INFO: task hung in register_nexthop

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
linux-5.15	INFO: task hung in register_nexthop_notifier	1	4	543d	567d	0/3	auto-obsoleted due to no activity on 2024/09/21 15:59
upstream	INFO: task hung in register_nexthop_notifier (6) net	1	1	190d	190d	0/29	auto-obsoleted due to no activity on 2025/08/31 07:52
upstream	INFO: task hung in register_nexthop_notifier net	1	1	1808d	1808d	0/29	auto-closed as invalid on 2021/03/26 11:18
upstream	INFO: task hung in register_nexthop_notifier (2) net	1	1	1512d	1512d	0/29	auto-closed as invalid on 2022/01/16 12:31
upstream	INFO: task hung in register_nexthop_notifier (5) netfilter	1	5	286d	382d	0/29	auto-obsoleted due to no activity on 2025/05/26 10:08
upstream	INFO: task hung in register_nexthop_notifier (3) net	1	44	521d	630d	26/29	fixed on 2024/07/09 19:14
linux-6.6	INFO: task hung in register_nexthop_notifier	1	1	5d00h	5d00h	0/2	upstream: reported on 2025/12/04 08:43

INFO: task syz-executor.4:5810 blocked for more than 143 seconds. Not tainted 6.1.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27384 pid:5810 ppid:3566 flags:0x00004006 Call Trace: <TASK> context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747 register_nexthop_notifier+0x80/0x270 net/ipv4/nexthop.c:3605 ops_init+0x35d/0x610 net/core/net_namespace.c:138 setup_net+0x4b5/0xb90 net/core/net_namespace.c:335 copy_net_ns+0x392/0x5d0 net/core/net_namespace.c:481 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x11e/0x170 kernel/nsproxy.c:226 ksys_unshare+0x580/0xb20 kernel/fork.c:3203 __do_sys_unshare kernel/fork.c:3274 [inline] __se_sys_unshare kernel/fork.c:3272 [inline] __x64_sys_unshare+0x34/0x40 kernel/fork.c:3272 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f4a3267cea9 RSP: 002b:00007f4

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2024/06/17 01:20	linux-6.1.y	eb44d83053d6	f429ab00	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	INFO: task hung in register_nexthop_notifier
2024/05/28 18:49	linux-6.1.y	88690811da69	34889ee3	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	INFO: task hung in register_nexthop_notifier
2024/05/21 10:48	linux-6.1.y	4078fa637fcd	4c0d3ee3	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	INFO: task hung in register_nexthop_notifier

Crashes (3):