Add a check for "bdt_info". Otherwise, if one of the allocations
for "cmgr->io_bdt_pool[i]" fails, "bdt_info->bd_tbl" will cause a NULL
pointer dereference.
Fixes: 61d8658b4a43 ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.")
Cc: <stable@xxxxxxxxxxxxxxx> # v5.10+
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@xxxxxxxxx>
---
Changelog:
v2 -> v3:
1. No change.
v1 -> v2:
1. No change.
---
drivers/scsi/qedf/qedf_io.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c
index d52057b97a4f..1ed0ee4f8dde 100644
--- a/drivers/scsi/qedf/qedf_io.c
+++ b/drivers/scsi/qedf/qedf_io.c
@@ -125,7 +125,7 @@ void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr)
bd_tbl_sz = QEDF_MAX_BDS_PER_CMD * sizeof(struct scsi_sge);
for (i = 0; i < num_ios; i++) {
bdt_info = cmgr->io_bdt_pool[i];
- if (bdt_info->bd_tbl) {
+ if (bdt_info && bdt_info->bd_tbl) {
dma_free_coherent(&qedf->pdev->dev, bd_tbl_sz,
bdt_info->bd_tbl, bdt_info->bd_tbl_dma);
bdt_info->bd_tbl = NULL;
--
2.25.1
