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| author | Ju, Seokmann <Seokmann.Ju@lsil.com> | 2006-07-25 08:44:58 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-07-28 13:13:50 -0500 |
| commit | aa677bc7445147f663ebde69d248a30839bada76 (patch) | |
| tree | ae8e932655e44c7b16cb1fb23ed929ce9d3bc138 | |
| parent | fbf6080225a03aa2b3671acacebdf615f1d3f6ba (diff) | |
| download | linux-3.10-aa677bc7445147f663ebde69d248a30839bada76.tar.gz linux-3.10-aa677bc7445147f663ebde69d248a30839bada76.tar.bz2 linux-3.10-aa677bc7445147f663ebde69d248a30839bada76.zip | |
[SCSI] megaraid_{mm,mbox}: a fix on INQUIRY with EVPD
With this patch, driver will protect data corruption created by
INQUIRY with EVPD request to megaraid controllers. As specified in
the changelog, megaraid F/W already has fixed the issue and being
under process of release. Meanwhile, driver will protect the system
with this patch.
Signed-Off By: Seokmann Ju <seokmann.ju@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | Documentation/scsi/ChangeLog.megaraid | 7 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/mega_common.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 8 |
3 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/scsi/ChangeLog.megaraid b/Documentation/scsi/ChangeLog.megaraid index fd8939e0045..0edb048b2ea 100644 --- a/Documentation/scsi/ChangeLog.megaraid +++ b/Documentation/scsi/ChangeLog.megaraid @@ -59,6 +59,13 @@ Older Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module) > Buffer I/O error on device sda6, logical block 522067228 > attempt to access beyond end of device +2. When INQUIRY with EVPD bit set issued to the MegaRAID controller, + system memory gets corrupted. + Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set + incorrectly. + Fix: MegaRAID F/W has fixed the problem and being process of release, + soon. Meanwhile, driver will filter out the request. + Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com> Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module) Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module) diff --git a/drivers/scsi/megaraid/mega_common.h b/drivers/scsi/megaraid/mega_common.h index 12e38125b12..8cd0bd1d0f7 100644 --- a/drivers/scsi/megaraid/mega_common.h +++ b/drivers/scsi/megaraid/mega_common.h @@ -40,6 +40,9 @@ #define HBA_SIGNATURE_64_BIT 0x299 #define PCI_CONF_AMISIG64 0xa4 +#define MEGA_SCSI_INQ_EVPD 1 +#define MEGA_INVALID_FIELD_IN_CDB 0x24 + /** * scb_t - scsi command control block diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index e671af0b4f5..cd982c877da 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -1644,6 +1644,14 @@ megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) rdev->last_disp |= (1L << SCP2CHANNEL(scp)); } + if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { + scp->sense_buffer[0] = 0x70; + scp->sense_buffer[2] = ILLEGAL_REQUEST; + scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; + scp->result = CHECK_CONDITION << 1; + return NULL; + } + /* Fall through */ case READ_CAPACITY: |