====================================================== WARNING: possible circular locking dependency detected kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env 4.20.0-rc7+ #381 Not tainted ------------------------------------------------------ kworker/0:6/19037 is trying to acquire lock: 000000001be3b2b8 (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:455 kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' but task is already holding lock: 00000000848df65e ((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: -> #3 ((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 -> #2 ((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 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+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 -> #1 (&dev->dev_mutex){+.+.}: __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 vim2m_release+0xbc/0x150 drivers/media/platform/vim2m.c:976 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 (&mdev->req_queue_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_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:455 __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: &mdev->req_queue_mutex --> (wq_completion)"events" --> (delayed_fput_work).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((delayed_fput_work).work); lock((wq_completion)"events"); lock((delayed_fput_work).work); lock(&mdev->req_queue_mutex); *** DEADLOCK *** 2 locks held by kworker/0:6/19037: #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:209 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 0000000002640609 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124 #1: 00000000848df65e ((delayed_fput_work).work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128 stack backtrace: CPU: 0 PID: 19037 Comm: kworker/0:6 Not tainted 4.20.0-rc7+ #381 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events delayed_fput 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_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:455 __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 kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000cc265642): kobject_uevent_env IPv6: ADDRCONF(NETDEV_UP): : link is not ready kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' A link change request failed with some changes committed already. Interface wlan0 may have been left with an inconsistent configuration, please check. kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' IPv6: ADDRCONF(NETDEV_CHANGE): : link becomes ready kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' A link change request failed with some changes committed already. Interface wlan0 may have been left with an inconsistent configuration, please check. kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready A link change request failed with some changes committed already. Interface wlan0 may have been left with an inconsistent configuration, please check. kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env A link change request failed with some changes committed already. Interface wlan0 may have been left with an inconsistent configuration, please check. kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' binder: 27224:27228 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop4' (00000000462247d8): kobject_uevent_env binder_alloc: binder_alloc_mmap_handler: 27224 20001000-20004000 already mapped failed -16 kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: BINDER_SET_CONTEXT_MGR already set kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env binder: 27224:27228 ioctl 40046207 0 returned -16 kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env binder_alloc: 27224: binder_alloc_buf, no vma kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' binder: 27224:27236 transaction failed 29189/-3, size 0-0 line 2973 kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' binder: 27254:27255 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop0' (000000003059ba90): kobject_uevent_env binder: BINDER_SET_CONTEXT_MGR already set binder: 27262:27263 ioctl 40046207 0 returned -16 binder: 27262:27263 transaction failed 29189/-22, size 0-0 line 2834 kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: undelivered TRANSACTION_ERROR: 29189 kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env binder: 27265:27266 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env binder: BINDER_SET_CONTEXT_MGR already set kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 27270:27271 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env binder: 27274:27276 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 binder: 27270:27275 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: BINDER_SET_CONTEXT_MGR already set binder: 27279:27280 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: 27279:27281 transaction failed 29189/-22, size 0-0 line 2834 kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29189 kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kauditd_printk_skb: 763 callbacks suppressed audit: type=1326 audit(1545358988.077:2569): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=228 compat=0 ip=0x45a4ca code=0x50000 audit: type=1326 audit(1545358988.117:2570): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.117:2571): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.117:2572): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=228 compat=0 ip=0x45a4ca code=0x50000 audit: type=1326 audit(1545358988.127:2573): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=298 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.137:2574): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=228 compat=0 ip=0x45a4ca code=0x50000 audit: type=1326 audit(1545358988.137:2575): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.137:2576): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.137:2577): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 audit: type=1326 audit(1545358988.147:2578): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=27252 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x457669 code=0x50000 kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'kvm' (00000000cc265642): kobject_uevent_env binder: 27322:27323 transaction failed 29201/-22, size 0-0 line 2973 binder: BINDER_SET_CONTEXT_MGR already set kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: BINDER_SET_CONTEXT_MGR already set kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' binder: 27328:27329 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env binder: 27324:27325 ioctl 40046207 0 returned -16 binder: 27324:27335 transaction failed 29201/-22, size 0-0 line 2973 kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000cc265642): kobject_uevent_env kobject: 'kvm' (00000000cc265642): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'ip6gre0.0' (0000000046227c20): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'ip6gre0.0' (0000000046227c20): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'ip6gre0.0' (0000000046227c20): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0' kobject: 'queues' (00000000056d7022): kobject_add_internal: parent: 'ip6gre0.0', set: '' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' print_req_error: 64 callbacks suppressed print_req_error: I/O error, dev loop0, sector 0 buffer_io_error: 60 callbacks suppressed Buffer I/O error on dev loop0, logical block 0, lost async page write print_req_error: I/O error, dev loop0, sector 4 Buffer I/O error on dev loop0, logical block 1, lost async page write kobject: 'queues' (00000000056d7022): kobject_uevent_env print_req_error: I/O error, dev loop0, sector 8 Buffer I/O error on dev loop0, logical block 2, lost async page write print_req_error: I/O error, dev loop0, sector 12 Buffer I/O error on dev loop0, logical block 3, lost async page write print_req_error: I/O error, dev loop0, sector 16 Buffer I/O error on dev loop0, logical block 4, lost async page write print_req_error: I/O error, dev loop0, sector 20 Buffer I/O error on dev loop0, logical block 5, lost async page write print_req_error: I/O error, dev loop0, sector 24 Buffer I/O error on dev loop0, logical block 6, lost async page write kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env print_req_error: I/O error, dev loop0, sector 28 kobject: 'queues' (00000000056d7022): kobject_uevent_env: filter function caused the event to drop! Buffer I/O error on dev loop0, logical block 7, lost async page write kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' print_req_error: I/O error, dev loop0, sector 32 kobject: 'rx-0' (000000001674a704): kobject_add_internal: parent: 'queues', set: 'queues' Buffer I/O error on dev loop0, logical block 8, lost async page write print_req_error: I/O error, dev loop0, sector 36 kobject: 'loop1' (00000000d8064e45): kobject_uevent_env Buffer I/O error on dev loop0, logical block 9, lost async page write kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (000000001674a704): kobject_uevent_env kobject: 'rx-0' (000000001674a704): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0/queues/rx-0' kobject: 'tx-0' (000000004e28b5e3): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000004e28b5e3): kobject_uevent_env kobject: 'tx-0' (000000004e28b5e3): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0/queues/tx-0' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (00000000462247d8): kobject_uevent_env kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop4' (00000000462247d8): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000c784ac0b): kobject_uevent_env kobject: 'loop3' (00000000c784ac0b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'ip6gre0.0' (00000000258841c2): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'ip6gre0.0' (00000000258841c2): kobject_uevent_env kobject: 'ip6gre0.0' (00000000258841c2): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0' kobject: 'loop2' (00000000b617b1a5): kobject_uevent_env kobject: 'loop2' (00000000b617b1a5): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'queues' (0000000082188081): kobject_add_internal: parent: 'ip6gre0.0', set: '' kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (0000000082188081): kobject_uevent_env kobject: 'queues' (0000000082188081): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000002528fbef): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'rx-0' (000000002528fbef): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (000000002528fbef): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0/queues/rx-0' kobject: 'tx-0' (0000000045588323): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (0000000045588323): kobject_uevent_env kobject: 'tx-0' (0000000045588323): fill_kobj_path: path = '/devices/virtual/net/ip6gre0.0/queues/tx-0' kobject: 'loop0' (000000003059ba90): kobject_uevent_env kobject: 'loop0' (000000003059ba90): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000d8064e45): kobject_uevent_env kobject: 'loop1' (00000000d8064e45): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000d9dbfe47): kobject_uevent_env kobject: 'ip6gre0.0' (0000000077689a80): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop5' (00000000d9dbfe47): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003059ba90): kobject_uevent_env