syzbot has bisected this issue to: commit 5e9eeccc58f3e6bcc99b929670665d2ce047e9c9 Author: Tuong Lien <tuong.t.lien@xxxxxxxxxxxxxx> Date: Wed Jun 3 05:06:01 2020 +0000 tipc: fix NULL pointer dereference in streaming bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14641620900000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16641620900000 console output: https://syzkaller.appspot.com/x/log.txt?x=12641620900000 kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 Reported-by: syzbot+3654c027d861c6df4b06@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 5e9eeccc58f3 ("tipc: fix NULL pointer dereference in streaming") For information about bisection process see: https://goo.gl/tpsmEJ#bisection