==================================================================
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:1576 [inline]
BUG: KASAN: use-after-free in __run_timers+0x34a/0xa10 kernel/time/timer.c:1812
Write of size 8 at addr ffff888115a38a00 by task syz.0.1600/6427
CPU: 1 PID: 6427 Comm: syz.0.1600 Not tainted 6.1.129-syzkaller-00005-g19a0fb1d3513 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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_move_list include/linux/list.h:1014 [inline]
collect_expired_timers kernel/time/timer.c:1576 [inline]
__run_timers+0x34a/0xa10 kernel/time/timer.c:1812
run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839
handle_softirqs+0x1db/0x650 kernel/softirq.c:624
__do_softirq kernel/softirq.c:662 [inline]
invoke_softirq kernel/softirq.c:479 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:711
irq_exit_rcu+0x9/0x10 kernel/softirq.c:723
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:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:36
Code: 01 f0 5d 03 31 db eb d3 cc cc 55 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 7f eb ff ff 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <55> 48 89 e5 89 f6 48 8b 4d 08 ba 01 00 00 00 e8 5c eb ff ff 5d c3
RSP: 0018:ffffc90000d2f078 EFLAGS: 00000293
RAX: ffffffff81a1664b RBX: 0000000000000000 RCX: ffff888113ca8000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea000562a934
RBP: ffffc90000d2f128 R08: ffffffff81a16641 R09: fffff94000ac5521
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffd4000ac5520
R13: ffff88813bbba110 R14: ffffea000562a900 R15: 0000000000000001
truncate_inode_folio+0x5d/0x70 mm/truncate.c:196
shmem_undo_range+0x49d/0x1660 mm/shmem.c:951
shmem_truncate_range mm/shmem.c:1071 [inline]
shmem_evict_inode+0x25f/0xa30 mm/shmem.c:1180
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 fs/dcache.c:-1
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: 0033:0x7f5ee218d169
Code: Unable to access opcode bytes at 0x7f5ee218d13f.
RSP: 002b:00007f5ee2f9d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f5ee23a6248 RCX: 00007f5ee218d169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5ee23a6248
RBP: 00007f5ee23a6240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ee23a624c
R13: 0000000000000000 R14: 00007ffd2a318150 R15: 00007ffd2a318238
Allocated by task 6351:
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 6351:
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 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+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+0x39e/0x9b0 net/bluetooth/hci_core.c:749
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 ffff888115a38000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff888115a38000, ffff888115a3a000)
The buggy address belongs to the physical page:
page:ffffea0004568e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x115a38
head:ffffea0004568e00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea00046f7e00 dead000000000004 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 0x1d28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 140, tgid 140 (dhcpcd), ts 34309639251, free_ts 34309547368
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 include/linux/gfp.h:-1
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
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc_node_track_caller+0xa2/0x1e0 mm/slab_common.c:958
kmalloc_reserve net/core/skbuff.c:446 [inline]
__alloc_skb+0x125/0x2d0 net/core/skbuff.c:515
alloc_skb include/linux/skbuff.h:1290 [inline]
netlink_dump+0x1f0/0xd40 net/netlink/af_netlink.c:2195
netlink_recvmsg+0x6ca/0x1180 net/netlink/af_netlink.c:1942
____sys_recvmsg+0x285/0x530 net/socket.c:-1
___sys_recvmsg net/socket.c:2770 [inline]
__sys_recvmsg+0x2e9/0x3d0 net/socket.c:2800
__do_sys_recvmsg net/socket.c:2810 [inline]
__se_sys_recvmsg net/socket.c:2807 [inline]
__x64_sys_recvmsg+0x7f/0x90 net/socket.c:2807
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 mm/slub.c:2060 [inline]
__unfreeze_partials+0x165/0x1a0 mm/slub.c:2609
put_cpu_partial+0xa9/0x100 mm/slub.c:2685
__slab_free+0x1c8/0x280 mm/slub.c:3563
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]
kmem_cache_alloc_node+0x188/0x330 mm/slub.c:3468
__alloc_skb+0xcc/0x2d0 net/core/skbuff.c:505
alloc_skb include/linux/skbuff.h:1290 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1184 [inline]
netlink_sendmsg+0x7a6/0xd30 net/netlink/af_netlink.c:1835
sock_sendmsg_nosec net/socket.c:716 [inline]
__sock_sendmsg net/socket.c:728 [inline]
__sys_sendto+0x480/0x600 net/socket.c:2143
Memory state around the buggy address:
ffff888115a38900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888115a38980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888115a38a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888115a38a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888115a38b00: 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: 6427 Comm: syz.0.1600 Tainted: G B 6.1.129-syzkaller-00005-g19a0fb1d3513 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__queue_work+0x4f1/0xd70 kernel/workqueue.c:-1
Code: 39 03 0f 84 40 01 00 00 e8 4c 6e 2a 00 4c 89 e7 e8 e4 cf 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 30 1b 72 00 49 8b 3e e8 98 c8 d7
RSP: 0018:ffffc900001b0c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff888113ca8000
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d00 R08: ffffffff814b279b R09: 0000000000000007
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888115a389c8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888115a389e0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000109030 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:624
__do_softirq kernel/softirq.c:662 [inline]
invoke_softirq kernel/softirq.c:479 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:711
irq_exit_rcu+0x9/0x10 kernel/softirq.c:723
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:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:36
Code: 01 f0 5d 03 31 db eb d3 cc cc 55 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 7f eb ff ff 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <55> 48 89 e5 89 f6 48 8b 4d 08 ba 01 00 00 00 e8 5c eb ff ff 5d c3
RSP: 0018:ffffc90000d2f078 EFLAGS: 00000293
RAX: ffffffff81a1664b RBX: 0000000000000000 RCX: ffff888113ca8000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea000562a934
RBP: ffffc90000d2f128 R08: ffffffff81a16641 R09: fffff94000ac5521
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffd4000ac5520
R13: ffff88813bbba110 R14: ffffea000562a900 R15: 0000000000000001
truncate_inode_folio+0x5d/0x70 mm/truncate.c:196
shmem_undo_range+0x49d/0x1660 mm/shmem.c:951
shmem_truncate_range mm/shmem.c:1071 [inline]
shmem_evict_inode+0x25f/0xa30 mm/shmem.c:1180
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 fs/dcache.c:-1
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: 0033:0x7f5ee218d169
Code: Unable to access opcode bytes at 0x7f5ee218d13f.
RSP: 002b:00007f5ee2f9d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f5ee23a6248 RCX: 00007f5ee218d169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5ee23a6248
RBP: 00007f5ee23a6240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ee23a624c
R13: 0000000000000000 R14: 00007ffd2a318150 R15: 00007ffd2a318238
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0x4f1/0xd70 kernel/workqueue.c:-1
Code: 39 03 0f 84 40 01 00 00 e8 4c 6e 2a 00 4c 89 e7 e8 e4 cf 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 30 1b 72 00 49 8b 3e e8 98 c8 d7
RSP: 0018:ffffc900001b0c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff888113ca8000
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d00 R08: ffffffff814b279b R09: 0000000000000007
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888115a389c8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888115a389e0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000109030 CR3: 000000000700f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 01 f0 add %esi,%eax
2: 5d pop %rbp
3: 03 31 add (%rcx),%esi
5: db eb fucomi %st(3),%st
7: d3 cc ror %cl,%esp
9: cc int3
a: 55 push %rbp
b: 48 89 e5 mov %rsp,%rbp
e: 89 f6 mov %esi,%esi
10: 48 8b 4d 08 mov 0x8(%rbp),%rcx
14: 31 d2 xor %edx,%edx
16: e8 7f eb ff ff call 0xffffeb9a
1b: 5d pop %rbp
1c: c3 ret
1d: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
24: 00 00 00
27: 0f 1f 00 nopl (%rax)
* 2a: 55 push %rbp <-- trapping instruction
2b: 48 89 e5 mov %rsp,%rbp
2e: 89 f6 mov %esi,%esi
30: 48 8b 4d 08 mov 0x8(%rbp),%rcx
34: ba 01 00 00 00 mov $0x1,%edx
39: e8 5c eb ff ff call 0xffffeb9a
3e: 5d pop %rbp
3f: c3 ret