linux-kernel - Re: KASAN: use-after-free Read in corrupted (3)

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Message-ID: <000000000000ff8f15058c42c5fa@google.com>
Date:   Wed, 26 Jun 2019 16:55:01 -0700
From:   syzbot <syzbot+8a821b383523654227bf@...kaller.appspotmail.com>
To:     aarcange@...hat.com, akpm@...ux-foundation.org, ast@...nel.org,
        christian@...uner.io, daniel@...earbox.net, ebiederm@...ssion.com,
        elena.reshetova@...el.com, guro@...com, john.fastabend@...il.com,
        keescook@...omium.org, linux-kernel@...r.kernel.org,
        luto@...capital.net, mhocko@...e.com, mingo@...nel.org,
        namit@...are.com, netdev@...r.kernel.org, peterz@...radead.org,
        riel@...riel.com, syzkaller-bugs@...glegroups.com, wad@...omium.org
Subject: Re: KASAN: use-after-free Read in corrupted (3)

syzbot has bisected this bug to:

commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
Author: John Fastabend <john.fastabend@...il.com>
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=11bb4e3da00000
start commit:   045df37e Merge branch 'cxgb4-Reference-count-MPS-TCAM-entr..
git tree:       net-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=13bb4e3da00000
console output: https://syzkaller.appspot.com/x/log.txt?x=15bb4e3da00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dd16b8dc9d0d210c
dashboard link: https://syzkaller.appspot.com/bug?extid=8a821b383523654227bf
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1389f5b5a00000

Reported-by: syzbot+8a821b383523654227bf@...kaller.appspotmail.com
Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")

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