INFO: task hung in ip6gre_exit_batch

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in ip6gre_exit_batch_net (6) net	1				1	1100d	1100d	0/29	closed as invalid on 2023/09/07 14:36
upstream	INFO: task hung in ip6gre_exit_batch_net (2) net	1				3	2432d	2433d	0/29	auto-closed as invalid on 2020/01/17 16:16
linux-5.15	INFO: task hung in ip6gre_exit_batch_net (2) origin:upstream	1	syz		error	1	235d	235d	0/3	upstream: reported syz repro on 2025/11/24 02:32
linux-6.1	INFO: task hung in ip6gre_exit_batch_net (2) origin:lts-only	1	C		done	1	63d	63d	3/3	fixed on 2026/06/16 10:34
linux-4.19	INFO: task hung in ip6gre_exit_batch_net (2)	1				1	2047d	2047d	0/1	auto-closed as invalid on 2021/04/06 21:09
upstream	INFO: task hung in ip6gre_exit_batch_net (4) net	1	syz	unreliable		44	1700d	1751d	0/29	closed as invalid on 2021/12/14 20:12
upstream	INFO: task hung in ip6gre_exit_batch_net net	1				6	2471d	2964d	0/29	closed as dup on 2018/06/04 15:23
linux-5.15	INFO: task hung in ip6gre_exit_batch_net	1				4	768d	785d	0/3	auto-obsoleted due to no activity on 2024/09/16 15:09
linux-6.1	INFO: task hung in ip6gre_exit_batch_net	1				1	768d	768d	0/3	auto-obsoleted due to no activity on 2024/09/16 14:37
upstream	INFO: task hung in ip6gre_exit_batch_net (5) net	1				1	1478d	1478d	0/29	auto-closed as invalid on 2022/09/28 06:40
linux-4.19	INFO: task hung in ip6gre_exit_batch_net	1				1	2450d	2450d	0/1	auto-closed as invalid on 2020/02/29 06:17
upstream	INFO: task hung in ip6gre_exit_batch_net (3) net	1				18	1935d	2250d	0/29	auto-closed as invalid on 2021/06/27 10:57

ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task kworker/u4:6:8903 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:6 D26624 8903 2 0x80000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 ip6gre_exit_batch_net+0x82/0x6c0 net/ipv6/ip6_gre.c:1632 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156

Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Manager	Title
2022/01/13 06:16	linux-4.19.y	3f8a27f9e27b	44d1319a	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2022/01/10 04:16	linux-4.19.y	3f8a27f9e27b	2ca0d385	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2022/01/09 16:17	linux-4.19.y	3f8a27f9e27b	2ca0d385	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2021/12/22 02:43	linux-4.19.y	3f8a27f9e27b	6caa12e4	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2021/12/21 20:54	linux-4.19.y	3f8a27f9e27b	6caa12e4	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2021/09/01 23:12	linux-4.19.y	e23d55af0e1f	7eb7e152	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net
2021/07/30 05:51	linux-4.19.y	a89b48fe9308	c585c7b0	.config	console log	report	info	ci2-linux-4-19	INFO: task hung in ip6gre_exit_batch_net