Xiaotian Feng 26cd4d65de [libata] fix Null pointer dereference on disk error ... Following oops were observed when disk error happened: [ 4272.896937] sd 0:0:0:0: [sda] Unhandled error code [ 4272.896939] sd 0:0:0:0: [sda] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK [ 4272.896942] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 00 5a de a7 00 00 08 00 [ 4272.896951] end_request: I/O error, dev sda, sector 5955239 [ 4291.574947] BUG: unable to handle kernel NULL pointer dereference at (null) [ 4291.658305] IP: [] ahci_activity_show+0x1/0x40 [ 4291.730090] PGD 76dbbc067 PUD 6c4fba067 PMD 0 [ 4291.783408] Oops: 0000 [#1] SMP [ 4291.822100] last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/sw_activity [ 4291.934235] CPU 9 [ 4291.958301] Pid: 27942, comm: hwinfo ...... ata_scsi_find_dev could return NULL, so ata_scsi_activity_{show,store} should check if atadev is NULL. Signed-off-by: Xiaotian Feng <dannyfeng@tencent.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>		2012-12-14 09:40:34 -05:00
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acard-ahci.c
ahci_platform.c	ahci_platform: make structs static	2012-12-14 09:38:17 -05:00
ahci.c	ahci: Add identifiers for ASM106x devices	2012-09-13 00:24:29 -04:00
ahci.h	ata/ahci_platform: Add clock framework support	2012-09-13 01:10:18 -04:00
ata_generic.c
ata_piix.c	ata_piix: re-order code and remove prototypes	2012-12-03 04:57:51 -05:00
Kconfig	ata: add platform driver for Calxeda AHCI controller	2012-09-13 01:09:41 -04:00
libahci.c	ahci: convert ata_link_printk() to ata_link_warn()	2012-12-14 09:38:50 -05:00
libata-acpi.c	libata: restore acpi disable functionality	2012-12-03 04:57:15 -05:00
libata-core.c	Revert "libata: check SATA_SETTINGS log with HW Feature Ctrl"	2012-12-14 09:34:01 -05:00
libata-eh.c	libata: set dma_mode to 0xff in reset	2012-12-03 05:07:13 -05:00
libata-pmp.c
libata-scsi.c	[libata] fix Null pointer dereference on disk error	2012-12-14 09:40:34 -05:00
libata-sff.c
libata-transport.c
libata-transport.h
libata.h	ahci: implement aggressive SATA device sleep support	2012-09-13 01:08:53 -04:00
Makefile	[libata] Makefile: Fix build error in sata_highbank	2012-10-01 22:50:37 -04:00
pata_acpi.c
pata_ali.c
pata_amd.c
pata_arasan_cf.c	pata_arasan_cf: declare/use more local variables in arasan_cf_dma_start()	2012-11-28 12:40:07 -05:00
pata_artop.c
pata_at32.c
pata_at91.c
pata_atiixp.c	pata_atiixp: override cable detection on MSI E350DM-E33	2012-08-17 13:26:51 -04:00
pata_atp867x.c
pata_bf54x.c
pata_cmd64x.c	ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(	2012-11-28 12:40:15 -05:00
pata_cmd640.c
pata_cs5520.c
pata_cs5530.c
pata_cs5535.c
pata_cs5536.c	pata_cs5536: add quirk for broken udma	2012-11-28 12:38:41 -05:00
pata_cypress.c
pata_efar.c
pata_ep93xx.c	ARM: ep93xx: convert ata_<foo>_printk() to ata_<foo>_<level>()	2012-12-14 09:38:42 -05:00
pata_hpt3x2n.c
pata_hpt3x3.c
pata_hpt37x.c
pata_hpt366.c
pata_icside.c
pata_imx.c	pata_imx: convert ata_dev_printk() to ata_dev_info()	2012-12-14 09:38:46 -05:00
pata_isapnp.c
pata_it821x.c
pata_it8213.c
pata_ixp4xx_cf.c	pata_ixp4xx_cf: utilize common ata_platform_remove_one()	2012-12-03 05:15:20 -05:00
pata_jmicron.c
pata_legacy.c
pata_macio.c
pata_marvell.c
pata_mpc52xx.c	pata_mpc52xx: utilize common ata_platform_remove_one()	2012-12-03 05:15:22 -05:00
pata_mpiix.c
pata_netcell.c
pata_ninja32.c
pata_ns87410.c
pata_ns87415.c
pata_octeon_cf.c	Revert "pata_octeon_cf: perform host detach, removal on exit"	2012-12-14 09:35:51 -05:00
pata_of_platform.c	pata_of_platform: fix compile error	2012-12-03 13:53:40 -05:00
pata_oldpiix.c
pata_opti.c
pata_optidma.c
pata_palmld.c	pata_palmld: utilize common ata_platform_remove_one()	2012-12-03 05:15:35 -05:00
pata_pcmcia.c
pata_pdc202xx_old.c
pata_pdc2027x.c
pata_piccolo.c
pata_platform.c	pata_platform: remove unused remove function	2012-12-03 05:15:33 -05:00
pata_pxa.c	ARM: pxa: move platform_data definitions	2012-09-14 11:18:10 +02:00
pata_radisys.c
pata_rb532_cf.c
pata_rdc.c	pata_rdc: remove unused variable in rdc_init_one()	2012-11-28 12:38:53 -05:00
pata_rz1000.c
pata_samsung_cf.c	ARM: samsung: move platform_data definitions	2012-09-19 17:42:18 +02:00
pata_sc1200.c
pata_scc.c
pata_sch.c
pata_serverworks.c
pata_sil680.c
pata_sis.c
pata_sl82c105.c
pata_triflex.c
pata_via.c
pdc_adma.c
sata_dwc_460ex.c
sata_fsl.c	sata_fsl: add workaround for data length mismatch on freescale V2 controller	2012-09-13 01:09:19 -04:00
sata_highbank.c	sata_highbank: utilize common ata_platform_remove_one()	2012-12-03 13:53:25 -05:00
sata_inic162x.c	sata_inic162x: remove unused variable in inic_scr_read()	2012-11-28 12:39:09 -05:00
sata_mv.c	sata_mv: Fix warnings when no PCI	2012-10-01 22:53:23 -04:00
sata_nv.c
sata_promise.c	sata_promise: fix hardreset lockdep error	2012-11-28 12:37:56 -05:00
sata_promise.h
sata_qstor.c
sata_sil24.c	sata_sil24: remove unused variable from sata_sil24.c	2012-11-28 12:39:20 -05:00
sata_sil.c
sata_sis.c
sata_svw.c	sata_svw: check DMA start bit before reset	2012-11-15 23:54:41 -05:00
sata_sx4.c	sata_sx4: pdc20621_{ata|host}_sg() do not need 'tf' parameter	2012-11-28 12:39:44 -05:00
sata_uli.c
sata_via.c
sata_vsc.c
sis.h