linux-kernel - [PATCH AUTOSEL 6.6 20/32] nvme-core: fix a memory leak in nvme_ns_info_from

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Message-ID: <20231204203317.2092321-20-sashal@kernel.org>
Date:   Mon,  4 Dec 2023 15:32:40 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Maurizio Lombardi <mlombard@...hat.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Kanchan Joshi <joshi.k@...sung.com>,
        Keith Busch <kbusch@...nel.org>,
        Sasha Levin <sashal@...nel.org>, linux-nvme@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.6 20/32] nvme-core: fix a memory leak in nvme_ns_info_from_identify()

From: Maurizio Lombardi <mlombard@...hat.com>

[ Upstream commit e3139cef8257fcab1725441e2fd5fd0ccb5481b1 ]

In case of error, free the nvme_id_ns structure that was allocated
by nvme_identify_ns().

Signed-off-by: Maurizio Lombardi <mlombard@...hat.com>
Reviewed-by: Sagi Grimberg <sagi@...mberg.me>
Reviewed-by: Kanchan Joshi <joshi.k@...sung.com>
Signed-off-by: Keith Busch <kbusch@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/host/core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 21783aa2ee8e1..b4521deb1c716 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1479,7 +1479,8 @@ static int nvme_ns_info_from_identify(struct nvme_ctrl *ctrl,
 	if (id->ncap == 0) {
 		/* namespace not allocated or attached */
 		info->is_removed = true;
-		return -ENODEV;
+		ret = -ENODEV;
+		goto error;
 	}
 
 	info->anagrpid = id->anagrpid;
@@ -1497,8 +1498,10 @@ static int nvme_ns_info_from_identify(struct nvme_ctrl *ctrl,
 		    !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
 			memcpy(ids->nguid, id->nguid, sizeof(ids->nguid));
 	}
+
+error:
 	kfree(id);
-	return 0;
+	return ret;
 }
 
 static int nvme_ns_info_from_id_cs_indep(struct nvme_ctrl *ctrl,
-- 
2.42.0