nvmet: check sscanf value for subsys serial attr (d3a9b0ca) · Commits · 戴 / test

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:

drivers/nvme/target/configfs.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -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;