syzkaller bug reproducers

Collection of syzkaller bug reproducers for Linux kernel.
A version of these reproducers also exists in linux-arts repo.

Obtained from syzbot using syz-reprolist.

To build run build.sh.
To run run run.sh.

LTP is adding a wrapper to run these tests, but it's not merged at the time of writing.

Testing should be done with KASAN, LOCKDEP, DEBUG_OBJECTS, DEBUG_VM, FAULT_INJECTION, lockup detectors and other debugging configs.