netdev - Re: [syzbot] WARNING: kmalloc bug in hash_ipport

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Date:   Thu, 09 Sep 2021 03:32:11 -0700
From:   syzbot <syzbot+a568bbab323b96631e61@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, coreteam@...filter.org,
        davem@...emloft.net, fw@...len.de, kadlec@...filter.org,
        kuba@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        pablo@...filter.org, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, w@....eu
Subject: Re: [syzbot] WARNING: kmalloc bug in hash_ipport_create

syzbot has bisected this issue to:

commit 7661809d493b426e979f39ab512e3adf41fbcc69
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Wed Jul 14 16:45:49 2021 +0000

    mm: don't allow oversized kvmalloc() calls

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15bb0a93300000
start commit:   626bf91a292e Merge tag 'net-5.15-rc1' of git://git.kernel...
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17bb0a93300000
console output: https://syzkaller.appspot.com/x/log.txt?x=13bb0a93300000
kernel config:  https://syzkaller.appspot.com/x/.config?x=16e23f04679ec35e
dashboard link: https://syzkaller.appspot.com/bug?extid=a568bbab323b96631e61
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=178b5d0d300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16fad1dd300000

Reported-by: syzbot+a568bbab323b96631e61@...kaller.appspotmail.com
Fixes: 7661809d493b ("mm: don't allow oversized kvmalloc() calls")

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