INFO: task hung in __netlink_dump

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in __netlink_dump_start (2) net				5	1061d	1143d	0/28	closed as invalid on 2022/02/07 19:19
upstream	INFO: task hung in __netlink_dump_start net				2	1511d	1525d	0/28	auto-closed as invalid on 2021/01/13 23:36
linux-5.15	INFO: task hung in __netlink_dump_start				20	26d	291d	0/3	upstream: reported on 2024/02/18 03:22
linux-4.19	INFO: task hung in __netlink_dump_start (2)				1	1013d	1013d	0/1	auto-closed as invalid on 2022/06/25 14:03
upstream	INFO: task hung in rtnetlink_rcv_msg net	C	inconclusive	inconclusive	1970	149d	2112d	26/28	fixed on 2024/07/09 19:14
linux-6.1	INFO: task hung in __netlink_dump_start				16	166d	311d	0/3	auto-obsoleted due to no activity on 2024/09/29 18:06
linux-6.1	INFO: task hung in __netlink_dump_start (2) origin:lts-only	syz			3	13d	65d	0/3	upstream: reported syz repro on 2024/10/01 03:35

device vlan0 entered promiscuous mode device vlan1 entered promiscuous mode device macvlan0 entered promiscuous mode device ipvlan0 entered promiscuous mode device ipvlan1 entered promiscuous mode INFO: task syz-executor.0:15143 blocked for more than 140 seconds. Not tainted 4.19.126-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28400 15143 6455 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8a2/0x1fc0 kernel/sched/core.c:3515 schedule+0x8d/0x1b0 kernel/sched/core.c:3559 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x5b8/0x1300 kernel/locking/mutex.c:1072 __netlink_dump_start+0x103/0x6f0 net/netlink/af_netlink.c:2297 netlink_dump_start include/linux/netlink.h:213 [inline] rtnetlink_rcv_msg+0x71e/0xb80 net/core/rtnetlink.c:4740 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6e3/0xcc0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 __sys_sendto+0x21a/0x330 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ca69 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f763611ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000501240 RCX: 000000000045ca69 RDX: 000000000000001c RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a0f R14: 00000000004ccea2 R15: 00007f763611b6d4 INFO: task syz-executor.4:15162 blocked for more than 140 seconds. Not tainted 4.19.126-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28720 15162 6792 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8a2/0x1fc0 kernel/sched/core.c:3515 schedule+0x8d/0x1b0 kernel/sched/core.c:3559 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x5b8/0x1300 kernel/locking/mutex.c:1072 sock_do_ioctl+0x24e/0x2f0 net/socket.c:963 sock_ioctl+0x325/0x610 net/socket.c:1074 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ca69 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3cc302fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e93c0 RCX: 000000000045ca69 RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000415 R14: 00000000004c6da4 R15: 00007f3cc30306d4 INFO: task syz-executor.1:15164 blocked for more than 140 seconds. device macvtap0 entered promiscuous mode Not tainted 4.19.126-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28912 15164 6573 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8a2/0x1fc0 kernel/sched/core.c:3515 schedule+0x8d/0x1b0 kernel/sched/core.c:3559 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x5b8/0x1300 kernel/locking/mutex.c:1072 rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4774 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6e3/0xcc0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115