diff options
| author | Arun Easi <arun.easi@qlogic.com> | 2012-02-09 19:16:01 (GMT) |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-02-19 14:35:19 (GMT) |
| commit | a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b (patch) | |
| tree | da2bfb3741f4d2afe1ee2992a1d997ec7acd5bf0 /drivers/scsi/qla2xxx/qla_isr.c | |
| parent | dafdf8923fbd298cc7bd1ec00aaa69b8a5ceced0 (diff) | |
| download | linux-a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b.tar.xz | |
[SCSI] qla2xxx: Avoid invalid request queue dereference for bad response packets.
Signed-off-by: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index fdead64..f79844c 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -1883,28 +1883,34 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt) struct qla_hw_data *ha = vha->hw; const char func[] = "ERROR-IOCB"; uint16_t que = MSW(pkt->handle); - struct req_que *req = ha->req_q_map[que]; + struct req_que *req = NULL; int res = DID_ERROR << 16; ql_dbg(ql_dbg_async, vha, 0x502a, "type of error status in response: 0x%x\n", pkt->entry_status); + if (que >= ha->max_req_queues || !ha->req_q_map[que]) + goto fatal; + + req = ha->req_q_map[que]; + if (pkt->entry_status & RF_BUSY) res = DID_BUS_BUSY << 16; sp = qla2x00_get_sp_from_handle(vha, func, req, pkt); - if (sp) + if (sp) { sp->done(ha, sp, res); - else { - ql_log(ql_log_warn, vha, 0x5030, - "Error entry - invalid handle.\n"); - - if (IS_QLA82XX(ha)) - set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); - else - set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); - qla2xxx_wake_dpc(vha); + return; } +fatal: + ql_log(ql_log_warn, vha, 0x5030, + "Error entry - invalid handle/queue.\n"); + + if (IS_QLA82XX(ha)) + set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags); + else + set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); + qla2xxx_wake_dpc(vha); } /** |