syzbot


KMSAN: uninit-value in __nla_validate_parse (2)
Status: upstream: reported C repro on 2021/01/11 15:30
Reported-by: syzbot+2624e3778b18fc497c92@syzkaller.appspotmail.com
Fix commit: c96adff9 cls_flower: call nla_ok() before nla_next()
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci2-upstream-usb]
First crash: 17d, last: 17d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in __nla_validate_parse 2 155d 212d 0/17 auto-closed as invalid on 2020/12/21 04:46
Patch testing requests:
Created Duration User Patch Repo Result
2021/01/14 07:43 21m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master OK
2021/01/12 02:09 24m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master OK
2021/01/11 21:44 15m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master report log
2021/01/11 20:36 23m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master OK
2021/01/11 19:27 15m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master report log
2021/01/11 19:00 15m xiyou.wangcong@gmail.com patch https://github.com/google/kmsan.git master report log

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kmsan-gce 2021/01/07 15:06 https://github.com/google/kmsan.git master 73d62e81 c104d4a3 .config log report syz C davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com
ci-upstream-kmsan-gce 2021/01/07 13:41 https://github.com/google/kmsan.git master 73d62e81 c104d4a3 .config log report info davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xiyou.wangcong@gmail.com