From 0bd46e22c5ec3dbfb81b60de475151e3f6b411c2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 9 Sep 2021 12:14:40 +0300 Subject: [PATCH] nvmet: fix a width vs precision bug in nvmet_subsys_attr_serial_show() This was intended to limit the number of characters printed from "subsys->serial" to NVMET_SN_MAX_SIZE. But accidentally the width specifier was used instead of the precision specifier so it only affects the alignment and not the number of characters printed. Fixes: f04064814c2a ("nvmet: fixup buffer overrun in nvmet_subsys_attr_serial()") Signed-off-by: Dan Carpenter Signed-off-by: Christoph Hellwig --- drivers/nvme/target/configfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index d784f3c..be5d8242 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -1067,7 +1067,7 @@ 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", + return snprintf(page, PAGE_SIZE, "%.*s\n", NVMET_SN_MAX_SIZE, subsys->serial); } -- 2.7.4