INFO: task hung in ip_tunnel_delete_nets (5)

Status: auto-obsoleted due to no activity on 2023/12/06 23:00
Subsystems: net
[Documentation on labels]
First crash: 1368d, last: 1062d
▶ ▼ Similar bugs (12)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in ip_tunnel_delete_nets 1 1 1189d 1189d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:02
linux-6.1 INFO: task hung in ip_tunnel_delete_nets (2) 1 9 741d 804d 0/3 auto-obsoleted due to no activity on 2024/11/01 23:50
upstream INFO: task hung in ip_tunnel_delete_nets (3) net 1 1 2157d 2157d 0/29 auto-closed as invalid on 2020/12/07 06:22
linux-6.6 INFO: task hung in ip_tunnel_delete_nets 1 1 58d 58d 0/2 upstream: reported on 2026/06/07 20:57
linux-4.19 INFO: task hung in ip_tunnel_delete_nets 1 1 1709d 1709d 0/1 auto-closed as invalid on 2022/03/29 13:03
upstream INFO: task hung in ip_tunnel_delete_nets (2) net 1 2 2269d 2281d 0/29 auto-closed as invalid on 2020/08/16 16:51
upstream INFO: task hung in ip_tunnel_delete_nets net 1 2 2485d 2489d 0/29 closed as invalid on 2019/10/23 07:54
upstream INFO: task hung in ip_tunnel_delete_nets (6) net 1 2 897d 938d 0/29 auto-obsoleted due to no activity on 2024/05/19 21:58
upstream INFO: task hung in ip_tunnel_delete_nets (4) net 1 2 1498d 1498d 0/29 auto-closed as invalid on 2022/09/26 14:02
linux-4.19 INFO: task hung in ip_tunnel_delete_nets (2) 1 1 1324d 1324d 0/1 auto-obsoleted due to no activity on 2023/04/18 11:45
linux-6.1 INFO: task hung in ip_tunnel_delete_nets (3) 1 1 223d 223d 0/3 auto-obsoleted due to no activity on 2026/04/04 00:00
linux-6.1 INFO: task hung in ip_tunnel_delete_nets (4) 1 1 69d 69d 0/3 upstream: reported on 2026/05/27 21:28

Sample crash report:
INFO: task kworker/u4:4:16059 blocked for more than 143 seconds.
      Not tainted 6.5.0-syzkaller-12107-g7ba2090ca64e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:4    state:D stack:24816 pid:16059 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
 ip_tunnel_delete_nets+0x94/0x3a0 net/ipv4/ip_tunnel.c:1139
 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614
 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
INFO: task kworker/1:1:1163 blocked for more than 143 seconds.
      Not tainted 6.5.0-syzkaller-12107-g7ba2090ca64e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:25784 pid:1163  ppid:2      flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
 addrconf_dad_work+0xcf/0x13e0 net/ipv6/addrconf.c:4125
 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
INFO: task syz-executor.1:2135 blocked for more than 144 seconds.
      Not tainted 6.5.0-syzkaller-12107-g7ba2090ca64e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:24392 pid:2135  ppid:1      flags:0x20004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
 wiphy_lock include/net/cfg80211.h:5775 [inline]
 reg_process_self_managed_hints+0x78/0x170 net/wireless/reg.c:3181
 wiphy_register+0x2232/0x2ce0 net/wireless/core.c:983
 ieee80211_register_hw+0x24d1/0x4250 net/mac80211/main.c:1392
 mac80211_hwsim_new_radio+0x2893/0x50f0 drivers/net/wireless/virtual/mac80211_hwsim.c:5302
 hwsim_new_radio_nl+0xaf8/0x1240 drivers/net/wireless/virtual/mac80211_hwsim.c:5983
 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:971
 genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
 genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1066
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
 netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
 sock_sendmsg_nosec net/socket.c:730 [inline]
 sock_sendmsg+0xd9/0x180 net/socket.c:753
 __sys_sendto+0x255/0x340 net/socket.c:2176
 __do_compat_sys_socketcall+0x5df/0x700 net/compat.c:475
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f1f579
RSP: 002b:00000000f749fe50 EFLAGS: 00000293 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00000000f749fe64
RDX: 0000000000000000 RSI: 00000000f7ea4568 RDI: 00000000f7353ff4
RBP: 00000000f7ea4568 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.5.0-syzkaller-12107-g7ba2090ca64e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfac/0x1230 kernel/hung_task.c:379
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4510 Comm: kworker/0:3 Not tainted 6.5.0-syzkaller-12107-g7ba2090ca64e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events cfg80211_wiphy_work
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: e6 49 9d 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 bd 18 7c 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc900000069e8 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff888069e6a000 RCX: 0000000000000100
RDX: ffff88802b339dc0 RSI: ffffffff88f73bea RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0200000000000000 R12: 0000000000000000
R13: ffffc90000006cf8 R14: 0000000000000000 R15: ffff888069e694b8
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000030635000 CR3: 000000000c976000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __find_rr_leaf+0x268/0xe00 net/ipv6/route.c:791
 find_rr_leaf net/ipv6/route.c:848 [inline]
 rt6_select net/ipv6/route.c:892 [inline]
 fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2180
 ip6_pol_route+0x1c1/0x1220 net/ipv6/route.c:2216
 pol_lookup_func include/net/ip6_fib.h:614 [inline]
 fib6_rule_lookup+0x11e/0x5f0 net/ipv6/fib6_rules.c:116
 ip6_route_input_lookup net/ipv6/route.c:2285 [inline]
 ip6_route_input+0x5d9/0xbb0 net/ipv6/route.c:2581
 ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66
 ip6_rcv_finish+0x12f/0x2c0 net/ipv6/ip6_input.c:77
 ip_sabotage_in+0x224/0x2a0 net/bridge/br_netfilter_hooks.c:880
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_slow+0xbf/0x1e0 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:259 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ipv6_rcv+0x32f/0x6f0 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5523
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5637
 netif_receive_skb_internal net/core/dev.c:5723 [inline]
 netif_receive_skb+0x135/0x7b0 net/core/dev.c:5782
 NF_HOOK include/linux/netfilter.h:304 [inline]
 NF_HOOK include/linux/netfilter.h:298 [inline]
 br_pass_frame_up+0x30b/0x760 net/bridge/br_input.c:68
 br_handle_frame_finish+0xca4/0x1dd0 net/bridge/br_input.c:216
 br_nf_hook_thresh+0x2ff/0x410 net/bridge/br_netfilter_hooks.c:1048
 br_nf_pre_routing_finish_ipv6+0x683/0xf20 net/bridge/br_netfilter_ipv6.c:148
 NF_HOOK include/linux/netfilter.h:304 [inline]
 br_nf_pre_routing_ipv6+0x41b/0x850 net/bridge/br_netfilter_ipv6.c:178
 br_nf_pre_routing+0x8d8/0x1950 net/bridge/br_netfilter_hooks.c:508
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
 br_handle_frame+0x9da/0x16d0 net/bridge/br_input.c:417
 __netif_receive_skb_core.constprop.0+0xa26/0x3f20 net/core/dev.c:5417
 __netif_receive_skb_one_core+0xaf/0x180 net/core/dev.c:5521
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5637
 process_backlog+0x101/0x6c0 net/core/dev.c:5965
 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6527
 napi_poll net/core/dev.c:6594 [inline]
 net_rx_action+0x956/0xe90 net/core/dev.c:6727
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 do_softirq kernel/softirq.c:454 [inline]
 do_softirq+0xaa/0xe0 kernel/softirq.c:441
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 cfg80211_inform_single_bss_frame_data+0x835/0xf30 net/wireless/scan.c:2887
 cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912
 ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211
 ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642
 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
 ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658
 cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/07 22:49 upstream 7ba2090ca64e 72324844 .config console log report info ci-upstream-kasan-gce-386 INFO: task hung in ip_tunnel_delete_nets
2023/07/10 12:53 upstream 06c2afb862f9 52ae002a .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in ip_tunnel_delete_nets
2023/07/08 00:57 upstream 4f6b6c2b2f86 668cb1fa .config console log report info ci-upstream-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2023/07/06 10:46 upstream 6cd06ab12d1a ba5dba36 .config console log report info ci-upstream-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2023/04/13 11:15 upstream de4664485abb 82d5e53e .config console log report info ci-upstream-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2023/02/05 06:38 upstream 95078069c1e7 be607b78 .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in ip_tunnel_delete_nets
2023/01/03 13:28 upstream 69b41ac87e4a ab32d508 .config console log report info ci-upstream-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2023/08/28 12:16 upstream 2dde18cd1d8f 03d9c195 .config console log report info ci-upstream-kasan-gce-386 INFO: task hung in ip_tunnel_delete_nets
2023/08/21 01:56 upstream 706a74159504 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in ip_tunnel_delete_nets
2023/07/03 02:36 upstream a901a3568fd2 bfc47836 .config console log report info ci-upstream-kasan-gce-386 INFO: task hung in ip_tunnel_delete_nets
2023/06/29 05:38 net-next ae230642190a ca69c785 .config console log report info ci-upstream-net-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2022/11/06 02:39 net-next-old fbeb229a6622 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in ip_tunnel_delete_nets
2023/07/27 21:15 linux-next 451cc82bd11e 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ip_tunnel_delete_nets
2023/06/24 13:18 linux-next 8d2be868b42c 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ip_tunnel_delete_nets
2023/06/11 13:36 linux-next 715abedee4cd 7086cdb9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in ip_tunnel_delete_nets
* Struck through repros no longer work on HEAD.