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4673caa440bcbb71a7e978ad90bcd7c26f00a3f0
linux/drivers/ata
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Xiaotian Feng 454a7d5986 libata: fix Null pointer dereference on disk error 
commit 26cd4d65de upstream.

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>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 08:43:54 -08:00
..
acard-ahci.c
drivers/ata/acard-ahci.c: fix enum warning
2011-05-19 20:45:15 -04:00
ahci_platform.c
libata: reimplement link power management
2010-10-21 20:21:04 -04:00
ahci.c
ahci: Add alternate identifier for the 88SE9172
2012-10-02 09:47:25 -07:00
ahci.h
ahci: EM supported message type sysfs attribute
2011-04-24 11:31:31 -04:00
ata_generic.c
[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]
2011-03-02 02:36:45 -05:00
ata_piix.c
ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2)
2011-11-11 09:35:50 -08:00
Kconfig
pata_arasan_cf: Adding support for arasan compact flash host controller
2011-03-14 02:52:46 -04:00
libahci.c
ahci: change 'masking port_map' printk to KERN_WARNING level
2011-06-29 10:10:07 -07:00
libata-acpi.c
libata: remove ATA_FLAG_MMIO
2011-03-02 02:36:46 -05:00
libata-core.c
libata: set dma_mode to 0xff in reset
2013-01-17 08:43:54 -08:00
libata-eh.c
libata: set dma_mode to 0xff in reset
2013-01-17 08:43:54 -08:00
libata-pmp.c
libata-pmp: add support for Thermaltake BlackX Duet esata drive dock
2011-05-19 20:48:59 -04:00
libata-scsi.c
libata: fix Null pointer dereference on disk error
2013-01-17 08:43:54 -08:00
libata-sff.c
libata-sff: prevent irq descriptions for dummy ports
2011-05-14 14:59:54 -04:00
libata-transport.c
drivers/ata/libata-transport.c: include linux/slab.h
2010-10-21 20:21:04 -04:00
libata-transport.h
[libata] Add ATA transport class
2010-10-21 20:21:03 -04:00
libata.h
libata: plumb sas port scan into standard libata paths
2011-03-02 02:36:45 -05:00
Makefile
pata_arasan_cf: Adding support for arasan compact flash host controller
2011-03-14 02:52:46 -04:00
pata_acpi.c
libata: remove ATA_FLAG_{SRST|SATA_RESET}
2011-03-02 02:36:46 -05:00
pata_ali.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_amd.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_arasan_cf.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_artop.c
pata_artop: Fix device ID parity check
2010-09-09 14:19:18 -04:00
pata_at32.c
libata: remove ATA_FLAG_MMIO
2011-03-02 02:36:46 -05:00
pata_at91.c
pata_at91: SMC settings calculation bugfixes, support for t6z and IORDY
2011-05-14 15:00:13 -04:00
pata_atiixp.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_atp867x.c
libata-sff: separate out BMDMA irq handler
2010-05-25 19:40:24 -04:00
pata_bf54x.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_cmd64x.c
pata_cm64x: fix boot crash on parisc
2011-05-14 14:59:15 -04:00
pata_cmd640.c
pata_cmd640: implement sff_irq_check() method
2010-10-21 20:21:05 -04:00
pata_cs5520.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_cs5530.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_cs5535.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_cs5536.c
pata_cs5536: avoid implicit MSR API inclusion on x86-64
2010-12-26 19:42:15 -05:00
pata_cypress.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_efar.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_hpt3x2n.c
ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level>
2011-03-14 02:56:31 -04:00
pata_hpt3x3.c
[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]
2011-03-02 02:36:45 -05:00
pata_hpt37x.c
ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level>
2011-03-14 02:56:31 -04:00
pata_hpt366.c
ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level>
2011-03-14 02:56:31 -04:00
pata_icside.c
libata-sff: separate out BMDMA irq handler
2010-05-25 19:40:24 -04:00
pata_isapnp.c
[libata] Improve timeout handling
2009-03-24 22:52:39 -04:00
pata_it821x.c
[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]
2011-03-02 02:36:45 -05:00
pata_it8213.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_ixp4xx_cf.c
drivers: Final irq namespace conversion
2011-03-29 14:48:19 +02:00
pata_jmicron.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_legacy.c
pata_legacy: correctly mask recovery field for HT6560B
2012-04-02 09:27:13 -07:00
pata_macio.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
pata_marvell.c
pata_marvell: Add support for 88SE91A0, 88SE91A4
2011-06-24 02:07:35 -04:00
pata_mpc52xx.c
dt: Eliminate of_platform_{,un}register_driver
2011-02-28 13:22:46 -07:00
pata_mpiix.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_netcell.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_ninja32.c
[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]
2011-03-02 02:36:45 -05:00
pata_ns87410.c
libata: Pass host flags into the pci helper
2010-03-01 14:58:46 -05:00
pata_ns87415.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_octeon_cf.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
pata_of_platform.c
dt: Eliminate of_platform_{,un}register_driver
2011-02-28 13:22:46 -07:00
pata_oldpiix.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_opti.c
libata: Pass host flags into the pci helper
2010-03-01 14:58:46 -05:00
pata_optidma.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_palmld.c
Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable
2011-03-26 10:03:03 +00:00
pata_pcmcia.c
pcmcia: Convert pcmcia_device_id declarations to const
2011-05-06 07:46:22 +02:00
pata_pdc202xx_old.c
pata_pdc202xx_old: implement sff_irq_check() method
2010-10-21 20:21:06 -04:00
pata_pdc2027x.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
pata_piccolo.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_platform.c
libata-sff: clean up BMDMA initialization
2010-05-19 13:32:19 -04:00
pata_pxa.c
libata: remove ATA_FLAG_MMIO
2011-03-02 02:36:46 -05:00
pata_qdi.c
[libata] convert drivers to use ata.h mode mask defines
2009-03-24 22:13:27 -04:00
pata_radisys.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_rb532_cf.c
drivers: Final irq namespace conversion
2011-03-29 14:48:19 +02:00
pata_rdc.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_rz1000.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_samsung_cf.c
libata: remove ATA_FLAG_MMIO
2011-03-02 02:36:46 -05:00
pata_sc1200.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_scc.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
pata_sch.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_serverworks.c
libata-sff: separate out BMDMA init
2010-05-25 19:40:30 -04:00
pata_sil680.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_sis.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
pata_sl82c105.c
pata_sl82c105: implement sff_irq_check() method
2010-10-21 20:21:06 -04:00
pata_triflex.c
ATA: Don't powerdown Compaq Triflex IDE device on suspend
2011-05-19 20:46:40 -04:00
pata_via.c
pata_via: disable ATAPI DMA on AVERATEC 3200
2011-10-03 11:39:57 -07:00
pdc_adma.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_dwc_460ex.c
drivers/ata/sata_dwc_460ex: Fix typo 'corrresponding'
2011-06-23 16:40:28 -04:00
sata_fsl.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
sata_inic162x.c
libata: add @ap to ata_wait_register() and introduce ata_msleep()
2010-10-21 20:21:05 -04:00
sata_mv.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
sata_nv.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
sata_promise.c
sata_promise: fix hardreset lockdep error
2013-01-17 08:43:54 -08:00
sata_promise.h
libata annotations and fixes
2008-01-23 05:24:15 -05:00
sata_qstor.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_sil24.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_sil.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_sis.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_svw.c
sata_svw: check DMA start bit before reset
2012-12-03 12:59:15 -08:00
sata_sx4.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_uli.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sata_via.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
sata_vsc.c
libata: remove ATA_FLAG_NO_LEGACY
2011-03-02 02:36:46 -05:00
sis.h
libata: PATA-mode fixes for sis_sata
2007-07-02 10:17:42 -04:00