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linux-stable/drivers/ata
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Wei Fang 72d8c36ec3 scsi: fix race between simultaneous decrements of ->host_failed 
sas_ata_strategy_handler() adds the works of the ata error handler to
system_unbound_wq. This workqueue asynchronously runs work items, so the
ata error handler will be performed concurrently on different CPUs. In
this case, ->host_failed will be decreased simultaneously in
scsi_eh_finish_cmd() on different CPUs, and become abnormal.

It will lead to permanently inequality between ->host_failed and
->host_busy, and scsi error handler thread won't start running. IO
errors after that won't be handled.

Since all scmds must have been handled in the strategy handler, just
remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after
the strategy handler to fix this race.

Fixes: 50824d6c56 ("[SCSI] libsas: async ata-eh")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-06-08 23:08:04 -04:00
..
acard-ahci.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
ahci.c AHCI: Remove obsolete Intel Lewisburg SATA RAID device IDs 2016-03-11 12:31:49 -05:00
ahci.h ahci: Cache host controller version 2016-02-19 10:52:46 -05:00
ahci_brcmstb.c drivers: ata: wake port before DMA stop for ALPM 2016-01-25 15:20:44 -05:00
ahci_ceva.c drivers: ata: add support for Ceva sata host controller 2015-06-10 11:15:17 +09:00
ahci_da850.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_imx.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_mvebu.c ata: ahci_mvebu: add support for Armada 3700 variant 2016-02-18 12:41:17 -05:00
ahci_octeon.c libata: support AHCI on OCTEON platform 2016-02-11 10:12:04 -05:00
ahci_platform.c ata: ahci-platform: Add ports-implemented DT bindings. 2016-04-01 10:30:30 -04:00
ahci_qoriq.c ahci: qoriq: Adjust the default register values on ls1021a 2015-12-16 10:24:35 -05:00
ahci_seattle.c ata: add AMD Seattle platform driver 2016-04-13 15:14:24 -04:00
ahci_st.c ata: ahci_st: fixup layering violations / drvdata errors 2015-04-20 13:36:38 -04:00
ahci_sunxi.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_tegra.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_xgene.c ata: ahci_xgene: dereferencing uninitialized pointer in probe 2016-03-11 12:40:34 -05:00
ata_generic.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
ata_piix.c ata_piix: Add Device IDs for Intel 9 Series PCH 2014-08-28 08:53:40 -04:00
Kconfig ata: add AMD Seattle platform driver 2016-04-13 15:14:24 -04:00
libahci.c Merge branch 'for-4.6-fixes' into for-4.7 2016-05-13 17:20:48 -04:00
libahci_platform.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
libata-acpi.c ACPI and power management updates for 3.15-rc1 2014-04-01 12:48:54 -07:00
libata-core.c treewide: Fix typos in libata.xml 2016-04-13 13:38:16 -04:00
libata-eh.c scsi: fix race between simultaneous decrements of ->host_failed 2016-06-08 23:08:04 -04:00
libata-pmp.c ata: pmp: add quirk for Marvell 4140 SATA PMP 2015-07-14 17:46:38 -04:00
libata-scsi.c libata-scsi: use %*ph to dump small buffers 2016-05-09 12:30:32 -04:00
libata-sff.c libata: fix sff host state machine locking while polling 2016-02-01 11:33:21 -05:00
libata-trace.c libata: Add tracepoints 2015-03-27 11:59:22 -04:00
libata-transport.c libata: add ATA_HORKAGE_NOTRIM 2015-07-15 11:22:35 -04:00
libata-transport.h [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
libata-zpodd.c libata: zpodd: eliminate odd_can_poweroff 2014-03-14 11:23:47 -04:00
libata.h Revert "libata: Implement NCQ autosense" 2015-08-03 12:01:54 -04:00
Makefile ata: add AMD Seattle platform driver 2016-04-13 15:14:24 -04:00
pata_acpi.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ali.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_amd.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_arasan_cf.c Merge branch 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-09-02 08:00:54 -07:00
pata_artop.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_at32.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_at91.c gpio: Include linux/gpio.h instead of asm/gpio.h 2016-02-16 00:20:03 +01:00
pata_atiixp.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_atp867x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_bf54x.c gpio: Include linux/gpio.h instead of asm/gpio.h 2016-02-16 00:20:03 +01:00
pata_cmd64x.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cmd640.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cs5520.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_cs5530.c ata: Delete unnecessary checks before the function call "pci_dev_put" 2015-02-03 07:04:44 -05:00
pata_cs5535.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cs5536.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cypress.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_efar.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ep93xx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_hpt3x2n.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_hpt3x3.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_hpt37x.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_hpt366.c ata: hpt366: convert to use match_string() helper 2016-03-17 15:09:34 -07:00
pata_icside.c scsi: rename SCSI_MAX_{SG, SG_CHAIN}_SEGMENTS 2016-04-15 16:53:14 -04:00
pata_imx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_isapnp.c PNP: ata/pata_isapnp: Use module_pnp_driver to register driver 2015-03-18 22:39:17 +01:00
pata_it821x.c pata_it821x: use "const char *" for string literals 2015-10-15 10:58:53 -04:00
pata_it8213.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ixp4xx_cf.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_jmicron.c PCI: Disable async suspend/resume for JMicron multi-function SATA/AHCI 2015-08-24 15:27:11 -05:00
pata_legacy.c pata_legacy: Remove dead code 2014-03-11 08:30:53 -04:00
pata_macio.c PCI: Remove includes of asm/pci-bridge.h 2016-02-05 16:29:28 -06:00
pata_marvell.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_mpc52xx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_mpiix.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_netcell.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ninja32.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_ns87410.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ns87415.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_octeon_cf.c pata_octeon_cf: fix broken build 2015-06-08 18:03:04 +09:00
pata_of_platform.c ata: pata_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
pata_oldpiix.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_opti.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_optidma.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_palmld.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_pcmcia.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_pdc202xx_old.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_pdc2027x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_piccolo.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_platform.c ata: pata_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
pata_pxa.c ata: pata_pxa: dmaengine conversion 2015-09-10 17:02:04 -04:00
pata_radisys.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_rb532_cf.c pata-rb532-cf: get rid of the irq_to_gpio() call 2016-02-18 11:26:27 -05:00
pata_rdc.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_rz1000.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_samsung_cf.c libata: samsung_cf: fix handling platform_get_irq result 2015-09-25 11:50:15 -04:00
pata_sc1200.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_sch.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_serverworks.c pata_serverworks: disable 64-KB DMA transfers on Broadcom OSB4 IDE Controller 2014-10-07 17:10:14 -04:00
pata_sil680.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_sis.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_sl82c105.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_triflex.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_via.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pdc_adma.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_dwc_460ex.c sata_dwc_460ex: indent an if statement 2015-03-30 13:14:40 -04:00
sata_fsl.c ata/sata_fsl.c: add ATA_FLAG_NO_LOG_PAGE to blacklist the controller for log page reads 2015-12-07 10:25:57 -05:00
sata_highbank.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
sata_inic162x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_mv.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_nv.c ata:sata_nv - Change 1 to true for bool type variable. 2015-05-25 20:06:55 -04:00
sata_promise.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_promise.h
sata_qstor.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_rcar.c ata: sata_rcar: Remove obsolete platform_device_id entries 2015-11-24 09:54:36 -05:00
sata_sil.c sata_sil: disable trim 2015-11-30 10:02:49 -05:00
sata_sil24.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_sis.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_svw.c powerpc updates for 4.1 2015-04-16 13:53:32 -05:00
sata_sx4.c sata_sx4: correctly handling failed allocation 2015-12-31 21:33:42 -05:00
sata_uli.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_via.c sata_via: Implement hotplug for VT6421 2016-02-25 13:22:16 -05:00
sata_vsc.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sis.h