linux-kernel - Re: WARNING in compat_copy

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Date:   Sun, 14 Apr 2019 12:20:01 -0700
From:   syzbot <syzbot+659574e7bcc7f7eb4df7@...kaller.appspotmail.com>
To:     alexl@...hat.com, bridge@...ts.linux-foundation.org,
        coreteam@...filter.org, cosimo@...lessm.com, davem@...emloft.net,
        dvyukov@...gle.com, fw@...len.de, kadlec@...ckhole.kfki.hu,
        libc-alpha@...rceware.org, linux-kernel@...r.kernel.org,
        luto@...capital.net, luto@...nel.org, mingo@...nel.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        nicholson@...lessm.com, pablo@...filter.org, peterz@...radead.org,
        raji@...ux.vnet.ibm.com, stephen@...workplumber.org,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        torvalds@...ux-foundation.org, tuliom@...ux.vnet.ibm.com
Subject: Re: WARNING in compat_copy_entries (2)

syzbot has bisected this bug to:

commit 9dea5dc921b5f4045a18c63eb92e84dc274d17eb
Author: Andy Lutomirski <luto@...nel.org>
Date:   Tue Jul 14 22:24:24 2015 +0000

     x86/entry/syscalls: Wire up 32-bit direct socket calls

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1736919f200000
start commit:   ce380619 Merge tag 'please-pull-ia64_misc' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10b6919f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=36fbc8c97ef985d3
dashboard link: https://syzkaller.appspot.com/bug?extid=659574e7bcc7f7eb4df7
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=179b4d8b800000

Reported-by: syzbot+659574e7bcc7f7eb4df7@...kaller.appspotmail.com
Fixes: 9dea5dc921b5 ("x86/entry/syscalls: Wire up 32-bit direct socket  
calls")

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