xpad 3-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19
xpad 3-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x271/0x2c0 kernel/locking/spinlock_debug.c:115
Read of size 4 at addr ffff88801c70785c by task syz-executor/9371
CPU: 0 UID: 0 PID: 9371 Comm: syz-executor Not tainted 6.11.0-rc2-syzkaller-00042-gcf6d429eb656 #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+0x116/0x1f0 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x271/0x2c0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:105 [inline]
__wake_up+0x1c/0x60 kernel/sched/wait.c:127
__usb_unanchor_urb drivers/usb/core/urb.c:156 [inline]
usb_anchor_resume_wakeups+0xc2/0xe0 drivers/usb/core/urb.c:150
__usb_hcd_giveback_urb+0x3b7/0x6e0 drivers/usb/core/hcd.c:1653
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find+0xa1/0x130 arch/x86/kernel/unwind_orc.c:102
Code: a6 4d 00 48 89 e8 48 29 d8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 4c 8d 3c 83 4c 89 fa 48 c1 ea 03 42 0f b6 0c 32 <4c> 89 fa 83 e2 07 83 c2 03 38 ca 7c 04 84 c9 75 73 49 63 17 4c 89
RSP: 0018:ffffc90000006a00 EFLAGS: 00000a06
RAX: 0000000000000004 RBX: ffffffff90811f88 RCX: 0000000000000000
RDX: 1ffffffff21023f3 RSI: ffffffff813cd3da RDI: 0000000000000005
RBP: ffffffff90811fa8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000009 R11: 0000000000000000 R12: ffffffff88e4acab
R13: ffffffff9130b5d6 R14: dffffc0000000000 R15: ffffffff90811f98
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 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+0x12f/0x3a0 mm/slub.c:4548
skb_kfree_head net/core/skbuff.c:1082 [inline]
skb_kfree_head net/core/skbuff.c:1079 [inline]
skb_free_head+0x18a/0x1d0 net/core/skbuff.c:1096
skb_release_data+0x75c/0x980 net/core/skbuff.c:1123
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb+0x4f/0x70 net/core/skbuff.c:1202
tcp_wmem_free_skb include/net/tcp.h:306 [inline]
tcp_rtx_queue_unlink_and_free include/net/tcp.h:2090 [inline]
tcp_clean_rtx_queue net/ipv4/tcp_input.c:3413 [inline]
tcp_ack+0x1eb7/0x5ba0 net/ipv4/tcp_input.c:4009
tcp_rcv_established+0x60f/0x21c0 net/ipv4/tcp_input.c:6223
tcp_v4_do_rcv+0x5ca/0xa90 net/ipv4/tcp_ipv4.c:1909
tcp_v4_rcv+0x344c/0x44e0 net/ipv4/tcp_ipv4.c:2344
ip_protocol_deliver_rcu+0xba/0x4e0 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:460 [inline]
ip_sublist_rcv_finish+0x2c1/0x620 net/ipv4/ip_input.c:580
ip_list_rcv_finish.constprop.0+0x559/0x720 net/ipv4/ip_input.c:631
ip_sublist_rcv net/ipv4/ip_input.c:639 [inline]
ip_list_rcv+0x339/0x450 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5704 [inline]
__netif_receive_skb_list_core+0x755/0x950 net/core/dev.c:5752
__netif_receive_skb_list net/core/dev.c:5804 [inline]
netif_receive_skb_list_internal+0x753/0xda0 net/core/dev.c:5896
gro_normal_list include/net/gro.h:515 [inline]
gro_normal_list include/net/gro.h:511 [inline]
napi_complete_done+0x23f/0x9a0 net/core/dev.c:6247
virtqueue_napi_complete drivers/net/virtio_net.c:694 [inline]
virtnet_poll+0x1c26/0x3ab0 drivers/net/virtio_net.c:2826
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6772
napi_poll net/core/dev.c:6841 [inline]
net_rx_action+0xa92/0x1010 net/core/dev.c:6963
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 b6 d1 53 f6 48 89 df e8 ce 4e 54 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 65 c2 45 f6 65 8b 05 06 44 ef 74 85 c0 74 16 5b
RSP: 0018:ffffc90003b57658 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffffffff9513cbb8 RCX: 1ffffffff28c8e94
RDX: 0000000000000000 RSI: ffffffff8b4cc500 RDI: ffffffff8bb08900
RBP: 0000000000000202 R08: 0000000000000001 R09: fffffbfff28c5ae0
R10: ffffffff9462d707 R11: ffffffff8b4e4da0 R12: 0000000000000001
R13: ffffc90003ad0000 R14: 1ffff9200076aed2 R15: ffffffff9513cbb0
debug_object_activate+0x34d/0x540 lib/debugobjects.c:727
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
__call_rcu_common.constprop.0+0x2c/0x790 kernel/rcu/tree.c:3091
thread_stack_delayed_free kernel/fork.c:234 [inline]
free_thread_stack kernel/fork.c:340 [inline]
release_task_stack kernel/fork.c:575 [inline]
put_task_stack+0x23a/0x390 kernel/fork.c:582
finish_task_switch.isra.0+0x8a5/0xcc0 kernel/sched/core.c:5095
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xe3f/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:tomoyo_check_acl+0x30e/0x410 security/tomoyo/domain.c:183
Code: 49 0f a3 5d 00 8d 43 01 41 0f 92 c7 31 ff 44 89 fe 66 89 44 24 16 e8 31 e8 46 fd 45 84 ff 75 29 e8 47 e6 46 fd 0f b7 74 24 16 00 01 00 00 48 83 c3 01 e8 44 e8 46 fd 48 81 fb 00 01 00 00 75
RSP: 0018:ffffc90003b57ab8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 000000000000006d RCX: ffffffff8443944f
RDX: ffff888020c73c00 RSI: 000000000000006e RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90003b57b78
R13: ffff8880218f8030 R14: 000000000000006d R15: 0000000000000000
tomoyo_path_number_perm+0x34a/0x590 security/tomoyo/file.c:733
tomoyo_path_mkdir+0x9c/0xe0 security/tomoyo/tomoyo.c:179
security_path_mkdir+0x111/0x170 security/security.c:1824
do_mkdirat+0x176/0x3a0 fs/namei.c:4230
__do_sys_mkdirat fs/namei.c:4248 [inline]
__se_sys_mkdirat fs/namei.c:4246 [inline]
__x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4246
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f129a176297
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffed262d5d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ffed262d620 RCX: 00007f129a176297
RDX: 00000000000001ff RSI: 00007ffed262d620 RDI: 00000000ffffff9c
RBP: 00007ffed262d60c R08: 0000000000000005 R09: 00007ffed262d375
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000032
R13: 00000000000ccac4 R14: 00000000000cc18b R15: 00007ffed262d660
Allocated by task 1173:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
xpad_probe+0x27e/0x1f50 drivers/input/joystick/xpad.c:2026
usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2db0/0x4e20 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 8678:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 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]
kfree+0x12a/0x3b0 mm/slub.c:4594
xpad_disconnect+0x1cf/0x580 drivers/input/joystick/xpad.c:2207
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:568 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:560
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x396/0x9f0 drivers/base/core.c:3868
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1dbb/0x4e20 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff88801c707800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 92 bytes inside of
freed 1024-byte region [ffff88801c707800, ffff88801c707c00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c700
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000040 ffff888015841dc0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000
head: 00fff00000000040 ffff888015841dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000
head: 00fff00000000003 ffffea000071c001 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x152820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 1109, tgid 1109 (kworker/u8:6), ts 674519957146, free_ts 673948577556
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3442
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4700
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x4e/0xf0 mm/slub.c:2321
allocate_slab mm/slub.c:2484 [inline]
new_slab+0x84/0x260 mm/slub.c:2537
___slab_alloc+0xdac/0x1870 mm/slub.c:3723
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_noprof+0x367/0x400 mm/slub.c:4170
kmalloc_noprof include/linux/slab.h:685 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
ieee802_11_parse_elems_full+0xea/0x1680 net/mac80211/parse.c:958
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2361 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2368 [inline]
ieee80211_inform_bss+0xfd/0x1100 net/mac80211/scan.c:79
rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
cfg80211_inform_single_bss_data+0x8e2/0x1dc0 net/wireless/scan.c:2335
cfg80211_inform_bss_data+0x205/0x39c0 net/wireless/scan.c:3159
cfg80211_inform_bss_frame_data+0x271/0x7a0 net/wireless/scan.c:3254
ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1898/0x2f40 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1588 [inline]
ieee80211_iface_work+0xc0b/0xf00 net/mac80211/iface.c:1642
page last free pid 9607 tgid 9606 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2612
vfree+0x181/0x7a0 mm/vmalloc.c:3364
__vmalloc_area_node mm/vmalloc.c:3724 [inline]
__vmalloc_node_range_noprof+0x11f5/0x1520 mm/vmalloc.c:3841
vmalloc_user_noprof+0x6b/0x90 mm/vmalloc.c:3995
xskq_create+0xfb/0x1d0 net/xdp/xsk_queue.c:49
xsk_init_queue net/xdp/xsk.c:1017 [inline]
xsk_setsockopt+0x757/0xa10 net/xdp/xsk.c:1359
do_sock_setsockopt+0x222/0x480 net/socket.c:2324
__sys_setsockopt+0x1a4/0x270 net/socket.c:2347
__do_sys_setsockopt net/socket.c:2356 [inline]
__se_sys_setsockopt net/socket.c:2353 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2353
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff88801c707700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88801c707780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801c707800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801c707880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801c707900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: a6 cmpsb %es:(%rdi),%ds:(%rsi)
1: 4d 00 48 89 rex.WRB add %r9b,-0x77(%r8)
5: e8 48 29 d8 48 call 0x48d82952
a: 89 c2 mov %eax,%edx
c: 48 c1 e8 3f shr $0x3f,%rax
10: 48 c1 fa 02 sar $0x2,%rdx
14: 48 01 d0 add %rdx,%rax
17: 48 d1 f8 sar %rax
1a: 4c 8d 3c 83 lea (%rbx,%rax,4),%r15
1e: 4c 89 fa mov %r15,%rdx
21: 48 c1 ea 03 shr $0x3,%rdx
25: 42 0f b6 0c 32 movzbl (%rdx,%r14,1),%ecx
* 2a: 4c 89 fa mov %r15,%rdx <-- trapping instruction
2d: 83 e2 07 and $0x7,%edx
30: 83 c2 03 add $0x3,%edx
33: 38 ca cmp %cl,%dl
35: 7c 04 jl 0x3b
37: 84 c9 test %cl,%cl
39: 75 73 jne 0xae
3b: 49 63 17 movslq (%r15),%rdx
3e: 4c rex.WR
3f: 89 .byte 0x89