====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc5+ #142 Not tainted ------------------------------------------------------ syz-executor0/28429 is trying to acquire lock: 00000000d59abe08 (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x98/0x120 drivers/media/v4l2-core/v4l2-mem2mem.c:1105 but task is already holding lock: 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2085 [inline] 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __x64_sys_epoll_ctl+0x7d4/0x1080 fs/eventpoll.c:2007 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&ep->mtx){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 get_epoll_tfile_raw_ptr+0x96/0x1c0 fs/eventpoll.c:1103 kcmp_epoll_target+0x356/0x580 kernel/kcmp.c:133 __do_sys_kcmp kernel/kcmp.c:224 [inline] __se_sys_kcmp kernel/kcmp.c:152 [inline] __x64_sys_kcmp+0x813/0xa90 kernel/kcmp.c:152 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #5 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 lock_trace+0x4c/0xe0 fs/proc/base.c:384 proc_pid_syscall+0xad/0x520 fs/proc/base.c:617 proc_single_show+0x101/0x190 fs/proc/base.c:737 seq_read+0x4af/0x1150 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4a3/0x650 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x539/0xb20 fs/splice.c:417 do_splice_to+0x12e/0x190 fs/splice.c:880 splice_direct_to_actor+0x270/0x8f0 fs/splice.c:952 do_splice_direct+0x2d4/0x420 fs/splice.c:1061 do_sendfile+0x62a/0xe20 fs/read_write.c:1439 __do_sys_sendfile64 fs/read_write.c:1500 [inline] __se_sys_sendfile64 fs/read_write.c:1486 [inline] __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #4 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 seq_read+0x71/0x1150 fs/seq_file.c:161 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4a3/0x650 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x539/0xb20 fs/splice.c:417 do_splice_to+0x12e/0x190 fs/splice.c:880 splice_direct_to_actor+0x270/0x8f0 fs/splice.c:952 do_splice_direct+0x2d4/0x420 fs/splice.c:1061 do_sendfile+0x62a/0xe20 fs/read_write.c:1439 __do_sys_sendfile64 fs/read_write.c:1500 [inline] __se_sys_sendfile64 fs/read_write.c:1486 [inline] __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #3 (sb_writers#6){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x214/0x370 fs/super.c:1387 file_start_write include/linux/fs.h:2810 [inline] vfs_write+0x42a/0x560 fs/read_write.c:548 kernel_write+0xab/0x120 fs/read_write.c:526 p9_fd_write net/9p/trans_fd.c:439 [inline] p9_write_work+0x72b/0xdf0 net/9p/trans_fd.c:490 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 -> #2 ((work_completion)(&m->wq)){+.+.}: 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 -> #1 ((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+0x171/0xd20 drivers/media/common/videobuf2/videobuf2-core.c:1823 vb2_core_queue_release+0x26/0x80 drivers/media/common/videobuf2/videobuf2-core.c:2229 vb2_queue_release+0x15/0x20 drivers/media/common/videobuf2/videobuf2-v4l2.c:837 v4l2_m2m_ctx_release+0x1e/0x35 drivers/media/v4l2-core/v4l2-mem2mem.c:930 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 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 (&dev->dev_mutex){+.+.}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 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+0x781/0x1dd0 fs/eventpoll.c:1464 __do_sys_epoll_ctl fs/eventpoll.c:2121 [inline] __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] __x64_sys_epoll_ctl+0xeda/0x1080 fs/eventpoll.c:2007 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: &dev->dev_mutex --> &sig->cred_guard_mutex --> &ep->mtx Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ep->mtx); lock(&sig->cred_guard_mutex); lock(&ep->mtx); lock(&dev->dev_mutex); *** DEADLOCK *** 1 lock held by syz-executor0/28429: #0: 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2085 [inline] #0: 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] #0: 00000000f2cdaf57 (&ep->mtx){+.+.}, at: __x64_sys_epoll_ctl+0x7d4/0x1080 fs/eventpoll.c:2007 stack backtrace: CPU: 1 PID: 28429 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #142 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 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 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+0x781/0x1dd0 fs/eventpoll.c:1464 __do_sys_epoll_ctl fs/eventpoll.c:2121 [inline] __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] __x64_sys_epoll_ctl+0xeda/0x1080 fs/eventpoll.c:2007 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:00007fa077fd9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 00007fa077fda6d4 R13: 00000000004bdc2c R14: 00000000004ccf78 R15: 00000000ffffffff kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'rx-0' (0000000028cda0dd): kobject_cleanup, parent 0000000047373e52 kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (0000000028cda0dd): auto cleanup 'remove' event kobject: 'rx-0' (0000000028cda0dd): kobject_uevent_env kobject: 'rx-0' (0000000028cda0dd): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (0000000028cda0dd): auto cleanup kobject_del kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'rx-0' (0000000028cda0dd): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000e1b84d89): kobject_cleanup, parent 0000000047373e52 kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000e1b84d89): auto cleanup 'remove' event kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'tx-0' (00000000e1b84d89): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000e1b84d89): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000e1b84d89): auto cleanup kobject_del kobject: 'tx-0' (00000000e1b84d89): calling ktype release kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0': free name kobject: 'queues' (0000000047373e52): kobject_cleanup, parent (null) kobject: 'queues' (0000000047373e52): calling ktype release kobject: 'queues' (0000000047373e52): kset_release kobject: 'queues': free name kobject: 'erspan0' (000000003a965506): kobject_uevent_env kobject: 'erspan0' (000000003a965506): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'ppp0' (00000000f9de0ebd): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'ppp0' (00000000f9de0ebd): kobject_uevent_env kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'ppp0' (00000000f9de0ebd): fill_kobj_path: path = '/devices/virtual/net/ppp0' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'queues' (0000000062c4d851): kobject_add_internal: parent: 'ppp0', set: '' kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (0000000062c4d851): kobject_uevent_env kobject: 'queues' (0000000062c4d851): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000758a0514): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000758a0514): kobject_uevent_env kobject: 'rx-0' (00000000758a0514): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0' kobject: 'tx-0' (000000002d29845b): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (000000002d29845b): kobject_uevent_env kobject: 'tx-0' (000000002d29845b): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'erspan0' (000000003a965506): kobject_cleanup, parent (null) kobject: 'erspan0' (000000003a965506): auto cleanup 'remove' event kobject: 'rx-0' (00000000758a0514): kobject_cleanup, parent 0000000062c4d851 kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'erspan0' (000000003a965506): kobject_uevent_env kobject: 'erspan0' (000000003a965506): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (00000000758a0514): auto cleanup 'remove' event kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'erspan0' (000000003a965506): calling ktype release kobject: 'rx-0' (00000000758a0514): kobject_uevent_env kobject: 'rx-0' (00000000758a0514): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0' kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (00000000758a0514): auto cleanup kobject_del kobject: 'rx-0' (00000000758a0514): calling ktype release kobject: 'rx-0': free name kobject: 'erspan0': free name kobject: 'tx-0' (000000002d29845b): kobject_cleanup, parent 0000000062c4d851 kobject: 'tx-0' (000000002d29845b): auto cleanup 'remove' event kobject: 'tx-0' (000000002d29845b): kobject_uevent_env kobject: 'tx-0' (000000002d29845b): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'tx-0' (000000002d29845b): auto cleanup kobject_del kobject: 'tx-0' (000000002d29845b): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (0000000062c4d851): kobject_cleanup, parent (null) kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (0000000062c4d851): calling ktype release kobject: 'queues' (0000000062c4d851): kset_release kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'queues': free name kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'ppp0' (00000000f9de0ebd): kobject_uevent_env kobject: 'ppp0' (00000000f9de0ebd): fill_kobj_path: path = '/devices/virtual/net/ppp0' kobject: 'rx-0' (00000000d6218135): kobject_cleanup, parent 00000000c2a4c002 kobject: 'rx-0' (00000000d6218135): auto cleanup 'remove' event kobject: 'rx-0' (00000000d6218135): kobject_uevent_env kobject: 'rx-0' (00000000d6218135): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000d6218135): auto cleanup kobject_del kobject: 'rx-0' (00000000d6218135): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000fe22dbc4): kobject_cleanup, parent 00000000c2a4c002 kobject: 'tx-0' (00000000fe22dbc4): auto cleanup 'remove' event kobject: 'tx-0' (00000000fe22dbc4): kobject_uevent_env kobject: 'tx-0' (00000000fe22dbc4): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000fe22dbc4): auto cleanup kobject_del kobject: 'tx-0' (00000000fe22dbc4): calling ktype release kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'tx-0': free name kobject: 'queues' (00000000c2a4c002): kobject_cleanup, parent (null) kobject: 'queues' (00000000c2a4c002): calling ktype release kobject: 'queues' (00000000c2a4c002): kset_release kobject: 'queues': free name kobject: 'gretap0' (000000003aa12a17): kobject_uevent_env kobject: 'gretap0' (000000003aa12a17): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'ppp0' (00000000f9de0ebd): kobject_cleanup, parent (null) kobject: 'ppp0' (00000000f9de0ebd): calling ktype release kobject: 'ppp0': free name kobject: 'gretap0' (000000003aa12a17): kobject_cleanup, parent (null) kobject: 'gretap0' (000000003aa12a17): auto cleanup 'remove' event kobject: 'gretap0' (000000003aa12a17): kobject_uevent_env kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'gretap0' (000000003aa12a17): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'gretap0' (000000003aa12a17): calling ktype release kobject: 'gretap0': free name kobject: 'rx-0' (00000000b8d7fe93): kobject_cleanup, parent 00000000cff61912 kobject: 'rx-0' (00000000b8d7fe93): auto cleanup 'remove' event kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (00000000b8d7fe93): kobject_uevent_env kobject: 'rx-0' (00000000b8d7fe93): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'rx-0' (00000000b8d7fe93): auto cleanup kobject_del kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (00000000b8d7fe93): calling ktype release kobject: 'rx-0': free name kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (0000000079a092e5): kobject_cleanup, parent 00000000cff61912 kobject: 'tx-0' (0000000079a092e5): auto cleanup 'remove' event kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'tx-0' (0000000079a092e5): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (0000000079a092e5): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'tx-0' (0000000079a092e5): auto cleanup kobject_del kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (0000000079a092e5): calling ktype release kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0': free name kobject: 'queues' (00000000cff61912): kobject_cleanup, parent (null) kobject: 'queues' (00000000cff61912): calling ktype release kobject: 'queues' (00000000cff61912): kset_release kobject: 'queues': free name kobject: 'gre0' (00000000fe991eed): kobject_uevent_env kobject: 'gre0' (00000000fe991eed): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'gre0' (00000000fe991eed): kobject_cleanup, parent (null) kobject: 'gre0' (00000000fe991eed): auto cleanup 'remove' event kobject: 'gre0' (00000000fe991eed): kobject_uevent_env kobject: 'gre0' (00000000fe991eed): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'gre0' (00000000fe991eed): calling ktype release kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'gre0': free name kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'rx-0' (000000007b958ec7): kobject_cleanup, parent 00000000da9faf7c kobject: 'rx-0' (000000007b958ec7): auto cleanup 'remove' event kobject: 'rx-0' (000000007b958ec7): kobject_uevent_env kobject: 'rx-0' (000000007b958ec7): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (000000007b958ec7): auto cleanup kobject_del kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'rx-0' (000000007b958ec7): calling ktype release kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0': free name kobject: 'tx-0' (00000000720b17e7): kobject_cleanup, parent 00000000da9faf7c kobject: 'tx-0' (00000000720b17e7): auto cleanup 'remove' event kobject: 'tx-0' (00000000720b17e7): kobject_uevent_env kobject: 'tx-0' (00000000720b17e7): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000720b17e7): auto cleanup kobject_del kobject: 'tx-0' (00000000720b17e7): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000da9faf7c): kobject_cleanup, parent (null) kobject: 'queues' (00000000da9faf7c): calling ktype release kobject: 'queues' (00000000da9faf7c): kset_release kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'queues': free name kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tunl0' (00000000abddfa63): kobject_uevent_env kobject: 'tunl0' (00000000abddfa63): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tunl0' (00000000abddfa63): kobject_cleanup, parent (null) kobject: 'tunl0' (00000000abddfa63): auto cleanup 'remove' event kobject: 'tunl0' (00000000abddfa63): kobject_uevent_env kobject: 'tunl0' (00000000abddfa63): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tunl0' (00000000abddfa63): calling ktype release kobject: 'tunl0': free name kobject: 'rx-0' (00000000438c533c): kobject_cleanup, parent 0000000012124a6c kobject: 'rx-0' (00000000438c533c): auto cleanup 'remove' event kobject: 'rx-0' (00000000438c533c): kobject_uevent_env kobject: 'rx-0' (00000000438c533c): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000438c533c): auto cleanup kobject_del kobject: 'rx-0' (00000000438c533c): calling ktype release kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'rx-0': free name kobject: 'tx-0' (0000000003cf08b5): kobject_cleanup, parent 0000000012124a6c kobject: 'tx-0' (0000000003cf08b5): auto cleanup 'remove' event kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'tx-0' (0000000003cf08b5): kobject_uevent_env kobject: 'tx-0' (0000000003cf08b5): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (0000000003cf08b5): auto cleanup kobject_del kobject: 'tx-0' (0000000003cf08b5): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (0000000012124a6c): kobject_cleanup, parent (null) kobject: 'queues' (0000000012124a6c): calling ktype release kobject: 'queues' (0000000012124a6c): kset_release kobject: 'queues': free name kobject: 'lo' (0000000063f56d3d): kobject_uevent_env kobject: 'lo' (0000000063f56d3d): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'lo' (0000000063f56d3d): kobject_cleanup, parent (null) kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'lo' (0000000063f56d3d): auto cleanup 'remove' event kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'lo' (0000000063f56d3d): kobject_uevent_env kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'lo' (0000000063f56d3d): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'lo' (0000000063f56d3d): calling ktype release kobject: 'lo': free name kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' device bridge0 left promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'loop1' (00000000720c8972): kobject_uevent_env device team0 left promiscuous mode device team_slave_0 left promiscuous mode kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' device team_slave_1 left promiscuous mode kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' [drm:drm_calc_timestamping_constants] *ERROR* crtc 29: Can't calculate constants, dotclock = 0! IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (000000005b0803e7): kobject_uevent_env kobject: 'loop2' (000000005b0803e7): fill_kobj_path: path = '/devices/virtual/block/loop2' IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000720c8972): kobject_uevent_env kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000001c313088): kobject_uevent_env kobject: 'loop5' (000000001c313088): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000720c8972): kobject_uevent_env IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'loop1' (00000000720c8972): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000acfa5bb9): kobject_uevent_env kobject: 'loop3' (00000000acfa5bb9): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000009bad0829): kobject_uevent_env kobject: 'loop4' (000000009bad0829): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000012c4dbf5): kobject_uevent_env kobject: 'loop0' (0000000012c4dbf5): fill_kobj_path: path = '/devices/virtual/block/loop0'