syzbot

 sign-in | mailing list | source | docs
🐞 Open [423] 🐞 Fixed [29] 🐞 Invalid [184] ⬇ Missing Backports [36] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

BUG: workqueue lockup

Status: upstream: reported C repro on 2023/03/11 08:51
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+fc5688cf31fbb0d8587f@syzkaller.appspotmail.com
First crash: 270d, last: 2d04h
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/08/12 upstream (ToT) f8de32cc060b C [report] BUG: workqueue lockup
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block C 47 1479d 1886d 16/25 fixed on 2019/12/13 00:31
android-5-15 BUG: workqueue lockup origin:upstream missing-backport C error 135 1h37m 166d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) C 406 2036d 2194d 6/25 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup C 282 280d 1682d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup C 172 2216d 2227d 3/25 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) C done 2314 25m 1421d 0/25 upstream: reported C repro on 2020/01/14 22:04
android-5-10 BUG: workqueue lockup (2) C error 190 4h29m 275d 0/2 upstream: reported C repro on 2023/03/05 21:10
upstream BUG: workqueue lockup (3) C 1215 1980d 2032d 9/25 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream C error 75 21h08m 136d 0/2 upstream: reported C repro on 2023/07/23 17:25
android-414 BUG: workqueue lockup C 114 1545d 1700d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup C error 41 274d 1688d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup C error 25 674d 773d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup C 69 1468d 1700d 0/3 public: reported C repro on 2019/04/11 08:44
linux-6.1 BUG: workqueue lockup origin:upstream C 55 2d04h 274d 0/3 upstream: reported C repro on 2023/03/07 17:51

Sample crash report:
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 43s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 43s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 38s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 43s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=7/256 refcnt=8
    pending: psi_avgs_work, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, ovs_dp_masks_rebalance
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=13/256 refcnt=14
    pending: ovs_dp_masks_rebalance, vmstat_shepherd, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance
workqueue events_long: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: defense_work_handler, defense_work_handler, defense_work_handler
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: defense_work_handler, defense_work_handler, defense_work_handler, defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=3
    pending: flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x82
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=5/256 refcnt=7
    pending: fb_flashcursor, neigh_periodic_work, neigh_periodic_work, do_cache_clean, gc_worker
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wb_workfn
workqueue kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
workqueue krxrpcd: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=3
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=4
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker, rxrpc_peer_keepalive_worker

Crashes (95):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/04 04:32 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/10 20:18 linux-5.15.y 80529b4968a8 45e9b83e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/28 14:05 linux-5.15.y 12952a23a5da 3c418d72 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/06 10:00 linux-5.15.y b911329317b4 db17ad9f .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/23 07:58 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/20 18:20 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/27 10:55 linux-5.15.y f67653019430 4cd5bb25 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/27 02:13 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan BUG: workqueue lockup
2023/08/27 04:06 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/12 13:14 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/22 12:08 linux-5.15.y f67653019430 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/03/19 13:49 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/03/11 08:51 linux-5.15.y abddfcf701a5 5205ef30 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/12/04 15:12 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/05/01 00:59 linux-5.15.y f48aeeaaa64c 62df2017 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/06 16:18 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/03/21 09:20 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/12/03 13:00 linux-5.15.y 9b91d36ba301 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/28 22:33 linux-5.15.y a78d278e01b1 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/27 09:00 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/27 05:29 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/26 11:37 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/25 07:43 linux-5.15.y 2a910f4af54d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/22 04:52 linux-5.15.y 2a910f4af54d cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/21 20:23 linux-5.15.y 2a910f4af54d cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/20 20:41 linux-5.15.y 2a910f4af54d cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/19 00:49 linux-5.15.y 80529b4968a8 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/12 06:32 linux-5.15.y 80529b4968a8 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/11 11:43 linux-5.15.y 80529b4968a8 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/09 14:56 linux-5.15.y 80529b4968a8 56230772 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/09 01:54 linux-5.15.y 80529b4968a8 4862372a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/11/01 10:10 linux-5.15.y 12952a23a5da 69904c9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/31 14:07 linux-5.15.y 12952a23a5da 58499c95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/26 23:49 linux-5.15.y 12952a23a5da bf285f0c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/11 01:15 linux-5.15.y 02e21884dcf2 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/10/08 23:21 linux-5.15.y 1edcec18cfb7 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/30 10:00 linux-5.15.y b911329317b4 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/13 22:36 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/11 17:44 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/11 06:23 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/09/05 04:43 linux-5.15.y 8f790700c974 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/26 22:09 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/21 17:03 linux-5.15.y f6f7927ac664 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/09 03:12 linux-5.15.y c275eaaaa342 8ad1a287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/08/05 12:43 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/30 17:30 linux-5.15.y 09996673e313 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/24 20:20 linux-5.15.y 5c6a716301d9 b03242d7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/18 18:18 linux-5.15.y d54cfc420586 022df2bb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/15 22:21 linux-5.15.y d54cfc420586 35d9ecc5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/13 02:10 linux-5.15.y d54cfc420586 86081196 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/05 03:07 linux-5.15.y 4af60700a60c 80298b6f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/07/04 14:09 linux-5.15.y 4af60700a60c f99c2404 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/30 04:06 linux-5.15.y 4af60700a60c 01298212 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/26 15:00 linux-5.15.y f67653019430 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/23 22:59 linux-5.15.y f67653019430 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/23 21:43 linux-5.15.y f67653019430 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/20 03:52 linux-5.15.y 471e639e59d1 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/19 06:23 linux-5.15.y 471e639e59d1 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/15 21:45 linux-5.15.y 471e639e59d1 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/14 21:10 linux-5.15.y 471e639e59d1 76decb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
2023/06/07 18:52 linux-5.15.y d7af3e5ba454 058b3a5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.