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| author |   Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2020-01-30 10:29:33 -0800 |
|---|---|---|
| committer |   Keith Busch <kbusch@kernel.org> | 2020-03-04 09:09:08 -0800 |
| commit | d3a9b0cadf8cea1746a6bf525d049198e705836a (patch) | |
| tree | 6f82fbd26503ce4afbc9c7f1c809ac991a98300f /drivers/nvme/target/configfs.c | |
| parent | nvmet: make ctrl model configurable (diff) | |
| download | linux-dev-d3a9b0cadf8cea1746a6bf525d049198e705836a.tar.xz linux-dev-d3a9b0cadf8cea1746a6bf525d049198e705836a.zip | |
nvmet: check sscanf value for subsys serial attr
For nvmet in configfs.c we check return values for all the sscanf()
calls. Add similar check into the nvmet_subsys_attr_serial_store().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 1654064deea5..7aa10788b7c8 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -849,10 +849,13 @@ static ssize_t nvmet_subsys_attr_serial_show(struct config_item *item, 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); + u64 serial; + + if (sscanf(page, "%llx\n", &serial) != 1) + return -EINVAL; down_write(&nvmet_config_sem); - sscanf(page, "%llx\n", &subsys->serial); + to_subsys(item)->serial = serial; up_write(&nvmet_config_sem); return count; |