linux-kernel - Re: KASAN: use-after-free Write in xfrm_hash

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Message-ID: <000000000000f66c6e058c7cd4e0@google.com>
Date:   Sat, 29 Jun 2019 14:11:00 -0700
From:   syzbot <syzbot+0165480d4ef07360eeda@...kaller.appspotmail.com>
To:     davem@...emloft.net, fw@...len.de, herbert@...dor.apana.org.au,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        steffen.klassert@...unet.com, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Write in xfrm_hash_rebuild

syzbot has bisected this bug to:

commit 1548bc4e0512700cf757192c106b3a20ab639223
Author: Florian Westphal <fw@...len.de>
Date:   Fri Jan 4 13:17:02 2019 +0000

     xfrm: policy: delete inexact policies from inexact list on hash rebuild

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1734cba9a00000
start commit:   249155c2 Merge branch 'parisc-5.2-4' of git://git.kernel.o..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=14b4cba9a00000
console output: https://syzkaller.appspot.com/x/log.txt?x=10b4cba9a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9a31528e58cc12e2
dashboard link: https://syzkaller.appspot.com/bug?extid=0165480d4ef07360eeda
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16cf37c3a00000

Reported-by: syzbot+0165480d4ef07360eeda@...kaller.appspotmail.com
Fixes: 1548bc4e0512 ("xfrm: policy: delete inexact policies from inexact  
list on hash rebuild")

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