bisecting fixing commit since 98db2bf27b9ed2d5ed0b6c9c8a4bfcb127a19796 building syzkaller on cf9142006bfa242d2bbf5916749e42327103f803 testing commit 98db2bf27b9ed2d5ed0b6c9c8a4bfcb127a19796 with gcc (GCC) 8.1.0 kernel signature: 30a6ddd7a1dcb0c721ae083fe87c6843737c1cea64336cfe7f1ea6c6a64e541d run #0: crashed: BUG: looking up invalid subclass: 8 run #1: crashed: BUG: looking up invalid subclass: 8 run #2: crashed: BUG: looking up invalid subclass: 8 run #3: crashed: BUG: looking up invalid subclass: 8 run #4: crashed: BUG: looking up invalid subclass: 8 run #5: crashed: BUG: looking up invalid subclass: 8 run #6: crashed: BUG: looking up invalid subclass: 8 run #7: crashed: BUG: looking up invalid subclass: 8 run #8: crashed: BUG: looking up invalid subclass: 9 run #9: crashed: BUG: looking up invalid subclass: 8 testing current HEAD 4520f06b03ae667e442da1ab9351fd28cd7ac598 testing commit 4520f06b03ae667e442da1ab9351fd28cd7ac598 with gcc (GCC) 8.1.0 kernel signature: 27e2e7e3b2c31bb10a3dd499dd4190d010745273eebbdd97b4588ee3d6a9211d run #0: crashed: BUG: looking up invalid subclass: 8 run #1: crashed: BUG: looking up invalid subclass: 8 run #2: crashed: BUG: looking up invalid subclass: 8 run #3: crashed: BUG: looking up invalid subclass: 8 run #4: crashed: BUG: looking up invalid subclass: 8 run #5: crashed: BUG: looking up invalid subclass: 9 run #6: crashed: BUG: looking up invalid subclass: 8 run #7: crashed: BUG: looking up invalid subclass: 8 run #8: crashed: BUG: looking up invalid subclass: 8 run #9: crashed: BUG: looking up invalid subclass: 8 revisions tested: 2, total time: 25m2.295741029s (build: 17m15.970062534s, test: 6m36.590611628s) the crash still happens on HEAD commit msg: Linux 4.14.175 crash: BUG: looking up invalid subclass: 8 bond42: making interface macvlan99 the new active one bond42: Enslaving macvlan99 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan85 bond37: Enslaving macvlan85 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan84 BUG: looking up invalid subclass: 8 turning off the locking correctness validator. CPU: 0 PID: 17015 Comm: syz-executor.3 Not tainted 4.14.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xf7/0x13b lib/dump_stack.c:58 look_up_lock_class kernel/locking/lockdep.c:673 [inline] register_lock_class+0x5b7/0x1cd0 kernel/locking/lockdep.c:756 __lock_acquire+0x14f/0x4500 kernel/locking/lockdep.c:3374 lock_acquire+0x173/0x400 kernel/locking/lockdep.c:3994 _raw_spin_lock_nested+0x33/0x50 kernel/locking/spinlock.c:362 bond_get_stats+0xbd/0x4d0 drivers/net/bonding/bond_main.c:3416 dev_get_stats+0x85/0x240 net/core/dev.c:8004 rtnl_fill_stats+0x44/0xc00 net/core/rtnetlink.c:1079 rtnl_fill_ifinfo+0xdac/0x3200 net/core/rtnetlink.c:1385 rtmsg_ifinfo_build_skb+0x8c/0x120 net/core/rtnetlink.c:2912 rtmsg_ifinfo_event.part.27+0x16/0xb0 net/core/rtnetlink.c:2942 rtmsg_ifinfo_event net/core/rtnetlink.c:4366 [inline] rtnetlink_event+0xc2/0x110 net/core/rtnetlink.c:4359 notifier_call_chain+0xd6/0x150 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x11/0x20 kernel/notifier.c:401 call_netdevice_notifiers_info+0x4b/0x60 net/core/dev.c:1671 call_netdevice_notifiers net/core/dev.c:1687 [inline] netdev_features_change net/core/dev.c:1300 [inline] netdev_change_features+0x65/0x80 net/core/dev.c:7449 bond_compute_features.isra.44+0x4a2/0x7e0 drivers/net/bonding/bond_main.c:1122 bond_enslave+0x156c/0x4a80 drivers/net/bonding/bond_main.c:1731 do_set_master+0x163/0x1f0 net/core/rtnetlink.c:1961 rtnl_newlink+0xf41/0x1390 net/core/rtnetlink.c:2756 rtnetlink_rcv_msg+0x34c/0x9e0 net/core/rtnetlink.c:4315 netlink_rcv_skb+0x133/0x370 net/netlink/af_netlink.c:2433 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4327 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x40b/0x600 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x730/0xbd0 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:656 ___sys_sendmsg+0x625/0x920 net/socket.c:2062 __sys_sendmsg+0xc1/0x140 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0xd/0x20 net/socket.c:2103 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6c9 RSP: 002b:00007f024af86c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f024af876d4 RCX: 000000000045c6c9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000076bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009cf R14: 00000000004cc73c R15: 000000000076bfd4 bond34: making interface macvlan84 the new active one bond34: Enslaving macvlan84 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan85 bond36: making interface macvlan85 the new active one bond36: Enslaving macvlan85 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan67 bond30: making interface macvlan67 the new active one bond30: Enslaving macvlan67 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan81 bond35: Enslaving macvlan81 as an active interface with a down link bond43: making interface macvlan102 the new active one bond43: Enslaving macvlan102 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan70 bond31: making interface macvlan70 the new active one bond31: Enslaving macvlan70 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan88 bond37: making interface macvlan88 the new active one bond37: Enslaving macvlan88 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan84 bond36: making interface macvlan84 the new active one bond36: Enslaving macvlan84 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan90 bond39: making interface macvlan90 the new active one bond39: Enslaving macvlan90 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan74 bond33: Enslaving macvlan74 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan92 bond38: Enslaving macvlan92 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan88 bond36: making interface macvlan88 the new active one bond36: Enslaving macvlan88 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan94 bond41: making interface macvlan94 the new active one bond41: Enslaving macvlan94 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan87 bond37: making interface macvlan87 the new active one bond37: Enslaving macvlan87 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan107 bond46: Enslaving macvlan107 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan78 bond35: making interface macvlan78 the new active one bond35: Enslaving macvlan78 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan92 bond37: Enslaving macvlan92 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan95 bond39: Enslaving macvlan95 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan91 bond39: Enslaving macvlan91 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan96 bond42: making interface macvlan96 the new active one bond42: Enslaving macvlan96 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan110 bond47: making interface macvlan110 the new active one bond47: Enslaving macvlan110 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan95 bond39: Enslaving macvlan95 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan98 bond40: Enslaving macvlan98 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan80 bond36: Enslaving macvlan80 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan112 bond48: making interface macvlan112 the new active one bond48: Enslaving macvlan112 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan95 bond41: Enslaving macvlan95 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan99 bond43: making interface macvlan99 the new active one bond43: Enslaving macvlan99 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan84 bond37: making interface macvlan84 the new active one bond37: Enslaving macvlan84 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan101 bond41: making interface macvlan101 the new active one bond41: Enslaving macvlan101 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan99 bond43: making interface macvlan99 the new active one bond43: Enslaving macvlan99 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan102 bond44: Enslaving macvlan102 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan88 bond39: making interface macvlan88 the new active one bond39: Enslaving macvlan88 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan101 bond42: making interface macvlan101 the new active one bond42: Enslaving macvlan101 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan105 bond43: making interface macvlan105 the new active one bond43: Enslaving macvlan105 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan116 bond52: Enslaving macvlan116 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan102 bond44: Enslaving macvlan102 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan105 bond45: making interface macvlan105 the new active one bond45: Enslaving macvlan105 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan118 bond53: making interface macvlan118 the new active one bond53: Enslaving macvlan118 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan91 bond41: Enslaving macvlan91 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan105 bond44: Enslaving macvlan105 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan109 bond45: Enslaving macvlan109 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan93 bond42: Enslaving macvlan93 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan111 bond46: Enslaving macvlan111 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan108 bond45: Enslaving macvlan108 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan106 bond45: making interface macvlan106 the new active one bond45: Enslaving macvlan106 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan109 bond46: making interface macvlan109 the new active one bond46: Enslaving macvlan109 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan94 bond43: making interface macvlan94 the new active one bond43: Enslaving macvlan94 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan109 bond46: Enslaving macvlan109 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan124 bond55: making interface macvlan124 the new active one bond55: Enslaving macvlan124 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan112 bond47: making interface macvlan112 the new active one bond47: Enslaving macvlan112 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan114 bond49: Enslaving macvlan114 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan113 bond48: making interface macvlan113 the new active one bond48: Enslaving macvlan113 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan97 bond44: Enslaving macvlan97 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan128 bond57: making interface macvlan128 the new active one bond57: Enslaving macvlan128 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan112 bond47: Enslaving macvlan112 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan117 bond49: Enslaving macvlan117 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan118 bond51: Enslaving macvlan118 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan115 bond48: Enslaving macvlan115 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan100 bond45: making interface macvlan100 the new active one bond45: Enslaving macvlan100 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan132 bond58: making interface macvlan132 the new active one bond58: Enslaving macvlan132 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan121 bond51: making interface macvlan121 the new active one bond51: Enslaving macvlan121 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan121 bond53: Enslaving macvlan121 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan118 bond49: Enslaving macvlan118 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan104 bond47: making interface macvlan104 the new active one bond47: Enslaving macvlan104 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan136 bond59: making interface macvlan136 the new active one bond59: Enslaving macvlan136 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan118 bond49: Enslaving macvlan118 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan123 bond52: making interface macvlan123 the new active one bond52: Enslaving macvlan123 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan125 bond55: Enslaving macvlan125 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan121 bond50: making interface macvlan121 the new active one bond50: Enslaving macvlan121 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan139 bond60: making interface macvlan139 the new active one bond60: Enslaving macvlan139 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan127 bond54: Enslaving macvlan127 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan128 bond56: Enslaving macvlan128 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan130 bond57: Enslaving macvlan130 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan125 bond51: Enslaving macvlan125 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan132 bond58: Enslaving macvlan132 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan110 bond53: making interface macvlan110 the new active one bond53: Enslaving macvlan110 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan129 bond52: making interface macvlan129 the new active one bond52: Enslaving macvlan129 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan125 bond53: Enslaving macvlan125 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan134 bond58: making interface macvlan134 the new active one bond58: Enslaving macvlan134 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan132 bond53: making interface macvlan132 the new active one bond53: Enslaving macvlan132 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan114 bond55: making interface macvlan114 the new active one bond55: Enslaving macvlan114 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan137 bond60: Enslaving macvlan137 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan137 bond61: Enslaving macvlan137 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan136 bond55: Enslaving macvlan136 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan118 bond57: Enslaving macvlan118 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan138 bond56: Enslaving macvlan138 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan141 bond62: making interface macvlan141 the new active one bond62: Enslaving macvlan141 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan141 bond63: Enslaving macvlan141 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan130 bond55: Enslaving macvlan130 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan140 bond57: making interface macvlan140 the new active one bond57: Enslaving macvlan140 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan143 bond64: Enslaving macvlan143 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan121 bond58: Enslaving macvlan121 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan144 bond63: Enslaving macvlan144 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan146 bond64: Enslaving macvlan146 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan145 bond65: Enslaving macvlan145 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan134 bond57: Enslaving macvlan134 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan144 bond58: making interface macvlan144 the new active one bond58: Enslaving macvlan144 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan125 bond60: making interface macvlan125 the new active one bond60: Enslaving macvlan125 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan148 bond65: making interface macvlan148 the new active one bond65: Enslaving macvlan148 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan150 bond66: making interface macvlan150 the new active one bond66: Enslaving macvlan150 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan148 bond59: Enslaving macvlan148 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan149 bond67: Enslaving macvlan149 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan138 bond58: Enslaving macvlan138 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan152 bond67: Enslaving macvlan152 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan130 bond63: Enslaving macvlan130 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan152 bond61: making interface macvlan152 the new active one bond61: Enslaving macvlan152 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan152 bond68: Enslaving macvlan152 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan155 bond68: making interface macvlan155 the new active one bond68: Enslaving macvlan155 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan142 bond60: Enslaving macvlan142 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan132 bond64: Enslaving macvlan132 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan144 8021q: adding VLAN 0 to HW filter on device macvlan134 bond65: making interface macvlan134 the new active one bond65: Enslaving macvlan134 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan154 bond62: Enslaving macvlan154 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan158 bond69: making interface macvlan158 the new active one bond69: Enslaving macvlan158 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan156 bond69: Enslaving macvlan156 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan145 bond61: Enslaving macvlan145 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan158 bond64: making interface macvlan158 the new active one bond64: Enslaving macvlan158 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan159 bond70: Enslaving macvlan159 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan139 bond67: Enslaving macvlan139 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan149 bond63: Enslaving macvlan149 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan163 bond66: Enslaving macvlan163 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan141 bond68: making interface macvlan141 the new active one bond68: Enslaving macvlan141 as an active interface with an up link 8021q: adding VLAN 0 to HW filter on device macvlan163 bond72: Enslaving macvlan163 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan165 bond73: Enslaving macvlan165 as an active interface with a down link 8021q: adding VLAN 0 to HW filter on device macvlan153 bond65: Enslaving macvlan153 as an active interface with a down link