INFO: task hung in ipmr_net_exit

Kernel	Title	Rank 🛈	Repro	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in ipmr_net_exit_batch net	1		1	1322d	1322d	0/29	auto-obsoleted due to no activity on 2023/04/06 09:54
upstream	INFO: task hung in ipmr_net_exit_batch (5) prio:normal net	1		4	124d	248d	0/29	auto-obsoleted due to no activity on 2026/07/09 06:50
linux-6.1	INFO: task hung in ipmr_net_exit_batch	1		2	788d	798d	0/3	auto-obsoleted due to no activity on 2024/09/23 16:16
linux-6.6	INFO: task hung in ipmr_net_exit_batch	1		1	36d	36d	0/2	upstream: reported on 2026/07/07 06:31
upstream	INFO: task hung in ipmr_net_exit_batch (2) net	1		6	785d	813d	0/29	auto-obsoleted due to no activity on 2024/09/16 02:09
upstream	INFO: task hung in ipmr_net_exit_batch (3) net	1	syz	6	657d	660d	0/29	closed as invalid on 2024/11/27 19:42

INFO: task kworker/u8:8:3478 blocked for more than 143 seconds. Not tainted 6.14.0-rc2-syzkaller-00487-gdbcbec81c9b8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:8 state:D stack:21104 pid:3478 tgid:3478 ppid:2 task_flags:0x4208160 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: <TASK> context_switch kernel/sched/core.c:5377 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6764 __schedule_loop kernel/sched/core.c:6841 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6856 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 ipmr_net_exit_batch+0x20/0x90 net/ipv4/ipmr.c:3158 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x8ad/0xd60 net/core/net_namespace.c:652

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/02/18 15:27	net-next	dbcbec81c9b8	c37c7249	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: task hung in ipmr_net_exit_batch

Crashes (1):