====================================================== WARNING: possible circular locking dependency detected 5.0.0-rc6+ #77 Not tainted ------------------------------------------------------ syz-executor.0/5055 is trying to acquire lock: 00000000582ebd80 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] 00000000582ebd80 (&sb->s_type->i_mutex_key#12){+.+.}, at: shmem_fallocate+0x15a/0xc60 mm/shmem.c:2633 but task is already holding lock: 00000000a48c3f03 (ashmem_mutex){+.+.}, at: ashmem_shrink_scan+0x66/0x4f0 drivers/staging/android/ashmem.c:448 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (ashmem_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 ashmem_mmap+0x55/0x520 drivers/staging/android/ashmem.c:361 call_mmap include/linux/fs.h:1868 [inline] mmap_region+0xc37/0x1760 mm/mmap.c:1786 do_mmap+0x8e2/0x1080 mm/mmap.c:1559 do_mmap_pgoff include/linux/mm.h:2379 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:350 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1609 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&mm->mmap_sem){++++}: down_read+0x3b/0x90 kernel/locking/rwsem.c:24 do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 fault_in_pages_readable include/linux/pagemap.h:603 [inline] iov_iter_fault_in_readable+0x1ba/0x450 lib/iov_iter.c:425 generic_perform_write+0x195/0x530 mm/filemap.c:3198 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3333 generic_file_write_iter+0x360/0x610 mm/filemap.c:3361 call_write_iter include/linux/fs.h:1863 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x613/0x8e0 fs/read_write.c:487 vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_pwrite64+0x183/0x1c0 fs/read_write.c:652 __do_sys_pwrite64 fs/read_write.c:662 [inline] __se_sys_pwrite64 fs/read_write.c:659 [inline] __x64_sys_pwrite64+0x97/0xf0 fs/read_write.c:659 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&sb->s_type->i_mutex_key#12){+.+.}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:757 [inline] shmem_fallocate+0x15a/0xc60 mm/shmem.c:2633 ashmem_shrink_scan drivers/staging/android/ashmem.c:455 [inline] ashmem_shrink_scan+0x1d7/0x4f0 drivers/staging/android/ashmem.c:439 ashmem_ioctl+0x2f0/0x11a0 drivers/staging/android/ashmem.c:797 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#12 --> &mm->mmap_sem --> ashmem_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ashmem_mutex); lock(&mm->mmap_sem); lock(ashmem_mutex); lock(&sb->s_type->i_mutex_key#12); *** DEADLOCK *** 1 lock held by syz-executor.0/5055: #0: 00000000a48c3f03 (ashmem_mutex){+.+.}, at: ashmem_shrink_scan+0x66/0x4f0 drivers/staging/android/ashmem.c:448 stack backtrace: CPU: 0 PID: 5055 Comm: syz-executor.0 Not tainted 5.0.0-rc6+ #77 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+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1224 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2350 [inline] __lock_acquire+0x2f00/0x4700 kernel/locking/lockdep.c:3338 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:757 [inline] shmem_fallocate+0x15a/0xc60 mm/shmem.c:2633 ashmem_shrink_scan drivers/staging/android/ashmem.c:455 [inline] ashmem_shrink_scan+0x1d7/0x4f0 drivers/staging/android/ashmem.c:439 ashmem_ioctl+0x2f0/0x11a0 drivers/staging/android/ashmem.c:797 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa94b134c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 000000000000770a RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa94b1356d4 R13: 00000000004bf0a3 R14: 00000000004d09a0 R15: 00000000ffffffff kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'ip6tnl1' (00000000ac3f48bd): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'ip6tnl1' (00000000ac3f48bd): kobject_uevent_env kobject: 'ip6tnl1' (00000000ac3f48bd): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1' kobject: 'queues' (00000000eb4997d9): kobject_add_internal: parent: 'ip6tnl1', set: '' kobject: 'queues' (00000000eb4997d9): kobject_uevent_env kobject: 'queues' (00000000eb4997d9): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000ce289e9f): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000ce289e9f): kobject_uevent_env kobject: 'rx-0' (00000000ce289e9f): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1/queues/rx-0' kobject: 'tx-0' (0000000087a712ae): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (0000000087a712ae): kobject_uevent_env kobject: 'tx-0' (0000000087a712ae): fill_kobj_path: path = '/devices/virtual/net/ip6tnl1/queues/tx-0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'ip6tnl2' (0000000053430e97): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip6tnl2' (0000000053430e97): kobject_uevent_env kobject: 'ip6tnl2' (0000000053430e97): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2' kobject: 'queues' (0000000015f5411c): kobject_add_internal: parent: 'ip6tnl2', set: '' kobject: 'queues' (0000000015f5411c): kobject_uevent_env kobject: 'queues' (0000000015f5411c): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'rx-0' (000000003967856a): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0' (000000003967856a): kobject_uevent_env kobject: 'rx-0' (000000003967856a): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2/queues/rx-0' kobject: 'tx-0' (000000006e2ef664): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000006e2ef664): kobject_uevent_env kobject: 'tx-0' (000000006e2ef664): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2/queues/tx-0' kobject: 'ip6tnl2' (00000000d45c01e8): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'ip6tnl2' (00000000d45c01e8): kobject_uevent_env kobject: 'ip6tnl2' (00000000d45c01e8): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'queues' (000000003e27658f): kobject_add_internal: parent: 'ip6tnl2', set: '' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (000000003e27658f): kobject_uevent_env kobject: 'queues' (000000003e27658f): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000447e6eb0): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000447e6eb0): kobject_uevent_env kobject: 'rx-0' (00000000447e6eb0): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2/queues/rx-0' kobject: 'tx-0' (000000002a998c10): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000002a998c10): kobject_uevent_env kobject: 'tx-0' (000000002a998c10): fill_kobj_path: path = '/devices/virtual/net/ip6tnl2/queues/tx-0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000e461c466): kobject_uevent_env kobject: 'loop1' (00000000e461c466): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000074fc8126): kobject_uevent_env kobject: 'loop5' (0000000074fc8126): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000004ecfbad0): kobject_uevent_env kobject: 'loop3' (000000004ecfbad0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000c7e21430): kobject_uevent_env kobject: 'loop0' (00000000c7e21430): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000005eb8de78): kobject_uevent_env kobject: 'loop4' (000000005eb8de78): fill_kobj_path: path = '/devices/virtual/block/loop4'