general protection fault in debug_check_no_obj

Kernel	Title	Count	Last	Reported	Patched	Status
linux-4.19	general protection fault in debug_check_no_obj_freed (2)	2	835d	939d	0/1	auto-closed as invalid on 2022/05/11 17:22
upstream	general protection fault in debug_check_no_obj_freed (7) fs batman	3	305d	352d	0/26	auto-obsoleted due to no activity on 2023/09/24 06:05
linux-4.19	general protection fault in debug_check_no_obj_freed	1	1325d	1325d	0/1	auto-closed as invalid on 2021/01/06 22:10
upstream	general protection fault in debug_check_no_obj_freed (4) net	1	1097d	1091d	0/26	auto-closed as invalid on 2021/06/24 04:15
upstream	general protection fault in debug_check_no_obj_freed (5) kvm	4	993d	1013d	0/26	auto-closed as invalid on 2021/11/05 02:52
upstream	general protection fault in debug_check_no_obj_freed (6) tomoyo	2	900d	897d	0/26	auto-closed as invalid on 2022/02/06 02:57
upstream	general protection fault in debug_check_no_obj_freed (3) mm	7	1301d	1313d	0/26	auto-closed as invalid on 2021/01/30 14:32
upstream	general protection fault in debug_check_no_obj_freed mm	2	2221d	2219d	0/26	closed as invalid on 2018/07/17 14:23

bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7191 Comm: syz-executor0 Not tainted 4.19.0+ #84 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:778 [inline] RIP: 0010:debug_check_no_obj_freed+0x1bb/0x58d lib/debugobjects.c:818 Code: 48 8b b5 48 ff ff ff 48 c7 c0 60 fe f9 8a 4c 8b 2c 30 4d 85 ed 0f 84 87 02 00 00 31 f6 4d 89 e7 41 89 f4 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 91 02 00 00 49 8d 7d 18 41 83 c4 01 49 8b 5d RSP: 0018:ffff8801bca7b148 EFLAGS: 00010006 RAX: 0407040646640706 RBX: 2038203233203833 RCX: 0000000000000001 RDX: 3320382030363120 RSI: 0000000000000000 RDI: ffffffff890113b0 RBP: ffff8801bca7b238 R08: ffffed003794f616 R09: ffffed003794f615 R10: ffffed003794f615 R11: 0000000000000003 R12: 0000000000000004 R13: 2038203233203833 R14: dffffc0000000000 R15: ffffffff8b030c68 FS: 00007f48a7454700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000160d3f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: free_pages_prepare mm/page_alloc.c:1035 [inline] free_pcp_prepare mm/page_alloc.c:1049 [inline] free_unref_page_prepare mm/page_alloc.c:2744 [inline] free_unref_page_list+0x3c4/0x11e0 mm/page_alloc.c:2813 shrink_page_list+0x6dc3/0xccd0 mm/vmscan.c:1501 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1963 shrink_list mm/vmscan.c:2275 [inline] shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2540 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2755 shrink_zones mm/vmscan.c:2987 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264 __perform_reclaim mm/page_alloc.c:3774 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline] __alloc_pages_slowpath+0x9ed/0x2dc0 mm/page_alloc.c:4197 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945 __do_page_cache_readahead+0x383/0x980 mm/readahead.c:195 ra_submit mm/internal.h:66 [inline] do_sync_mmap_readahead mm/filemap.c:2459 [inline] filemap_fault+0xf4e/0x25f0 mm/filemap.c:2535 __do_fault+0x100/0x6b0 mm/memory.c:2991 do_read_fault mm/memory.c:3403 [inline] do_fault mm/memory.c:3529 [inline] handle_pte_fault mm/memory.c:3760 [inline] __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 RSP: 0018:ffff8801bca7f9c0 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000001000 RDX: 0000000000001000 RSI: 00000000200001c0 RDI: ffff8801a9e7d000 RBP: ffff8801bca7f9f8 R08: 0000000000000000 R09: 0000000000000040 R10: ffffed00353cfbff R11: ffff8801a9e7dfff R12: 00000000200011c0 R13: 00000000200001c0 R14: ffff8801a9e7d000 R15: 00007ffffffff000 copy_page_from_iter_iovec lib/iov_iter.c:290 [inline] copy_page_from_iter+0x3d5/0x8e0 lib/iov_iter.c:861 pipe_write+0x238/0xec0 fs/pipe.c:429 call_write_iter include/linux/fs.h:1808 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f48a7453c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 00000000fffffef3 RSI: 00000000200001c0 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48a74546d4 R13: 00000000004c2883 R14: 00000000004d8568 R15: 00000000ffffffff Modules linked in: ====================================================== WARNING: possible circular locking dependency detected 4.19.0+ #84 Not tainted ------------------------------------------------------ syz-executor0/7191 is trying to acquire lock: 0000000064a5687d ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 but task is already holding lock: 00000000ca43533e (&obj_hash[i].lock){-.-.}, at: __debug_check_no_obj_freed lib/debugobjects.c:777 [inline] 00000000ca43533e (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0x17a/0x58d lib/debugobjects.c:818 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&obj_hash[i].lock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 __debug_object_init+0x127/0x1290 lib/debugobjects.c:384 debug_object_init+0x16/0x20 lib/debugobjects.c:432 debug_hrtimer_init kernel/time/hrtimer.c:410 [inline] debug_init kernel/time/hrtimer.c:458 [inline] hrtimer_init+0x97/0x490 kernel/time/hrtimer.c:1308 init_dl_task_timer+0x1b/0x50 kernel/sched/deadline.c:1057 __sched_fork+0x2ae/0x590 kernel/sched/core.c:2166 init_idle+0x75/0x800 kernel/sched/core.c:5382 sched_init+0xb33/0xc02 kernel/sched/core.c:6065 start_kernel+0x4ed/0xa5a init/main.c:607 x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:472 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #2 (&rq->lock){-.-.}: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144 rq_lock kernel/sched/sched.h:1126 [inline] task_fork_fair+0xb0/0x6d0 kernel/sched/fair.c:9768 sched_fork+0x443/0xba0 kernel/sched/core.c:2359 copy_process+0x2585/0x8770 kernel/fork.c:1886 _do_fork+0x1cb/0x11d0 kernel/fork.c:2213 kernel_thread+0x34/0x40 kernel/fork.c:2272 rest_init+0x28/0x372 init/main.c:408 arch_call_rest_init+0xe/0x1b start_kernel+0xa1f/0xa5a init/main.c:744 x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:472 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #1 (&p->pi_lock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 try_to_wake_up+0xd2/0x12e0 kernel/sched/core.c:1965 wake_up_process+0x10/0x20 kernel/sched/core.c:2129 __up.isra.1+0x1c0/0x2a0 kernel/locking/semaphore.c:262 up+0x13c/0x1c0 kernel/locking/semaphore.c:187 __up_console_sem+0xbe/0x1b0 kernel/printk/printk.c:237 console_unlock+0x811/0x1190 kernel/printk/printk.c:2433 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1923 vprintk_default+0x28/0x30 kernel/printk/printk.c:1965 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1998 check_stack_usage kernel/exit.c:755 [inline] do_exit.cold.18+0x57/0x16f kernel/exit.c:916 do_group_exit+0x177/0x440 kernel/exit.c:970 __do_sys_exit_group kernel/exit.c:981 [inline] __se_sys_exit_group kernel/exit.c:979 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:979 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 ((console_sem).lock){-.-.}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x1f0 kernel/printk/printk.c:220 console_trylock+0x15/0xa0 kernel/printk/printk.c:2248 console_trylock_spinning kernel/printk/printk.c:1654 [inline] vprintk_emit+0x372/0x990 kernel/printk/printk.c:1922 vprintk_default+0x28/0x30 kernel/printk/printk.c:1965 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1998 kasan_die_handler.cold.20+0x11/0x2f arch/x86/mm/kasan_init_64.c:251 notifier_call_chain+0x17e/0x380 kernel/notifier.c:93 __atomic_notifier_call_chain kernel/notifier.c:183 [inline] atomic_notifier_call_chain+0x96/0x190 kernel/notifier.c:193 notify_die+0x1bd/0x2d0 kernel/notifier.c:549 do_general_protection+0x16d/0x2f0 arch/x86/kernel/traps.c:557 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1135 __debug_check_no_obj_freed lib/debugobjects.c:778 [inline] debug_check_no_obj_freed+0x1bb/0x58d lib/debugobjects.c:818 free_pages_prepare mm/page_alloc.c:1035 [inline] free_pcp_prepare mm/page_alloc.c:1049 [inline] free_unref_page_prepare mm/page_alloc.c:2744 [inline] free_unref_page_list+0x3c4/0x11e0 mm/page_alloc.c:2813 shrink_page_list+0x6dc3/0xccd0 mm/vmscan.c:1501 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1963 shrink_list mm/vmscan.c:2275 [inline] shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2540 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2755 shrink_zones mm/vmscan.c:2987 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264 __perform_reclaim mm/page_alloc.c:3774 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3796 [inline] __alloc_pages_slowpath+0x9ed/0x2dc0 mm/page_alloc.c:4197 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945 __do_page_cache_readahead+0x383/0x980 mm/readahead.c:195 ra_submit mm/internal.h:66 [inline] do_sync_mmap_readahead mm/filemap.c:2459 [inline] filemap_fault+0xf4e/0x25f0 mm/filemap.c:2535 __do_fault+0x100/0x6b0 mm/memory.c:2991 do_read_fault mm/memory.c:3403 [inline] do_fault mm/memory.c:3529 [inline] handle_pte_fault mm/memory.c:3760 [inline] __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:180 copy_page_from_iter_iovec lib/iov_iter.c:290 [inline] copy_page_from_iter+0x3d5/0x8e0 lib/iov_iter.c:861 pipe_write+0x238/0xec0 fs/pipe.c:429 call_write_iter include/linux/fs.h:1808 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->lock --> &obj_hash[i].lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&obj_hash[i].lock); lock(&rq->lock); lock(&obj_hash[i].lock); lock((console_sem).lock); *** DEADLOCK *** 5 locks held by syz-executor0/7191: #0: 00000000845196d1 (&pipe->mutex/1){+.+.}, at: __pipe_lock fs/pipe.c:83 [inline] #0: 00000000845196d1 (&pipe->mutex/1){+.+.}, at: pipe_write+0xc0/0xec0 fs/pipe.c:366 #1: 000000008df14d85 (&mm->mmap_sem){++++}, at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] #1: 000000008df14d85 (&mm->mmap_sem){++++}, at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 #2: 000000004ae662d4 (fs_reclaim){+.+.}, at: fs_reclaim_acquire.part.100+0x0/0x30 mm/internal.h:79 #3: 00000000ca43533e (&obj_hash[i].lock){-.-.}, at: __debug_check_no_obj_freed lib/debugobjects.c:777 [inline] #3: 00000000ca43533e (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0x17a/0x58d lib/debugobjects.c:818 #4: 0000000021ea63ad (rcu_read_lock){....}, at: atomic_notifier_call_chain+0x0/0x190 kernel/notifier.c:329 stack backtrace: CPU: 1 PID: 7191 Comm: syz-executor0 Not tainted 4.19.0+ #84 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 print_circular_bug.isra.35.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2347 [inline] __lock_acquire+0x3399/0x4c20 kernel/locking/lockdep.c:3341 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x1f0 kernel/printk/printk.c:220 console_trylock+0x15/0xa0 kernel/printk/printk.c:2248 console_trylock_spinning kernel/printk/printk.c:1654 [inline] vprintk_emit+0x372/0x990 kernel/printk/printk.c:1922 vprintk_default+0x28/0x30 kernel/printk/printk.c:1965 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1998 kasan_die_handler.cold.20+0x11/0x2f arch/x86/mm/kasan_init_64.c:251 notifier_call_chain+0x17e/0x380 kernel/notifier.c:93 __atomic_notifier_call_chain kernel/notifier.c:183 [inline] atomic_notifier_call_chain+0x96/0x190 kernel/notifier.c:193 notify_die+0x1bd/0x2d0 kernel/notifier.c:549 do_general_protection+0x16d/0x2f0 arch/x86/kernel/traps.c:557 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1135 RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:778 [inline] RIP: 0010:debug_check_no_obj_freed+0x1bb/0x58d lib/debugobjects.c:818 Code: 48 8b b5 48 ff ff ff 48 c7 c0 60 fe f9 8a 4c 8b 2c 30 4d 85 ed 0f 84 87 02 00 00 31 f6 4d 89 e7 41 89 f4 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 91 02 00 00 49 8d 7d 18 41 83 c4 01 49 8b 5d RSP: 0018:ffff8801bca7b148 EFLAGS: 00010006 RAX: 0407040646640706 RBX: 2038203233203833 RCX: 0000000000000001 RDX: 3320382030363120 RSI: 0000000000000000 RDI: ffffffff890113b0 RBP: ffff8801bca7b238 R08: ffffed003794f616 R09: ffffed003794f615 R10: ffffed003794f615 R11: 0000000000000003 R12: 0000000000000004 R13: 2038203233203833 R14: dffffc0000000000 R15: ffffffff8b030c68 free_pages_prepare mm/page_alloc.c:1035 [inline] free_pcp_prepare mm/page_alloc.c:1049 [inline] free_unref_page_prepare mm/page_alloc.c:2744 [inline] free_unref_page_list+0x3c4/0x11e0 mm/page_alloc.c:2813 shrink_page_list+0x6dc3/0xccd0 mm/vmscan.c:1501 Lost 299 message(s)! ---[ end trace 1b68d1f4b97ce759 ]--- RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:778 [inline] RIP: 0010:debug_check_no_obj_freed+0x1bb/0x58d lib/debugobjects.c:818 Code: 48 8b b5 48 ff ff ff 48 c7 c0 60 fe f9 8a 4c 8b 2c 30 4d 85 ed 0f 84 87 02 00 00 31 f6 4d 89 e7 41 89 f4 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 91 02 00 00 49 8d 7d 18 41 83 c4 01 49 8b 5d RSP: 0018:ffff8801bca7b148 EFLAGS: 00010006 RAX: 0407040646640706 RBX: 2038203233203833 RCX: 0000000000000001 RDX: 3320382030363120 RSI: 0000000000000000 RDI: ffffffff890113b0 RBP: ffff8801bca7b238 R08: ffffed003794f616 R09: ffffed003794f615 R10: ffffed003794f615 R11: 0000000000000003 R12: 0000000000000004 R13: 2038203233203833 R14: dffffc0000000000 R15: ffffffff8b030c68 FS: 00007f48a7454700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000160d3f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400