INFO: task kworker/0:5:29846 blocked for more than 143 seconds.
      Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5     state:D stack:23336 pid:29846 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4986 [inline]
 __schedule+0x931/0x2360 kernel/sched/core.c:6296
 schedule+0xd2/0x260 kernel/sched/core.c:6369
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
 __mutex_lock_common kernel/locking/mutex.c:673 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
 unregister_netdev+0xe/0x20 net/core/dev.c:10467
 usbnet_disconnect+0x139/0x270 drivers/net/usb/usbnet.c:1623
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1206
 device_release_driver_internal drivers/base/dd.c:1237 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1260
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
 device_del+0x502/0xd50 drivers/base/core.c:3596
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2228
 hub_port_connect drivers/usb/core/hub.c:5202 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 port_event drivers/usb/core/hub.c:5660 [inline]
 hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742
 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
 worker_thread+0x657/0x1110 kernel/workqueue.c:2454
 kthread+0x40b/0x500 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/25:
 #0: ffffffff878923c0 (rcu_read_lock){....}-{1:2}
, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
1 lock held by dhcpcd/1207:
2 locks held by getty/1229:
 #0: ffff88810e8c0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900000432e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
3 locks held by kworker/1:5/4122:
 #0: ffff88810e06d938
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc900022b7db0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffffffff88877368
 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4595
6 locks held by kworker/0:7/5212:
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:631 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc9000ad4fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810ce31220
 (
&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: ffff88811a9c1220
 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #4: ffff8881075f01a8 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #5: ffffffff88877368 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:9783
7 locks held by kworker/1:0/24412:
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc9000b24fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810ce49220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: ffff8881051d3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #3: ffff8881051d3220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #4: ffff8881154231a8 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #5: ffff88810fc024d8 (&bus->mdio_lock){+.+.}-{3:3}, at: mdiobus_read+0x26/0x50 drivers/net/phy/mdio_bus.c:868
 #6: ffff88812e440d60
 (&dev->phy_mutex){+.+.}-{3:3}
, at: asix_mdio_read+0x86/0x220 drivers/net/usb/asix_common.c:497
5 locks held by kworker/0:4/29098:
6 locks held by kworker/0:5/29846:
 #0: ffff888103bf4938 (
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc90008777db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810cda1220
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: ffff888118b08220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
 #4: ffff888118d6b1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #4: ffff888118d6b1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
 #4: ffff888118d6b1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
 #4: ffff888118d6b1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
 #5: 
ffffffff88877368 (
rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xe/0x20 net/core/dev.c:10467
6 locks held by kworker/0:0/16896:
 #0: ffff888103bf4938 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc9000c227db0 ((work_completion)(&hub->events)
){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810ccf5220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #2: ffff88810ccf5220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: 
ffff88813a955220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
ffff88813a955220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #4: 
ffff88813a9561a8 (
&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #5: ffffffff88877368 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:9783
3 locks held by udevd/17691:
 #0: ffff88810e938888
 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
 #1: ffff888110ba0ae8 (kn->active#50){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
 #1: ffff888110ba0ae8 (kn->active#50){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
 #2: ffff8881051d3220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
 #2: ffff8881051d3220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
3 locks held by udevd/18435:
 #0: 
ffff88811666cc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
ffff88811666cc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
 #1: ffff8881312abbd0 (kn->active#50){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
 #1: ffff8881312abbd0 (kn->active#50){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
 #2: ffff88811a9c1220
 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
3 locks held by udevd/18437:
 #0: ffff88811ab5a088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
 #0: ffff88811ab5a088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
 #1: ffff888115d21cb8 (kn->active
#50){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
#50){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
 #2: ffff88813a955220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
 #2: ffff88813a955220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: khungtaskd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xc1d/0xf50 kernel/hung_task.c:295
 kthread+0x40b/0x500 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1207 Comm: dhcpcd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:idle_cpu kernel/sched/core.c:7021 [inline]
RIP: 0010:available_idle_cpu+0x65/0x190 kernel/sched/core.c:7043
Code: 48 03 1c ed a0 28 34 87 48 b8 00 00 00 00 00 fc ff df 48 8d bb d8 09 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f6 00 00 00 <48> 8d bb e0 09 00 00 4c 8b a3 d8 09 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000158c80 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff8881f6937940 RCX: 0000000000000000
RDX: 1ffff1103ed27063 RSI: ffffffff82136f43 RDI: ffff8881f6938318
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000001
R10: ffffffff82136e81 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88810f833800
FS:  00007effbddf5740(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd184f602f0 CR3: 000000010db15000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __select_idle_cpu kernel/sched/fair.c:6094 [inline]
 select_idle_cpu kernel/sched/fair.c:6288 [inline]
 select_idle_sibling kernel/sched/fair.c:6452 [inline]
 select_task_rq_fair+0x1745/0x36f0 kernel/sched/fair.c:6882
 select_task_rq kernel/sched/core.c:3433 [inline]
 try_to_wake_up+0x37d/0x11d0 kernel/sched/core.c:4118
 hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1939
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x89/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 51 4c 2e 00 5d be 03 00 00 00 e9 66 f0 c0 00 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 99 e1 be 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90000f6f290 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88810fdb3800 RSI: ffffffff812b9121 RDI: 0000000000000003
RBP: ffffc90000f6f2d0 R08: 0000000000000000 R09: ffffffff8a7d78d7
R10: ffffffff812b9117 R11: 0000000000000000 R12: 0000000000000038
R13: ffff8881003c9c00 R14: 0000000000000200 R15: ffffc90000f6f3f0
 console_trylock_spinning kernel/printk/printk.c:1884 [inline]
 vprintk_emit+0x377/0x4f0 kernel/printk/printk.c:2243
 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4608
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4619
 __netdev_printk+0x1c6/0x27a net/core/dev.c:10776
 netdev_warn+0xd7/0x109 net/core/dev.c:10829
 asix_write_cmd.cold+0x3a/0x46 drivers/net/usb/asix_common.c:54
 asix_set_sw_mii drivers/net/usb/asix_common.c:300 [inline]
 asix_check_host_enable+0x9e/0x1c0 drivers/net/usb/asix_common.c:74
 asix_mdio_read+0x90/0x220 drivers/net/usb/asix_common.c:499
 asix_phy_reset+0x104/0x170 drivers/net/usb/asix_devices.c:215
 ax88178_reset+0x3f5/0x1310 drivers/net/usb/asix_devices.c:977
 usbnet_open+0xc8/0x5d0 drivers/net/usb/usbnet.c:894
 __dev_open+0x2c4/0x4d0 net/core/dev.c:1407
 __dev_change_flags+0x583/0x750 net/core/dev.c:8139
 dev_change_flags+0x93/0x170 net/core/dev.c:8210
 devinet_ioctl+0x15d1/0x1ca0 net/ipv4/devinet.c:1144
 inet_ioctl+0x1e6/0x320 net/ipv4/af_inet.c:969
 sock_do_ioctl+0xcc/0x230 net/socket.c:1122
 sock_ioctl+0x2f1/0x640 net/socket.c:1239
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7effbdee30e7
Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 61 9d 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd599c4eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007effbddf56c8 RCX: 00007effbdee30e7
RDX: 00007ffd599d50a8 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007ffd599e5258 R08: 00007ffd599d5068 R09: 00007ffd599d5018
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd599d50a8 R14: 0000000000000028 R15: 0000000000008914
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 03 1c ed a0 28 34 	add    -0x78cbd760(,%rbp,8),%rbx
   7:	87
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df
  12:	48 8d bb d8 09 00 00 	lea    0x9d8(%rbx),%rdi
  19:	48 89 fa             	mov    %rdi,%rdx
  1c:	48 c1 ea 03          	shr    $0x3,%rdx
  20:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  24:	0f 85 f6 00 00 00    	jne    0x120
* 2a:	48 8d bb e0 09 00 00 	lea    0x9e0(%rbx),%rdi <-- trapping instruction
  31:	4c 8b a3 d8 09 00 00 	mov    0x9d8(%rbx),%r12
  38:	48                   	rex.W
  39:	b8 00 00 00 00       	mov    $0x0,%eax
  3e:	00 fc                	add    %bh,%ah