From: Aleksandr Miloserdov <a.miloserdov@xxxxxxxxx>
[ Upstream commit becc4cac309dc867571f0080fde4426a6c2222e0 ]
Since model_number is allocated before it needs to be freed before
kmemdump_nul.
Reviewed-by: Konstantin Shelekhin <k.shelekhin@xxxxxxxxx>
Reviewed-by: Dmitriy Bogdanov <d.bogdanov@xxxxxxxxx>
Signed-off-by: Aleksandr Miloserdov <a.miloserdov@xxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/nvme/target/configfs.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c
index cea30e4f5053..625038057a76 100644
--- a/drivers/nvme/target/configfs.c
+++ b/drivers/nvme/target/configfs.c
@@ -1189,6 +1189,7 @@ static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys,
const char *page, size_t count)
{
int pos = 0, len;
+ char *val;
if (subsys->subsys_discovered) {
pr_err("Can't set model number. %s is already assigned\n",
@@ -1211,9 +1212,11 @@ static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys,
return -EINVAL;
}
- subsys->model_number = kmemdup_nul(page, len, GFP_KERNEL);
- if (!subsys->model_number)
+ val = kmemdup_nul(page, len, GFP_KERNEL);
+ if (!val)
return -ENOMEM;
+ kfree(subsys->model_number);
+ subsys->model_number = val;
return count;
}
--
2.35.1
