==================================================================
BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:1014 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1625 [inline]
BUG: KASAN: use-after-free in __run_timers+0x341/0x9b0 kernel/time/timer.c:1861
Write of size 8 at addr ffff888136408a00 by task syz.4.921/3209
CPU: 0 PID: 3209 Comm: syz.4.921 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
__asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356
hlist_move_list include/linux/list.h:1014 [inline]
collect_expired_timers kernel/time/timer.c:1625 [inline]
__run_timers+0x341/0x9b0 kernel/time/timer.c:1861
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1dd/0x5f0 kernel/softirq.c:642
__do_softirq kernel/softirq.c:680 [inline]
invoke_softirq kernel/softirq.c:497 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x55/0x80 kernel/locking/spinlock.c:194
Code: c0 db 0d 87 e8 2c fa b4 fc 4c 89 f7 48 83 3d b1 c8 0b 02 00 74 30 e8 9e 0d 00 00 90 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 06 84 4a fc 65 8b 05 97 5a 00 7b 85 c0 74 05 5b 41 5e 5d c3 e8
RSP: 0018:ffffc9000f8bf5c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000a02 RCX: dffffc0000000000
RDX: ffffc9000dcff678 RSI: 0000000000000a02 RDI: 0000000000000001
RBP: ffffc9000f8bf5d0 R08: ffff88811b7d8007 R09: 1ffff110236fb000
R10: dffffc0000000000 R11: ffffed10236fb001 R12: ffff888121699800
R13: 0000000000000010 R14: 0000000000000001 R15: 0000000000000000
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:141 [inline]
__wake_up_sync_key+0x17b/0x2b0 kernel/sched/wait.c:212
__unix_dgram_recvmsg+0x4b5/0xd90 net/unix/af_unix.c:2492
unix_dgram_recvmsg+0xc7/0xe0 net/unix/af_unix.c:2562
____sys_recvmsg+0x2d6/0x5c0 net/socket.c:-1
___sys_recvmsg+0x210/0x590 net/socket.c:2770
do_recvmmsg+0x370/0x7e0 net/socket.c:2864
__sys_recvmmsg net/socket.c:2943 [inline]
__do_sys_recvmmsg net/socket.c:2966 [inline]
__se_sys_recvmmsg net/socket.c:2959 [inline]
__x64_sys_recvmmsg+0x195/0x250 net/socket.c:2959
x64_sys_call+0x3e7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:300
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8d0f99f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8d10796028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8d0fc26090 RCX: 00007f8d0f99f559
RDX: 0000000000010106 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f8d0fa36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d0fc26128 R14: 00007f8d0fc26090 R15: 00007ffe05cef6f8
Allocated by task 3137:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
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+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
hci_alloc_dev include/net/bluetooth/hci_core.h:1523 [inline]
hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:669 [inline]
hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:754 [inline]
hci_uart_tty_ioctl+0x3c4/0xa70 drivers/bluetooth/hci_ldisc.c:809
tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 3137:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
hci_release_dev+0x12a3/0x13b0 net/bluetooth/hci_core.c:2761
bt_host_release+0x82/0x90 net/bluetooth/hci_sysfs.c:85
device_release+0xa4/0x1d0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:681 [inline]
kobject_release lib/kobject.c:712 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x19d/0x280 lib/kobject.c:729
put_device+0x1f/0x30 drivers/base/core.c:3806
hci_dev_put include/net/bluetooth/hci_core.h:1483 [inline]
hci_dev_cmd+0x279/0x740 net/bluetooth/hci_core.c:795
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x114/0x330 net/socket.c:1192
sock_ioctl+0x475/0x700 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
__kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x51/0x300 kernel/workqueue.c:1368
__queue_work+0x9d0/0xd50 kernel/workqueue.c:1527
queue_work_on+0xde/0x150 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+0xaa8/0xd80 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+0x53/0x120 net/bluetooth/hci_sync.c:288
hci_dev_cmd+0x642/0x740 net/bluetooth/hci_core.c:-1
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x114/0x330 net/socket.c:1192
sock_ioctl+0x475/0x700 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
__kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x51/0x300 kernel/workqueue.c:1368
__queue_work+0x9d0/0xd50 kernel/workqueue.c:1527
queue_work_on+0xde/0x150 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
hci_cmd_timeout+0x191/0x200 net/bluetooth/hci_core.c:1468
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff888136408000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff888136408000, ffff88813640a000)
The buggy address belongs to the physical page:
page:ffffea0004d90200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x136408
head:ffffea0004d90200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea00046f9200 dead000000000004 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 2670, tgid 2668 (syz.3.760), ts 115698963828, free_ts 115390448566
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3e0 mm/slub.c:2020
___slab_alloc+0x70f/0xb70 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc_node+0xa2/0x1e0 mm/slab_common.c:945
kmalloc_node include/linux/slab.h:589 [inline]
kvmalloc_node+0x28a/0x460 mm/util.c:592
kvmalloc include/linux/slab.h:716 [inline]
kvmalloc_array include/linux/slab.h:734 [inline]
kvcalloc include/linux/slab.h:739 [inline]
kvm_dev_ioctl_get_cpuid+0x206/0x780 arch/x86/kvm/cpuid.c:1380
kvm_arch_dev_ioctl+0x3d3/0x890 arch/x86/kvm/x86.c:4649
kvm_dev_ioctl+0xd6/0x1200 virt/kvm/kvm_main.c:5074
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1581 [inline]
free_pcp_prepare mm/page_alloc.c:1655 [inline]
free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
free_unref_page+0x93/0x530 mm/page_alloc.c:3720
free_the_page mm/page_alloc.c:863 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:6021
__free_slab+0xc7/0x1a0 mm/slub.c:2044
free_slab mm/slub.c:2059 [inline]
discard_slab mm/slub.c:2065 [inline]
__unfreeze_partials+0x15a/0x190 mm/slub.c:2614
put_cpu_partial+0xa9/0x100 mm/slub.c:2690
__slab_free+0x1c4/0x280 mm/slub.c:3589
do_slab_free mm/slub.c:3666 [inline]
___cache_free+0xbf/0xd0 mm/slub.c:3722
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311
kasan_slab_alloc include/linux/kasan.h:202 [inline]
slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
slab_alloc_node mm/slub.c:3382 [inline]
kmem_cache_alloc_node+0x179/0x330 mm/slub.c:3429
__alloc_skb+0xe8/0x4a0 net/core/skbuff.c:508
alloc_skb include/linux/skbuff.h:1322 [inline]
alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6189
sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2770
Memory state around the buggy address:
ffff888136408900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888136408980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888136408a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888136408a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888136408b00: 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: 0 PID: 3209 Comm: syz.4.921 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__queue_work+0x582/0xd50 kernel/workqueue.c:-1
Code: b4 00 00 00 e8 0f 5a 29 00 48 bb 00 00 00 00 00 fc ff df 4c 89 ef e8 2d fa b9 03 4c 8b 65 d0 4c 8b 6d c0 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 f0 f4 6e 00 49 8b 3e e8 c8 f5 b9 03
RSP: 0018:ffffc90000007c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ebe540
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed1026c81139 R12: ffff8881364089c8
R13: ffff888132ec5800 R14: 0000000000000000 R15: 000000007fffffff
FS: 00007f8d107966c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000023e030 CR3: 0000000118bbf000 CR4: 00000000003506b0
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+0x46/0x2a0 kernel/time/timer.c:1553
expire_timers kernel/time/timer.c:1599 [inline]
__run_timers+0x672/0x9b0 kernel/time/timer.c:1875
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1dd/0x5f0 kernel/softirq.c:642
__do_softirq kernel/softirq.c:680 [inline]
invoke_softirq kernel/softirq.c:497 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x55/0x80 kernel/locking/spinlock.c:194
Code: c0 db 0d 87 e8 2c fa b4 fc 4c 89 f7 48 83 3d b1 c8 0b 02 00 74 30 e8 9e 0d 00 00 90 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 06 84 4a fc 65 8b 05 97 5a 00 7b 85 c0 74 05 5b 41 5e 5d c3 e8
RSP: 0018:ffffc9000f8bf5c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000a02 RCX: dffffc0000000000
RDX: ffffc9000dcff678 RSI: 0000000000000a02 RDI: 0000000000000001
RBP: ffffc9000f8bf5d0 R08: ffff88811b7d8007 R09: 1ffff110236fb000
R10: dffffc0000000000 R11: ffffed10236fb001 R12: ffff888121699800
R13: 0000000000000010 R14: 0000000000000001 R15: 0000000000000000
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:141 [inline]
__wake_up_sync_key+0x17b/0x2b0 kernel/sched/wait.c:212
__unix_dgram_recvmsg+0x4b5/0xd90 net/unix/af_unix.c:2492
unix_dgram_recvmsg+0xc7/0xe0 net/unix/af_unix.c:2562
____sys_recvmsg+0x2d6/0x5c0 net/socket.c:-1
___sys_recvmsg+0x210/0x590 net/socket.c:2770
do_recvmmsg+0x370/0x7e0 net/socket.c:2864
__sys_recvmmsg net/socket.c:2943 [inline]
__do_sys_recvmmsg net/socket.c:2966 [inline]
__se_sys_recvmmsg net/socket.c:2959 [inline]
__x64_sys_recvmmsg+0x195/0x250 net/socket.c:2959
x64_sys_call+0x3e7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:300
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8d0f99f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8d10796028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8d0fc26090 RCX: 00007f8d0f99f559
RDX: 0000000000010106 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f8d0fa36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d0fc26128 R14: 00007f8d0fc26090 R15: 00007ffe05cef6f8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0x582/0xd50 kernel/workqueue.c:-1
Code: b4 00 00 00 e8 0f 5a 29 00 48 bb 00 00 00 00 00 fc ff df 4c 89 ef e8 2d fa b9 03 4c 8b 65 d0 4c 8b 6d c0 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 f0 f4 6e 00 49 8b 3e e8 c8 f5 b9 03
RSP: 0018:ffffc90000007c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ebe540
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed1026c81139 R12: ffff8881364089c8
R13: ffff888132ec5800 R14: 0000000000000000 R15: 000000007fffffff
FS: 00007f8d107966c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000023e030 CR3: 0000000118bbf000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: c0 db 0d rcr $0xd,%bl
3: 87 e8 xchg %ebp,%eax
5: 2c fa sub $0xfa,%al
7: b4 fc mov $0xfc,%ah
9: 4c 89 f7 mov %r14,%rdi
c: 48 83 3d b1 c8 0b 02 cmpq $0x0,0x20bc8b1(%rip) # 0x20bc8c5
13: 00
14: 74 30 je 0x46
16: e8 9e 0d 00 00 call 0xdb9
1b: 90 nop
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 06 84 4a fc call 0xfc4a8435 <-- trapping instruction
2f: 65 8b 05 97 5a 00 7b mov %gs:0x7b005a97(%rip),%eax # 0x7b005acd
36: 85 c0 test %eax,%eax
38: 74 05 je 0x3f
3a: 5b pop %rbx
3b: 41 5e pop %r14
3d: 5d pop %rbp
3e: c3 ret
3f: e8 .byte 0xe8