From: Can Guo <cang@qti.qualcomm.com>
To: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
hongwus@codeaurora.org, ziqichen@codeaurora.org,
linux-scsi@vger.kernel.org, kernel-team@android.com,
cang@codeaurora.org
Cc: Can Guo <cang@qti.qualcomm.com>,
Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Stanley Chu <stanley.chu@mediatek.com>,
Bean Huo <beanhuo@micron.com>, Jaegeuk Kim <jaegeuk@kernel.org>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] scsi: ufs: Fix a possible use before initialization case
Date: Tue, 8 Jun 2021 20:36:50 -0700 [thread overview]
Message-ID: <1623209820-37840-1-git-send-email-cang@qti.qualcomm.com> (raw)
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 <lkp@intel.com>
Signed-off-by: Can Guo <cang@qti.qualcomm.com>
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.
next reply other threads:[~2021-06-09 3:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 3:36 Can Guo [this message]
2021-06-09 6:29 ` Stanley Chu
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