syzbot has bisected this bug to: commit 04cf31a759ef575f750a63777cee95500e410994 Author: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Date: Thu Mar 24 11:04:01 2016 +0000 ftrace: Make ftrace_location_range() global bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1538c778600000 start commit: abf02e29 Merge tag 'pm-5.2-rc6' of git://git.kernel.org/pu.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1738c778600000 console output: https://syzkaller.appspot.com/x/log.txt?x=1338c778600000 kernel config: https://syzkaller.appspot.com/x/.config?x=56f1da14935c3cce dashboard link: https://syzkaller.appspot.com/bug?extid=88533dc8b582309bf3ee syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16de5c06a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10546026a00000 Reported-by: syzbot+88533dc8b582309bf3ee@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 04cf31a759ef ("ftrace: Make ftrace_location_range() global") For information about bisection process see: https://goo.gl/tpsmEJ#bisection