diff options
| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2013-02-08 01:57:58 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-02-22 14:11:46 +0000 |
| commit | 4ac8d4ca5d8d3bb98072be2961dd2e937e05bb11 (patch) | |
| tree | 4073e0385d0411e24737e900291176ea6a86ca5d /drivers/scsi | |
| parent | 827210ba2a368058c72cf93e66d7d8aeb55922eb (diff) | |
| download | linux-4ac8d4ca5d8d3bb98072be2961dd2e937e05bb11.tar.bz2 | |
[SCSI] qla2xxx: Correct list-iteration bug in Report-ID Acquisition codes.
Code in qla24xx_report_id_acquisition() incorrectly assumed that
upon completion of list iteration (with no match), the 'pos'
(vp) variable passed to list_for_each_entry() would be set to
NULL. In this context, if the firmware were to return an
unrecognized vp_idx, the follow-on assignments to vp-members
could result in corruption of the structure.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 2b6782d1f80b..dc0fe52c972e 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -3141,6 +3141,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, struct qla_hw_data *ha = vha->hw; scsi_qla_host_t *vp; unsigned long flags; + int found; ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10b6, "Entered %s.\n", __func__); @@ -3176,13 +3177,17 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, return; } + found = 0; spin_lock_irqsave(&ha->vport_slock, flags); - list_for_each_entry(vp, &ha->vp_list, list) - if (vp_idx == vp->vp_idx) + list_for_each_entry(vp, &ha->vp_list, list) { + if (vp_idx == vp->vp_idx) { + found = 1; break; + } + } spin_unlock_irqrestore(&ha->vport_slock, flags); - if (!vp) + if (!found) return; vp->d_id.b.domain = rptid_entry->port_id[2]; |