OnePlus is now rolling out a hot fix OxygenOS 4.5.6 OTA for the OnePlus 5 devices which fixes the issue that was causing OnePlus 5 to reboot when calling to an emergency number.
Here's the official changelog, posted by the community moderator: "Fixed reboot caused by dialing 911 on certain OnePlus 5 units"
OnePlus says that the OTA update is incremental and will reach a small percentage of users today, other users will get it soon. Got the update? Let us know in the below comment section!