Re: KASAN: slab-out-of-bounds Read in usage_accumulate

[syzbot]

syzbot has bisected this bug to:

commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
Author: John Fastabend <john.fastabend@xxxxxxxxx>
Date:   Sat Jun 30 13:17:47 2018 +0000

    bpf: sockhash fix omitted bucket lock in sock_close

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=111ccbbaa00000
start commit:   156c0591 Merge tag 'linux-kselftest-5.2-rc4' of git://git...
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=131ccbbaa00000
console output: https://syzkaller.appspot.com/x/log.txt?x=151ccbbaa00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=60564cb52ab29d5b
dashboard link: https://syzkaller.appspot.com/bug?extid=b0d730107e2ca6cb952f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11a8fb61a00000

Reported-by: syzbot+b0d730107e2ca6cb952f@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")

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