linux-stable.git/drivers/scsi/device_handler, branch linux-2.6.27.y

SCSI: scsi_dh: check queuedata pointer before proceeding further

2012-02-11T14:38:23+00:00

commit a18a920c70d48a8e4a2b750d8a183b3c1a4be514 upstream.

This patch validates sdev pointer in scsi_dh_activate before proceeding further.

Without this check we might see the panic as below. I have seen this
panic multiple times..

Call trace:

 #0 [ffff88007d647b50] machine_kexec at ffffffff81020902
 #1 [ffff88007d647ba0] crash_kexec at ffffffff810875b0
 #2 [ffff88007d647c70] oops_end at ffffffff8139c650
 #3 [ffff88007d647c90] __bad_area_nosemaphore at ffffffff8102dd15
 #4 [ffff88007d647d50] page_fault at ffffffff8139b8cf
    [exception RIP: scsi_dh_activate+0x82]
    RIP: ffffffffa0041922  RSP: ffff88007d647e00  RFLAGS: 00010046
    RAX: 0000000000000000  RBX: 0000000000000000  RCX: 00000000000093c5
    RDX: 00000000000093c5  RSI: ffffffffa02e6640  RDI: ffff88007cc88988
    RBP: 000000000000000f   R8: ffff88007d646000   R9: 0000000000000000
    R10: ffff880082293790  R11: 00000000ffffffff  R12: ffff88007cc88988
    R13: 0000000000000000  R14: 0000000000000286  R15: ffff880037b845e0
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
 #5 [ffff88007d647e38] run_workqueue at ffffffff81060268
 #6 [ffff88007d647e78] worker_thread at ffffffff81060386
 #7 [ffff88007d647ee8] kthread at ffffffff81064436
 #8 [ffff88007d647f48] kernel_thread at ffffffff81003fba

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley 
Signed-off-by: Dan Carpenter 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Willy Tarreau

SCSI: scsi_dh: add Dell product information into rdac device handler

2008-10-25T21:32:42+00:00

commit 650849d71ca05d55a1553fe42fb21af9dce5612b upstream.

Add Dell Powervault storage arrays into device list of rdac device
handler.

Signed-off-by: Yanqing Liu 
Signed-off-by: James Bottomley 
Cc: shyam iyer 
Signed-off-by: Greg Kroah-Hartman

[SCSI] scsi_dh: make check_sense return ADD_TO_MLQUEUE

2008-08-29T14:13:51+00:00

Change scsi_dh check_sense functions to return ADD_TO_MLQUEUE
to allow retries to occur without restriction of blk_noretry_request
check.

Signed-off-by: Mike Anderson 
Acked-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

2008-08-20T15:42:53+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (22 commits)
  [SCSI] ibmvfc: Driver version 1.0.2
  [SCSI] ibmvfc: Add details to async event log
  [SCSI] ibmvfc: Sanitize response lengths
  [SCSI] ibmvfc: Fix for lost async events
  [SCSI] ibmvfc: Fixup host state during reinit
  [SCSI] ibmvfc: Fix another hang on module removal
  [SCSI] ibmvscsi: Fixup desired DMA value for shared memory partitions
  [SCSI] megaraid_sas: remove sysfs dbg_lvl world writeable permissions
  [SCSI] qla2xxx: Update version number to 8.02.01-k7.
  [SCSI] qla2xxx: Explicitly tear-down vports during PCI remove_one().
  [SCSI] qla2xxx: Reference proper ha during SBR handling.
  [SCSI] qla2xxx: Set npiv_supported flag for FCoE HBAs.
  [SCSI] qla2xxx: Don't leak SG-DMA mappings while aborting commands.
  [SCSI] qla2xxx: Correct vport-state management issues during ISP-ABORT.
  [SCSI] qla2xxx: Correct synchronization of software/firmware fcport states.
  [SCSI] scsi_dh: Initialize lun_state in check_ownership()
  [SCSI] scsi_dh: Do not use scsilun in rdac hardware handler
  [SCSI] megaraid_sas: version and Documentation Update
  [SCSI] megaraid_sas: add new controllers (0x78 0x79)
  [SCSI] megaraid_sas: add the shutdown DCMD cmd to driver shutdown routine
  ...

[SCSI] scsi_dh: Initialize lun_state in check_ownership()

2008-08-16T15:13:34+00:00

lun_state need to be initialized inside check_ownership().

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: Do not use scsilun in rdac hardware handler

2008-08-16T15:13:33+00:00

RDAC storage controller doesn't seem to use the scsilun format. It uses
only the last byte for LUN.

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

make struct scsi_dh_devlist's static

2008-08-11T19:20:31+00:00

This patch makes several needlessly global struct scsi_dh_devlist's
static.

Signed-off-by: Adrian Bunk 
Signed-off-by: Chandra Seetharaman 
Signed-off-by: Linus Torvalds

[SCSI] replace FUNCTION with func

2008-07-27T14:31:49+00:00

[jejb: fixed up a ton of missed conversions.

 All of you are on notice this has happened, driver trees will now
 need to be rebased]

Signed-off-by: Harvey Harrison 
Cc: SCSI List 
Signed-off-by: Andrew Morton 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: create lookup cache

2008-07-26T19:14:54+00:00

Create a cache of devices that are seen in a system. This will avoid
the unnecessary traversal of the device list in the scsi_dh when there
are multiple luns of a same type.

Signed-off-by: Chandra Seetharaman 
Signed-off-by: Hannes Reinecke 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: attach to hardware handler from dm-mpath

2008-07-26T19:14:53+00:00

multipath keeps a separate device table which may be
more current than the built-in one.
So we should make sure to always call ->attach whenever
a multipath map with hardware handler is instantiated.
And we should call ->detach on removal, too.

[sekharan: update as per comments from agk]
Signed-off-by: Hannes Reinecke 
Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley