====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc7+ #285 Not tainted ------------------------------------------------------ kworker/1:4/11968 is trying to acquire lock: 00000000777b80f4 (epmutex){+.+.}, at: ep_free+0xf6/0x300 fs/eventpoll.c:829 kobject: 'loop1' (00000000e388b298): kobject_uevent_env but task is already holding lock: 0000000038939b56 ((delayed_fput_work).work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' -> #4 ((delayed_fput_work).work){+.+.}: process_one_work+0xc0a/0x1c40 kernel/workqueue.c:2129 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 -> #3 ((wq_completion)"events"){+.+.}: flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655 flush_scheduled_work include/linux/workqueue.h:599 [inline] vim2m_stop_streaming+0x7c/0x2c0 drivers/media/platform/vim2m.c:811 __vb2_queue_cancel+0x14f/0xd50 drivers/media/common/videobuf2/videobuf2-core.c:1843 kobject: 'loop5' (0000000083599a82): kobject_uevent_env vb2_core_queue_release+0x26/0x80 drivers/media/common/videobuf2/videobuf2-core.c:2255 vb2_queue_release+0x15/0x20 drivers/media/common/videobuf2/videobuf2-v4l2.c:842 v4l2_m2m_ctx_release+0x2a/0x35 drivers/media/v4l2-core/v4l2-mem2mem.c:931 vim2m_release+0xe6/0x150 drivers/media/platform/vim2m.c:977 v4l2_release+0x224/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:456 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:341 [inline] do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 -> #2 (&dev->dev_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 v4l2_m2m_fop_poll+0x98/0x120 drivers/media/v4l2-core/v4l2-mem2mem.c:1105 v4l2_poll+0x153/0x200 drivers/media/v4l2-core/v4l2-dev.c:350 vfs_poll include/linux/poll.h:86 [inline] ep_item_poll.isra.15+0x15c/0x400 fs/eventpoll.c:892 ep_insert+0x77e/0x1d40 fs/eventpoll.c:1464 __do_sys_epoll_ctl fs/eventpoll.c:2121 [inline] __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] __ia32_sys_epoll_ctl+0xeda/0x1080 fs/eventpoll.c:2007 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Enabling of bearer rejected, failed to enable media -> #1 (&ep->mtx){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 ep_free+0x160/0x300 fs/eventpoll.c:849 ep_eventpoll_release+0x44/0x60 fs/eventpoll.c:869 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (epmutex){+.+.}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 ep_free+0xf6/0x300 fs/eventpoll.c:829 ep_eventpoll_release+0x44/0x60 fs/eventpoll.c:869 __fput+0x385/0xa30 fs/file_table.c:278 delayed_fput+0x55/0x80 fs/file_table.c:304 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 other info that might help us debug this: Chain exists of: epmutex --> (wq_completion)"events" --> (delayed_fput_work).work kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((delayed_fput_work).work); lock((wq_completion)"events"); lock((delayed_fput_work).work); lock(epmutex); *** DEADLOCK *** 2 locks held by kworker/1:4/11968: #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:218 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000003a571965 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124 kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' #1: 0000000038939b56 ((delayed_fput_work).work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128 stack backtrace: CPU: 1 PID: 11968 Comm: kworker/1:4 Not tainted 4.20.0-rc7+ #285 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events delayed_fput Enabling of bearer rejected, failed to enable media Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113 print_circular_bug.isra.33.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+0x3360/0x4c20 kernel/locking/lockdep.c:3341 kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 Enabling of bearer rejected, failed to enable media kobject: 'loop0' (000000002a48426d): kobject_uevent_env mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' ep_free+0xf6/0x300 fs/eventpoll.c:829 ep_eventpoll_release+0x44/0x60 fs/eventpoll.c:869 __fput+0x385/0xa30 fs/file_table.c:278 delayed_fput+0x55/0x80 fs/file_table.c:304 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' (unnamed net_device) (uninitialized): option primary: mode dependency failed, not supported in mode balance-rr(0) kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env (unnamed net_device) (uninitialized): option primary: mode dependency failed, not supported in mode balance-rr(0) kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env (unnamed net_device) (uninitialized): option primary: mode dependency failed, not supported in mode balance-rr(0) kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000083599a82): kobject_uevent_env (unnamed net_device) (uninitialized): option primary: mode dependency failed, not supported in mode balance-rr(0) kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env xt_helper: cannot load conntrack support for proto=7 kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' xt_helper: cannot load conntrack support for proto=7 kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env xt_helper: cannot load conntrack support for proto=7 kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' xt_helper: cannot load conntrack support for proto=7 kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' xt_helper: cannot load conntrack support for proto=7 kobject: 'loop5' (0000000083599a82): kobject_uevent_env kobject: 'loop5' (0000000083599a82): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' xt_helper: cannot load conntrack support for proto=7 kobject: 'loop0' (000000002a48426d): kobject_uevent_env xt_helper: cannot load conntrack support for proto=7 kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000a185b07e): kobject_uevent_env kobject: 'loop4' (00000000a185b07e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000002a48426d): kobject_uevent_env kobject: 'loop0' (000000002a48426d): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000066dfaf71): kobject_uevent_env kobject: 'loop2' (0000000066dfaf71): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' xt_helper: cannot load conntrack support for proto=7 kobject: 'loop3' (000000000f93afa5): kobject_uevent_env kobject: 'loop3' (000000000f93afa5): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000e388b298): kobject_uevent_env kobject: 'loop1' (00000000e388b298): fill_kobj_path: path = '/devices/virtual/block/loop1'