INFO: task hung in register_nexthop

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in register_nexthop_notifier (6) net	1	1	200d	200d	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	1819d	1819d	0/29	auto-closed as invalid on 2021/03/26 11:18
upstream	INFO: task hung in register_nexthop_notifier (2) net	1	1	1522d	1522d	0/29	auto-closed as invalid on 2022/01/16 12:31
upstream	INFO: task hung in register_nexthop_notifier (5) netfilter	1	5	297d	393d	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	531d	641d	26/29	fixed on 2024/07/09 19:14
linux-6.1	INFO: task hung in register_nexthop_notifier	1	3	550d	577d	0/3	auto-obsoleted due to no activity on 2024/09/25 01:20
linux-6.6	INFO: task hung in register_nexthop_notifier	1	1	15d	15d	0/2	upstream: reported on 2025/12/04 08:43

INFO: task syz-executor.3:3803 blocked for more than 143 seconds. Not tainted 5.15.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:25120 pid: 3803 ppid: 3527 flags:0x00004006 Call Trace: <TASK> context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 register_nexthop_notifier+0x80/0x270 net/ipv4/nexthop.c:3606 ops_init+0x35d/0x610 net/core/net_namespace.c:138 setup_net+0x358/0x9e0 net/core/net_namespace.c:332 copy_net_ns+0x392/0x5d0 net/core/net_namespace.c:476 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:3101

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2024/06/13 15:59	linux-5.15.y	c61bd26ae81a	a9616ff5	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in register_nexthop_notifier
2024/06/08 15:13	linux-5.15.y	c61bd26ae81a	82c05ab8	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in register_nexthop_notifier
2024/05/28 12:25	linux-5.15.y	c61bd26ae81a	f550015e	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in register_nexthop_notifier
2024/05/20 16:41	linux-5.15.y	83655231580b	c0f1611a	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: task hung in register_nexthop_notifier

Crashes (4):