From: Danila Chernetsov <listdansp@mail.ru>
Date: Fri, 17 Mar 2023 17:51:09 +0000
Subject: scsi: megaraid: Fix mega_cmd_done() CMDID_INT_CMDS
Git-commit: 75cb113cd43f06aaf4f1bda0069cfd5b98e909eb
Patch-mainline: v6.4-rc1
References: git-fixes
When cmdid == CMDID_INT_CMDS, the 'cmds' pointer is NULL but is
dereferenced below.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 0f2bb84d2a68 ("[SCSI] megaraid: simplify internal command handling")
Signed-off-by: Danila Chernetsov <listdansp@mail.ru>
Link: https://lore.kernel.org/r/20230317175109.18585-1-listdansp@mail.ru
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/megaraid.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 3115ab991fc6..e92f1a73cc9b 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -1441,6 +1441,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
*/
if (cmdid == CMDID_INT_CMDS) {
scb = &adapter->int_scb;
+ cmd = scb->cmd;
list_del_init(&scb->list);
scb->state = SCB_FREE;