Just reproduce the crash again. Still caused by the same kernel panic as
mentioned in comment 7.

** Description changed:

  Test case.
  - Flash the phone.
  - Open Telegram app.
  - Fill the account details.
  - Add a contact (if needed).
  - Select a contact to send a message.
  - Tap on the clip to attach a photo.
  - Select the camera.
  
  Expected result.
  - After accepting the permission dialog, camera app allows to take a picture.
  
  Actual result.
  - After accepting the permission dialog, phone reboots.
  
  I'm not sure whether this is a problem with Telegram or with the camera.
  However, I couldn't reproduce the problem using the messaging-app. And
  once the permission dialog is accepted, the reboot is gone.
  
  com.ubuntu.telegram_2.0.8.0_armhf.click
  current build number: 259
  device name: arale
  channel: ubuntu-touch/rc-proposed/meizu.en
+ 
+ --------------------------
+ 
+ Same happens with the following steps:
+ 
+ 1. Flash device (arale) with
+ 
+ $ ubuntu-device-flash touch --device arale --channel ubuntu/rc-
+ proposed/meizu.en --recovery-image <path-to-recovery-with-adb-support>
+ --bootstrap
+ 
+ 2. Wait until flash process is done
+ 3. Go through first-start wizard
+ 4. Pass tutorial
+ 5. Directly launch camera-app, approve trust-prompt
+ 
+ Repeat 1-5 multiple times and you will see a frozen device after step 5.
+ You can verify it happened due to a kernel panic mentioned in comment
+ #7. To verify it was really the kernel panic run
+ 
+ $ sudo cat /proc/last_kmsg
+ 
+ once the device has rebooted.

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https://bugs.launchpad.net/bugs/1551811

Title:
  Opening the camera for the first time leads to reboot

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