From: Manish Rangankar <mrangankar@marvell.com>
To: <martin.petersen@oracle.com>, <lduncan@suse.com>, <cleech@redhat.com>
Cc: <linux-scsi@vger.kernel.org>, <GR-QLogic-Storage-Upstream@marvell.com>
Subject: [PATCH 4/8] qedi: Protect active command list to avoid list corruption
Date: Mon, 7 Sep 2020 22:24:08 -0700 [thread overview]
Message-ID: <20200908052412.21917-5-mrangankar@marvell.com> (raw)
In-Reply-To: <20200908052412.21917-1-mrangankar@marvell.com>
From: Nilesh Javali <njavali@marvell.com>
Protect active command list for non i/o commands like,
login response, logout response, text response and recovery
cleanup of active list to avoid list corruption.
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
---
drivers/scsi/qedi/qedi_fw.c | 8 ++++++++
drivers/scsi/qedi/qedi_iscsi.c | 2 ++
2 files changed, 10 insertions(+)
diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c
index 34c477bda8a4..f158fde0a43c 100644
--- a/drivers/scsi/qedi/qedi_fw.c
+++ b/drivers/scsi/qedi/qedi_fw.c
@@ -59,6 +59,7 @@ static void qedi_process_logout_resp(struct qedi_ctx *qedi,
"Freeing tid=0x%x for cid=0x%x\n",
cmd->task_id, qedi_conn->iscsi_conn_id);
+ spin_lock(&qedi_conn->list_lock);
if (likely(cmd->io_cmd_in_list)) {
cmd->io_cmd_in_list = false;
list_del_init(&cmd->io_cmd);
@@ -69,6 +70,7 @@ static void qedi_process_logout_resp(struct qedi_ctx *qedi,
cmd->task_id, qedi_conn->iscsi_conn_id,
&cmd->io_cmd);
}
+ spin_unlock(&qedi_conn->list_lock);
cmd->state = RESPONSE_RECEIVED;
qedi_clear_task_idx(qedi, cmd->task_id);
@@ -122,6 +124,7 @@ static void qedi_process_text_resp(struct qedi_ctx *qedi,
"Freeing tid=0x%x for cid=0x%x\n",
cmd->task_id, qedi_conn->iscsi_conn_id);
+ spin_lock(&qedi_conn->list_lock);
if (likely(cmd->io_cmd_in_list)) {
cmd->io_cmd_in_list = false;
list_del_init(&cmd->io_cmd);
@@ -132,6 +135,7 @@ static void qedi_process_text_resp(struct qedi_ctx *qedi,
cmd->task_id, qedi_conn->iscsi_conn_id,
&cmd->io_cmd);
}
+ spin_unlock(&qedi_conn->list_lock);
cmd->state = RESPONSE_RECEIVED;
qedi_clear_task_idx(qedi, cmd->task_id);
@@ -222,11 +226,13 @@ static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
+ spin_lock(&qedi_conn->list_lock);
if (likely(qedi_cmd->io_cmd_in_list)) {
qedi_cmd->io_cmd_in_list = false;
list_del_init(&qedi_cmd->io_cmd);
qedi_conn->active_cmd_count--;
}
+ spin_unlock(&qedi_conn->list_lock);
if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
@@ -288,11 +294,13 @@ static void qedi_process_login_resp(struct qedi_ctx *qedi,
ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
+ spin_lock(&qedi_conn->list_lock);
if (likely(cmd->io_cmd_in_list)) {
cmd->io_cmd_in_list = false;
list_del_init(&cmd->io_cmd);
qedi_conn->active_cmd_count--;
}
+ spin_unlock(&qedi_conn->list_lock);
memset(task_ctx, '\0', sizeof(*task_ctx));
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c
index f815845fc568..ae86a40ca040 100644
--- a/drivers/scsi/qedi/qedi_iscsi.c
+++ b/drivers/scsi/qedi/qedi_iscsi.c
@@ -975,11 +975,13 @@ static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn)
{
struct qedi_cmd *cmd, *cmd_tmp;
+ spin_lock(&qedi_conn->list_lock);
list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
io_cmd) {
list_del_init(&cmd->io_cmd);
qedi_conn->active_cmd_count--;
}
+ spin_unlock(&qedi_conn->list_lock);
}
static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
--
2.25.0
next prev parent reply other threads:[~2020-09-08 5:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-08 5:24 [PATCH 0/8] qedi: Misc bug fixes and enhancements Manish Rangankar
2020-09-08 5:24 ` [PATCH 1/8] qedi: Use qed count from set_fp_int in msix allocation Manish Rangankar
2020-09-08 5:24 ` [PATCH 2/8] qedi: Skip f/w connection termination for pci shutdown handler Manish Rangankar
2020-09-08 5:24 ` [PATCH 3/8] qedi: Fix list_del corruption while removing active IO Manish Rangankar
2020-09-08 5:24 ` Manish Rangankar [this message]
2020-09-08 5:24 ` [PATCH 5/8] qedi: Use snprintf instead of sprintf Manish Rangankar
2020-09-08 5:24 ` [PATCH 6/8] qedi: Mark all connections for recovery on link down event Manish Rangankar
2020-09-08 5:24 ` [PATCH 7/8] qedi: Add firmware error recovery invocation support Manish Rangankar
2020-09-08 5:24 ` [PATCH 8/8] qedi: Add support for handling the pcie errors Manish Rangankar
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