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| author | Boaz Harrosh <bharrosh@panasas.com> | 2009-11-16 20:47:07 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:01:46 -0600 |
| commit | 71ecb74b15377a6c0e0e6ea95d4b549580fb4d48 (patch) | |
| tree | 0fb410841016fc0b52821641ef32a06fcd443d2f /drivers/scsi/osd/osd_initiator.c | |
| parent | 2cdd6410e5a1665823f2a048fc7f8f6a8384be1d (diff) | |
| download | lwn-71ecb74b15377a6c0e0e6ea95d4b549580fb4d48.tar.gz lwn-71ecb74b15377a6c0e0e6ea95d4b549580fb4d48.zip | |
[SCSI] libosd: bug in osd_req_decode_sense_full()
The (never tested) osd_sense_attribute_identification case
has never worked. The loop was never advanced on.
Fix it to work as intended.
On 10/30/2009 04:39 PM, Roel Kluin wrote:
I found this by code analysis, searching for while
loops that test a local variable, but do not modify
the variable.
Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/osd/osd_initiator.c')
| -rw-r--r-- | drivers/scsi/osd/osd_initiator.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c index 60b7ca1e9bc0..5e90d19fddf8 100644 --- a/drivers/scsi/osd/osd_initiator.c +++ b/drivers/scsi/osd/osd_initiator.c @@ -1583,15 +1583,14 @@ int osd_req_decode_sense_full(struct osd_request *or, { struct osd_sense_attributes_data_descriptor *osadd = cur_descriptor; - int len = min(cur_len, sense_len); - int i = 0; + unsigned len = min(cur_len, sense_len); struct osd_sense_attr *pattr = osadd->sense_attrs; - while (len < 0) { + while (len >= sizeof(*pattr)) { u32 attr_page = be32_to_cpu(pattr->attr_page); u32 attr_id = be32_to_cpu(pattr->attr_id); - if (i++ == 0) { + if (!osi->attr.attr_page) { osi->attr.attr_page = attr_page; osi->attr.attr_id = attr_id; } @@ -1602,6 +1601,8 @@ int osd_req_decode_sense_full(struct osd_request *or, bad_attr_list++; max_attr--; } + + len -= sizeof(*pattr); OSD_SENSE_PRINT2( "osd_sense_attribute_identification" "attr_page=0x%x attr_id=0x%x\n", |