INFO: task kworker/u4:2:50 blocked for more than 147 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:24008 pid: 50 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26e0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
netdev_wait_allrefs net/core/dev.c:10508 [inline]
netdev_run_todo+0x697/0x910 net/core/dev.c:10618
nsim_destroy+0x9a/0x160 drivers/net/netdevsim/netdev.c:387
__nsim_dev_port_del+0x161/0x210 drivers/net/netdevsim/dev.c:1429
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1442 [inline]
nsim_dev_reload_destroy+0xf3/0x2b0 drivers/net/netdevsim/dev.c:1650
nsim_dev_reload_down+0xab/0x130 drivers/net/netdevsim/dev.c:964
devlink_reload+0x1ae/0x5e0 net/core/devlink.c:4042
devlink_pernet_pre_exit+0x141/0x1c0 net/core/devlink.c:11377
ops_pre_exit_list net/core/net_namespace.c:158 [inline]
cleanup_net+0x3a4/0x980 net/core/net_namespace.c:581
process_one_work+0x87f/0x1420 kernel/workqueue.c:2298
worker_thread+0x5a6/0xf90 kernel/workqueue.c:2445
kthread+0x3ab/0x480 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task kworker/0:4:3653 blocked for more than 169 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:26088 pid: 3653 ppid: 2 flags:0x00004000
Workqueue: events nsim_dev_trap_report_work
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26e0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
nsim_dev_trap_report_work+0x58/0xb40 drivers/net/netdevsim/dev.c:838
process_one_work+0x87f/0x1420 kernel/workqueue.c:2298
worker_thread+0x5a6/0xf90 kernel/workqueue.c:2445
kthread+0x3ab/0x480 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz-executor.1:4265 blocked for more than 147 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28688 pid: 4265 ppid: 3922 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26e0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
netlink_rcv_skb+0x118/0x370 net/netlink/af_netlink.c:2496
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x770/0xc10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xab/0xe0 net/socket.c:724
____sys_sendmsg+0x5bf/0x7a0 net/socket.c:2409
___sys_sendmsg+0xd3/0x150 net/socket.c:2463
__sys_sendmsg+0xb2/0x140 net/socket.c:2492
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: 0033:0x4665e9
RSP: 002b:00007f204e113188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffce77ca07f R14: 00007f204e113300 R15: 0000000000022000
INFO: task syz-executor.2:4267 blocked for more than 147 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28584 pid: 4267 ppid: 3924 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26e0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
netlink_rcv_skb+0x118/0x370 net/netlink/af_netlink.c:2496
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x770/0xc10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xab/0xe0 net/socket.c:724
____sys_sendmsg+0x5bf/0x7a0 net/socket.c:2409
___sys_sendmsg+0xd3/0x150 net/socket.c:2463
__sys_sendmsg+0xb2/0x140 net/socket.c:2492
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: 0033:0x4665e9
RSP: 002b:00007f7f6effd188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffc9b8e2b7f R14: 00007f7f6effd300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/0:0/5:
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff88800fc73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1420 kernel/workqueue.c:2269
#1: ffffc90000ebfdb8 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1420 kernel/workqueue.c:2273
#2: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x74/0xad0 net/wireless/reg.c:2449
3 locks held by kworker/u4:0/8:
1 lock held by khungtaskd/26:
#0: ffffffff8ab762c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by khugepaged/32:
#0: ffffffff8ac52d88 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x5a/0x6e0 mm/swap.c:798
7 locks held by kworker/u4:2/50:
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff8880149b4138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1420 kernel/workqueue.c:2269
#1: ffffc90001807db8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1420 kernel/workqueue.c:2273
#2: ffffffff8c23d550 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x97/0x980 net/core/net_namespace.c:555
#3: ffffffff8c279348 (devlink_mutex){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x6f/0x1c0 net/core/devlink.c:11368
#4: ffff8880717a85c0 (&nsim_bus_dev->nsim_bus_reload_lock){+.+.}-{3:3}, at: nsim_dev_reload_down+0x3f/0x130 drivers/net/netdevsim/dev.c:951
#5: ffff888017799490 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1439 [inline]
#5: ffff888017799490 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0x9a/0x2b0 drivers/net/netdevsim/dev.c:1650
#6: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: netdev_wait_allrefs net/core/dev.c:10508 [inline]
#6: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x697/0x910 net/core/dev.c:10618
5 locks held by kworker/u4:5/1073:
2 locks held by getty/3315:
#0: ffff88807e38e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000278e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9dd/0xed0 drivers/tty/n_tty.c:2113
3 locks held by kworker/0:4/3653:
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1420 kernel/workqueue.c:2269
#1: ffffc900024b7db8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1420 kernel/workqueue.c:2273
#2: ffff888017799490 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x58/0xb40 drivers/net/netdevsim/dev.c:838
3 locks held by kworker/0:6/3965:
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff88800fc67d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1420 kernel/workqueue.c:2269
#1: ffffc90002837db8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1420 kernel/workqueue.c:2273
#2: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0x5/0x10 net/switchdev/switchdev.c:74
1 lock held by syz-executor.4/4261:
1 lock held by syz-executor.0/4263:
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
1 lock held by syz-executor.1/4265:
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
1 lock held by syz-executor.2/4267:
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
1 lock held by syz-executor.3/4269:
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8c250008 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2d2/0x8d0 net/core/rtnetlink.c:5568
2 locks held by syz-executor.5/4271:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x11f/0x170 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+0x88c/0xbf0 kernel/hung_task.c:295
kthread+0x3ab/0x480 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:kasan_check_range+0x17/0x180 mm/kasan/generic.c:188
Code: 48 0f 45 c1 48 89 c7 e8 c7 de ef ff 0f 0b 0f 1f 44 00 00 48 85 f6 0f 84 3c 01 00 00 49 89 f9 41 54 44 0f b6 c2 49 01 f1 55 53 <0f> 82 18 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 05
RSP: 0000:ffffc90000fd8970 EFLAGS: 00000086
RAX: 0000000000000000 RBX: 1ffff920001fb138 RCX: ffffffff8152417f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ee66940
RBP: 0000000000000100 R08: 0000000000000000 R09: ffffffff8ee66948
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: ffff888010c38cc0 R14: 0000000000000000 R15: ffff888010c38ce0
FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000422320 CR3: 000000001d462000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:199 [inline]
mark_lock+0xef/0x1840 kernel/locking/lockdep.c:4583
mark_usage kernel/locking/lockdep.c:4526 [inline]
__lock_acquire+0x8ce/0x5410 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x1f/0x2e0 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x859/0xb00 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x2f5/0x780 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:753 [inline]
RIP: 0010:batadv_iv_ogm_schedule_buff+0x495/0x1030 net/batman-adv/bat_iv_ogm.c:826
Code: 00 00 fc ff df 48 c1 e8 03 4c 01 e0 48 89 44 24 18 48 8b 44 24 48 48 c1 e8 03 4c 01 e0 48 89 44 24 20 48 8b 44 24 18 80 38 00 <0f> 85 c3 0a 00 00 48 8b 74 24 10 8b 44 24 08 48 8b 16 48 8d 1c c2
RSP: 0000:ffffc90000eefbb0 EFLAGS: 00000246
RAX: ffffed100de30ab0 RBX: 0000000000000000 RCX: ffffc90000eefb38
RDX: 1ffff11002187182 RSI: 00000000000001ac RDI: ffffffff8920cc60
RBP: ffff888072250000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888072250c80 R14: ffff888077902000 R15: ffff888060ea7898
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x59f/0x920 net/batman-adv/bat_iv_ogm.c:1713
process_one_work+0x87f/0x1420 kernel/workqueue.c:2298
worker_thread+0x5a6/0xf90 kernel/workqueue.c:2445
kthread+0x3ab/0x480 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 0f 45 c1 cmovne %rcx,%rax
4: 48 89 c7 mov %rax,%rdi
7: e8 c7 de ef ff callq 0xffefded3
c: 0f 0b ud2
e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
13: 48 85 f6 test %rsi,%rsi
16: 0f 84 3c 01 00 00 je 0x158
1c: 49 89 f9 mov %rdi,%r9
1f: 41 54 push %r12
21: 44 0f b6 c2 movzbl %dl,%r8d
25: 49 01 f1 add %rsi,%r9
28: 55 push %rbp
29: 53 push %rbx
* 2a: 0f 82 18 01 00 00 jb 0x148 <-- trapping instruction
30: 48 b8 ff ff ff ff ff movabs $0xffff7fffffffffff,%rax
37: 7f ff ff
3a: 48 39 c7 cmp %rax,%rdi
3d: 0f .byte 0xf
3e: 86 .byte 0x86
3f: 05 .byte 0x5