syzbot


KASAN: slab-out-of-bounds Read in macvlan_broadcast
Status: fixed on 2020/02/10 15:38
Reported-by: syzbot+7f047e57755b13ce70c2@syzkaller.appspotmail.com
Fix commit: 4a953272 macvlan: do not assume mac_header is set in macvlan_broadcast()
First crash: 89d, last: 84d

Fix bisection: fixed by (bisect log):

commit 4a953272f2d2db63bba97137b64b3f1770634e00
Author: Eric Dumazet <edumazet@google.com>
Date: Mon Jan 6 20:30:48 2020 +0000

  macvlan: do not assume mac_header is set in macvlan_broadcast()

similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 KASAN: slab-out-of-bounds Read in macvlan_broadcast C fix 10 84d 89d 1/1 fixed on 2020/02/10 15:38
upstream KASAN: slab-out-of-bounds Read in macvlan_broadcast C cause 10 86d 89d 16/17 fixed on 2020/02/18 14:31

Sample crash report:

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2020/01/08 12:29 linux-4.14.y 84f5ad46 ddc3e859 .config log report syz C davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14 2020/01/08 01:28 linux-4.14.y 84f5ad46 6738e0b3 .config log report syz C davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14 2020/01/07 20:00 linux-4.14.y 84f5ad46 1bcd407e .config log report syz C davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14 2020/01/07 08:19 linux-4.14.y 84f5ad46 53430d97 .config log report syz C davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14 2020/01/06 14:13 linux-4.14.y 84f5ad46 438e1227 .config log report syz C davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci2-linux-4-14 2020/01/11 08:33 linux-4.14.y b0cdffaa 4c04afaa .config log report davem@davemloft.net, dong.menglong@zte.com.cn, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org