-24 12:41:08 -05:00
libiscsi_tcp.c libiscsi_tcp: fix LLD data allocation 2011-10-03 11:41:02 -07:00
libsrp.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
mac53c94.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
mac53c94.h
mac_esp.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
mac_scsi.c
mac_scsi.h
Makefile scsi: qla4xxx needs libiscsi.o 2011-10-03 11:41:10 -07:00
megaraid.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
megaraid.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mesh.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
mesh.h
mvme16x_scsi.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
mvme147.c m68k/scsi: mvme147 - Kill obsolete HOSTS_C logic 2010-05-26 19:51:07 +02:00
mvme147.h [SCSI] mvme147: Reindentation 2010-05-02 15:55:03 -04:00
ncr53c8xx.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
ncr53c8xx.h
NCR53c406a.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
NCR5380.c Fix common misspellings 2011-03-31 11:26:23 -03:00
NCR5380.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
NCR_D700.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
NCR_D700.h
NCR_Q720.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
NCR_Q720.h
nsp32.c Fix common misspellings 2011-03-31 11:26:23 -03:00
nsp32.h Fix common misspellings 2011-03-31 11:26:23 -03:00
nsp32_debug.c treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
nsp32_io.h
osst.c [SCSI] osst: fix warning 2011-05-24 13:09:41 -04:00
osst.h Fix common misspellings 2011-03-31 11:26:23 -03:00
osst_detect.h
osst_options.h
pas16.c
pas16.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
pmcraid.c pmcraid: reject negative request size 2011-08-04 21:58:36 -07:00
pmcraid.h Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
ppa.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
ppa.h
ps3rom.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
qla1280.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
qla1280.h
qlogicfas.c
qlogicfas408.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
qlogicfas408.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
qlogicpti.c drivercore: revert addition of of_match to struct device 2011-05-18 12:32:23 -06:00
qlogicpti.h of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
raid_class.c [SCSI] raid_attrs: fix dependency problems 2010-03-03 21:17:06 +05:30
script_asm.pl
scsi.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
scsi.h
scsi_debug.c Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi_devinfo.c Blacklist Traxdata CDR4120 and IOMEGA Zip drive to avoid lock ups. 2011-08-04 21:58:35 -07:00
scsi_error.c SCSI: fix eh wakeup (scsi_schedule_eh vs scsi_restart_operations) 2012-08-09 08:27:34 -07:00
scsi_ioctl.c [SCSI] add scsi target reset support to scsi ioctl 2009-12-04 12:01:33 -06:00
scsi_lib.c SCSI: Avoid dangling pointer in scsi_requeue_command() 2012-08-09 08:27:34 -07:00
scsi_lib_dma.c [SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects 2009-12-04 12:01:30 -06:00
scsi_logging.h
scsi_module.c
scsi_netlink.c Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi_pm.c scsi_pm: Fix bug in the SCSI power management handler 2012-02-29 16:34:30 -08:00
scsi_priv.h scsi_pm: Fix bug in the SCSI power management handler 2012-02-29 16:34:30 -08:00
scsi_proc.c scsi: fix scsi_proc new kernel-doc warning 2011-05-28 23:12:11 -07:00
scsi_sas_internal.h [SCSI] scsi_transport_sas: add support for transport layer retries (TLR) 2010-02-08 17:15:19 -06:00
scsi_scan.c SCSI: fix hot unplug vs async scan race 2012-08-09 08:27:34 -07:00
scsi_sysctl.c
scsi_sysfs.c SCSI: fix hot unplug vs async scan race 2012-08-09 08:27:34 -07:00
scsi_tgt_if.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
scsi_tgt_lib.c [SCSI] esp, scsi_tgt_lib, fcoe: use list_move() instead of list_del()/list_add() combination 2011-05-01 10:20:10 -05:00
scsi_tgt_priv.h
scsi_trace.c [SCSI] scsi_trace: Decode UNMAP bit in WRITE SAME(10) 2011-05-24 12:38:36 -04:00
scsi_transport_api.h
scsi_transport_fc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-05-20 13:29:52 -07:00
scsi_transport_fc_internal.h
scsi_transport_iscsi.c [SCSI] scsi_transport_iscsi: make priv_sess file writeable only by root 2011-03-23 11:35:58 -05:00
scsi_transport_sas.c block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
scsi_transport_spi.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_transport_srp.c
scsi_transport_srp_internal.h
scsi_typedefs.h
scsi_wait_scan.c SCSI: fix scsi_wait_scan 2012-06-10 00:32:57 +09:00
scsicam.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
sd.c block: fail SCSI passthrough ioctls on partition devices 2012-01-25 17:24:54 -08:00
sd.h [SCSI] sd: Logical Block Provisioning update 2011-03-14 18:37:34 -05:00
sd_dif.c block: Make the integrity mapped property a bio flag 2010-10-15 15:49:20 +02:00
ses.c ses: requesting a fault indication 2011-08-04 21:58:35 -07:00
sg.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
sgiwd93.c update David Miller's old email address 2011-04-06 06:19:38 -07:00
sim710.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
sni_53c710.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
sr.c sr: check_events() ignore GET_EVENT when TUR says otherwise 2011-08-04 21:58:35 -07:00
sr.h sr: check_events() ignore GET_EVENT when TUR says otherwise 2011-08-04 21:58:35 -07:00
sr_ioctl.c scsi: replace sr_test_unit_ready() with scsi_test_unit_ready() 2010-12-16 17:53:39 +01:00
sr_vendor.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
st.c st: fix race in st_scsi_execute_end 2011-11-11 09:37:01 -08:00
st.h [SCSI] st: fix mdata->page_order handling 2009-12-10 08:54:13 -06:00
st_options.h
stex.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
sun3_NCR5380.c Fix common misspellings 2011-03-31 11:26:23 -03:00
sun3_scsi.c block: remove wrappers for request type/flags 2010-08-07 18:17:56 +02:00
sun3_scsi.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
sun3_scsi_vme.c block: remove wrappers for request type/flags 2010-08-07 18:17:56 +02:00
sun3x_esp.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
sun_esp.c dt/sparc: Eliminate users of of_platform_{,un}register_driver 2011-02-28 01:36:39 -07:00
sym53c416.c Fix common misspellings 2011-03-31 11:26:23 -03:00
sym53c416.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
t128.c
t128.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
tmscsim.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
tmscsim.h
u14-34f.c [SCSI] remove cmd->serial_number litter 2011-05-01 10:22:40 -05:00
ultrastor.c [SCSI] Fix Ultrastor asm snippet 2011-05-24 13:25:35 -04:00
ultrastor.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
vmw_pvscsi.c SCSI host lock push-down 2010-11-16 13:33:23 -08:00
vmw_pvscsi.h
wd33c93.c Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
wd33c93.h SCSI host lock push-down 2010-11-16 13:33:23 -08:00
wd7000.c Fix common misspellings 2011-03-31 11:26:23 -03:00
zalon.c
zorro7xx.c m68k: amiga - Zorro bus modalias support 2010-05-17 21:37:41 +02:00