INFO: task hung in fib6_rules_net

Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported
INFO: task hung in netdev_run_todo net				12	1709d	2264d

1709d

2264d

Title	Replies (including bot)	Last reply
INFO: task hung in fib6_rules_net_exit	1 (2)	2018/03/31 16:16

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1 (2)

2018/03/31 16:16

Kernel	Title	Count	Last	Reported	Patched	Status
linux-4.19	INFO: task hung in fib6_rules_net_exit	1	826d	826d	0/1	auto-closed as invalid on 2022/05/19 15:58
linux-4.19	INFO: task hung in fib6_rules_net_exit (2)	1	633d	633d	0/1	auto-obsoleted due to no activity on 2022/11/29 01:33
upstream	INFO: task hung in fib6_rules_net_exit (2) net	7	1217d	1307d	0/26	auto-closed as invalid on 2021/03/25 09:49
android-49	INFO: task hung in fib6_rules_net_exit	1	2005d	1838d	0/3	auto-closed as invalid on 2019/04/28 09:31
upstream	INFO: task hung in fib6_rules_net_exit (3) net	24	917d	951d	0/26	auto-closed as invalid on 2022/01/18 22:47
android-49	INFO: task hung in fib6_rules_net_exit (2)	1	1666d	1666d	0/3	auto-closed as invalid on 2020/01/31 05:34

netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. IPVS: stopping backup sync thread 7398 ... INFO: task kworker/u4:3:163 blocked for more than 120 seconds. Not tainted 4.16.0-rc6+ #286 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:3 D19440 163 2 0x80000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440 schedule+0xf5/0x430 kernel/sched/core.c:3499 schedule_preempt_disabled+0x10/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0xaad/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 fib6_rules_net_exit+0x12/0x50 net/ipv6/fib6_rules.c:392 ops_exit_list.isra.6+0xae/0x150 net/core/net_namespace.c:151 cleanup_net+0x4d8/0xa90 net/core/net_namespace.c:522 process_one_work+0xc47/0x1bb0 kernel/workqueue.c:2113 worker_thread+0x223/0x1990 kernel/workqueue.c:2247 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 868 Comm: khungtaskd Not tainted 4.16.0-rc6+ #286 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x123/0x180 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0x90c/0xd60 kernel/hung_task.c:249 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54 Kernel panic - not syncing: hung_task: blocked tasks CPU: 1 PID: 868 Comm: khungtaskd Not tainted 4.16.0-rc6+ #286 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 check_hung_task kernel/hung_task.c:133 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0x91d/0xd60 kernel/hung_task.c:249 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..