syzbot


WARNING: refcount bug in tcindex_data_put
Status: fixed on 2020/05/10 10:41
Reported-by: syzbot+8325e509a1bf83ec741d@syzkaller.appspotmail.com
Fix commit: a8eab6d35e22 net_sched: fix a missing refcnt in tcindex_init()
First crash: 612d, last: 610d

Cause bisection: introduced by (bisect log) :
commit 304e024216a802a7dc8ba75d36de82fa136bbf3e
Author: Cong Wang <xiyou.wangcong@gmail.com>
Date: Sat Mar 28 19:12:59 2020 +0000

  net_sched: add a temporary refcnt for struct tcindex_data

Crash: WARNING: refcount bug in process_one_work (log)
Repro: C syz .config

Sample crash report:

Crashes (27):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2020/04/01 21:08 net 304e024216a8 a34e2c33 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/04/03 22:56 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 22:33 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 16:54 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 16:54 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 16:45 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 16:45 net 468c2a100208 5ed396e6 .config log report
ci-upstream-net-this-kasan-gce 2020/04/03 01:17 net 21f64e72e707 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 22:30 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 21:43 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 21:06 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 18:18 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 17:23 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 13:46 net d61f4d61ff7f a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 08:38 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 07:55 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 06:27 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 06:06 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 03:19 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 00:38 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/02 00:28 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 20:05 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 19:56 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 19:55 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 19:47 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 19:30 net 304e024216a8 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 19:17 net 304e024216a8 a34e2c33 .config log report