syzbot


INFO: task hung in synchronize_rcu
Status: upstream: reported C repro on 2019/11/07 04:32
Reported-by: syzbot+e8737aa6afd0dfccf11d@syzkaller.appspotmail.com
First crash: 753d, last: 44d

Fix bisection: failed (bisect log)
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in synchronize_rcu (3) C done 321 15d 495d 0/22 upstream: reported C repro on 2020/07/22 18:22
android-49 INFO: task hung in synchronize_rcu 1 731d 731d 0/3 auto-closed as invalid on 2020/03/28 16:57
linux-4.19 INFO: task hung in synchronize_rcu 30 21h53m 752d 0/1 upstream: reported on 2019/11/08 21:27
upstream INFO: task hung in synchronize_rcu syz done 1206 731d 757d 15/22 fixed on 2019/11/29 15:48
android-414 INFO: task hung in synchronize_rcu 1 749d 749d 0/1 auto-closed as invalid on 2020/03/10 10:42
upstream INFO: task hung in synchronize_rcu (2) 8 730d 731d 0/22 closed as invalid on 2019/11/30 16:54

Sample crash report:

Crashes (116):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2021/10/16 21:22 linux-4.14.y ed99bf0e81b5 0c5d9412 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/10/03 16:38 linux-4.14.y f11944f1aa1c db0f5787 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/06/21 01:57 linux-4.14.y cfb41ef9deb1 aba2b2fb .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/06/02 06:34 linux-4.14.y ad8397a84e1e 032639db .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/06/02 04:28 linux-4.14.y ad8397a84e1e 032639db .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/06/02 02:06 linux-4.14.y ad8397a84e1e 032639db .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/05/08 11:43 linux-4.14.y 7d7d1c0ab3eb bc5434be .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/05/05 13:13 linux-4.14.y 7d7d1c0ab3eb 06c27ff5 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/30 13:56 linux-4.14.y 7d7d1c0ab3eb 77e2b668 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/29 06:44 linux-4.14.y 670d6552eda8 a8529b82 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/15 13:20 linux-4.14.y c7150cd2fa8c cc1cff8f .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/11 13:35 linux-4.14.y 1d177c0872ab c2ca1f2a .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/03 13:10 linux-4.14.y 3242aa3a635c e5b64d68 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/22 10:45 linux-4.14.y 29c52025152b a659b3f1 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/03 12:07 linux-4.14.y 2c8a3fceddf0 624dad51 .config log report syz C INFO: task hung in synchronize_rcu
ci2-linux-4-14 2020/11/19 05:28 linux-4.14.y 8961076ed318 0767f13f .config log report syz C
ci2-linux-4-14 2020/10/29 04:10 linux-4.14.y 5b7a52cd2eef f24824d3 .config log report syz C
ci2-linux-4-14 2020/10/21 20:57 linux-4.14.y 5b7a52cd2eef 99c64d5c .config log report syz C
ci2-linux-4-14 2020/09/08 18:13 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config log report syz C
ci2-linux-4-14 2020/09/08 09:00 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config log report syz C
ci2-linux-4-14 2020/09/03 21:33 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config log report syz C
ci2-linux-4-14 2020/09/03 07:41 linux-4.14.y d7e78d08fa77 abf9ba4f .config log report syz C
ci2-linux-4-14 2020/08/31 04:26 linux-4.14.y d7e78d08fa77 d5a3ae1f .config log report syz C
ci2-linux-4-14 2020/08/30 15:19 linux-4.14.y d7e78d08fa77 d5a3ae1f .config log report syz C
ci2-linux-4-14 2020/08/21 00:19 linux-4.14.y 14b58326976d 70160577 .config log report syz C
ci2-linux-4-14 2020/08/07 20:42 linux-4.14.y 14b58326976d 28ac5c9e .config log report syz C
ci2-linux-4-14 2021/10/10 17:35 linux-4.14.y 756db2ba8bde 838e7e2c .config log report syz INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/07/05 03:32 linux-4.14.y 313e82bbefb3 55aa55c2 .config log report syz INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/13 16:15 linux-4.14.y f79dc86058bc a945f0a3 .config log report syz
ci2-linux-4-14 2020/08/06 10:00 linux-4.14.y ca4f2c56d416 0487ea6f .config log report syz
ci2-linux-4-14 2020/07/05 22:10 linux-4.14.y b850307b279c 22f87567 .config log report syz
ci2-linux-4-14 2021/05/17 04:14 linux-4.14.y 7d7d1c0ab3eb f54a5c09 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/29 19:23 linux-4.14.y 7d7d1c0ab3eb 77e2b668 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/28 09:25 linux-4.14.y cf256fbcbe34 77e2b668 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/23 11:31 linux-4.14.y cf256fbcbe34 590921a5 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/22 13:08 linux-4.14.y cf256fbcbe34 33c28d03 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/17 05:22 linux-4.14.y cf256fbcbe34 7e2b734b .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/04/08 20:34 linux-4.14.y 0cc244011f40 6a81331a .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/24 01:28 linux-4.14.y cb83ddcd5332 e613994b .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/03/18 17:34 linux-4.14.y cb83ddcd5332 7216542e .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/24 08:52 linux-4.14.y 3242aa3a635c fcc6d71b .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/21 00:15 linux-4.14.y 29c52025152b 3e5ed8b4 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/20 03:20 linux-4.14.y 29c52025152b f689d40a .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/09 18:55 linux-4.14.y 2c8a3fceddf0 2bd9619f .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/08 06:48 linux-4.14.y 2c8a3fceddf0 2ce644fc .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/07 13:58 linux-4.14.y 2c8a3fceddf0 2ce644fc .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/02/05 15:18 linux-4.14.y 2c8a3fceddf0 23a562df .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/31 12:15 linux-4.14.y 2c8a3fceddf0 fc9fd31e .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/29 21:55 linux-4.14.y 2d2791fce891 fc9fd31e .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/22 23:59 linux-4.14.y 2762b48e9611 52e37319 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/21 02:57 linux-4.14.y 2762b48e9611 d4f4eca5 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/20 15:36 linux-4.14.y 2762b48e9611 d4f4eca5 .config log report info INFO: task hung in synchronize_rcu
ci2-linux-4-14 2021/01/16 14:18 linux-4.14.y f79dc86058bc 65a7a854 .config log report info
ci2-linux-4-14 2021/01/13 22:07 linux-4.14.y f79dc86058bc a945f0a3 .config log report info
ci2-linux-4-14 2021/01/10 08:59 linux-4.14.y ec822b3e8bf4 2c1f2513 .config log report info
ci2-linux-4-14 2020/12/04 19:40 linux-4.14.y c196b3a9c83a 20366b87 .config log report info
ci2-linux-4-14 2020/12/01 21:58 linux-4.14.y 87335852c5d9 07bfe8a5 .config log report info
ci2-linux-4-14 2020/11/27 12:43 linux-4.14.y 87335852c5d9 486f93ef .config log report info
ci2-linux-4-14 2020/11/21 19:52 linux-4.14.y 8961076ed318 c7ec2d19 .config log report info
ci2-linux-4-14 2020/11/18 11:40 linux-4.14.y 27ce4f2a6817 09323409 .config log report info
ci2-linux-4-14 2020/11/14 02:17 linux-4.14.y 27ce4f2a6817 1bf9a662 .config log report info
ci2-linux-4-14 2020/11/04 02:18 linux-4.14.y 2b7915014161 cba33199 .config log report info
ci2-linux-4-14 2020/11/03 10:54 linux-4.14.y 2b7915014161 cba33199 .config log report info
ci2-linux-4-14 2020/11/01 09:32 linux-4.14.y 2b7915014161 8bc4594f .config log report info
ci2-linux-4-14 2020/10/31 04:02 linux-4.14.y 2b7915014161 18e33098 .config log report info
ci2-linux-4-14 2020/10/30 16:37 linux-4.14.y 2b7915014161 a6e3ac3b .config log report info
ci2-linux-4-14 2020/10/27 08:32 linux-4.14.y 5b7a52cd2eef 8b3eaf58 .config log report info
ci2-linux-4-14 2020/10/19 02:30 linux-4.14.y cbfa1702aaf6 fea47c01 .config log report info
ci2-linux-4-14 2020/10/11 13:27 linux-4.14.y cbfa1702aaf6 4a77ae0b .config log report info
ci2-linux-4-14 2020/10/10 16:40 linux-4.14.y cbfa1702aaf6 b74c49a6 .config log report info
ci2-linux-4-14 2020/10/01 05:16 linux-4.14.y cbfa1702aaf6 a9767fb2 .config log report info
ci2-linux-4-14 2020/09/29 22:42 linux-4.14.y cbfa1702aaf6 5abc3f1a .config log report info
ci2-linux-4-14 2019/11/07 03:31 linux-4.14.y c9fda4f22428 d797d201 .config log report