syzbot suspects this issue was fixed by commit:
commit a7809ff90ce6c48598d3c4ab54eb599bec1e9c42
Author: Manivannan Sadhasivam
Date: Sat Sep 26 16:56:25 2020 +
net: qrtr: ns: Protect radix_tree_deref_slot() using rcu read locks
bisection log: https://syzkaller.appspot.com/x/bisect.txt
syzbot has bisected this bug to:
commit e42671084361302141a09284fde9bbc14fdd16bf
Author: Manivannan Sadhasivam
Date: Thu May 7 12:53:06 2020 +
net: qrtr: Do not depend on ARCH_QCOM
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=131c54a710
start commit: 7ae77150 Mer
