Re: BUG: unable to handle kernel paging request in is_bpf_text_address

From: syzbot
Date: Fri Oct 18 2019 - 06:27:03 EST


syzbot has bisected this bug to:

commit 6c4fc209fcf9d27efbaa48368773e4d2bfbd59aa
Author: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Date: Sat Dec 15 23:49:47 2018 +0000

bpf: remove useless version check for prog load

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14306908e00000
start commit: 283ea345 coccinelle: api/devm_platform_ioremap_resource: r..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=16306908e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12306908e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0a8b0a0736a2ac1
dashboard link: https://syzkaller.appspot.com/bug?extid=710043c5d1d5b5013bc7
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142676bb600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11a2cebb600000

Reported-by: syzbot+710043c5d1d5b5013bc7@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 6c4fc209fcf9 ("bpf: remove useless version check for prog load")

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