unregister_netdevice: waiting for DEV to become free

Status: fixed on 2020/08/02 06:53
Reported-by: syzbot+2bb104d4adafb1ed1a19@syzkaller.appspotmail.com
Fix commit: 5db7c8b9f9fc ipvs: fix tinfo memory leak in start_sync_thread
First crash: 2670d, last: 2231d
Fix bisection: fixed by (bisect log) :
commit 0f7f0b057417a1ff130ee218a1fcdd3356beeef9
Author: Julian Anastasov <ja@ssi.bg>
Date: Tue Jun 18 20:07:36 2019 +0000

  ipvs: fix tinfo memory leak in start_sync_thread

  
▶ ▼ Similar bugs (17)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream unregister_netdevice: waiting for DEV to become free (3) 2 syz, C 1864 2308d 2369d 15/29 fixed on 2020/04/15 17:19
upstream unregister_netdevice: waiting for DEV to become free (6) 2 syz, C error 13128 1616d 1735d 20/29 fixed on 2022/03/08 16:11
upstream unregister_netdevice: waiting for DEV to become free 2 syz, C 170521 2924d 3035d 8/29 fixed on 2018/08/08 18:10
linux-5.15 unregister_netdevice: waiting for DEV to become free missing-backport origin:upstream 2 syz, C done 10616 6h29m 1252d 0/3 upstream: reported C repro on 2023/03/07 22:57
upstream unregister_netdevice: waiting for DEV to become free (9) prio:high net 2 syz error 4654 20m 92d 0/29 upstream: reported syz repro on 2026/05/10 20:18
android-49 unregister_netdevice: waiting for DEV to become free 2 syz, C 52164 2451d 2678d 0/3 public: reported C repro on 2019/04/11 08:44
android-44 unregister_netdevice: waiting for DEV to become free 2 syz, C 4307 2513d 2678d 0/2 public: reported C repro on 2019/04/11 08:44
linux-4.14 unregister_netdevice: waiting for DEV to become free (2) fat hfsplus bfs vfs gfs2 udf xfs reiserfs sysv btrfs f2fs 2 syz, C 651522 1252d 2188d 0/1 upstream: reported C repro on 2020/08/13 09:52
android-414 unregister_netdevice: waiting for DEV to become free 2 1231 2454d 2677d 0/1 auto-closed as invalid on 2020/02/19 10:10
upstream unregister_netdevice: waiting for DEV to become free (4) 2 syz, C done 50394 1980d 2182d 19/29 fixed on 2021/03/10 01:48
linux-6.6 unregister_netdevice: waiting for DEV to become free origin:lts-only 2 syz, C inconclusive 793 2d13h 419d 0/2 upstream: reported C repro on 2025/06/18 00:40
linux-6.1 unregister_netdevice: waiting for DEV to become free origin:upstream missing-backport 2 syz, C inconclusive 5655 8h03m 1252d 0/3 upstream: reported C repro on 2023/03/07 18:05
upstream unregister_netdevice: waiting for DEV to become free (8) net 2 syz, C done 443850 96d 1158d 29/29 fixed on 2026/05/06 19:02
upstream unregister_netdevice: waiting for DEV to become free (2) 2 syz, C done 385621 2370d 2917d 15/29 fixed on 2020/02/14 01:19
linux-4.19 unregister_netdevice: waiting for DEV to become free 2 syz, C 5316 1252d 2679d 0/1 upstream: reported C repro on 2019/04/10 19:11
upstream unregister_netdevice: waiting for DEV to become free (5) 2 syz, C done 40035 1735d 1980d 20/29 fixed on 2021/11/10 00:50
upstream unregister_netdevice: waiting for DEV to become free (7) 2 syz, C inconclusive 20422 1159d 1361d 22/29 fixed on 2023/06/08 14:41

Sample crash report:
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
unregister_netdevice: waiting for lo to become free. Usage count = 1

Crashes (120):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/06/19 12:54 linux-4.14.y bb263a2a2d43 34bf9440 .config console log report syz C ci2-linux-4-14
2020/07/01 22:09 linux-4.14.y b850307b279c bed10395 .config console log report ci2-linux-4-14
2020/07/01 09:40 linux-4.14.y b850307b279c c0383ebe .config console log report ci2-linux-4-14
2020/06/14 19:04 linux-4.14.y b850307b279c 2a22c77a .config console log report ci2-linux-4-14
2020/06/12 15:59 linux-4.14.y b850307b279c 819b58b0 .config console log report ci2-linux-4-14
2020/06/12 05:14 linux-4.14.y b850307b279c 819b58b0 .config console log report ci2-linux-4-14
2020/06/07 19:53 linux-4.14.y c6db52a88798 2c2b926c .config console log report ci2-linux-4-14
2020/05/30 21:35 linux-4.14.y 4f68020fef1c 6f3e1c7c .config console log report ci2-linux-4-14
2020/05/21 23:45 linux-4.14.y a41ba30d9df2 4afdfa20 .config console log report ci2-linux-4-14
2020/05/21 10:44 linux-4.14.y a41ba30d9df2 4afdfa20 .config console log report ci2-linux-4-14
2020/05/20 10:33 linux-4.14.y a41ba30d9df2 1255f02a .config console log report ci2-linux-4-14
2020/05/14 11:41 linux-4.14.y ab9dfda23248 2d572622 .config console log report ci2-linux-4-14
2020/05/12 17:42 linux-4.14.y ab9dfda23248 a497a5b4 .config console log report ci2-linux-4-14
2020/05/09 14:41 linux-4.14.y d71f695ce745 88cb3e92 .config console log report ci2-linux-4-14
2020/04/25 01:22 linux-4.14.y 050272a0423e 03d97a1b .config console log report ci2-linux-4-14
2020/04/18 13:48 linux-4.14.y c10b57a567e4 435c6d53 .config console log report ci2-linux-4-14
2020/04/15 10:34 linux-4.14.y c10b57a567e4 3f3c5574 .config console log report ci2-linux-4-14
2020/04/02 13:28 linux-4.14.y 01364dad1d45 a34e2c33 .config console log report ci2-linux-4-14
2020/04/02 07:16 linux-4.14.y 01364dad1d45 a34e2c33 .config console log report ci2-linux-4-14
2020/03/25 18:13 linux-4.14.y 01364dad1d45 e8e6c7d2 .config console log report ci2-linux-4-14
2020/03/25 16:55 linux-4.14.y 01364dad1d45 e8e6c7d2 .config console log report ci2-linux-4-14
2020/03/20 21:16 linux-4.14.y 01364dad1d45 2c31c529 .config console log report ci2-linux-4-14
2020/03/20 03:52 linux-4.14.y 12cd844a39ed 2c31c529 .config console log report ci2-linux-4-14
2020/03/18 16:26 linux-4.14.y 12cd844a39ed 0a96a13c .config console log report ci2-linux-4-14
2020/03/16 20:25 linux-4.14.y 12cd844a39ed 749688d2 .config console log report ci2-linux-4-14
2020/03/16 01:46 linux-4.14.y 12cd844a39ed 749688d2 .config console log report ci2-linux-4-14
2020/03/15 12:48 linux-4.14.y 12cd844a39ed 749688d2 .config console log report ci2-linux-4-14
2020/03/10 18:29 linux-4.14.y 78d697fc93f9 35f53e45 .config console log report ci2-linux-4-14
2020/03/06 04:14 linux-4.14.y 78d697fc93f9 b655d91b .config console log report ci2-linux-4-14
2020/03/03 21:31 linux-4.14.y 78d697fc93f9 1f73b64b .config console log report ci2-linux-4-14
2020/03/03 05:40 linux-4.14.y 78d697fc93f9 4a4e0509 .config console log report ci2-linux-4-14
2020/02/21 02:07 linux-4.14.y 98db2bf27b9e 81230308 .config console log report ci2-linux-4-14
2020/02/20 13:17 linux-4.14.y 98db2bf27b9e 81230308 .config console log report ci2-linux-4-14
2020/02/18 08:51 linux-4.14.y 98db2bf27b9e 1ce142dc .config console log report ci2-linux-4-14
2020/02/09 22:01 linux-4.14.y e0f8b8a65a47 35f5e45e .config console log report ci2-linux-4-14
2020/02/09 13:42 linux-4.14.y e0f8b8a65a47 6ece2ea5 .config console log report ci2-linux-4-14
2020/01/31 08:13 linux-4.14.y 9fa690a2a016 5ed23f9a .config console log report ci2-linux-4-14
2020/01/10 22:09 linux-4.14.y b0cdffaa546e 532ec44e .config console log report ci2-linux-4-14
2019/12/27 11:22 linux-4.14.y e1f7d50ae3a3 be5c2c81 .config console log report ci2-linux-4-14
2019/12/25 17:42 linux-4.14.y e1f7d50ae3a3 be5c2c81 .config console log report ci2-linux-4-14
2019/12/23 21:52 linux-4.14.y e1f7d50ae3a3 be5c2c81 .config console log report ci2-linux-4-14
2019/12/23 02:27 linux-4.14.y e1f7d50ae3a3 8b967267 .config console log report ci2-linux-4-14
2019/12/21 01:17 linux-4.14.y bfb9e5c03076 34011c05 .config console log report ci2-linux-4-14
2019/12/19 15:39 linux-4.14.y bfb9e5c03076 36650b4b .config console log report ci2-linux-4-14
2019/12/15 10:35 linux-4.14.y a844dc4c5442 eef6e580 .config console log report ci2-linux-4-14
2019/11/27 17:53 linux-4.14.y 43598c571e7e 0d63f89c .config console log report ci2-linux-4-14
2019/11/21 04:20 linux-4.14.y f56f3d0e65ad 8098ea0f .config console log report ci2-linux-4-14
2019/11/19 01:11 linux-4.14.y 775d01b65b5d d5696d51 .config console log report ci2-linux-4-14
2019/11/17 20:28 linux-4.14.y 775d01b65b5d d5696d51 .config console log report ci2-linux-4-14
2019/08/31 23:42 linux-4.14.y 01fd1694b93c bad3cce2 .config console log report ci2-linux-4-14
2019/04/20 00:32 linux-4.14.y 58b454ebf81e b0e8efcb .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.