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John Garry 7ccd2c1be3 libahci: Fix possible Spectre-v1 pmp indexing in ahci_led_store() 
[ Upstream commit fae2a63737 ]

Currently smatch warns of possible Spectre-V1 issue in ahci_led_store():
drivers/ata/libahci.c:1150 ahci_led_store() warn: potential spectre issue 'pp->em_priv' (local cap)

Userspace controls @pmp from following callchain:
em_message->store()
->ata_scsi_em_message_store()
-->ap->ops->em_store()
--->ahci_led_store()

After the mask+shift @pmp is effectively an 8b value, which is used to
index into an array of length 8, so sanitize the array index.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-08-24 13:09:00 +02:00
..
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
acard-ahci.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
ahci.c ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS 2018-07-17 11:39:25 +02:00
ahci.h libahci: Allow drivers to override stop_engine 2018-06-21 04:02:49 +09:00
ahci_brcm.c ata: ahci_brcm: Avoid writing to read-only registers 2017-06-22 16:13:00 -04:00
ahci_ceva.c drivers: ata: add support for Ceva sata host controller 2015-06-10 11:15:17 +09:00
ahci_da850.c sata: ahci-da850: Fix some error handling paths in 'ahci_da850_probe()' 2017-08-16 07:38:27 -07:00
ahci_dm816.c ata: ahci: add support for DaVinci DM816 SATA controller 2017-03-24 11:40:03 -04:00
ahci_imx.c ahci: imx: fix building without hwmon or thermal 2017-01-15 18:51:12 -05:00
ahci_mtk.c ata: mediatek: add support for MediaTek SATA controller 2017-08-28 10:54:42 -07:00
ahci_mvebu.c ata: ahci: mvebu: override ahci_stop_engine for mvebu AHCI 2018-06-21 04:02:49 +09:00
ahci_octeon.c Delete redundant return value check of platform_get_resource() 2017-03-06 15:40:59 -05:00
ahci_platform.c ata: ahci_platform: Add shutdown handler 2017-08-04 13:34:14 -07:00
ahci_qoriq.c libahci: Allow drivers to override stop_engine 2018-06-21 04:02:49 +09:00
ahci_seattle.c ata: fix return value check in ahci_seattle_get_port_info() 2016-06-15 14:26:41 -04:00
ahci_st.c ahci: st: Add ports-implemented property in support 2016-08-10 12:16:49 -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 libahci: Allow drivers to override stop_engine 2018-06-21 04:02:49 +09:00
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 Fujitsu-Siemens Lifebook S6120 to short cable IDs 2017-09-18 20:32:02 -07:00
libahci.c libahci: Fix possible Spectre-v1 pmp indexing in ahci_led_store() 2018-08-24 13:09:00 +02:00
libahci_platform.c ata: ahci_platform: Add shutdown handler 2017-08-04 13:34:14 -07:00
libata-acpi.c ACPI and power management updates for 3.15-rc1 2014-04-01 12:48:54 -07:00
libata-core.c ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS 2018-07-17 11:39:25 +02:00
libata-eh.c libata: Fix command retry decision 2018-08-03 07:50:35 +02:00
libata-pmp.c ata: pmp: add quirk for Marvell 4140 SATA PMP 2015-07-14 17:46:38 -04:00
libata-scsi.c ata: Fix ZBC_OUT all bit handling 2018-07-17 11:39:24 +02:00
libata-sff.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
libata-trace.c libata: NCQ encapsulation for ZAC MANAGEMENT OUT 2016-05-09 12:36:46 -04:00
libata-transport.c libata: transport: Remove circular dependency at free time 2017-03-06 15:24:48 -05:00
libata-transport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
libata-zpodd.c libata: zpodd: small read overflow in eject_tray() 2018-06-26 08:06:32 +08:00
libata.h libata: move ata_read_log_page to libata-core.c 2017-06-05 15:29:21 -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 cs5536: add support for IDE controller variant 2017-08-11 10:35:07 -07:00
pata_arasan_cf.c drivers: ata: pata_arasan_cf: use the same name for the same lock 2016-06-28 12:49:40 -04:00
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_atiixp.c Revert "pata_atiixp: Don't use unconnected secondary port on SB600/SB700" 2017-03-27 13:52:00 -04:00
pata_atp867x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_bf54x.c ata: bf54x: cut drvdata assignment 2017-05-30 11:54:36 -04:00
pata_bk3710.c pata_bk3710: clear status bits of BMISP on chipset initialization 2017-03-30 16:13:04 +05:30
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 cs5536: add support for IDE controller variant 2017-08-11 10:35:07 -07:00
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: ep93xx: cut drvdata assignment 2017-05-30 11:54:36 -04:00
pata_falcon.c Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2017-02-21 17:21:32 -08:00
pata_ftide010.c ata: ftide010: fix resource printing 2017-06-21 18:06:18 -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: 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: fix incorrect mask when checking at cmd_high_time 2016-07-12 11:02:05 -04:00
pata_icside.c scsi: rename SCSI_MAX_{SG, SG_CHAIN}_SEGMENTS 2016-04-15 16:53:14 -04:00
pata_imx.c pata: imx: support controller modes up to PIO4 2016-11-09 11:48:58 -05:00
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: pass queued command to ->sff_data_xfer method 2017-01-10 11:11:17 -05:00
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 ata: pass queued command to ->sff_data_xfer method 2017-01-10 11:11:17 -05:00
pata_macio.c ata: constify of_device_id structures 2017-03-06 15:18:01 -05:00
pata_marvell.c ata: Use IS_ENABLED() instead of checking for built-in or module 2016-05-27 11:27:23 -04:00
pata_mpc52xx.c ata: constify of_device_id structures 2017-03-06 15:18:01 -05:00
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 pata_ninja32: Avoid corrupting status flags 2016-08-30 11:59:47 -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: use of_property_read_{bool|u32}() 2017-08-28 10:44:24 -07:00
pata_of_platform.c ata: constify of_device_id structures 2017-03-06 15:18:01 -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: pass queued command to ->sff_data_xfer method 2017-01-10 11:11:17 -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: update references for libata documentation 2017-05-16 11:25:59 -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 ata: rb532_cf: cut drvdata assignment 2017-05-30 11:54:37 -04:00
pata_rdc.c ata: declare ata_port_info structures as const 2017-06-12 14:06:34 -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 ata: samsung_cf: cut drvdata assignment 2017-05-30 11:54:37 -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: declare ata_port_info structures as const 2017-06-12 14:06:34 -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: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_dwc_460ex.c ata: dwc_460ex: cut drvdata assignment 2017-05-30 11:54:37 -04:00
sata_fsl.c ata: sata_fsl: cut drvdata assignment 2017-05-30 11:54:37 -04:00
sata_gemini.c ata: sata_gemini: Introduce explicit IDE pin control 2017-08-11 10:32:09 -07:00
sata_gemini.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sata_highbank.c libahci: Allow drivers to override stop_engine 2018-06-21 04:02:49 +09:00
sata_inic162x.c ata: declare ata_port_info structures as const 2017-06-12 14:06:34 -04:00
sata_mv.c Revert "ata: sata_mv: Convert to devm_ioremap_resource()" 2017-05-24 10:56:32 -04:00
sata_nv.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_promise.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_promise.h ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_qstor.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_rcar.c ata: sata_rcar: add gen[23] fallback compatibility strings 2017-07-15 07:07:28 -04:00
sata_sil.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_sil24.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_sis.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_svw.c ata: Convert to using %pOF instead of full_name 2017-07-18 18:02:36 -04:00
sata_sx4.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_uli.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sata_via.c sata_via: Enable optional hotplug on VT6420 2017-06-26 16:54:53 -04:00
sata_vsc.c ata: update references for libata documentation 2017-05-16 11:25:59 -04:00
sis.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00