From: Hannes Reinecke hare@suse.de
[ Upstream commit f04064814c2a15c22ed9c803f9b634ef34f91092 ]
The serial number is copied into the buffer via memcpy_and_pad() with the length NVMET_SN_MAX_SIZE. So when printing out we also need to take just that length as anything beyond that will be uninitialized.
Signed-off-by: Hannes Reinecke hare@suse.de Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/target/configfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 273555127188..fa88bf9cba4d 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -1067,7 +1067,8 @@ static ssize_t nvmet_subsys_attr_serial_show(struct config_item *item, { struct nvmet_subsys *subsys = to_subsys(item);
- return snprintf(page, PAGE_SIZE, "%s\n", subsys->serial); + return snprintf(page, PAGE_SIZE, "%*s\n", + NVMET_SN_MAX_SIZE, subsys->serial); }
static ssize_t