INFO: task syz-executor:8199 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00062-ge4fc196f5ba3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20432 pid:8199 tgid:8199 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2212
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6bb2d7914c
RSP: 002b:00007f6bb302fe30 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6bb3a34620 RCX: 00007f6bb2d7914c
RDX: 0000000000000028 RSI: 00007f6bb3a34670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007f6bb302fe84 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f6bb302fed8 R14: 00007f6bb3a34670 R15: 0000000000000000
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
5 locks held by kworker/0:1/9:
5 locks held by ksoftirqd/0/16:
1 lock held by khungtaskd/30:
#0:
ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
ffffffff8e9377a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
2 locks held by kworker/u8:3/52:
#0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1:
ffffc90000bc7d00
(
(reaper_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3207 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
3 locks held by kworker/0:2/941:
2 locks held by kworker/u8:6/1124:
#0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3206 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900044d7d00
(connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
(connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
3 locks held by kworker/u8:8/4024:
#0:
ffff88802a52d948
(
(wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
(wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000c287d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000c287d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734
2 locks held by dhcpcd/4890:
#0:
ffffffff8fc64a88 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x664/0x8e0 net/socket.c:1303
#1: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0x112/0x9d0 net/8021q/vlan.c:553
2 locks held by getty/4973:
#0:
ffff88802b2b60a0
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1:
ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:3/5219:
4 locks held by udevd/5220:
#0: ffff88801eea18b8
(
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182
#1:
ffff88807a1de888
(
&of->mutex
#2
){+.+.}-{3:3}, at: kernfs_seq_start+0x53/0x3b0 fs/kernfs/file.c:154
#2: ffff88802882ab48 (kn->active#25){.+.+}-{0:0}, at: kernfs_seq_start+0x72/0x3b0 fs/kernfs/file.c:155
#3: ffff888042571190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1014 [inline]
#3: ffff888042571190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
3 locks held by kworker/1:2/5265:
#0: ffff888015880948
(
(wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
(wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003fe7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90003fe7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
2 locks held by kworker/0:5/5277:
2 locks held by kworker/0:7/5281:
1 lock held by syz-executor/7867:
#0:
ffffffff8fc7fe48
(
rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
2 locks held by syz-executor/7947:
#0:
ffffffff8fc7fe48
(
rtnl_mutex
){+.+.}-{3:3}
, at: tun_detach drivers/net/tun.c:698 [inline]
, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
#1:
ffffffff8e7d1ad0
(
cpu_hotplug_lock
){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6021 [inline]
){++++}-{0:0}, at: unregister_netdevice_many_notify+0x5c4/0x1c40 net/core/dev.c:11325
1 lock held by syz-executor/8061:
#0: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
3 locks held by syz-executor/8145:
#0: ffffffff8fce5550
(cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8fce5408
(genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline]
(genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
(genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
#2: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_register_hw+0x2c4e/0x3e10 net/mac80211/main.c:1518
2 locks held by syz-executor/8199:
#0: ffffffff8fce5550 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8fce5408 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff8fce5408 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff8fce5408 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
2 locks held by syz-executor/8292:
#0:
ffffffff8fc732d0
(
pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7fe48
(rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8294:
#0: ffffffff8fc732d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8302:
#0: ffffffff8fc732d0 (
pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8303:
#0:
ffffffff8fc732d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8305:
#0: ffffffff8fc732d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1:
ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8308:
#0:
ffffffff8fc732d0
(pernet_ops_rwsem
){++++}-{3:3}
, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1:
ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
2 locks held by syz-executor/8309:
#0: ffffffff8fc732d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1:
ffffffff8fc7fe48 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3872
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00062-ge4fc196f5ba3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-rc1-syzkaller-00062-ge4fc196f5ba3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events nsim_fib_event_work
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:230 [inline]
RIP: 0010:delay_tsc+0x73/0xe0 arch/x86/lib/delay.c:72
Code: 00 e8 81 65 b1 f5 65 8b 05 92 5c 52 74 85 c0 74 2f f3 90 bf 01 00 00 00 e8 ca 63 b1 f5 e8 d5 f7 03 00 41 39 c7 75 20 0f 01 f9 <66> 90 48 89 d5 48 c1 e5 20 48 09 c5 48 29 dd 49 39 ee 77 be eb 23
RSP: 0018:ffffc90000006498 EFLAGS: 00000046
RAX: 00000000129a3fe0 RBX: 000000d2129a3d7c RCX: 0000000000000000
RDX: 00000000000000d2 RSI: ffffffff8c605ba0 RDI: ffffffff8c605b60
RBP: 00000000000001f0 R08: ffffffff853e27ea R09: 1ffff110040c9046
R10: dffffc0000000000 R11: ffffffff8bb17a60 R12: dffffc0000000000
R13: 00000000000026db R14: 0000000000000899 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbae0b5a520 CR3: 000000002d6f8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
wait_for_lsr drivers/tty/serial/8250/8250_port.c:2074 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
serial8250_console_write+0x104e/0x1770 drivers/tty/serial/8250/8250_port.c:3393
console_emit_next_record kernel/printk/printk.c:2983 [inline]
console_flush_all+0x865/0xfd0 kernel/printk/printk.c:3049
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4909
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4920
_dev_warn+0x122/0x170 drivers/base/core.c:4976
usb_rx_callback_intf0+0x15a/0x1a0 drivers/media/rc/imon.c:1768
__usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x830/0x45a0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:preempt_count_add+0x36/0x190 kernel/sched/core.c:5648
Code: c7 c0 80 19 f2 94 48 c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 0f b6 04 38 84 c0 0f 85 ed 00 00 00 83 3d bc 3a 8f 13 00 75 07 <65> 8b 05 7b f8 a0 7e 65 01 1d 74 f8 a0 7e 48 c7 c0 80 19 f2 94 48
RSP: 0018:ffffc90000007568 EFLAGS: 00000246
RAX: 0000000000000004 RBX: 0000000000000001 RCX: ffffffff94f21903
RDX: ffff888017acda00 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90000007660 R08: ffffffff814107f1 R09: ffffc90000007750
R10: 0000000000000003 R11: ffffffff817f0ca0 R12: ffff888017acda00
R13: dffffc0000000000 R14: 0000000000000002 R15: dffffc0000000000
unwind_next_frame+0xc1/0x2a00 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
skb_kfree_head net/core/skbuff.c:1082 [inline]
skb_free_head net/core/skbuff.c:1096 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1123
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
consume_skb+0xb1/0x160 net/core/skbuff.c:1426
mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
__iterate_interfaces+0x223/0x4c0 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1770
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kasan_quarantine_put+0x88/0x230 mm/kasan/quarantine.c:237
Code: e8 fd 1e a0 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 0f 85 87 00 00 00 41 f7 c7 00 02 00 00 74 01 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 8d 80 40
RSP: 0018:ffffc900000d7660 EFLAGS: 00000206
RAX: 59137a4cb214cc01 RBX: ffff88801f21ca80 RCX: ffffffff81701e2a
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c605bc0
RBP: 0000000000000000 R08: ffffffff937298e7 R09: 1ffffffff26e531c
R10: dffffc0000000000 R11: fffffbfff26e531d R12: ffff888015841500
R13: dffffc0000000000 R14: 000000000001a460 R15: 0000000000000282
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x149/0x360 mm/slub.c:4594
nsim_fib_event drivers/net/netdevsim/fib.c:891 [inline]
nsim_fib_event_work+0x11c5/0x4130 drivers/net/netdevsim/fib.c:1492
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored