Fabric found to be all torn up (9)
I believe the answer is:
lacerated
'torn up' is the definition.
'lacerated' can be an answer for 'torn' (lacerating is a kind of tearing). I'm unsure of the 'up' bit.
'fabric found to be all' is the wordplay.
'fabric' becomes 'lace' (lace is a kind of fabric).
'found' is a charade indicator (letters next to each other).
'to be all' becomes 'rated' (I can't explain this - if you can you should believe this answer much more).
'lace'+'rated'='LACERATED'
Can you help me to learn more?
(Other definitions for lacerated that I've seen before include "Distressed" , "badly torn" , "torn apart?" , "Cut deeply" .)