nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task kworker/1:0:19 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D25264 19 2 0x80000000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 hub_port_init+0x12dc/0x3120 drivers/usb/core/hub.c:4704 hub_port_connect drivers/usb/core/hub.c:5070 [inline] hub_port_connect_change drivers/usb/core/hub.c:5253 [inline] port_event drivers/usb/core/hub.c:5361 [inline] hub_event+0x1ccd/0x44a0 drivers/usb/core/hub.c:5441 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task syz-executor.0:15757 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28648 15757 8112 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 device_lock include/linux/device.h:1174 [inline] usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa9fd39737b Code: Bad RIP value. RSP: 002b:00007ffe35d94de0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fa9fd39737b RDX: 0000000000000000 RSI: 00007fa9fd0a26a0 RDI: 0000000000000003 RBP: 00007fa9fd507980 R08: 0000000000000000 R09: 00000000ee5a3a10 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000016491b R13: 00007ffe35d94ee0 R14: 00007fa9fd506120 R15: 0000000000000032 INFO: task syz-executor.3:15796 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28744 15796 8118 0x80000002 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 device_lock include/linux/device.h:1174 [inline] usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7a8752a5a9 Code: Bad RIP value. RSP: 002b:00007f7a85df8218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f7a8764b398 RCX: 00007f7a8752a5a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7a8764b398 RBP: 00007f7a8764b390 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7a8764b39c R13: 00007ffed556568f R14: 00007f7a85df8300 R15: 0000000000022000 INFO: task syz-executor.4:15789 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28648 15789 2686 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 device_lock include/linux/device.h:1174 [inline] usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd8c1ccc37b Code: Bad RIP value. RSP: 002b:00007ffd27c749b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fd8c1ccc37b RDX: 0000001b33920000 RSI: 0000001b33925b10 RDI: 0000000000000004 RBP: 00007fd8c1e3c980 R08: 0000000000000000 R09: 000000003253460c R10: 00149e2736c49bbc R11: 0000000000000293 R12: 00000000001649d2 R13: 00007ffd27c74ab0 R14: 00007fd8c1e3af80 R15: 0000000000000032 INFO: task syz-executor.4:15820 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29504 15820 2686 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 device_lock include/linux/device.h:1174 [inline] usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd8c1ccc654 Code: Bad RIP value. RSP: 002b:00007fd8c066bca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007fd8c1ccc654 RDX: 0000000000000001 RSI: 00007fd8c066bd40 RDI: 00000000ffffff9c RBP: 00007fd8c066bd40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffd27c7494f R14: 00007fd8c066c300 R15: 0000000000022000 INFO: task syz-executor.1:15802 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27280 15802 8120 0x80000002 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 device_lock include/linux/device.h:1174 [inline] usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7efc5a9955a9 Code: Bad RIP value. RSP: 002b:00007efc59308168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffff0 RBX: 00007efc5aab5f80 RCX: 00007efc5a9955a9 RDX: 0000000020000040 RSI: 0000000080045505 RDI: 0000000000000004 RBP: 00007efc5a9f0580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde4112a7f R14: 00007efc59308300 R15: 0000000000022000 Showing all locks held in the system: 5 locks held by kworker/1:0/19: #0: 00000000f308f5ab ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000001c1bcaa ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #2: 00000000b8deb14c (&dev->mutex){....}, at: hub_event+0x11e/0x44a0 drivers/usb/core/hub.c:5387 #3: 0000000025049ecd (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2983 [inline] #3: 0000000025049ecd (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5069 [inline] #3: 0000000025049ecd (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5253 [inline] #3: 0000000025049ecd (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5361 [inline] #3: 0000000025049ecd (&port_dev->status_lock){+.+.}, at: hub_event+0x1cb8/0x44a0 drivers/usb/core/hub.c:5441 #4: 00000000cd89bce3 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x3120 drivers/usb/core/hub.c:4578 1 lock held by khungtaskd/1570: #0: 000000006bddc996 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7810: 1 lock held by syz-executor.0/15757: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 1 lock held by syz-executor.3/15796: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 1 lock held by syz-executor.4/15789: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 1 lock held by syz-executor.4/15820: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.1/15802: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_release+0x83/0x420 drivers/usb/core/devio.c:1049 1 lock held by syz-executor.5/15908: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.5/15913: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.5/15916: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.3/16982: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.3/17003: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/17026: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/17027: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/17035: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/17040: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.1/17031: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/17036: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/17041: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/17047: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/18028: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/18041: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.0/18050: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.3/18379: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.3/18380: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.1/18403: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.5/18438: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.5/18444: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.5/18446: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/18441: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/18445: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 1 lock held by syz-executor.4/18448: #0: 00000000b8deb14c (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline] #0: 00000000b8deb14c (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:mark_irqflags kernel/locking/lockdep.c:2997 [inline] RIP: 0010:__lock_acquire+0x577/0x3ff0 kernel/locking/lockdep.c:3373 Code: ff df 48 89 ea 48 c1 ea 03 0f b6 04 02 48 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 a0 09 00 00 84 db 41 0f b6 42 22 78 2b a8 03 <41> 8b 95 54 08 00 00 0f 84 0a 08 00 00 85 d2 0f 85 07 0b 00 00 41 RSP: 0000:ffff8880b5a67980 EFLAGS: 00000046 RAX: 000000000000000c RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffff8880b5a4eb08 RDI: ffff8880b5a4eb29 RBP: ffff8880b5a4eb2a R08: 0000000000000002 R09: 0000000000000000 R10: ffff8880b5a4eb08 R11: 0000000000000000 R12: 00000000000c0002 R13: ffff8880b5a4e280 R14: ffff8880b5a4eb20 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb8f6937000 CR3: 00000000a0ec2000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 __free_object+0x17/0x1e0 lib/debugobjects.c:251 free_object lib/debugobjects.c:272 [inline] debug_object_free lib/debugobjects.c:652 [inline] debug_object_free+0x1cc/0x380 lib/debugobjects.c:624 destroy_timer_on_stack kernel/time/timer.c:753 [inline] schedule_timeout+0x4e6/0xfe0 kernel/time/timer.c:1822 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415