Development

Tips:

• Start your work from the Linux mainline

  • (Usually) You will send patches on top of mainline - unless it has a dependency on next
  • Check next for dependencies or to see if the problem was already fixed

• Look at fixed bugs and how they were fixed (patches)

  • Good learning experience

• Pick a newer bug

  • Old ones are harder to replicate and fix

Bug Fixing Steps

1. Pick a bug

2. Analyze it

   • Check that it hasn’t been solved

   • Stack traces and logs

   • Reproduce it. Use .config provided at syzkaller and build kernel

   • Understand the code

   • See the code paths

   • Debug using printk

3. Fix it and create a patch

   • Start working at mainline and use .config provided at Syskaller

   • Test your fix as much as you can

   • Send the patch to mentor for review

4. Send it upstream for review

   • checkpatch.pl

5. Fix suggestions from review

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Table of contents

• Commands
• Patches
• Setup