linux-kernel - Re: BUG: unable to handle kernel paging request in corrupted

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Date:   Sun, 24 Jun 2018 05:36:02 -0700
From:   syzbot <syzbot+bb6ed94ce15c5cd0be00@...kaller.appspotmail.com>
To:     dvyukov@...gle.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, pbonzini@...hat.com,
        rkrcmar@...hat.com, syzkaller-bugs@...glegroups.com
Subject: Re: BUG: unable to handle kernel paging request in corrupted

syzbot has found a reproducer for the following crash on:

HEAD commit:    77072ca59fdd Merge tag 'for-linus-20180623' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12abe040400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=befbcd7305e41bb0
dashboard link: https://syzkaller.appspot.com/bug?extid=bb6ed94ce15c5cd0be00
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=1762ec7f800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1556ee38400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+bb6ed94ce15c5cd0be00@...kaller.appspotmail.com

8021q: adding VLAN 0 to HW filter on device bond0
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
8021q: adding VLAN 0 to HW filter on device team0
BUG: unable to handle kernel paging request at ffffc90001e1ee68
PGD 1da947067 P4D 1da947067 PUD 1da948067 PMD 1ad8b7067 PTE 0