device team_slave_1 left promiscuous mode
device team0 entered promiscuous mode
------------[ cut here ]------------
device team_slave_0 entered promiscuous mode
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 8507 at lib/refcount.c:187 refcount_sub_and_test_checked+0x2c9/0x310 lib/refcount.c:187
kobject: 'kvm' (000000005df70e5f): fill_kobj_path: path = '/devices/virtual/misc/kvm'
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 8507 Comm: syz-executor5 Not tainted 4.20.0-rc3+ #252
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
device team_slave_1 entered promiscuous mode
 panic+0x2ad/0x55c kernel/panic.c:188
8021q: adding VLAN 0 to HW filter on device team0
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
netlink: 28 bytes leftover after parsing attributes in process `syz-executor2'.
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:refcount_sub_and_test_checked+0x2c9/0x310 lib/refcount.c:187
Code: 89 de e8 1a 19 ed fd 84 db 74 07 31 db e9 4d ff ff ff e8 3a 18 ed fd 48 c7 c7 e0 b1 60 88 c6 05 d2 48 80 06 01 e8 77 78 b6 fd <0f> 0b 31 db e9 2c ff ff ff 48 89 cf e8 b6 67 30 fe e9 41 fe ff ff
RSP: 0018:ffff8881daf06010 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff8165eaf5 RDI: 0000000000000005
RBP: ffff8881daf060f8 R08: ffff88818d872480 R09: ffffed103b5e5020
R10: ffffed103b5e5020 R11: ffff8881daf28107 R12: ffff88818d874afc
R13: 00000000ffff0001 R14: ffff8881daf060d0 R15: ffff8881d8b7ce00
 sock_wfree+0xb8/0x180 net/core/sock.c:1817
 sctp_wfree+0x3a8/0xb40 net/sctp/socket.c:8458
 skb_release_head_state+0x15f/0x2e0 net/core/skbuff.c:612
 skb_release_all+0x15/0x60 net/core/skbuff.c:625
 __kfree_skb net/core/skbuff.c:641 [inline]
 consume_skb+0x1ae/0x570 net/core/skbuff.c:701
 sctp_chunk_destroy net/sctp/sm_make_chunk.c:1462 [inline]
 sctp_chunk_put+0x2d4/0x450 net/sctp/sm_make_chunk.c:1489
 sctp_datamsg_destroy net/sctp/chunk.c:130 [inline]
 sctp_datamsg_put+0x289/0x620 net/sctp/chunk.c:147
 sctp_chunk_free+0x46/0x60 net/sctp/sm_make_chunk.c:1474
 __sctp_outq_teardown+0x37d/0x11f0 net/sctp/outqueue.c:234
 sctp_outq_free+0x15/0x20 net/sctp/outqueue.c:291
 sctp_association_free+0x2f0/0x972 net/sctp/associola.c:359
 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:939 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1353 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
 sctp_do_sm+0x4a3b/0x7190 net/sctp/sm_sideeffect.c:1191
 sctp_assoc_bh_rcv+0x346/0x670 net/sctp/associola.c:1071
 sctp_inq_push+0x280/0x370 net/sctp/inqueue.c:95
 sctp_rcv+0x2d93/0x3c00 net/sctp/input.c:268
 sctp6_rcv+0x15/0x30 net/sctp/ipv6.c:1061
 ip6_input_finish+0x3fc/0x1aa0 net/ipv6/ip6_input.c:384
 NF_HOOK include/linux/netfilter.h:289 [inline]
 ip6_input+0xe9/0x600 net/ipv6/ip6_input.c:427
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x17a/0x330 net/ipv6/ip6_input.c:76
 NF_HOOK include/linux/netfilter.h:289 [inline]
 ipv6_rcv+0x115/0x640 net/ipv6/ip6_input.c:272
 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4941
 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5051
 process_backlog+0x24e/0x7a0 net/core/dev.c:5859
 napi_poll net/core/dev.c:6282 [inline]
 net_rx_action+0x7fa/0x19b0 net/core/dev.c:6348
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1023
 </IRQ>
 do_softirq.part.14+0x126/0x160 kernel/softirq.c:337
 do_softirq kernel/softirq.c:329 [inline]
 __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:696 [inline]
 ip6_finish_output2+0xce4/0x27a0 net/ipv6/ip6_output.c:121
 ip6_finish_output+0x58c/0xc60 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x232/0x9d0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 ip6_xmit+0xf69/0x2420 net/ipv6/ip6_output.c:275
 sctp_v6_xmit+0x3b2/0x790 net/sctp/ipv6.c:230
 sctp_packet_transmit+0x1ede/0x3c10 net/sctp/output.c:640
 sctp_outq_flush_transports net/sctp/outqueue.c:1161 [inline]
 sctp_outq_flush+0x610/0x34f0 net/sctp/outqueue.c:1209
 sctp_outq_uncork+0x6a/0x80 net/sctp/outqueue.c:772
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1349 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
 sctp_do_sm+0x4f25/0x7190 net/sctp/sm_sideeffect.c:1191
 sctp_primitive_ABORT+0xa0/0xd0 net/sctp/primitive.c:119
 sctp_close+0x278/0xad0 net/sctp/socket.c:1540
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:458
 __sock_release+0xd7/0x250 net/socket.c:579
 sock_close+0x19/0x20 net/socket.c:1141
 __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
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1ad6/0x26d0 kernel/exit.c:867
 do_group_exit+0x177/0x440 kernel/exit.c:970
 get_signal+0x8b0/0x1980 kernel/signal.c:2517
 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_32_irqs_on arch/x86/entry/common.c:341 [inline]
 do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7ff5a29
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5ff112c EFLAGS: 00000292 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 000000000814af68 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000814af6c
RBP: 00000000f5ff1228 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..