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Todd Poynor a2e71dcfb0 scsi: sg: recheck MMAP_IO request length with lock held 
commit 8d26f49111 upstream.

Commit 1bc0eb0446 ("scsi: sg: protect accesses to 'reserved' page
array") adds needed concurrency protection for the "reserve" buffer.
Some checks that are initially made outside the lock are replicated once
the lock is taken to ensure the checks and resulting decisions are made
using consistent state.

The check that a request with flag SG_FLAG_MMAP_IO set fits in the
reserve buffer also needs to be performed again under the lock to ensure
the reserve buffer length compared against matches the value in effect
when the request is linked to the reserve buffer.  An -ENOMEM should be
returned in this case, instead of switching over to an indirect buffer
as for non-MMAP_IO requests.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-13 14:09:45 -07:00
..
aacraid scsi: aacraid: Reorder Adapter status check 2017-03-12 06:37:26 +01:00
aic7xxx aic7xxx: Fix queue depth handling 2016-04-12 09:08:39 -07:00
aic94xx SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
arcmsr scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware 2016-11-10 16:36:35 +01:00
arm scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
be2iscsi be2iscsi: set the boot_kset pointer to NULL in case of failure 2016-04-12 09:08:39 -07:00
bfa scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
bnx2fc bnx2fc: Update version number to 2.9.6. 2015-11-09 17:32:34 -08:00
bnx2i bnx2i: Fix call trace while device reset 2015-06-02 17:15:24 -07:00
csiostor scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
cxgbi drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS 2015-11-09 15:11:24 -08:00
cxlflash scsi: cxlflash: Improve EEH recovery time 2017-05-08 07:46:02 +02:00
device_handler scsi_dh: force modular build if SCSI is a module 2016-05-04 14:48:51 -07:00
dpt
esas2r scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
fcoe scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
fnic scsi: fnic: Avoid sending reset to firmware when another reset is in progress 2017-08-06 19:19:47 -07:00
ibmvscsi scsi: ibmvfc: Fix I/O hang when port is not mapped 2016-10-22 12:26:56 +02:00
isci scsi: isci: avoid array subscript warning 2017-09-02 07:06:50 +02:00
libfc libfc: Use the correct function name in kernel-doc comment. 2015-11-09 17:15:52 -08:00
libsas scsi: libsas: fix ata xfer length 2017-04-08 09:53:31 +02:00
lpfc lpfc: Fix Device discovery failures during switch reboot test. 2017-09-02 07:06:51 +02:00
megaraid scsi: megaraid_sas: Do not set MPI2_TYPE_CUDA for JBOD FP path for FW which does not support JBOD sequence map 2017-01-09 08:07:47 +01:00
mpt3sas mpt3sas: Don't overreach ioc->reply_post[] during initialization 2017-08-06 19:19:41 -07:00
mvsas mvsas: fix misleading indentation 2017-03-18 19:09:58 +08:00
osd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
pcmcia scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
pm8001 SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
qla2xxx scsi: qla2xxx: Get mutex lock before checking optrom_state 2017-08-11 09:08:57 -07:00
qla4xxx SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
snic scsi: snic: Return error code on memory allocation failure 2017-08-06 19:19:47 -07:00
sym53c8xx_2 scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ufs SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
.gitignore
3w-9xxx.c 3w-9xxx: don't unmap bounce buffered commands 2015-10-07 10:24:48 -07:00
3w-9xxx.h 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-sas.c 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-sas.h 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-xxxx.c 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
3w-xxxx.h 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
53c700.c 53c700: fix BUG on untagged commands 2016-07-27 09:47:39 -07:00
53c700.h
53c700.scr
53c700_d.h_shipped
a100u2w.c scsi: a100u2w: trivial typo in printk 2015-08-07 15:03:42 +02:00
a100u2w.h
a2091.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
a2091.h
a3000.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
a3000.h
a4000t.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
advansys.c Merge branch 'mkp-fixes' into fixes 2015-12-03 09:32:33 -08:00
aha152x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha152x.h
aha1542.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1542.h aha1542: fix include guard and remove useless changelog 2015-04-09 18:08:31 -07:00
aha1740.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1740.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
am53c974.c am53c974: Fix crash during modprobe 2015-04-17 10:13:56 -07:00
atari_NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
atari_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
atp870u.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
atp870u.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
BusLogic.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
BusLogic.h
bvme6000_scsi.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
ch.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
constants.c scsi: fix upper bounds check of sense key in scsi_sense_key_string() 2016-09-15 08:27:54 +02:00
dc395x.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
dc395x.h
dmx3191d.c dmx3191d: Use NO_IRQ 2014-11-20 09:11:11 +01:00
dpt_i2o.c x86/vm86: Clean up vm86.h includes 2015-07-31 13:31:10 +02:00
dpti.h scsi: use 64-bit LUNs 2014-07-17 22:07:37 +02:00
dtc.c ncr5380: Drop legacy scsi.h include 2014-11-20 09:11:10 +01:00
dtc.h ncr5380: Remove *_RELEASE macros 2014-11-20 09:11:10 +01:00
eata.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
eata_generic.h
eata_pio.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
eata_pio.h
esp_scsi.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
esp_scsi.h esp_scsi: correctly detect am53c974 2014-11-24 16:13:16 +01:00
fdomain.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
fdomain.h
FlashPoint.c FlashPoint: fix build warning 2015-11-09 16:32:14 -08:00
g_NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
g_NCR5380.h ncr5380: Remove *_RELEASE macros 2014-11-20 09:11:10 +01:00
g_NCR5380_mmio.c
gdth.c scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16 2014-11-24 20:01:40 +01:00
gdth.h
gdth_ioctl.h
gdth_proc.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
gdth_proc.h
gvp11.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
gvp11.h
hosts.c Merge branch 'mkp-fixes' into fixes 2015-12-03 09:32:33 -08:00
hpsa.c hpsa: correct skipping masked peripherals 2016-10-28 03:01:33 -04:00
hpsa.h hpsa: add in sas transport class 2015-11-09 12:39:28 -05:00
hpsa_cmd.h hpsa: add in sas transport class 2015-11-09 12:39:28 -05:00
hptiop.c hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
hptiop.h hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
imm.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
imm.h
in2000.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
in2000.h
initio.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
initio.h
ipr.c ipr: Clear interrupt on croc/crocodile when running with LSI 2016-08-10 11:49:29 +02:00
ipr.h ipr: Driver version 2.6.3. 2015-11-09 19:32:41 -05:00
ips.c ips: remove pointless #warning 2015-06-02 17:24:54 -07:00
ips.h
iscsi_boot_sysfs.c [SCSI] iscsi_boot_sysfs: Fix a memory leak in iscsi_boot_destroy_kset() 2014-03-15 10:19:19 -07:00
iscsi_tcp.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
iscsi_tcp.h net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
jazz_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
Kconfig scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m 2017-05-14 13:32:57 +02:00
lasi700.c
libiscsi.c scsi: libiscsi: add lock around task lists to fix list corruption regression 2017-03-26 12:13:19 +02:00
libiscsi_tcp.c [SCSI] libiscsi: Reduce locking contention in fast path 2014-03-15 10:19:18 -07:00
mac53c94.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
mac53c94.h
mac_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
mac_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
Makefile mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs 2015-11-11 19:50:11 -05:00
megaraid.c megaraid : use dev_printk when possible 2015-08-26 07:23:04 -07:00
megaraid.h [SCSI] megaraid: simplify internal command handling 2014-03-27 08:26:31 -07:00
mesh.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
mesh.h
mvme16x_scsi.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
mvme147.c
mvme147.h
mvumi.c mvumi: 64bit value for seconds_since1970 2015-11-11 20:45:23 -05:00
mvumi.h
ncr53c8xx.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ncr53c8xx.h scsi: Remove CONFIG_SCSI_MULTI_LUN 2014-07-17 22:07:35 +02:00
NCR53c406a.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
NCR5380.h atari_NCR5380: Move static co-routine variables to host data 2014-11-20 09:11:20 +01:00
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
nsp32.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
nsp32.h
nsp32_debug.c
nsp32_io.h
osst.c scsi: remove scsi_driver owner field 2014-11-24 20:01:28 +01:00
osst.h
osst_detect.h
osst_options.h
pas16.c ncr5380: Drop legacy scsi.h include 2014-11-20 09:11:10 +01:00
pas16.h ncr5380: Remove *_RELEASE macros 2014-11-20 09:11:10 +01:00
pmcraid.c SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
pmcraid.h
ppa.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
ppa.h
ps3rom.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.c qla1280: Don't allocate 512kb of host tags 2016-05-18 17:06:52 -07:00
qla1280.h
qlogicfas.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicfas408.c
qlogicfas408.h
qlogicpti.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
scsi.h
scsi_common.c scsi_common: do not clobber fixed sense information 2016-04-12 09:09:05 -07:00
scsi_debug.c scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded 2016-11-10 16:36:35 +01:00
scsi_devinfo.c SCSI: fix new bug in scsi_dev_info_list string matching 2016-08-10 11:49:29 +02:00
scsi_dh.c scsi: use 'scsi_device_from_queue()' for scsi_dh 2017-03-12 06:37:26 +01:00
scsi_error.c scsi: fix race between simultaneous decrements of ->host_failed 2016-07-27 09:47:39 -07:00
scsi_ioctl.c scsi: return EAGAIN when resetting a device under EH 2014-11-12 11:16:12 +01:00
scsi_lib.c scsi: use 'scsi_device_from_queue()' for scsi_dh 2017-03-12 06:37:26 +01:00
scsi_lib_dma.c
scsi_logging.c scsi_logging: return void for dev_printk() functions 2015-02-04 08:00:24 -08:00
scsi_logging.h scsi: simplify scsi_log_(send|completion) 2014-11-12 11:16:05 +01:00
scsi_module.c
scsi_netlink.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
scsi_pm.c Revert "SCSI: Fix NULL pointer dereference in runtime PM" 2015-12-10 12:24:44 -05:00
scsi_priv.h scsi_dh: fix use-after-free when removing scsi device 2015-10-27 11:22:37 +09:00
scsi_proc.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_sas_internal.h
scsi_scan.c scsi: Fix use-after-free 2016-10-28 03:01:31 -04:00
scsi_sysctl.c scsi: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
scsi_sysfs.c scsi: avoid a permanent stop of the scsi device's request queue 2017-01-09 08:07:48 +01:00
scsi_trace.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_transport_api.h
scsi_transport_fc.c scsi_transport_fc: Add support for 25Gbit speed 2015-04-10 07:40:32 -07:00
scsi_transport_iscsi.c SCSI misc on 20150901 2015-09-02 12:22:54 -07:00
scsi_transport_sas.c scsi_transport_sas: Remove check for SAS expander when querying bay/enclosure IDs. 2015-09-06 11:13:41 -07:00
scsi_transport_spi.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
scsi_transport_srp.c IB/srp: Avoid using uninitialized variable 2015-07-14 13:20:09 -04:00
scsi_typedefs.h
scsicam.c scsi: PC partition tables are little endian 2014-11-12 11:15:54 +01:00
sd.c scsi: sd: Fix wrong DPOFUA disable in sd_read_cache_type 2017-07-05 14:37:16 +02:00
sd.h sd: Fix rw_max for devices that report an optimal xfer size 2016-10-28 03:01:33 -04:00
sd_dif.c block: Consolidate static integrity profile properties 2015-10-21 14:42:38 -06:00
ses.c ses: fix additional element traversal bug 2015-12-11 11:05:57 -08:00
sg.c scsi: sg: recheck MMAP_IO request length with lock held 2017-09-13 14:09:45 -07:00
sgiwd93.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sim710.c
sni_53c710.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sr.c scsi: sr: Sanity check returned mode data 2017-04-21 09:30:05 +02:00
sr.h scsi: introduce sdev_prefix_printk() 2014-11-12 11:15:57 +01:00
sr_ioctl.c sr: reduce debug noise in sr_do_ioctl 2015-01-20 19:43:24 +01:00
sr_vendor.c scsi: Implement sr_printk() 2014-07-17 22:07:39 +02:00
st.c Merge branch 'mkp-fixes' into fixes 2015-12-03 09:32:33 -08:00
st.h st: implement tape statistics 2015-06-02 08:03:25 -07:00
st_options.h
stex.c stex: Remove use of struct timeval 2015-11-09 17:42:19 -08:00
storvsc_drv.c scsi: storvsc: properly set residual data length on errors 2017-03-12 06:37:26 +01:00
sun3_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
sun3_scsi.h sun3_scsi: Move macro definitions 2014-11-20 09:11:15 +01:00
sun3_scsi_vme.c scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c 2014-05-28 12:16:28 +02:00
sun3x_esp.c arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead 2015-08-10 23:07:05 -04:00
sun_esp.c scsi: drop owner assignment from platform_drivers 2014-10-20 16:21:33 +02:00
sym53c416.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
sym53c416.h
t128.c ncr5380: Drop legacy scsi.h include 2014-11-20 09:11:10 +01:00
t128.h ncr5380: Remove *_RELEASE macros 2014-11-20 09:11:10 +01:00
u14-34f.c scsi: drop reason argument from ->change_queue_depth 2014-11-24 14:45:27 +01:00
ultrastor.c
ultrastor.h
virtio_scsi.c scsi: virtio_scsi: Reject commands when virtqueue is broken 2017-07-05 14:37:19 +02:00
vmw_pvscsi.c vmw_pscsi: simplify ->change_queue_depth 2014-11-24 14:45:28 +01:00
vmw_pvscsi.h PCI: Move PCI_VENDOR_ID_VMWARE to pci_ids.h 2014-09-24 11:52:09 -06:00
wd33c93.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
wd33c93.h
wd719x.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
wd719x.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
wd7000.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
xen-scsifront.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
zalon.c
zorro7xx.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00