INFO: task kworker/u4:0:7 blocked for more than 140 seconds. Not tainted 4.18.0-rc8+ #182 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:0 D15448 7 2 0x80000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3501 schedule+0xfb/0x450 kernel/sched/core.c:3545 schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x430/0x8d0 kernel/sched/completion.c:136 __synchronize_srcu+0x189/0x240 kernel/rcu/srcutree.c:928 synchronize_srcu+0x41c/0x56f kernel/rcu/srcutree.c:1006 fsnotify_mark_destroy_workfn+0x1be/0x550 fs/notify/mark.c:765 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x345/0x410 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 INFO: task jbd2/sda1-8:2169 blocked for more than 140 seconds. Not tainted 4.18.0-rc8+ #182 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sda1-8 D17368 2169 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3501 schedule+0xfb/0x450 kernel/sched/core.c:3545 io_schedule+0x1c/0x70 kernel/sched/core.c:5168 bit_wait_io+0x18/0x90 kernel/sched/wait_bit.c:207 __wait_on_bit+0xb3/0x130 kernel/sched/wait_bit.c:48 out_of_line_wait_on_bit+0x213/0x3c0 kernel/sched/wait_bit.c:63 wait_on_bit_io include/linux/wait_bit.h:101 [inline] __wait_on_buffer+0x76/0x90 fs/buffer.c:118 wait_on_buffer include/linux/buffer_head.h:354 [inline] journal_wait_on_commit_record fs/jbd2/commit.c:174 [inline] jbd2_journal_commit_transaction+0x657b/0x8c54 fs/jbd2/commit.c:865 kjournald2+0x274/0xb50 fs/jbd2/journal.c:229 kthread+0x345/0x410 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 INFO: task kworker/u4:4:6733 blocked for more than 140 seconds. Not tainted 4.18.0-rc8+ #182 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:4 D14040 6733 2 0x80000000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3501 schedule+0xfb/0x450 kernel/sched/core.c:3545 schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x430/0x8d0 kernel/sched/completion.c:136 __synchronize_srcu+0x189/0x240 kernel/rcu/srcutree.c:928 synchronize_srcu+0x41c/0x56f kernel/rcu/srcutree.c:1006 fsnotify_connector_destroy_workfn+0x44/0xa0 fs/notify/mark.c:156 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 process_scheduled_works kernel/workqueue.c:2212 [inline] worker_thread+0xaca/0x13c0 kernel/workqueue.c:2298 kthread+0x345/0x410 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 INFO: task syz-executor3:10549 blocked for more than 140 seconds. Not tainted 4.18.0-rc8+ #182 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D19824 10549 4432 0x00000004 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3501 schedule+0xfb/0x450 kernel/sched/core.c:3545 schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x430/0x8d0 kernel/sched/completion.c:136 flush_work+0x531/0x900 kernel/workqueue.c:2918 lru_add_drain_all+0x414/0x5c0 mm/swap.c:702 invalidate_bdev+0x9e/0xe0 fs/block_dev.c:97 btrfs_get_bdev_and_sb+0xdc/0x300 fs/btrfs/volumes.c:406 btrfs_open_one_device fs/btrfs/volumes.c:695 [inline] open_fs_devices+0x6ad/0xc80 fs/btrfs/volumes.c:1112 btrfs_open_devices+0xda/0xf0 fs/btrfs/volumes.c:1156 btrfs_mount_root+0x942/0x1e90 fs/btrfs/super.c:1568 mount_fs+0xae/0x328 fs/super.c:1277 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037 vfs_kern_mount+0x40/0x60 fs/namespace.c:1027 btrfs_mount+0x4a9/0x215e fs/btrfs/super.c:1661 mount_fs+0xae/0x328 fs/super.c:1277 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2518 [inline] do_mount+0x581/0x30e0 fs/namespace.c:2848 ksys_mount+0x12d/0x140 fs/namespace.c:3064 __do_sys_mount fs/namespace.c:3078 [inline] __se_sys_mount fs/namespace.c:3075 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459aba Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 f3 48 83 ec 27 48 83 e4 f0 48 89 44 24 10 48 89 5c 24 18 48 8d <3d> 01 4d ff 00 48 8d 9c 24 68 00 ff ff 48 89 5f 10 48 89 5f 18 48 RSP: 002b:00007fe24ecfba88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fe24ecfbb30 RCX: 0000000000459aba RDX: 00007fe24ecfbad0 RSI: 0000000020000100 RDI: 00007fe24ecfbaf0 RBP: 0000000020000100 R08: 00007fe24ecfbb30 R09: 00007fe24ecfbad0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 0000000000000000 R14: 00000000004c9a02 R15: 0000000000000000 INFO: task syz-executor4:10601 blocked for more than 140 seconds. Not tainted 4.18.0-rc8+ #182 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D19824 10601 4427 0x00000004 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3501 schedule+0xfb/0x450 kernel/sched/core.c:3545 schedule_preempt_disabled+0x10/0x20 kernel/sched/core.c:3603 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0xede/0x1820 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 btrfs_scan_one_device+0x442/0xb00 fs/btrfs/volumes.c:1248 btrfs_mount_root+0x3ae/0x1e90 fs/btrfs/super.c:1542 mount_fs+0xae/0x328 fs/super.c:1277 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037 vfs_kern_mount+0x40/0x60 fs/namespace.c:1027 btrfs_mount+0x4a9/0x215e fs/btrfs/super.c:1661 mount_fs+0xae/0x328 fs/super.c:1277 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2518 [inline] do_mount+0x581/0x30e0 fs/namespace.c:2848 ksys_mount+0x12d/0x140 fs/namespace.c:3064 __do_sys_mount fs/namespace.c:3078 [inline] __se_sys_mount fs/namespace.c:3075 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459aba Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 f3 48 83 ec 27 48 83 e4 f0 48 89 44 24 10 48 89 5c 24 18 48 8d <3d> 01 4d ff 00 48 8d 9c 24 68 00 ff ff 48 89 5f 10 48 89 5f 18 48 RSP: 002b:00007f0a8f9aea88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f0a8f9aeb30 RCX: 0000000000459aba RDX: 00007f0a8f9aead0 RSI: 0000000020000100 RDI: 00007f0a8f9aeaf0 RBP: 0000000020000100 R08: 00007f0a8f9aeb30 R09: 00007f0a8f9aead0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 0000000000000000 R14: 00000000004c9a02 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by kworker/u4:0/7: #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 000000005e67dcac ((reaper_work).work){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 2 locks held by kworker/1:0/19: #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 00000000a60a0f64 ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 1 lock held by khungtaskd/773: #0: 00000000ebc72d1f (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x428 kernel/locking/lockdep.c:4461 2 locks held by kworker/0:3/2002: #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 00000000810b534f ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 1 lock held by rsyslogd/4290: 2 locks held by getty/4380: #0: 000000008ae8d13b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000edf80c9a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4381: #0: 00000000c641a7ce (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000008dd16218 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4382: #0: 00000000a7ac34f8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000019451800 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4383: #0: 000000006d07e021 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000033d63207 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4384: #0: 0000000009d22666 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000092eacf50 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4385: #0: 00000000c67f588b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000026a52a73 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4386: #0: 0000000025cdc197 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000b4dc0b8b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by kworker/0:4/4930: #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 000000002337f950 ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 2 locks held by kworker/1:3/5003: #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000b02f1490 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 000000002ef026b1 ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 2 locks held by kworker/u4:4/6733: #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000faf3100d ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0xb44/0x1ba0 kernel/workqueue.c:2124 #1: 0000000097e43400 (connector_reaper_work){+.+.}, at: process_one_work+0xb9b/0x1ba0 kernel/workqueue.c:2128 1 lock held by syz-executor5/10543: 3 locks held by syz-executor3/10549: #0: 0000000019ac9f03 (uuid_mutex){+.+.}, at: btrfs_open_devices+0x2d/0xf0 fs/btrfs/volumes.c:1149 #1: 00000000e39d57d9 (&fs_devs->device_list_mutex){+.+.}, at: btrfs_open_devices+0x37/0xf0 fs/btrfs/volumes.c:1150 #2: 000000009e33d4f7 (lock#6){+.+.}, at: lru_add_drain_all+0xac/0x5c0 mm/swap.c:684 1 lock held by syz-executor4/10601: #0: 0000000019ac9f03 (uuid_mutex){+.+.}, at: btrfs_scan_one_device+0x442/0xb00 fs/btrfs/volumes.c:1248 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 773 Comm: khungtaskd Not tainted 4.18.0-rc8+ #182 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+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x9c4/0xf80 kernel/hung_task.c:252 kthread+0x345/0x410 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10543 Comm: syz-executor5 Not tainted 4.18.0-rc8+ #182 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vmx_vcpu_run+0x1244/0x2600 arch/x86/kvm/vmx.c:10047 Code: 60 03 00 00 4c 8b a9 68 03 00 00 4c 8b b1 70 03 00 00 4c 8b b9 78 03 00 00 48 8b 89 08 03 00 00 75 05 0f 01 c2 eb 03 0f 01 c3 <48> 89 4c 24 08 59 0f 96 81 88 56 00 00 48 89 81 00 03 00 00 48 89 RSP: 0018:ffff88018e937350 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f508c117700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001d5298000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: