Re: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv

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syzbot has bisected this bug to:

commit 3fa6f616a7a4d0bdf4d877d530456d8a5c3b109b
Author: David Ahern <dsahern@xxxxxxxxx>
Date:   Mon Aug 7 15:44:17 2017 +0000

    net: ipv4: add second dif to inet socket lookups

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=141e882ae00000
start commit:   b5069438 Merge branch 'stable/for-linus-4.17' of git://git..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=161e882ae00000
console output: https://syzkaller.appspot.com/x/log.txt?x=121e882ae00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=982e2df1b9e60b02
dashboard link: https://syzkaller.appspot.com/bug?extid=554ccde221001ab5479a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1363ccb7800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1272e2b7800000

Reported-by: syzbot+554ccde221001ab5479a@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 3fa6f616a7a4 ("net: ipv4: add second dif to inet socket lookups")

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



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