On 7/22/21 2:58 PM, Theodore Ts'o wrote:
...

So I do care about this for ext4, although I don't guarantee immediate
response, as it's something that I usually end up doing on my own
time.  I do get cranky that Syzkaller makes it painful to extract out
the fuzzed file system image, and I much prefer those fuzzing systems
which provide the file system image and the C program used to trigger
the failre as two seprate files.  Or failing that, if there was some

gosh yes. I have added a patch to the syzkaller C reproducer multiple times
so that it would write out the fs image and then I could just use that
with 'mount' etc. instead of running the (unreadable) C reproducer.

trivial way to get the syzkaller reproducer program to disgorge the
file system image to a specified output file.  As a result, if I have
a choice of spending time investigating fuzzing report from a more
file-system friendly fuzzing program and syzkaller, I'll tend choose
to spend my time dealing with other file system fuzzing reports first.

-- 
~Randy