syzbot


KASAN: use-after-free Read in vlan_dev_get_iflink
Status: upstream: reported C repro on 2020/07/23 18:12
Reported-by: syzbot+d702fd2351989927037c@syzkaller.appspotmail.com
First crash: 19d, last: 1d07h

Cause bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in vlan_dev_get_iflink C 4 3d09h 120d 0/1 upstream: reported C repro on 2020/04/13 08:02
linux-4.14 KASAN: use-after-free Read in vlan_dev_get_iflink C 4 5d12h 107d 0/1 upstream: reported C repro on 2020/04/25 21:56
Patch testing requests:
Created Duration User Patch Repo Result
2020/07/24 04:53 17m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net OK
2020/07/24 01:59 17m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net report log
2020/07/23 20:09 10m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net report log

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/08/10 12:00 upstream 9420f1ce 70301872 .config log report syz C ap420073@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-kasan-gce-root 2020/07/25 18:28 upstream 68845a55 1f7cc1ca .config log report syz C ap420073@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-kasan-gce 2020/07/23 08:38 upstream 8c26c87b 340ea530 .config log report syz C ap420073@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com