syzbot


KASAN: slab-out-of-bounds Read in __nla_put_nohdr
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+5af9a90dad568aa9f611@syzkaller.appspotmail.com
Fix commit: 61678d28 net_sched: fix datalen for ematch
First crash: 248d, last: 248d

Cause bisection: the bug happens on the oldest tested release
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.14 KASAN: slab-out-of-bounds Read in __nla_put_nohdr C fix 2 242d 242d 1/1 fixed on 2020/02/27 08:36
linux-4.19 KASAN: slab-out-of-bounds Read in __nla_put_nohdr C fix 1 241d 241d 1/1 fixed on 2020/02/28 16:14
Patch testing requests:
Created Duration User Patch Repo Result
2020/01/22 22:04 18m xiyou.wangcong@gmail.com https://github.com/congwang/linux.git net OK

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce 2020/01/21 21:37 upstream d96d875e 8eda0b95 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-kasan-gce-386 2020/01/21 17:18 upstream d96d875e 8eda0b95 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-net-this-kasan-gce 2020/01/21 13:16 net 80892772 8eda0b95 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-net-kasan-gce 2020/01/21 14:59 net-next 17e10a15 8eda0b95 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com