==================================================================
BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:930 [inline]
BUG: KASAN: use-after-free in enqueue_timer+0xa6/0x480 kernel/time/timer.c:611
Write of size 8 at addr ffff8881176a0a00 by task kworker/1:10/26222
CPU: 1 PID: 26222 Comm: kworker/1:10 Not tainted 6.1.124-syzkaller-00008-gccc915784332 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-crypt-wg0 wg_packet_decrypt_worker
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x158/0x4e0 mm/kasan/report.c:427
kasan_report+0x13c/0x170 mm/kasan/report.c:531
__asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356
hlist_add_head include/linux/list.h:930 [inline]
enqueue_timer+0xa6/0x480 kernel/time/timer.c:611
__mod_timer+0x83d/0xcf0 kernel/time/timer.c:1119
mod_timer+0x1f/0x30 kernel/time/timer.c:1172
mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
wg_timers_any_authenticated_packet_traversal+0x136/0x1a0 drivers/net/wireguard/timers.c:215
wg_packet_consume_data_done drivers/net/wireguard/receive.c:354 [inline]
wg_packet_rx_poll+0xb42/0x1be0 drivers/net/wireguard/receive.c:474
__napi_poll+0xbe/0x5c0 net/core/dev.c:6563
napi_poll net/core/dev.c:6630 [inline]
net_rx_action+0x595/0xdd0 net/core/dev.c:6744
handle_softirqs+0x1db/0x650 kernel/softirq.c:617
__do_softirq+0xb/0xd kernel/softirq.c:655
do_softirq+0xf6/0x150 kernel/softirq.c:499
__local_bh_enable_ip+0x75/0x80 kernel/softirq.c:423
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
_raw_spin_unlock_bh+0x50/0x60 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_decrypt_worker+0xd08/0xda0 drivers/net/wireguard/receive.c:499
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Allocated by task 3825:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
kasan_kmalloc include/linux/kasan.h:212 [inline]
__do_kmalloc_node mm/slab_common.c:938 [inline]
__kmalloc+0xb4/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
kzalloc include/linux/slab.h:699 [inline]
hci_alloc_dev_priv+0x27/0x1c00 net/bluetooth/hci_core.c:2435
hci_alloc_dev include/net/bluetooth/hci_core.h:1484 [inline]
hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:636 [inline]
hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:712 [inline]
hci_uart_tty_ioctl+0x401/0xa70 drivers/bluetooth/hci_ldisc.c:765
tty_ioctl+0x903/0xc50 drivers/tty/tty_io.c:2785
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x114/0x190 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 3825:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1745 [inline]
slab_free_freelist_hook mm/slub.c:1771 [inline]
slab_free mm/slub.c:3686 [inline]
__kmem_cache_free+0x21d/0x410 mm/slub.c:3702
kfree+0x7a/0xf0 mm/slab_common.c:990
hci_release_dev+0x14d3/0x1640 net/bluetooth/hci_core.c:2763
bt_host_release+0x83/0xa0 net/bluetooth/hci_sysfs.c:85
device_release+0x95/0x1c0
kobject_cleanup lib/kobject.c:681 [inline]
kobject_release lib/kobject.c:712 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x178/0x260 lib/kobject.c:729
put_device+0x1f/0x30 drivers/base/core.c:3805
hci_dev_put include/net/bluetooth/hci_core.h:1444 [inline]
hci_dev_cmd+0x2be/0x9b0 net/bluetooth/hci_core.c:795
hci_sock_ioctl+0x415/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x152/0x450 net/socket.c:1194
sock_ioctl+0x455/0x740 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x114/0x190 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x56/0x310 kernel/workqueue.c:1368
__queue_work+0x9b6/0xd70 kernel/workqueue.c:1527
queue_work_on+0x105/0x170 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
__hci_cmd_sync_sk+0xc2a/0xf70 net/bluetooth/hci_sync.c:162
__hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
__hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
hci_cmd_sync_status+0x52/0x130 net/bluetooth/hci_sync.c:288
hci_dev_cmd+0x771/0x9b0
hci_sock_ioctl+0x415/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x152/0x450 net/socket.c:1194
sock_ioctl+0x455/0x740 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x114/0x190 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x56/0x310 kernel/workqueue.c:1368
__queue_work+0x9b6/0xd70 kernel/workqueue.c:1527
queue_work_on+0x105/0x170 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
hci_cmd_timeout+0x199/0x200 net/bluetooth/hci_core.c:1468
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff8881176a0000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff8881176a0000, ffff8881176a2000)
The buggy address belongs to the physical page:
page:ffffea00045da800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1176a0
head:ffffea00045da800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea000472c000 dead000000000002 ffff888100043500
raw: 0000000000000000 0000000080020002 00000001ffffffff 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 1284, tgid 1283 (syz.4.10504), ts 1544848155356, free_ts 1477816296611
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x213/0x220 mm/page_alloc.c:2637
prep_new_page+0x1b/0x110 mm/page_alloc.c:2644
get_page_from_freelist+0x3a98/0x3b10 mm/page_alloc.c:4539
__alloc_pages+0x234/0x610 mm/page_alloc.c:5837
alloc_slab_page+0x6c/0xf0
allocate_slab mm/slub.c:1962 [inline]
new_slab+0x90/0x3e0 mm/slub.c:2015
___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
__slab_alloc+0x5d/0xa0 mm/slub.c:3302
slab_alloc_node mm/slub.c:3387 [inline]
__kmem_cache_alloc_node+0x207/0x2a0 mm/slub.c:3462
kmalloc_trace+0x2a/0xa0 mm/slab_common.c:1028
kmalloc include/linux/slab.h:563 [inline]
audit_log_d_path+0xb9/0x170 kernel/audit.c:2151
audit_log_d_path_exe+0x42/0x70 kernel/audit.c:2222
audit_log_task+0x20d/0x2e0 kernel/auditsc.c:2948
audit_seccomp+0x7a/0x1e0 kernel/auditsc.c:2995
seccomp_log kernel/seccomp.c:994 [inline]
__seccomp_filter+0xca1/0x1f90 kernel/seccomp.c:1280
__secure_computing+0xf0/0x300 kernel/seccomp.c:1342
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1545 [inline]
free_pcp_prepare mm/page_alloc.c:1619 [inline]
free_unref_page_prepare+0x9f1/0xa00 mm/page_alloc.c:3581
free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3677
free_the_page mm/page_alloc.c:830 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5926
__free_slab+0xce/0x1a0 mm/slub.c:2039
free_slab mm/slub.c:2054 [inline]
discard_slab+0x29/0x40 mm/slub.c:2060
__slab_free+0x205/0x280 mm/slub.c:3599
do_slab_free mm/slub.c:3640 [inline]
___cache_free+0xc6/0xd0 mm/slub.c:3696
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0xc5/0x140 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:310
kasan_slab_alloc include/linux/kasan.h:202 [inline]
slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:768
slab_alloc_node mm/slub.c:3421 [inline]
slab_alloc mm/slub.c:3431 [inline]
__kmem_cache_alloc_lru mm/slub.c:3438 [inline]
kmem_cache_alloc+0x175/0x320 mm/slub.c:3447
getname_flags+0xba/0x520 fs/namei.c:139
getname+0x19/0x20 fs/namei.c:218
do_sys_openat2+0xe0/0x870 fs/open.c:1335
do_sys_open fs/open.c:1357 [inline]
__do_sys_openat fs/open.c:1373 [inline]
__se_sys_openat fs/open.c:1368 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1368
Memory state around the buggy address:
ffff8881176a0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881176a0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881176a0a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881176a0a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881176a0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 3874 Comm: syz.1.11245 Tainted: G B 6.1.124-syzkaller-00008-gccc915784332 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__queue_work+0x4f1/0xd70
Code: 39 03 0f 84 40 01 00 00 e8 5c 6c 2a 00 4c 89 e7 e8 64 49 d7 03 49 bd 00 00 00 00 00 fc ff df 4c 8b 65 d0 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 70 09 72 00 49 8b 3e e8 18 42 d7
RSP: 0018:ffffc900001b0c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff8881399ad100
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d00 R08: ffffffff814b261b R09: 0000000000000007
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881176a09c8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881176a09e0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29ed779178 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
delayed_work_timer_fn+0x61/0x80 kernel/workqueue.c:1653
call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1510
expire_timers kernel/time/timer.c:1550 [inline]
__run_timers+0x756/0xa10 kernel/time/timer.c:1826
run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
handle_softirqs+0x1db/0x650 kernel/softirq.c:617
__do_softirq kernel/softirq.c:655 [inline]
invoke_softirq kernel/softirq.c:472 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704
irq_exit_rcu+0x9/0x10 kernel/softirq.c:716
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:pvclock_clocksource_read+0x8/0x6e0 arch/x86/kernel/pvclock.c:68
Code: 8b 45 b8 e9 e9 fe ff ff 22 05 0c 3a 5b 06 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 81 ec 80 00 00 00 49 89 f8 49 be 00 00 00 00 00
RSP: 0018:ffffc9000287ed40 EFLAGS: 00000282
RAX: f3f3f300f1f1f1f1 RBX: ffffea0005d12c00 RCX: ffff8881399ad100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff87b71040
RBP: ffffc9000287ed50 R08: dffffc0000000000 R09: fffff94000ba2581
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000287ede0
R13: dffffc0000000000 R14: 1ffff9200050fdb8 R15: ffffea0005d12c00
kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
kvm_sched_clock_read+0x18/0x40 arch/x86/kernel/kvmclock.c:91
paravirt_sched_clock arch/x86/include/asm/paravirt.h:31 [inline]
sched_clock+0x9/0x10 arch/x86/kernel/tsc.c:253
sched_clock_cpu+0x71/0x2b0 kernel/sched/clock.c:369
local_clock include/linux/sched/clock.h:84 [inline]
__reset_page_owner+0x28/0x190 mm/page_owner.c:162
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1545 [inline]
free_pcp_prepare mm/page_alloc.c:1619 [inline]
free_unref_page_prepare+0x9f1/0xa00 mm/page_alloc.c:3581
free_unref_page_list+0xf1/0x7b0 mm/page_alloc.c:3729
release_pages+0xef9/0xf50 mm/swap.c:1043
__pagevec_release+0x84/0x100 mm/swap.c:1063
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
shmem_undo_range+0x5fc/0x1660 mm/shmem.c:951
shmem_truncate_range mm/shmem.c:1067 [inline]
shmem_evict_inode+0x25f/0xa30 mm/shmem.c:1176
evict+0x529/0x930 fs/inode.c:705
iput_final fs/inode.c:1834 [inline]
iput+0x616/0x690 fs/inode.c:1860
dentry_unlink_inode+0x34e/0x430 fs/dcache.c:405
__dentry_kill+0x447/0x650 fs/dcache.c:611
dentry_kill+0xc0/0x2a0
dput+0x40/0x80 fs/dcache.c:918
__fput+0x56c/0x870 fs/file_table.c:328
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x24d/0x2e0 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xbd0/0x2b80 kernel/exit.c:877
do_group_exit+0x21a/0x2d0 kernel/exit.c:1027
get_signal+0x169d/0x1820 kernel/signal.c:2889
arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe8b198cde9
Code: Unable to access opcode bytes at 0x7fe8b198cdbf.
RSP: 002b:00007fe8b2845038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007fe8b1ba6080 RCX: 00007fe8b198cde9
RDX: 0000000000010106 RSI: 00004000000000c0 RDI: 0000000000000005
RBP: 00007fe8b1a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8b1ba6080 R15: 00007fff7741de38
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0x4f1/0xd70
Code: 39 03 0f 84 40 01 00 00 e8 5c 6c 2a 00 4c 89 e7 e8 64 49 d7 03 49 bd 00 00 00 00 00 fc ff df 4c 8b 65 d0 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 70 09 72 00 49 8b 3e e8 18 42 d7
RSP: 0018:ffffc900001b0c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff8881399ad100
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d00 R08: ffffffff814b261b R09: 0000000000000007
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881176a09c8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881176a09e0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29ed779178 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 39 03 cmp %eax,(%rbx)
2: 0f 84 40 01 00 00 je 0x148
8: e8 5c 6c 2a 00 call 0x2a6c69
d: 4c 89 e7 mov %r12,%rdi
10: e8 64 49 d7 03 call 0x3d74979
15: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
1c: fc ff df
1f: 4c 8b 65 d0 mov -0x30(%rbp),%r12
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 70 09 72 00 call 0x7209a9
39: 49 8b 3e mov (%r14),%rdi
3c: e8 .byte 0xe8
3d: 18 42 d7 sbb %al,-0x29(%rdx)