linux-kernel - [PATCH] platform/mellanox: Add a null pointer check in mlxbf_pmc_create

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20231127063433.1549064-1-chentao@kylinos.cn>
Date:   Mon, 27 Nov 2023 14:34:33 +0800
From:   Kunwu Chan <chentao@...inos.cn>
To:     hdegoede@...hat.com, ilpo.jarvinen@...ux.intel.com,
        vadimp@...dia.com, jiri@...nulli.us, shravankr@...dia.com
Cc:     kunwu.chan@...mail.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kunwu Chan <chentao@...inos.cn>
Subject: [PATCH] platform/mellanox: Add a null pointer check in mlxbf_pmc_create_groups

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure.

Fixes: 1a218d312e65 ("platform/mellanox: mlxbf-pmc: Add Mellanox BlueField PMC driver")
Signed-off-by: Kunwu Chan <chentao@...inos.cn>
---
 drivers/platform/mellanox/mlxbf-pmc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/platform/mellanox/mlxbf-pmc.c b/drivers/platform/mellanox/mlxbf-pmc.c
index 0b427fc24a96..59bbe5e13f6b 100644
--- a/drivers/platform/mellanox/mlxbf-pmc.c
+++ b/drivers/platform/mellanox/mlxbf-pmc.c
@@ -1882,6 +1882,8 @@ static int mlxbf_pmc_create_groups(struct device *dev, int blk_num)
 	pmc->block[blk_num].block_attr_grp.attrs = pmc->block[blk_num].block_attr;
 	pmc->block[blk_num].block_attr_grp.name = devm_kasprintf(
 		dev, GFP_KERNEL, pmc->block_name[blk_num]);
+	if (!pmc->block[blk_num].block_attr_grp.name)
+		return -ENOMEM;
 	pmc->groups[pmc->group_num] = &pmc->block[blk_num].block_attr_grp;
 	pmc->group_num++;
 
-- 
2.34.1