==================================================================
BUG: KASAN: slab-out-of-bounds in __hlist_del include/linux/list.h:791 [inline]
BUG: KASAN: slab-out-of-bounds in detach_timer kernel/time/timer.c:824 [inline]
BUG: KASAN: slab-out-of-bounds in expire_timers kernel/time/timer.c:1482 [inline]
BUG: KASAN: slab-out-of-bounds in __run_timers+0x759/0xb60 kernel/time/timer.c:1817
Write of size 8 at addr ffff8881e0e131c8 by task syz.1.542/2382
CPU: 1 PID: 2382 Comm: syz.1.542 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack+0x1e/0x20 lib/dump_stack.c:77
dump_stack+0x15b/0x1b8 lib/dump_stack.c:118
print_address_description+0x8d/0x4c0 mm/kasan/report.c:384
__kasan_report+0xef/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
__asan_report_store8_noabort+0x17/0x20 mm/kasan/generic_report.c:137
__hlist_del include/linux/list.h:791 [inline]
detach_timer kernel/time/timer.c:824 [inline]
expire_timers kernel/time/timer.c:1482 [inline]
__run_timers+0x759/0xb60 kernel/time/timer.c:1817
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
__do_softirq+0x236/0x660 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x197/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:preempt_schedule_irq+0x96/0x110 kernel/sched/core.c:4560
Code: 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 90 21 17 fd fb bf 01 00 00 00 b5 e7 ff ff fa bf 01 00 00 00 e8 2a 23 17 fd 65 48 8b 1d 32 3c
RSP: 0018:ffff8881daa67520 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103a8ce90f RBX: 0000000000000000 RCX: ffffffff86542900
RDX: ffffc90000944000 RSI: 000000000002b564 RDI: 0000000000000001
RBP: ffff8881daa67598 R08: dffffc0000000000 R09: ffffed103edeb135
R10: ffffed103edeb135 R11: 1ffff1103edeb134 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1103b54cea4
retint_kernel+0x1b/0x1b
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x80 kernel/kcov.c:275
Code: 03 00 00 00 4a 89 7c 01 10 4a 89 74 01 18 4a 89 44 01 20 48 ff c2 48 89 11 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 <48> 8b 45 08 65 48 8b 15 40 0b a3 7e 65 8b 0d 45 0b a3 7e f7 c1 00
RSP: 0018:ffff8881daa67658 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 1ffff1103b54cef1 RCX: 0000000000000002
RDX: ffff8881daa6778c RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881daa67658 R08: dffffc0000000000 R09: ffff8881daa676c8
R10: ffffed103b54cee5 R11: 1ffff1103b54ced9 R12: ffff8881daa67780
R13: 1ffff1103b54cef2 R14: 0000000000000000 R15: 0000000000000008
stack_trace_consume_entry+0xa5/0x250 kernel/stacktrace.c:89
arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xaa/0xf0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x1c3/0x280 mm/kasan/common.c:487
kasan_slab_free+0xe/0x10 mm/kasan/common.c:496
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook+0xb7/0x180 mm/slub.c:1494
slab_free mm/slub.c:3080 [inline]
kfree+0xbe/0x260 mm/slub.c:4071
selinux_bpf_prog_free+0x42/0x50 security/selinux/hooks.c:6934
security_bpf_prog_free+0x45/0x80 security/security.c:2437
__bpf_prog_put_rcu+0x30b/0x380 kernel/bpf/syscall.c:1339
__bpf_prog_put_noref+0xb6/0xd0 kernel/bpf/syscall.c:1352
bpf_prog_load+0xb42/0xe10 kernel/bpf/syscall.c:1763
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x435/0x570 kernel/bpf/syscall.c:2849
__x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:2849
do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f9de5752969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f9de3dbb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9de5979fa0 RCX: 00007f9de5752969
RDX: 0000000000000048 RSI: 000020000000e000 RDI: 0000000000000005
RBP: 00007f9de57d4ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9de5979fa0 R15: 00007ffcbb6d3d28
Allocated by task 2369:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x162/0x200 mm/kasan/common.c:529
kasan_kmalloc+0xd/0x20 mm/kasan/common.c:543
__kmalloc+0x12a/0x2f0 mm/slub.c:3913
__kmalloc_node include/linux/slab.h:422 [inline]
kmalloc_node include/linux/slab.h:599 [inline]
kvmalloc_node+0x88/0xf0 mm/util.c:596
kvmalloc include/linux/mm.h:761 [inline]
kvmalloc_array include/linux/mm.h:779 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:470 [inline]
ptr_ring_init include/linux/ptr_ring.h:488 [inline]
skb_array_init include/linux/skb_array.h:182 [inline]
pfifo_fast_init+0x260/0x7a0 net/sched/sch_generic.c:784
qdisc_create_dflt+0x135/0x270 net/sched/sch_generic.c:944
mq_init+0x2df/0x660 net/sched/sch_mq.c:90
qdisc_create_dflt+0x135/0x270 net/sched/sch_generic.c:944
attach_default_qdiscs net/sched/sch_generic.c:1113 [inline]
dev_activate+0x132/0xc80 net/sched/sch_generic.c:1154
__dev_open+0x2d3/0x3f0 net/core/dev.c:1335
__dev_change_flags+0x20a/0x6a0 net/core/dev.c:7958
dev_change_flags+0x88/0x1a0 net/core/dev.c:8029
dev_ifsioc+0x110/0xa40 net/core/dev_ioctl.c:226
dev_ioctl+0x550/0xb80 net/core/dev_ioctl.c:483
sock_do_ioctl+0x235/0x330 net/socket.c:1081
sock_ioctl+0x505/0x710 net/socket.c:1198
do_vfs_ioctl+0x753/0x13f0 fs/ioctl.c:47
ksys_ioctl fs/ioctl.c:742 [inline]
__do_sys_ioctl fs/ioctl.c:749 [inline]
__se_sys_ioctl fs/ioctl.c:747 [inline]
__x64_sys_ioctl+0xe1/0x120 fs/ioctl.c:747
do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Freed by task 2367:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x1c3/0x280 mm/kasan/common.c:487
kasan_slab_free+0xe/0x10 mm/kasan/common.c:496
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook+0xb7/0x180 mm/slub.c:1494
slab_free mm/slub.c:3080 [inline]
kfree+0xbe/0x260 mm/slub.c:4071
kvfree+0x4c/0x50 mm/util.c:625
ptr_ring_cleanup include/linux/ptr_ring.h:670 [inline]
pfifo_fast_destroy+0x86/0xd0 net/sched/sch_generic.c:810
qdisc_destroy+0xde/0x440 net/sched/sch_generic.c:1008
qdisc_put net/sched/sch_generic.c:1035 [inline]
shutdown_scheduler_queue net/sched/sch_generic.c:1372 [inline]
netdev_for_each_tx_queue include/linux/netdevice.h:2194 [inline]
dev_shutdown+0x198/0x580 net/sched/sch_generic.c:1378
rollback_registered_many+0x7af/0xf40 net/core/dev.c:8643
rollback_registered net/core/dev.c:8692 [inline]
unregister_netdevice_queue+0x2e1/0x450 net/core/dev.c:9786
unregister_netdevice include/linux/netdevice.h:2732 [inline]
__tun_detach+0xb40/0x1340 drivers/net/tun.c:747
tun_detach drivers/net/tun.c:763 [inline]
tun_chr_close+0x92/0x140 drivers/net/tun.c:3563
__fput+0x2a3/0x730 fs/file_table.c:281
____fput+0x15/0x20 fs/file_table.c:314
task_work_run+0x146/0x170 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x195/0x1b0 arch/x86/entry/common.c:163
prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
do_syscall_64+0x13e/0x170 arch/x86/entry/common.c:300
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
The buggy address belongs to the object at ffff8881e0e10000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 4552 bytes to the right of
8192-byte region [ffff8881e0e10000, ffff8881e0e12000)
The buggy address belongs to the page:
page:ffffea0007838400 refcount:1 mapcount:0 mapping:ffff8881f5c0c500 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c0c500
raw: 0000000000000000 0000000000020002 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)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x35e/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x1296/0x1310 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x202/0x4b0 mm/page_alloc.c:4894
alloc_slab_page+0x3c/0x3b0 mm/slub.c:343
allocate_slab mm/slub.c:1683 [inline]
new_slab+0x93/0x420 mm/slub.c:1749
new_slab_objects mm/slub.c:2505 [inline]
___slab_alloc+0x29e/0x420 mm/slub.c:2667
__slab_alloc+0x63/0xa0 mm/slub.c:2707
slab_alloc_node mm/slub.c:2792 [inline]
slab_alloc mm/slub.c:2837 [inline]
__kmalloc+0x176/0x2f0 mm/slub.c:3909
__kmalloc_node include/linux/slab.h:422 [inline]
kmalloc_node include/linux/slab.h:599 [inline]
kvmalloc_node+0x88/0xf0 mm/util.c:596
kvmalloc include/linux/mm.h:761 [inline]
kvmalloc_array include/linux/mm.h:779 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:470 [inline]
ptr_ring_init include/linux/ptr_ring.h:488 [inline]
skb_array_init include/linux/skb_array.h:182 [inline]
pfifo_fast_init+0x112/0x7a0 net/sched/sch_generic.c:784
qdisc_create_dflt+0x135/0x270 net/sched/sch_generic.c:944
mq_init+0x2df/0x660 net/sched/sch_mq.c:90
qdisc_create_dflt+0x135/0x270 net/sched/sch_generic.c:944
attach_default_qdiscs net/sched/sch_generic.c:1113 [inline]
dev_activate+0x132/0xc80 net/sched/sch_generic.c:1154
__dev_open+0x2d3/0x3f0 net/core/dev.c:1335
__dev_change_flags+0x20a/0x6a0 net/core/dev.c:7958
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
free_pcp_prepare mm/page_alloc.c:1233 [inline]
free_unref_page_prepare+0x2a9/0x3a0 mm/page_alloc.c:3085
free_unref_page mm/page_alloc.c:3134 [inline]
free_the_page mm/page_alloc.c:4954 [inline]
__free_pages+0xaa/0x110 mm/page_alloc.c:4962
pcpu_free_pages mm/percpu-vm.c:64 [inline]
pcpu_depopulate_chunk mm/percpu-vm.c:328 [inline]
pcpu_balance_workfn+0x8c7/0x14b0 mm/percpu.c:1865
process_one_work+0x73b/0xcc0 kernel/workqueue.c:2290
worker_thread+0xa5c/0x13b0 kernel/workqueue.c:2436
kthread+0x31e/0x3a0 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Memory state around the buggy address:
ffff8881e0e13080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881e0e13100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881e0e13180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8881e0e13200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881e0e13280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1e45b6067 P4D 1e45b6067 PUD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2382 Comm: syz.1.542 Tainted: G B 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881d4673f00
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881e0e131c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffa568
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e0e131c0
FS: 00007f9de3dbb6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001eac61000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
call_timer_fn+0x3c/0x380 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x81d/0xb60 kernel/time/timer.c:1817
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
__do_softirq+0x236/0x660 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x197/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:preempt_schedule_irq+0x96/0x110 kernel/sched/core.c:4560
Code: 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 90 21 17 fd fb bf 01 00 00 00 b5 e7 ff ff fa bf 01 00 00 00 e8 2a 23 17 fd 65 48 8b 1d 32 3c
RSP: 0018:ffff8881daa67520 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103a8ce90f RBX: 0000000000000000 RCX: ffffffff86542900
RDX: ffffc90000944000 RSI: 000000000002b564 RDI: 0000000000000001
RBP: ffff8881daa67598 R08: dffffc0000000000 R09: ffffed103edeb135
R10: ffffed103edeb135 R11: 1ffff1103edeb134 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1103b54cea4
retint_kernel+0x1b/0x1b
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x80 kernel/kcov.c:275
Code: 03 00 00 00 4a 89 7c 01 10 4a 89 74 01 18 4a 89 44 01 20 48 ff c2 48 89 11 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 <48> 8b 45 08 65 48 8b 15 40 0b a3 7e 65 8b 0d 45 0b a3 7e f7 c1 00
RSP: 0018:ffff8881daa67658 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 1ffff1103b54cef1 RCX: 0000000000000002
RDX: ffff8881daa6778c RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881daa67658 R08: dffffc0000000000 R09: ffff8881daa676c8
R10: ffffed103b54cee5 R11: 1ffff1103b54ced9 R12: ffff8881daa67780
R13: 1ffff1103b54cef2 R14: 0000000000000000 R15: 0000000000000008
stack_trace_consume_entry+0xa5/0x250 kernel/stacktrace.c:89
arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xaa/0xf0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x1c3/0x280 mm/kasan/common.c:487
kasan_slab_free+0xe/0x10 mm/kasan/common.c:496
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook+0xb7/0x180 mm/slub.c:1494
slab_free mm/slub.c:3080 [inline]
kfree+0xbe/0x260 mm/slub.c:4071
selinux_bpf_prog_free+0x42/0x50 security/selinux/hooks.c:6934
security_bpf_prog_free+0x45/0x80 security/security.c:2437
__bpf_prog_put_rcu+0x30b/0x380 kernel/bpf/syscall.c:1339
__bpf_prog_put_noref+0xb6/0xd0 kernel/bpf/syscall.c:1352
bpf_prog_load+0xb42/0xe10 kernel/bpf/syscall.c:1763
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x435/0x570 kernel/bpf/syscall.c:2849
__x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:2849
do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f9de5752969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f9de3dbb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9de5979fa0 RCX: 00007f9de5752969
RDX: 0000000000000048 RSI: 000020000000e000 RDI: 0000000000000005
RBP: 00007f9de57d4ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9de5979fa0 R15: 00007ffcbb6d3d28
Modules linked in:
CR2: 0000000000000000
---[ end trace c4b1b0d4e2434a85 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202
RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881d4673f00
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881e0e131c0
RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffa568
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e0e131c0
FS: 00007f9de3dbb6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001eac61000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 9c 8f 44 24 20 f6 add %bl,-0x9dfdbbc(%rdi,%rcx,4)
9: 44 24 21 rex.R and $0x21,%al
c: 02 74 0b 0f add 0xf(%rbx,%rcx,1),%dh
10: 0b 48 f7 or -0x9(%rax),%ecx
13: 03 08 add (%rax),%ecx
15: 00 00 add %al,(%rax)
17: 00 74 4d bf add %dh,-0x41(%rbp,%rcx,2)
1b: 01 00 add %eax,(%rax)
1d: 00 00 add %al,(%rax)
1f: e8 90 21 17 fd call 0xfd1721b4
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 b5 e7 ff ff call 0xffffe7e4 <-- trapping instruction
2f: fa cli
30: bf 01 00 00 00 mov $0x1,%edi
35: e8 2a 23 17 fd call 0xfd172364
3a: 65 gs
3b: 48 rex.W
3c: 8b .byte 0x8b
3d: 1d .byte 0x1d
3e: 32 .byte 0x32
3f: 3c .byte 0x3c