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ac2c39824efafedca3fe02f429443cbfcd44cbaa
i2som-imx-linux/drivers/ata
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Xiaotian Feng 45ecc8ac67 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: Ben Hutchings <ben@decadent.org.uk>
2013-01-03 03:33:41 +00:00
..
acard-ahci.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
ahci_platform.c
[libata] ahci_platform: fix DT probing
2011-11-17 02:10:49 -05:00
ahci.c
ahci: Add alternate identifier for the 88SE9172
2012-09-19 15:05:22 +01:00
ahci.h
ahci: move ahci_sb600_softreset to libahci.c and rename it
2011-07-23 17:57:36 -04:00
ata_generic.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
ata_piix.c
ata_piix: unify code for programming PIO and MWDMA timings
2011-10-14 13:37:36 -04:00
Kconfig
pata_of_platform: Add missing CONFIG_OF_IRQ dependency.
2011-12-22 15:00:32 -05:00
libahci.c
ahci: move ahci_sb600_softreset to libahci.c and rename it
2011-07-23 17:57:36 -04:00
libata-acpi.c
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2011-08-02 21:17:02 -10:00
libata-core.c
libata: set dma_mode to 0xff in reset
2013-01-03 03:33:26 +00:00
libata-eh.c
libata: set dma_mode to 0xff in reset
2013-01-03 03:33:26 +00:00
libata-pmp.c
[libata] Issue SRST to Sil3726 PMP
2011-11-09 01:38:00 -05:00
libata-scsi.c
fix Null pointer dereference on disk error
2013-01-03 03:33:41 +00:00
libata-sff.c
libata: fix build without BMDMA
2011-11-17 02:11:42 -05:00
libata-transport.c
…
libata-transport.h
…
libata.h
…
Makefile
libata: remove no longer needed pata_qdi driver
2011-10-14 13:25:24 -04:00
pata_acpi.c
ata: remove unnecessary code
2011-07-23 18:07:27 -04:00
pata_ali.c
pata_ali: fix "Satelite" typo
2011-10-14 13:10:42 -04:00
pata_amd.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_arasan_cf.c
pata_arasan_cf: remove bogus to_platform_device() calls
2011-10-14 13:18:34 -04:00
pata_artop.c
pata_artop: add Power Management support
2011-10-14 13:32:54 -04:00
pata_at32.c
…
pata_at91.c
Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
2011-10-27 08:39:10 +02:00
pata_atiixp.c
pata_atiixp: add proper ->prereset method
2011-10-14 13:16:49 -04:00
pata_atp867x.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_bf54x.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_cmd64x.c
pata_cmd64x: documentation fix
2011-10-14 13:10:46 -04:00
pata_cmd640.c
…
pata_cs5520.c
ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
2011-07-23 17:57:36 -04:00
pata_cs5530.c
…
pata_cs5535.c
pata_cs5535: no need to program PIO0 timings during device init
2011-10-14 13:08:05 -04:00
pata_cs5536.c
…
pata_cypress.c
…
pata_efar.c
pata_efar: fix register naming used in efar_set_piomode()
2011-10-14 13:38:40 -04:00
pata_hpt3x2n.c
…
pata_hpt3x3.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_hpt37x.c
…
pata_hpt366.c
pata_hpt366: add hpt36x_find_mode() helper
2011-10-14 13:07:18 -04:00
pata_icside.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_imx.c
ata: Add iMX pata support
2011-08-18 23:57:58 -04:00
pata_isapnp.c
…
pata_it821x.c
pata_it821x: Fix RAID type display, by adding missing comma
2011-07-23 18:04:25 -04:00
pata_it8213.c
pata_it8213: fix register naming used in it8213_set_piomode()
2011-10-14 13:25:17 -04:00
pata_ixp4xx_cf.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_jmicron.c
…
pata_legacy.c
pata_legacy: correctly mask recovery field for HT6560B
2012-04-02 09:52:49 -07:00
pata_macio.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_marvell.c
…
pata_mpc52xx.c
ata: irq: Remove IRQF_DISABLED
2011-10-08 00:07:16 -04:00
pata_mpiix.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_netcell.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_ninja32.c
…
pata_ns87410.c
ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
2011-07-23 17:57:36 -04:00
pata_ns87415.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_octeon_cf.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_of_platform.c
pata_of_platform: Don't use NO_IRQ
2011-11-10 15:57:59 -05:00
pata_oldpiix.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_opti.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_optidma.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_palmld.c
…
pata_pcmcia.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_pdc202xx_old.c
…
pata_pdc2027x.c
pata_pdc2027x: add Power Management support
2011-10-14 13:32:52 -04:00
pata_piccolo.c
…
pata_platform.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_pxa.c
…
pata_radisys.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_rb532_cf.c
…
pata_rdc.c
pata_rdc: add Power Management support
2011-10-14 13:38:36 -04:00
pata_rz1000.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_samsung_cf.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
pata_sc1200.c
pata_sc1200: do not use c99 style comments
2011-10-14 13:01:42 -04:00
pata_scc.c
pata_scc: add proper cable detection method
2011-10-14 13:19:51 -04:00
pata_sch.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_serverworks.c
pata_serverworks: add serverworks_fixup()
2011-10-14 13:16:35 -04:00
pata_sil680.c
pata_sil680: minor CodingStyle fixups
2011-10-14 12:46:45 -04:00
pata_sis.c
pata_sis: code style cleanups for consistency
2011-10-08 00:07:16 -04:00
pata_sl82c105.c
pata_sl82c105: add Power Management support
2011-10-14 13:32:53 -04:00
pata_triflex.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
pata_via.c
pata_via: add via_fixup()
2011-10-14 13:22:54 -04:00
pdc_adma.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_dwc_460ex.c
drivers/ata/sata_dwc_460ex.c: add missing kfree
2011-08-18 23:58:11 -04:00
sata_fsl.c
ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
2011-07-23 17:57:36 -04:00
sata_inic162x.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_mv.c
sata_mv: use {platform|pci}_get_drvdata()
2011-10-07 23:46:20 -04:00
sata_nv.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_promise.c
sata_promise: fix hardreset lockdep error
2013-01-03 03:33:19 +00:00
sata_promise.h
…
sata_qstor.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_sil24.c
sata_sil24: Use const
2011-10-08 00:07:15 -04:00
sata_sil.c
[libata] sata_sil: fix used-uninit warning
2011-08-18 23:52:36 -04:00
sata_sis.c
sata_sis.c: trivial spelling fix
2011-11-09 01:36:49 -05:00
sata_svw.c
sata_svw: check DMA start bit before reset
2013-01-03 03:32:49 +00:00
sata_sx4.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_uli.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sata_via.c
ata: sata_via: Use dev_dbg
2011-07-23 17:57:36 -04:00
sata_vsc.c
ata: Add and use ata_print_version_once
2011-07-23 17:57:36 -04:00
sis.h
…