====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc6-next-20181217+ #172 Not tainted ------------------------------------------------------ syz-executor2/8270 is trying to acquire lock: kobject: 'loop4' (00000000b29319bf): kobject_uevent_env 00000000bad12b22 (&tbl->lock){+.-.}, at: neigh_change_state+0x1dc/0x7a0 net/core/neighbour.c:141 kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' but task is already holding lock: 000000009dc7ba56 (&n->lock){++--}, at: __neigh_update+0xe6/0x1eb0 net/core/neighbour.c:1203 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&n->lock){++--}: __raw_write_lock include/linux/rwlock_api_smp.h:210 [inline] _raw_write_lock+0x2d/0x40 kernel/locking/spinlock.c:288 neigh_flush_dev+0x34f/0x960 net/core/neighbour.c:294 neigh_changeaddr+0x31/0x40 net/core/neighbour.c:325 ndisc_netdev_event+0xe6/0x5b0 net/ipv6/ndisc.c:1770 kobject: 'loop4' (00000000b29319bf): kobject_uevent_env notifier_call_chain+0x17e/0x380 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1737 call_netdevice_notifiers_extack net/core/dev.c:1749 [inline] call_netdevice_notifiers net/core/dev.c:1763 [inline] dev_set_mac_address+0x293/0x3b0 net/core/dev.c:7780 do_setlink+0x7c7/0x3f30 net/core/rtnetlink.c:2447 __rtnl_newlink+0xcde/0x19e0 net/core/rtnetlink.c:3115 rtnl_newlink+0x6b/0xa0 net/core/rtnetlink.c:3240 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4971 kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4989 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:632 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2117 __sys_sendmsg+0x11d/0x280 net/socket.c:2155 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 kobject: 'loop1' (000000001b04f52f): kobject_uevent_env do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&tbl->lock){+.-.}: kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3841 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x31/0x40 kernel/locking/spinlock.c:312 neigh_change_state+0x1dc/0x7a0 net/core/neighbour.c:141 __neigh_update+0x478/0x1eb0 net/core/neighbour.c:1302 neigh_update+0x37/0x50 net/core/neighbour.c:1372 arp_req_set+0x54c/0xaa0 net/ipv4/arp.c:1072 arp_ioctl+0x48b/0xae0 net/ipv4/arp.c:1230 inet_ioctl+0x237/0x360 net/ipv4/af_inet.c:932 sock_do_ioctl+0xeb/0x420 net/socket.c:951 sock_ioctl+0x313/0x690 net/socket.c:1075 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 ksys_ioctl+0xa9/0xd0 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+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- kobject: 'loop4' (00000000b29319bf): kobject_uevent_env lock(&n->lock); lock(&tbl->lock); kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' lock(&n->lock); lock(&tbl->lock); *** DEADLOCK *** 2 locks held by syz-executor2/8270: #0: 00000000db44b6d4 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 #1: 000000009dc7ba56 (&n->lock){++--}, at: __neigh_update+0xe6/0x1eb0 net/core/neighbour.c:1203 stack backtrace: kobject: 'loop1' (000000001b04f52f): kobject_uevent_env CPU: 1 PID: 8270 Comm: syz-executor2 Not tainted 4.20.0-rc6-next-20181217+ #172 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 kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' print_circular_bug.isra.36.cold.58+0x1bd/0x27d 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+0x3399/0x4c20 kernel/locking/lockdep.c:3338 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3841 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x31/0x40 kernel/locking/spinlock.c:312 neigh_change_state+0x1dc/0x7a0 net/core/neighbour.c:141 __neigh_update+0x478/0x1eb0 net/core/neighbour.c:1302 neigh_update+0x37/0x50 net/core/neighbour.c:1372 arp_req_set+0x54c/0xaa0 net/ipv4/arp.c:1072 arp_ioctl+0x48b/0xae0 net/ipv4/arp.c:1230 inet_ioctl+0x237/0x360 net/ipv4/af_inet.c:932 sock_do_ioctl+0xeb/0x420 net/socket.c:951 sock_ioctl+0x313/0x690 net/socket.c:1075 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 ksys_ioctl+0xa9/0xd0 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+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 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:00007f94b3cbcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 RDX: 0000000020000180 RSI: 0000000000008955 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94b3cbd6d4 R13: 00000000004c2747 R14: 00000000004d46f8 R15: 00000000ffffffff kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: '0:44' (00000000a85f6369): kobject_uevent_env kobject: '0:44' (00000000a85f6369): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:44' (00000000a85f6369): kobject_cleanup, parent (null) kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: '0:44' (00000000a85f6369): calling ktype release kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '0:44': free name kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: '0:44' (0000000066397acc): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:44' (0000000066397acc): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:44' (0000000066397acc): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:44' (0000000066397acc): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: '0:44' (0000000066397acc): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:44' (0000000066397acc): kobject_cleanup, parent (null) kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: '0:44' (0000000066397acc): calling ktype release kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:44': free name kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: '0:44' (000000003e94ec18): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:44' (000000003e94ec18): kobject_uevent_env kobject: '0:44' (000000003e94ec18): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:44' (000000003e94ec18): kobject_uevent_env kobject: '0:44' (000000003e94ec18): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: '0:44' (000000003e94ec18): kobject_cleanup, parent (null) kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:44' (000000003e94ec18): calling ktype release kobject: '0:44': free name kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env FAT-fs (loop5): bogus number of reserved sectors FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env FAT-fs (loop5): bogus number of reserved sectors kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' FAT-fs (loop5): bogus number of reserved sectors FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:44' (00000000b513d117): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:44' (00000000b513d117): kobject_uevent_env kobject: '0:44' (00000000b513d117): fill_kobj_path: path = '/devices/virtual/bdi/0:44' print_req_error: I/O error, dev loop4, sector 264064 flags 80700 kobject: 'loop2' (00000000f88156a3): kobject_uevent_env FAT-fs (loop5): bogus number of reserved sectors kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env print_req_error: I/O error, dev loop4, sector 264064 flags 0 Buffer I/O error on dev loop4, logical block 33008, async page read kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '0:44' (00000000b513d117): kobject_uevent_env kobject: '0:44' (00000000b513d117): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: '0:44' (00000000b513d117): kobject_cleanup, parent (null) kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: '0:44' (00000000b513d117): calling ktype release kobject: '0:44': free name kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: '0:44' (000000002fce5fcc): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' FAT-fs (loop5): bogus number of reserved sectors kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:44' (000000002fce5fcc): kobject_uevent_env FAT-fs (loop5): Can't find a valid FAT filesystem kobject: '0:44' (000000002fce5fcc): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: '0:44' (000000002fce5fcc): kobject_uevent_env kobject: '0:44' (000000002fce5fcc): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:44' (000000002fce5fcc): kobject_cleanup, parent (null) kobject: '0:44' (000000002fce5fcc): calling ktype release kobject: '0:44': free name kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:44' (00000000a5df2279): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:44' (00000000a5df2279): kobject_uevent_env kobject: '0:44' (00000000a5df2279): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env FAT-fs (loop5): bogus number of reserved sectors kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000001b04f52f): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop1' (000000001b04f52f): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:44' (00000000a5df2279): kobject_uevent_env kobject: '0:44' (00000000a5df2279): fill_kobj_path: path = '/devices/virtual/bdi/0:44' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: '0:44' (00000000a5df2279): kobject_cleanup, parent (null) kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:44' (00000000a5df2279): calling ktype release kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: '0:44': free name kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' FAT-fs (loop5): invalid media value (0x00) FAT-fs (loop5): Can't find a valid FAT filesystem kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000b860c53d): kobject_uevent_env kobject: 'loop3' (00000000b860c53d): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000003c24fdbb): kobject_uevent_env kobject: 'loop0' (000000003c24fdbb): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000094bd4dd9): kobject_uevent_env kobject: 'loop5' (0000000094bd4dd9): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f88156a3): kobject_uevent_env kobject: 'loop2' (00000000f88156a3): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000b29319bf): kobject_uevent_env kobject: 'loop4' (00000000b29319bf): fill_kobj_path: path = '/devices/virtual/block/loop4'