syzbot has bisected this issue to:

commit 416dacb819f59180e4d86a5550052033ebb6d72c Author: Alan Stern stern@rowland.harvard.edu Date: Wed Aug 21 17:27:12 2019 +0000

HID: hidraw: Fix invalid read in hidraw_ioctl

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=127430fcd00000 start commit: 6e5a03bc ethernet/netronome/nfp: Fix a use after free in n.. git tree: net final oops: https://syzkaller.appspot.com/x/report.txt?x=117430fcd00000 console output: https://syzkaller.appspot.com/x/log.txt?x=167430fcd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=daeff30c2474a60f dashboard link: https://syzkaller.appspot.com/bug?extid=fbf4fc11a819824e027b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bfe45ed00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1188e31ad00000

Reported-by: syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com Fixes: 416dacb819f5 ("HID: hidraw: Fix invalid read in hidraw_ioctl")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection