From: James Smart <jsmart2021@gmail.com>
Date: Mon, 27 Jan 2020 16:23:02 -0800
Subject: scsi: lpfc: Fix lpfc_io_buf resource leak in lpfc_get_scsi_buf_s4
error path
Patch-mainline: v5.7-rc1
Git-commit: 0ab384a49c548baf132ccef249f78d9c6c506380
References: bsc#1164777 bsc#1164780 bsc#1165211
If a call to lpfc_get_cmd_rsp_buf_per_hdwq returns NULL (memory allocation
failure), a previously allocated lpfc_io_buf resource is leaked.
Fix by releasing the lpfc_io_buf resource in the failure path.
Fixes: d79c9e9d4b3d ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Cc: <stable@vger.kernel.org> # v5.4+
Link: https://lore.kernel.org/r/20200128002312.16346-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/lpfc/lpfc_scsi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -671,8 +671,10 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *ph
lpfc_cmd->prot_data_type = 0;
#endif
tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd);
- if (!tmp)
+ if (!tmp) {
+ lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq);
return NULL;
+ }
lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd;
lpfc_cmd->fcp_rsp = tmp->fcp_rsp;