From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-nvme@lists.infradead.org
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Subject: [PATCH] nvmet: check sscanf value for subsys serial attr
Date: Thu, 21 Nov 2019 12:31:42 -0800 [thread overview]
Message-ID: <20191121203142.537-1-chaitanya.kulkarni@wdc.com> (raw)
For nvmet in configfs.c we check return values for all the sscanf()
calls. Add similar check into the nvmet_subsys_attr_serial_store().
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
drivers/nvme/target/configfs.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c
index 98613a45bd3b..cc1fd36bf71e 100644
--- a/drivers/nvme/target/configfs.c
+++ b/drivers/nvme/target/configfs.c
@@ -853,12 +853,14 @@ static ssize_t nvmet_subsys_attr_serial_store(struct config_item *item,
const char *page, size_t count)
{
struct nvmet_subsys *subsys = to_subsys(item);
+ int ret = 0;
down_write(&nvmet_config_sem);
- sscanf(page, "%llx\n", &subsys->serial);
+ if (sscanf(page, "%llx\n", &subsys->serial) != 1)
+ ret = -EINVAL;
up_write(&nvmet_config_sem);
- return count;
+ return ret ? ret : count;
}
CONFIGFS_ATTR(nvmet_subsys_, attr_serial);
--
2.22.1
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next reply other threads:[~2019-11-21 20:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-21 20:31 Chaitanya Kulkarni [this message]
2019-11-26 16:50 ` [PATCH] nvmet: check sscanf value for subsys serial attr Christoph Hellwig
2019-11-27 6:13 ` Chaitanya Kulkarni
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