Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is five bug fixes, two of which fix long standing problems
causing crashes (sd and mvsas). The remaining three are hung (isci
race) or lost (qla2xxx, isci) devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] isci: fix breakage caused by >16byte CDB patch
[SCSI] mvsas: Fix kernel panic on tile due to unaligned data access
[SCSI] sd: fix crash when UA received on DIF enabled device
[SCSI] qla2xxx: Properly set the tagging for commands.
[SCSI] isci: Fix a race condition in the SSP task management path
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 7b08215..99d2930 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -185,7 +185,7 @@
cmd_iu->_r_c = 0;
sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cmd->cmnd,
- task->ssp_task.cmd->cmd_len / sizeof(u32));
+ (task->ssp_task.cmd->cmd_len+3) / sizeof(u32));
}
static void sci_task_request_build_ssp_task_iu(struct isci_request *ireq)
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index 9bb020a..0d30ca8 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -491,6 +491,7 @@
struct isci_tmf tmf;
int ret = TMF_RESP_FUNC_FAILED;
unsigned long flags;
+ int target_done_already = 0;
/* Get the isci_request reference from the task. Note that
* this check does not depend on the pending request list
@@ -505,9 +506,11 @@
/* If task is already done, the request isn't valid */
if (!(task->task_state_flags & SAS_TASK_STATE_DONE) &&
(task->task_state_flags & SAS_TASK_AT_INITIATOR) &&
- old_request)
+ old_request) {
idev = isci_get_device(task->dev->lldd_dev);
-
+ target_done_already = test_bit(IREQ_COMPLETE_IN_TARGET,
+ &old_request->flags);
+ }
spin_unlock(&task->task_state_lock);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
@@ -561,7 +564,7 @@
if (task->task_proto == SAS_PROTOCOL_SMP ||
sas_protocol_ata(task->task_proto) ||
- test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags) ||
+ target_done_already ||
test_bit(IDEV_GONE, &idev->flags)) {
spin_unlock_irqrestore(&ihost->scic_lock, flags);
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index f14665a..6b1b4e9 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1857,11 +1857,16 @@
goto out;
}
- /* error info record present */
- if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
+ /*
+ * error info record present; slot->response is 32 bit aligned but may
+ * not be 64 bit aligned, so check for zero in two 32 bit reads
+ */
+ if (unlikely((rx_desc & RXQ_ERR)
+ && (*((u32 *)slot->response)
+ || *(((u32 *)slot->response) + 1)))) {
mv_dprintk("port %d slot %d rx_desc %X has error info"
"%016llX.\n", slot->port->sas_port.id, slot_idx,
- rx_desc, (u64)(*(u64 *)slot->response));
+ rx_desc, get_unaligned_le64(slot->response));
tstat->stat = mvs_slot_err(mvi, task, slot_idx);
tstat->resp = SAS_TASK_COMPLETE;
goto out;
diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h
index 60e2fb7..d6b19dc 100644
--- a/drivers/scsi/mvsas/mv_sas.h
+++ b/drivers/scsi/mvsas/mv_sas.h
@@ -39,6 +39,7 @@
#include <linux/irq.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
+#include <asm/unaligned.h>
#include <scsi/libsas.h>
#include <scsi/scsi.h>
#include <scsi/scsi_tcq.h>
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 42ef481..ef0a548 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -419,6 +419,8 @@
__constant_cpu_to_le16(CF_SIMPLE_TAG);
break;
}
+ } else {
+ cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG);
}
/* Load SCSI command packet. */
@@ -1307,11 +1309,11 @@
fcp_cmnd->task_attribute = TSK_ORDERED;
break;
default:
- fcp_cmnd->task_attribute = 0;
+ fcp_cmnd->task_attribute = TSK_SIMPLE;
break;
}
} else {
- fcp_cmnd->task_attribute = 0;
+ fcp_cmnd->task_attribute = TSK_SIMPLE;
}
cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
@@ -1525,7 +1527,12 @@
case ORDERED_QUEUE_TAG:
cmd_pkt->task = TSK_ORDERED;
break;
+ default:
+ cmd_pkt->task = TSK_SIMPLE;
+ break;
}
+ } else {
+ cmd_pkt->task = TSK_SIMPLE;
}
/* Load SCSI command packet. */
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 80f39b8..86fcf2c 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -838,10 +838,17 @@
static void sd_unprep_fn(struct request_queue *q, struct request *rq)
{
+ struct scsi_cmnd *SCpnt = rq->special;
+
if (rq->cmd_flags & REQ_DISCARD) {
free_page((unsigned long)rq->buffer);
rq->buffer = NULL;
}
+ if (SCpnt->cmnd != rq->cmd) {
+ mempool_free(SCpnt->cmnd, sd_cdb_pool);
+ SCpnt->cmnd = NULL;
+ SCpnt->cmd_len = 0;
+ }
}
/**
@@ -1720,21 +1727,6 @@
if (rq_data_dir(SCpnt->request) == READ && scsi_prot_sg_count(SCpnt))
sd_dif_complete(SCpnt, good_bytes);
- if (scsi_host_dif_capable(sdkp->device->host, sdkp->protection_type)
- == SD_DIF_TYPE2_PROTECTION && SCpnt->cmnd != SCpnt->request->cmd) {
-
- /* We have to print a failed command here as the
- * extended CDB gets freed before scsi_io_completion()
- * is called.
- */
- if (result)
- scsi_print_command(SCpnt);
-
- mempool_free(SCpnt->cmnd, sd_cdb_pool);
- SCpnt->cmnd = NULL;
- SCpnt->cmd_len = 0;
- }
-
return good_bytes;
}