loop5: rw=12288, want=8200, limit=20 bond1: Enslaving bond888 as a backup interface with a down link attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 ============================================ WARNING: possible recursive locking detected 4.19.98-syzkaller #0 Not tainted -------------------------------------------- syz-executor.3/31073 is trying to acquire lock: 00000000c18ca6a9 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xe1/0x560 drivers/net/bonding/bond_main.c:3450 but task is already holding lock: 00000000ea691994 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xe1/0x560 drivers/net/bonding/bond_main.c:3450 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&bond->stats_lock)->rlock#2/2); lock(&(&bond->stats_lock)->rlock#2/2); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by syz-executor.3/31073: #0: 00000000a0d11fb8 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000a0d11fb8 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 #1: 00000000ea691994 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xe1/0x560 drivers/net/bonding/bond_main.c:3450 #2: 0000000057fcdce9 (rcu_read_lock){....}, at: bond_get_nest_level drivers/net/bonding/bond_main.c:3439 [inline] #2: 0000000057fcdce9 (rcu_read_lock){....}, at: bond_get_stats+0xc0/0x560 drivers/net/bonding/bond_main.c:3450 stack backtrace: CPU: 0 PID: 31073 Comm: syz-executor.3 Not tainted 4.19.98-syzkaller #0 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+0x197/0x210 lib/dump_stack.c:118 print_deadlock_bug kernel/locking/lockdep.c:1759 [inline] check_deadlock kernel/locking/lockdep.c:1803 [inline] validate_chain kernel/locking/lockdep.c:2399 [inline] __lock_acquire.cold+0x20f/0x4a7 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 _raw_spin_lock_nested+0x35/0x50 kernel/locking/spinlock.c:354 bond_get_stats+0xe1/0x560 drivers/net/bonding/bond_main.c:3450 dev_get_stats+0x8e/0x280 net/core/dev.c:9049 bond_get_stats+0x23e/0x560 drivers/net/bonding/bond_main.c:3456 dev_get_stats+0x8e/0x280 net/core/dev.c:9049 rtnl_fill_stats+0x4d/0xac0 net/core/rtnetlink.c:1176 rtnl_fill_ifinfo+0x1101/0x3660 net/core/rtnetlink.c:1663 rtmsg_ifinfo_build_skb+0xcd/0x1a0 net/core/rtnetlink.c:3347 rtmsg_ifinfo_event.part.0+0x43/0xe0 net/core/rtnetlink.c:3379 rtmsg_ifinfo_event net/core/rtnetlink.c:4826 [inline] rtnetlink_event+0x12c/0x150 net/core/rtnetlink.c:4819 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1748 call_netdevice_notifiers net/core/dev.c:1766 [inline] netdev_features_change net/core/dev.c:1334 [inline] netdev_change_features+0x7e/0xb0 net/core/dev.c:8487 bond_compute_features.isra.0+0x4de/0x950 drivers/net/bonding/bond_main.c:1116 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3184 [inline] bond_netdev_event+0x537/0xb30 drivers/net/bonding/bond_main.c:3225 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1748 call_netdevice_notifiers net/core/dev.c:1766 [inline] netdev_features_change net/core/dev.c:1334 [inline] netdev_change_features+0x7e/0xb0 net/core/dev.c:8487 bond_compute_features.isra.0+0x4de/0x950 drivers/net/bonding/bond_main.c:1116 bond_enslave+0x1740/0x5310 drivers/net/bonding/bond_main.c:1754 do_set_master net/core/rtnetlink.c:2321 [inline] do_set_master+0x1ca/0x230 net/core/rtnetlink.c:2295 rtnl_newlink+0x12a7/0x1600 net/core/rtnetlink.c:3160 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4768 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f19fac27c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f19fac286d4 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000099e R14: 00000000004cb152 R15: 000000000075bfd4 bond888: Warning: No 802.3ad response from the link partner for any adapters in the bond bond888: Enslaving gretap723 as a backup interface with an up link bond888: Warning: No 802.3ad response from the link partner for any adapters in the bond bond902: Enslaving gretap720 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device bond889: Enslaving gretap724 as a backup interface with an up link loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond903: Enslaving gretap721 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 validate_nla: 13 callbacks suppressed netlink: 'syz-executor.3': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 bond890: Enslaving gretap725 as a backup interface with an up link netlink: 'syz-executor.4': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond904: Enslaving gretap722 as a backup interface with an up link netlink: 'syz-executor.3': attribute type 1 has an invalid length. netlink: 'syz-executor.4': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device netlink: 'syz-executor.3': attribute type 1 has an invalid length. loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 netlink: 'syz-executor.4': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond905: Enslaving gretap723 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond891: Enslaving gretap726 as a backup interface with an up link bond891: Warning: No 802.3ad response from the link partner for any adapters in the bond 8021q: adding VLAN 0 to HW filter on device bond891 bond0: Enslaving bond891 as an active interface with an up link netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 'syz-executor.3': attribute type 1 has an invalid length. bond891: Warning: No 802.3ad response from the link partner for any adapters in the bond netlink: 'syz-executor.4': attribute type 1 has an invalid length. f2fs_msg: 70 callbacks suppressed F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) bond906: Enslaving gretap724 as a backup interface with an up link nla_parse: 23 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock netlink: 'syz-executor.3': attribute type 1 has an invalid length. attempt to access beyond end of device netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 F2FS-fs (loop5): Failed to get valid F2FS checkpoint F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock bond892: Enslaving gretap727 as a backup interface with an up link bond892: Warning: No 802.3ad response from the link partner for any adapters in the bond attempt to access beyond end of device 8021q: adding VLAN 0 to HW filter on device bond892 loop5: rw=12288, want=8200, limit=20 bond0: Enslaving bond892 as an active interface with an up link attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. F2FS-fs (loop5): Failed to get valid F2FS checkpoint netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. bond892: Warning: No 802.3ad response from the link partner for any adapters in the bond F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 F2FS-fs (loop5): Failed to get valid F2FS checkpoint F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond907: Enslaving gretap725 as a backup interface with an up link netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. bond893: Enslaving gretap728 as a backup interface with an up link 8021q: adding VLAN 0 to HW filter on device bond893 bond893: Warning: No 802.3ad response from the link partner for any adapters in the bond attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device bond0: Enslaving bond893 as an active interface with an up link loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. loop5: rw=12288, want=12296, limit=20 bond893: Warning: No 802.3ad response from the link partner for any adapters in the bond netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond908: Enslaving gretap726 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device bond894: Enslaving gretap729 as a backup interface with an up link loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 8021q: adding VLAN 0 to HW filter on device bond894 bond894: Warning: No 802.3ad response from the link partner for any adapters in the bond bond0: Enslaving bond894 as an active interface with an up link netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 bond894: Warning: No 802.3ad response from the link partner for any adapters in the bond attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond909: Enslaving gretap727 as a backup interface with an up link attempt to access beyond end of device bond895: Enslaving gretap730 as a backup interface with an up link loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond895: Warning: No 802.3ad response from the link partner for any adapters in the bond attempt to access beyond end of device 8021q: adding VLAN 0 to HW filter on device bond895 loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond0: Enslaving bond895 as an active interface with an up link attempt to access beyond end of device bond895: Warning: No 802.3ad response from the link partner for any adapters in the bond loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond896: Enslaving gretap731 as a backup interface with an up link attempt to access beyond end of device bond910: Enslaving gretap728 as a backup interface with an up link loop5: rw=12288, want=8200, limit=20 bond896: Warning: No 802.3ad response from the link partner for any adapters in the bond 8021q: adding VLAN 0 to HW filter on device bond896 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond0: Enslaving bond896 as an active interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond911: Enslaving gretap729 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device bond897: Enslaving gretap732 as a backup interface with an up link loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond912: Enslaving gretap730 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 bond898: Enslaving gretap733 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=103 sclass=netlink_route_socket pig=31505 comm=syz-executor.2 attempt to access beyond end of device validate_nla: 24 callbacks suppressed netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 'syz-executor.3': attribute type 1 has an invalid length. loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device netlink: 'syz-executor.4': attribute type 1 has an invalid length. loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device netlink: 'syz-executor.3': attribute type 1 has an invalid length. loop5: rw=12288, want=12296, limit=20 bond899: Enslaving gretap734 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond913: Enslaving gretap731 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device 8021q: adding VLAN 0 to HW filter on device bond899 loop5: rw=12288, want=12296, limit=20 bond0: Enslaving bond899 as an active interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 netlink: 'syz-executor.4': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 netlink: 'syz-executor.3': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 netlink: 'syz-executor.3': attribute type 1 has an invalid length. bond900: Enslaving gretap735 as a backup interface with an up link attempt to access beyond end of device netlink: 'syz-executor.4': attribute type 1 has an invalid length. loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 f2fs_msg: 91 callbacks suppressed F2FS-fs (loop5): Failed to get valid F2FS checkpoint 8021q: adding VLAN 0 to HW filter on device bond900 net_ratelimit: 3 callbacks suppressed bond900: Warning: No 802.3ad response from the link partner for any adapters in the bond bond0: Enslaving bond900 as an active interface with an up link bond914: Enslaving gretap732 as a backup interface with an up link nla_parse: 26 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) netlink: 'syz-executor.3': attribute type 1 has an invalid length. F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device bond900: Warning: No 802.3ad response from the link partner for any adapters in the bond netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. loop5: rw=12288, want=8200, limit=20 netlink: 'syz-executor.4': attribute type 1 has an invalid length. attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 F2FS-fs (loop5): Failed to get valid F2FS checkpoint F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 F2FS-fs (loop5): Failed to get valid F2FS checkpoint bond901: Enslaving gretap736 as a backup interface with an up link F2FS-fs (loop5): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop5): Can't find valid F2FS filesystem in 1th superblock bond915: Enslaving gretap733 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 F2FS-fs (loop5): Failed to get valid F2FS checkpoint 8021q: adding VLAN 0 to HW filter on device bond901 attempt to access beyond end of device bond901: Warning: No 802.3ad response from the link partner for any adapters in the bond loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond0: Enslaving bond901 as an active interface with an up link netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device bond901: Warning: No 802.3ad response from the link partner for any adapters in the bond netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond902: Enslaving gretap737 as a backup interface with an up link netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device bond916: Enslaving gretap734 as a backup interface with an up link loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 batman_adv: Cannot find parent device attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond903: Enslaving gretap738 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20 bond917: Enslaving gretap735 as a backup interface with an up link attempt to access beyond end of device loop5: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop5: rw=12288, want=12296, limit=20