diff options
Diffstat (limited to 'drivers/block/ublk_drv.c')
| -rw-r--r-- | drivers/block/ublk_drv.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index e85e075b5bce..6ecd728ee5ce 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -2742,14 +2742,9 @@ static int ublk_ctrl_uring_cmd_permission(struct ublk_device *ub, if (header->len < header->dev_path_len) return -EINVAL; - dev_path = kmalloc(header->dev_path_len + 1, GFP_KERNEL); - if (!dev_path) - return -ENOMEM; - - ret = -EFAULT; - if (copy_from_user(dev_path, argp, header->dev_path_len)) - goto exit; - dev_path[header->dev_path_len] = 0; + dev_path = memdup_user_nul(argp, header->dev_path_len); + if (IS_ERR(dev_path)) + return PTR_ERR(dev_path); ret = -EINVAL; switch (_IOC_NR(cmd->cmd_op)) { |