==================================================================
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+0x340/0x9f0 kernel/time/timer.c:1861
Write of size 8 at addr ffff888154290a00 by task syz.6.3682/12682
CPU: 0 PID: 12682 Comm: syz.6.3682 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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+0x340/0x9f0 kernel/time/timer.c:1861
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1d7/0x600 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:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_single+0x209/0x490 kernel/smp.c:787
Code: 48 44 89 f6 83 e6 01 31 ff e8 63 87 09 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 2e 83 09 00 e9 a4 00 00 00 f3 90 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 14 83 09 00 eb e9 e8
RSP: 0018:ffffc90000d07520 EFLAGS: 00000293
RAX: ffffffff8167e9ec RBX: 0000000000000000 RCX: ffff88811fe2a880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000d07618 R08: ffffc90000d073e7 R09: 1ffff920001a0e7c
R10: 0000000000000000 R11: ffffffff8134c5a0 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff920001a0ea8
rcu_barrier+0x32e/0x600 kernel/rcu/tree.c:4126
kvm_mmu_uninit_tdp_mmu+0x1d7/0x220 arch/x86/kvm/mmu/tdp_mmu.c:62
kvm_mmu_uninit_vm+0x24/0x50 arch/x86/kvm/mmu/mmu.c:6038
kvm_arch_destroy_vm+0x36b/0x3f0 arch/x86/kvm/x86.c:12710
kvm_destroy_vm virt/kvm/kvm_main.c:1336 [inline]
kvm_put_kvm+0xa85/0x1450 virt/kvm/kvm_main.c:1370
kvm_vm_release+0x46/0x50 virt/kvm/kvm_main.c:1393
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa35/0x2660 kernel/exit.c:886
do_group_exit+0x210/0x2d0 kernel/exit.c:1028
get_signal+0x13b5/0x1520 kernel/signal.c:2891
arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3b6739c799
Code: Unable to access opcode bytes at 0x7f3b6739c76f.
RSP: 002b:00007f3b683050e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f3b67615fa8 RCX: 00007f3b6739c799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f3b67615fac
RBP: 00007f3b67615fa0 R08: 0029c5725a897377 R09: 0000000000000000
R10: 000000000000000b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b67616038 R14: 00007ffe72087b60 R15: 00007ffe72087c48
Allocated by task 12612:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x25/0x30 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+0xb1/0x1e0 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:1505 [inline]
hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
hci_uart_tty_ioctl+0x3c8/0xa20 drivers/bluetooth/hci_ldisc.c:774
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 12612:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x31/0x50 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:1465 [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:1191
sock_ioctl+0x4bd/0x710 net/socket.c:1310
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+0x9b1/0xd30 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+0xa7f/0xd30 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+0x648/0x740 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:1191
sock_ioctl+0x4bd/0x710 net/socket.c:1310
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+0x9b1/0xd30 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+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11e0 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 ffff888154290000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff888154290000, ffff888154292000)
The buggy address belongs to the physical page:
page:ffffea000550a400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x154290
head:ffffea000550a400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000001 ffff888100043500
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), pid 9181, tgid 9180 (syz.0.2712), ts 364399138189, free_ts 266850332386
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2670
prep_new_page+0x1c/0x110 mm/page_alloc.c:2677
get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4583
__alloc_pages+0x1d9/0x480 mm/page_alloc.c:5897
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3d0 mm/slub.c:2020
___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
kmalloc_trace+0x29/0xb0 mm/slab_common.c:1028
kmalloc include/linux/slab.h:563 [inline]
audit_log_d_path+0xc6/0x240 kernel/audit.c:2151
audit_log_d_path_exe+0x42/0x70 kernel/audit.c:2222
audit_log_task+0x214/0x300 kernel/auditsc.c:2948
audit_seccomp+0x7f/0x160 kernel/auditsc.c:2995
seccomp_log kernel/seccomp.c:994 [inline]
__seccomp_filter+0x1830/0x1af0 kernel/seccomp.c:1310
__secure_computing+0xea/0x290 kernel/seccomp.c:1340
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1578 [inline]
free_pcp_prepare mm/page_alloc.c:1652 [inline]
free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3618
free_unref_page+0x95/0x540 mm/page_alloc.c:3716
free_the_page mm/page_alloc.c:863 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:5986
__vunmap+0x9c0/0xb80 mm/vmalloc.c:2739
__vfree mm/vmalloc.c:2788 [inline]
vfree+0x61/0x90 mm/vmalloc.c:2819
free_pg_vec net/packet/af_packet.c:4372 [inline]
packet_set_ring+0x1986/0x24a0 net/packet/af_packet.c:4593
packet_release+0x737/0xcb0 net/packet/af_packet.c:3201
__sock_release net/socket.c:652 [inline]
sock_close+0xf1/0x290 net/socket.c:1389
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Memory state around the buggy address:
ffff888154290900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888154290980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888154290a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888154290a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888154290b00: 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: 12682 Comm: syz.6.3682 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__queue_work+0x575/0xd30 kernel/workqueue.c:-1
Code: 39 2b 0f 84 b9 00 00 00 e8 48 46 29 00 4c 89 ff e8 60 70 b8 03 49 bc 00 00 00 00 00 fc ff df 4c 8b 6d d0 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 9c 78 6e 00 49 8b 7d 00 e8 f3 6b
RSP: 0018:ffffc90000007c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff88811fe2a880
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: fffffffffffffffb
R10: dffffc0000000000 R11: ffffed102a852139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881542909c8 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001200 CR3: 000000015f0ec000 CR4: 00000000003526b0
DR0: 0000000000000004 DR1: 0000000000000800 DR2: 0000000000000024
DR3: 0000000000000005 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+0x689/0x9f0 kernel/time/timer.c:1875
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1d7/0x600 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:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_single+0x209/0x490 kernel/smp.c:787
Code: 48 44 89 f6 83 e6 01 31 ff e8 63 87 09 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 2e 83 09 00 e9 a4 00 00 00 f3 90 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 14 83 09 00 eb e9 e8
RSP: 0018:ffffc90000d07520 EFLAGS: 00000293
RAX: ffffffff8167e9ec RBX: 0000000000000000 RCX: ffff88811fe2a880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000d07618 R08: ffffc90000d073e7 R09: 1ffff920001a0e7c
R10: 0000000000000000 R11: ffffffff8134c5a0 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff920001a0ea8
rcu_barrier+0x32e/0x600 kernel/rcu/tree.c:4126
kvm_mmu_uninit_tdp_mmu+0x1d7/0x220 arch/x86/kvm/mmu/tdp_mmu.c:62
kvm_mmu_uninit_vm+0x24/0x50 arch/x86/kvm/mmu/mmu.c:6038
kvm_arch_destroy_vm+0x36b/0x3f0 arch/x86/kvm/x86.c:12710
kvm_destroy_vm virt/kvm/kvm_main.c:1336 [inline]
kvm_put_kvm+0xa85/0x1450 virt/kvm/kvm_main.c:1370
kvm_vm_release+0x46/0x50 virt/kvm/kvm_main.c:1393
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa35/0x2660 kernel/exit.c:886
do_group_exit+0x210/0x2d0 kernel/exit.c:1028
get_signal+0x13b5/0x1520 kernel/signal.c:2891
arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3b6739c799
Code: Unable to access opcode bytes at 0x7f3b6739c76f.
RSP: 002b:00007f3b683050e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f3b67615fa8 RCX: 00007f3b6739c799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f3b67615fac
RBP: 00007f3b67615fa0 R08: 0029c5725a897377 R09: 0000000000000000
R10: 000000000000000b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b67616038 R14: 00007ffe72087b60 R15: 00007ffe72087c48
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0x575/0xd30 kernel/workqueue.c:-1
Code: 39 2b 0f 84 b9 00 00 00 e8 48 46 29 00 4c 89 ff e8 60 70 b8 03 49 bc 00 00 00 00 00 fc ff df 4c 8b 6d d0 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 9c 78 6e 00 49 8b 7d 00 e8 f3 6b
RSP: 0018:ffffc90000007c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff88811fe2a880
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: fffffffffffffffb
R10: dffffc0000000000 R11: ffffed102a852139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881542909c8 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001200 CR3: 000000015f0ec000 CR4: 00000000003526b0
DR0: 0000000000000004 DR1: 0000000000000800 DR2: 0000000000000024
DR3: 0000000000000005 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 rex.W
1: 44 89 f6 mov %r14d,%esi
4: 83 e6 01 and $0x1,%esi
7: 31 ff xor %edi,%edi
9: e8 63 87 09 00 call 0x98771
e: 41 83 e6 01 and $0x1,%r14d
12: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
19: fc ff df
1c: 75 0a jne 0x28
1e: e8 2e 83 09 00 call 0x98351
23: e9 a4 00 00 00 jmp 0xcc
28: f3 90 pause
* 2a: f7 44 24 48 01 00 00 testl $0x1,0x48(%rsp) <-- trapping instruction
31: 00
32: 0f 84 8f 00 00 00 je 0xc7
38: e8 14 83 09 00 call 0x98351
3d: eb e9 jmp 0x28
3f: e8 .byte 0xe8