FS-Cache: N-cookie c=000000009ea84ee8 [p=00000000232d5e95 fl=2 nc=0 na=1] FS-Cache: N-cookie d=000000007959f876 n=0000000086411271 FS-Cache: N-key=[10] '0200020000807f000008' ====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc5+ #141 Not tainted ------------------------------------------------------ syz-executor4/23360 is trying to acquire lock: 00000000e866558d (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x98/0x120 drivers/media/v4l2-core/v4l2-mem2mem.c:1105 but task is already holding lock: 00000000f05787db (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2085 [inline] 00000000f05787db (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] 00000000f05787db (&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: -> #5 (&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 -> #4 (&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 do_io_accounting+0x1d2/0xf80 fs/proc/base.c:2703 proc_tgid_io_accounting+0x22/0x30 fs/proc/base.c:2752 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 do_preadv+0x1cc/0x280 fs/read_write.c:1070 __do_sys_preadv fs/read_write.c:1120 [inline] __se_sys_preadv fs/read_write.c:1115 [inline] __x64_sys_preadv+0x9a/0xf0 fs/read_write.c:1115 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #3 (&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 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 __vfs_read+0x117/0x9b0 fs/read_write.c:416 vfs_read+0x17f/0x3c0 fs/read_write.c:452 kernel_read+0xab/0x120 fs/read_write.c:431 p9_fd_read net/9p/trans_fd.c:278 [inline] p9_read_work+0x2ed/0x1140 net/9p/trans_fd.c:313 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->rq)){+.+.}: 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+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 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-executor4/23360: #0: 00000000f05787db (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2085 [inline] #0: 00000000f05787db (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl fs/eventpoll.c:2007 [inline] #0: 00000000f05787db (&ep->mtx){+.+.}, at: __x64_sys_epoll_ctl+0x7d4/0x1080 fs/eventpoll.c:2007 stack backtrace: CPU: 0 PID: 23360 Comm: syz-executor4 Not tainted 4.20.0-rc5+ #141 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:00007f876e549c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569 RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 00007f876e54a6d4 R13: 00000000004bdc2c R14: 00000000004ccf78 R15: 00000000ffffffff kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env binder_transaction: 12 callbacks suppressed binder: 23366:23373 got transaction to invalid handle kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder_transaction: 12 callbacks suppressed binder: 23366:23373 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000008a49cf97 [p=00000000232d5e95 fl=222 nc=0 na=1] binder: 23366:23373 ioctl c0306201 20000340 returned -14 FS-Cache: O-cookie d=000000007959f876 n=00000000e74689f7 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000e8f4ed04 [p=00000000232d5e95 fl=2 nc=0 na=1] binder_release_work: 12 callbacks suppressed binder: undelivered TRANSACTION_ERROR: 29201 FS-Cache: N-cookie d=000000007959f876 n=00000000a512330d FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23389:23393 got transaction to invalid handle kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23389:23393 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: 23389:23393 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23389:23393 got transaction to invalid handle kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: undelivered TRANSACTION_ERROR: 29201 binder: 23389:23393 transaction failed 29201/-22, size 0-0 line 2834 binder: 23389:23393 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23425:23427 got transaction to invalid handle binder: 23423:23424 got transaction to invalid handle binder: 23423:23424 transaction failed 29201/-22, size 0-0 line 2834 binder: 23425:23427 transaction failed 29201/-22, size 0-0 line 2834 binder: 23423:23424 ioctl c0306201 20000340 returned -14 binder: 23425:23427 ioctl c0306201 20000340 returned -14 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23452:23454 got transaction to invalid handle binder: 23452:23454 transaction failed 29201/-22, size 0-0 line 2834 binder: 23452:23454 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23460:23464 got transaction to invalid handle kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23460:23464 transaction failed 29201/-22, size 0-0 line 2834 binder: 23460:23464 ioctl c0306201 20000340 returned -14 binder: 23452:23454 got transaction to invalid handle kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 binder: 23452:23454 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: 23452:23454 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: undelivered TRANSACTION_ERROR: 29201 binder: 23475:23476 got transaction to invalid handle kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23475:23476 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23475:23476 ioctl c0306201 20000340 returned -14 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder: 23478:23481 got transaction to invalid handle kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23478:23481 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23478:23481 ioctl c0306201 20000340 returned -14 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23478:23481 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23501:23502 ioctl c0306201 20000340 returned -14 kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23501:23502 ioctl c0306201 20000340 returned -14 binder: 23506:23510 ioctl c0306201 20000340 returned -14 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: 23522:23524 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: 23530:23531 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23530:23531 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env binder: 23554:23558 ioctl c0306201 20000340 returned -14 kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23554:23558 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder: 23581:23585 ioctl c0306201 20000340 returned -14 kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23581:23585 ioctl c0306201 20000340 returned -14 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: 23601:23605 ioctl c0306201 20000340 returned -14 binder: 23601:23605 ioctl c0306201 20000340 returned -14 kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23613:23614 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23613:23614 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env binder: 23649:23656 ioctl c0306201 20000340 returned -14 kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder_alloc: binder_alloc_mmap_handler: 23651 20ffb000-20fff000 already mapped failed -16 binder: 23649:23656 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder_alloc: binder_alloc_mmap_handler: 23651 20ffd000-20fff000 already mapped failed -16 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23674:23676 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23674:23676 ioctl c0306201 20000340 returned -14 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23698:23702 ioctl c0306201 0 returned -14 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: 23701:23703 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23701:23703 ioctl c0306201 20000340 returned -14 kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder: 23712:23716 ioctl c0306201 0 returned -14 kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: 23718:23722 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: 23718:23722 ioctl c0306201 20000340 returned -14 binder: 23725:23727 ioctl c0306201 0 returned -14 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env binder: 23731:23735 ioctl c0306201 20000340 returned -14 kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder: 23731:23735 ioctl c0306201 20000340 returned -14 kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder_transaction: 25 callbacks suppressed binder: 23774:23775 got transaction to invalid handle kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder_transaction: 25 callbacks suppressed binder: 23774:23775 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23774:23775 ioctl c0306201 20000340 returned -14 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder_release_work: 25 callbacks suppressed binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23805:23807 got transaction to invalid handle kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23805:23807 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23805:23807 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env binder: 23825:23830 got transaction to invalid handle kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 23825:23830 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env binder: 23825:23830 ioctl c0306201 20000340 returned -14 kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env binder: 23825:23830 got transaction to invalid handle kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: 23825:23830 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23825:23830 ioctl c0306201 20000340 returned -14 binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23851:23856 got transaction to invalid handle binder: 23851:23856 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: 23851:23856 ioctl c0306201 20000340 returned -14 kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' binder: 23879:23886 got transaction to invalid handle binder: 23879:23886 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: 23879:23886 ioctl c0306201 20000340 returned -14 kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23879:23886 got transaction to invalid handle kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env binder: 23879:23886 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: 23879:23886 ioctl c0306201 20000340 returned -14 binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' binder: 23911:23917 got transaction to invalid handle binder: 23911:23917 transaction failed 29201/-22, size 0-0 line 2834 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000042360c7d [p=00000000232d5e95 fl=222 nc=0 na=1] FS-Cache: O-cookie d=000000007959f876 n=00000000427d7cf1 binder: 23911:23917 ioctl c0306201 20000340 returned -14 FS-Cache: O-key=[10] '0200020000807f000008' binder: undelivered TRANSACTION_ERROR: 29201 FS-Cache: N-cookie c=00000000f1f211f0 [p=00000000232d5e95 fl=2 nc=0 na=1] FS-Cache: N-cookie d=000000007959f876 n=000000008e6d20fa FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env binder: 23925:23926 got transaction to invalid handle kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' binder: 23925:23926 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' binder: 23925:23926 got transaction to invalid handle kobject: 'loop4' (0000000033fee3de): kobject_uevent_env binder: undelivered TRANSACTION_ERROR: 29201 binder: 23925:23926 transaction failed 29201/-22, size 0-0 line 2834 kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' binder: undelivered TRANSACTION_ERROR: 29201 kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000001edd6584 [p=00000000232d5e95 fl=222 nc=0 na=1] FS-Cache: O-cookie d=000000007959f876 n=000000002e46d86e FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000cb8fc1be [p=00000000232d5e95 fl=2 nc=0 na=1] FS-Cache: N-cookie d=000000007959f876 n=00000000918fa08b FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000001edd6584 [p=00000000232d5e95 fl=222 nc=0 na=1] FS-Cache: O-cookie d=000000007959f876 n=000000002e46d86e FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000233b26a8 [p=00000000232d5e95 fl=2 nc=0 na=1] FS-Cache: N-cookie d=000000007959f876 n=000000009f6d5140 FS-Cache: N-key=[10] '0200020000807f000008' kobject: 'loop0' (00000000e6afb5de): kobject_uevent_env kobject: 'loop0' (00000000e6afb5de): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000ddb5eb18): kobject_uevent_env kobject: 'loop3' (00000000ddb5eb18): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000f1244b46): kobject_uevent_env kobject: 'loop5' (00000000f1244b46): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000da66cbea): kobject_uevent_env kobject: 'loop1' (00000000da66cbea): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000033fee3de): kobject_uevent_env kobject: 'loop4' (0000000033fee3de): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000073a8c2b9): kobject_uevent_env kobject: 'loop2' (0000000073a8c2b9): fill_kobj_path: path = '/devices/virtual/block/loop2'