syzbot


possible deadlock in htab_lru_map_delete_node
Status: fixed on 2020/04/15 17:19
Reported-by: syzbot+a38ff3d9356388f2fb83@syzkaller.appspotmail.com
Fix commit: b9aff38de2cb bpf: Fix a potential deadlock with bpf_map_do_batch
First crash: 661d, last: 655d

Cause bisection: introduced by (bisect log) :
commit 057996380a42bb64ccc04383cfa9c0ace4ea11f0
Author: Yonghong Song <yhs@fb.com>
Date: Wed Jan 15 18:43:04 2020 +0000

  bpf: Add batch ops to all htab bpf map

Crash: possible deadlock in htab_lru_map_delete_node (log)
Repro: C syz .config

Sample crash report:

Crashes (264):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/02/18 22:00 upstream b1da3acc781c 012fbc32 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/02/16 15:44 net 2019fc96af22 cf914200 .config log report syz C
ci-upstream-bpf-kasan-gce 2020/02/16 13:48 bpf eecd618b4516 cf914200 .config log report syz C
ci-upstream-bpf-next-kasan-gce 2020/02/16 17:02 bpf-next 2019fc96af22 cf914200 .config log report syz C
ci-upstream-net-kasan-gce 2020/02/16 16:05 net-next 2019fc96af22 cf914200 .config log report syz C
ci-upstream-kasan-gce-root 2020/02/21 19:04 upstream ca7e1fd1026c bd2a74a3 .config log report syz
ci-upstream-kasan-gce-selinux-root 2020/02/20 18:16 upstream ca7e1fd1026c 81230308 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/02/19 14:45 upstream 0a44cac81050 135c18aa .config log report syz
ci-upstream-net-this-kasan-gce 2020/02/19 01:40 net 9b64208f74fb 012fbc32 .config log report syz
ci-upstream-net-kasan-gce 2020/02/18 23:37 net-next b182a66792fe 012fbc32 .config log report syz
ci-upstream-kasan-gce-smack-root 2020/02/22 00:42 upstream b0dd1eb220c0 2ffa6679 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/21 20:17 upstream ca7e1fd1026c 2ffa6679 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/21 13:38 upstream ca7e1fd1026c bd2a74a3 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/20 21:59 upstream ca7e1fd1026c bd2a74a3 .config log report
ci-upstream-kasan-gce-root 2020/02/20 07:21 upstream ca7e1fd1026c 81230308 .config log report
ci-upstream-kasan-gce-selinux-root 2020/02/19 20:31 upstream 4b205766d8fc b690a6e3 .config log report
ci-upstream-kasan-gce-root 2020/02/19 19:15 upstream 4b205766d8fc b690a6e3 .config log report
ci-upstream-net-this-kasan-gce 2020/02/19 15:59 net 9facfdb54673 b690a6e3 .config log report
ci-upstream-bpf-kasan-gce 2020/02/19 12:18 bpf 113e6b7e15e2 135c18aa .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 11:09 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 10:39 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 09:07 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 06:46 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 05:25 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 04:18 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 03:14 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/22 00:39 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 23:32 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 21:35 bpf-next e42da4c62abb 2ffa6679 .config log report
ci-upstream-net-kasan-gce 2020/02/21 16:08 net-next 5f9721a2d119 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 14:45 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 11:55 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-net-kasan-gce 2020/02/21 10:54 net-next 2e92a2d0e450 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 08:58 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 07:26 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 06:26 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 04:44 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 03:36 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/21 00:48 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 20:31 bpf-next 5327644614a1 bd2a74a3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 19:23 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 17:02 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 15:33 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 13:52 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 12:23 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 10:36 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 10:00 bpf-next 500897804a36 81230308 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 06:03 bpf-next 500897804a36 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 04:15 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 03:03 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/20 01:15 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/19 23:28 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/19 22:27 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/19 21:42 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-bpf-next-kasan-gce 2020/02/19 17:46 bpf-next 2f14b2d9dd80 b690a6e3 .config log report
ci-upstream-net-kasan-gce 2020/02/19 16:38 net-next 00796b929ce8 b690a6e3 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/02/20 21:39 linux-next f4aba10148cd bd2a74a3 .config log report