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linux/drivers/ata
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Wei Fang d6e98a6fc8 scsi: fix race between simultaneous decrements of ->host_failed 
[ Upstream commit 72d8c36ec3 ]

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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
History 2016-07-11 11:10:54 -04:00
..
acard-ahci.c AHCI: Move host activation code into ahci_host_activate() 2014-10-06 11:43:35 -04:00
ahci.c Adding Intel Lewisburg device IDs for SATA 2016-03-07 21:29:57 -05:00
ahci.h AHCI: Do not read HOST_IRQ_STAT reg in multi-MSI mode 2014-10-06 11:43:36 -04:00
ahci_da850.c ata: libahci_platform: move port_map parameters into the AHCI structure 2014-07-30 15:39:46 -04:00
ahci_imx.c ata: libahci_platform: move port_map parameters into the AHCI structure 2014-07-30 15:39:46 -04:00
ahci_mvebu.c ata: ahci_mvebu: Fix wrongly set base address for the MBus window setting 2015-07-03 12:34:46 -04:00
ahci_platform.c ata: ahci-platform: Add ports-implemented DT bindings. 2016-05-17 14:31:17 -04:00
ahci_st.c ata: libahci_platform: move port_map parameters into the AHCI structure 2014-07-30 15:39:46 -04:00
ahci_sunxi.c ata: libahci_platform: move port_map parameters into the AHCI structure 2014-07-30 15:39:46 -04:00
ahci_tegra.c ata: ahci_tegra: Read calibration fuse 2014-08-26 10:48:27 -04:00
ahci_xgene.c ahci_xgene: Fix the endianess issue in APM X-Gene SoC AHCI SATA controller driver. 2015-01-29 17:40:45 -08:00
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: Remove ARCH_KIRKWOOD dependency 2014-09-09 14:38:32 +00:00
libahci.c libahci: save port map for forced port map 2016-05-17 14:31:09 -04:00
libahci_platform.c AHCI: Move host activation code into ahci_host_activate() 2014-10-06 11:43:35 -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 Add factory recertified Crucial M500s to blacklist 2015-09-22 15:20:20 -04:00
libata-eh.c scsi: fix race between simultaneous decrements of ->host_failed 2016-07-11 11:10:54 -04:00
libata-pmp.c ata: pmp: add quirk for Marvell 4140 SATA PMP 2015-08-27 13:25:46 -04:00
libata-scsi.c libata: fix HDIO_GET_32BIT ioctl 2016-03-07 21:13:02 -05:00
libata-sff.c libata: fix sff host state machine locking while polling 2016-03-02 15:18:54 -05:00
libata-transport.c libata: add ATA_HORKAGE_NOTRIM 2015-08-27 13:26:11 -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 scsi: use 64-bit LUNs 2014-07-17 22:07:37 +02:00
Makefile ata: Add support for the Tegra124 SATA controller 2014-07-18 17:52:33 -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 pata_arasan_cf: use dmaengine_terminate_all() API 2014-10-15 21:30:59 +05:30
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: use dev_get_platdata() 2013-07-30 08:59:24 -04:00
pata_at91.c pata_at91: fix ata_host_activate() failure handling 2014-04-02 13:17:31 -04:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_bf54x.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cs5530.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
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 drivers/ata/pata_ep93xx.c: use signed int type for result of platform_get_irq() 2014-07-17 08:36:13 -04:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_icside.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_imx.c ata: pata_imx: Use the SIMPLE_DEV_PM_OPS() macro 2014-10-04 22:06:57 -04:00
pata_isapnp.c pata_isapnp: Don't use invalid I/O ports 2013-10-07 15:17:32 -04:00
pata_it821x.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -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 DMA-API: others: use dma_set_coherent_mask() 2013-10-31 14:49:07 +00:00
pata_jmicron.c ata: Disabling the async PM for JMicron chip 363/361 2014-09-01 08:38:06 -04:00
pata_legacy.c pata_legacy: Remove dead code 2014-03-11 08:30:53 -04:00
pata_macio.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -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 2015-07-03 12:34:43 -04:00
pata_of_platform.c pata_platform: Remove useless irq_flags field 2014-08-23 13:05:08 -04:00
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 Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -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 pata_platform: Remove useless irq_flags field 2014-08-23 13:05:08 -04:00
pata_pxa.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
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 Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
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 pata_samsung_cf: change ret type to signed 2014-08-17 07:24:48 -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_scc.c pata_scc: propagate return value of scc_wait_after_reset 2014-08-18 09:15:21 -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: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -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: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_dwc_460ex.c sata_dwc_460ex: fix resource leak on error path 2015-01-29 17:40:45 -08:00
sata_fsl.c sata_fsl: fix error handling of irq_of_parse_and_map 2014-12-02 12:52:17 -05:00
sata_highbank.c AHCI: Move host activation code into ahci_host_activate() 2014-10-06 11:43:35 -04:00
sata_inic162x.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_mv.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_nv.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_promise.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_promise.h libata annotations and fixes 2008-01-23 05:24:15 -05:00
sata_qstor.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_rcar.c ata: sata_rcar: Add r8a7793 device support 2014-10-27 23:50:36 -04:00
sata_sil.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_sil24.c libata: allow sata_sil24 to opt-out of tag ordered submission 2015-01-29 17:40:42 -08:00
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 ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_sx4.c ata: remove superfluous casts 2014-03-26 12:36:53 -04:00
sata_uli.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_via.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_vsc.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sis.h libata: PATA-mode fixes for sis_sata 2007-07-02 10:17:42 -04:00