Subject: [PATCH v2 1/1] scsi: ufs: Fix a possible use before initialization case

From: Can Guo <[email-masked]>
Date: Tue, 8 Jun 2021 23:39:34 -0700

In ufshcd_exec_dev_cmd(), if error happens before lrpb is initialized,
then we should bail out instead of letting trace record the error.

Fixes: a45f937110fa6 ("scsi: ufs: Optimize host lock on transfer requests send/compl paths")
Reported-by: kernel test robot <[email-masked]>
Reviewed-by: Stanley Chu <[email-masked]>
Signed-off-by: Can Guo <[email-masked]>
---
Change since V1:
- Use codeaurora mail in Signed-off-by tag.

 drivers/scsi/ufs/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index fe1b5f4..0d54ab7 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2972,7 +2972,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
 
 	if (unlikely(test_bit(tag, &hba->outstanding_reqs))) {
 		err = -EBUSY;
-		goto out;
+		goto out_put_tag;
 	}
 
 	init_completion(&wait);
-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.

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