Warning: Permanently added '10.128.1.104' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.891553][ T8426] netlink: 48 bytes leftover after parsing attributes in process `syz-executor556'. [ 74.918243][ T8426] ------------[ cut here ]------------ [ 74.924080][ T8426] refcount_t: decrement hit 0; leaking memory. [ 74.930457][ T8426] WARNING: CPU: 0 PID: 8426 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 [ 74.941798][ T8426] Modules linked in: [ 74.945883][ T8426] CPU: 0 PID: 8426 Comm: syz-executor556 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0 [ 74.956316][ T8426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.967433][ T8426] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 74.973638][ T8426] Code: 1d 5b 7f e6 09 31 ff 89 de e8 7d b6 a7 fd 84 db 75 e0 e8 c4 af a7 fd 48 c7 c7 60 3e c2 89 c6 05 3b 7f e6 09 01 e8 04 00 fe 04 <0f> 0b eb c4 e8 a8 af a7 fd 0f b6 1d 2a 7f e6 09 31 ff 89 de e8 48 [ 74.993358][ T8426] RSP: 0018:ffffc90000f0ee58 EFLAGS: 00010282 [ 74.999447][ T8426] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.007563][ T8426] RDX: ffff8880190cd580 RSI: ffffffff815c3fd5 RDI: fffff520001e1dbd [ 75.015641][ T8426] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 75.023735][ T8426] R10: ffffffff815bd77e R11: 0000000000000000 R12: dffffc0000000000 [ 75.031827][ T8426] R13: ffffc90000f0efa0 R14: ffff888019af0568 R15: ffff8880126b2e00 [ 75.039816][ T8426] FS: 0000000000cd1300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 75.048817][ T8426] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.055478][ T8426] CR2: 000055bce64723b8 CR3: 0000000027595000 CR4: 00000000001506e0 [ 75.063507][ T8426] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.071483][ T8426] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.079516][ T8426] Call Trace: [ 75.082852][ T8426] unregister_netdevice_many+0x1225/0x1790 [ 75.088674][ T8426] ? net_tx_action+0xbe0/0xbe0 [ 75.093489][ T8426] ? rdma_roce_rescan_device+0x30/0x30 [ 75.098967][ T8426] ? skb_dequeue+0x125/0x180 [ 75.103782][ T8426] unregister_netdevice_queue+0x2dd/0x3c0 [ 75.109512][ T8426] ? unregister_netdevice_many+0x1790/0x1790 [ 75.115584][ T8426] register_netdevice+0x10d6/0x1500 [ 75.120812][ T8426] ? netdev_change_features+0xb0/0xb0 [ 75.126245][ T8426] ? memset+0x20/0x40 [ 75.130238][ T8426] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 75.136557][ T8426] ip6gre_newlink_common.constprop.0+0x158/0x410 [ 75.142965][ T8426] ? skb_tunnel_info_txcheck+0x370/0x370 [ 75.148631][ T8426] ip6erspan_newlink+0x280/0x790 [ 75.153651][ T8426] ? gre_rcv+0x1280/0x1280 [ 75.158080][ T8426] __rtnl_newlink+0x1062/0x1710 [ 75.163037][ T8426] ? rtnl_setlink+0x3c0/0x3c0 [ 75.167731][ T8426] ? find_held_lock+0x2d/0x110 [ 75.172592][ T8426] ? is_bpf_text_address+0xa9/0x160 [ 75.177803][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 75.182853][ T8426] ? unwind_next_frame+0xec8/0x1ce0 [ 75.188073][ T8426] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.194359][ T8426] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 75.200105][ T8426] ? is_bpf_text_address+0xcb/0x160 [ 75.205367][ T8426] ? kernel_text_address+0xbd/0xf0 [ 75.210541][ T8426] ? __kernel_text_address+0x9/0x30 [ 75.215826][ T8426] ? unwind_get_return_address+0x51/0x90 [ 75.221468][ T8426] ? create_prof_cpu_mask+0x20/0x20 [ 75.226812][ T8426] ? arch_stack_walk+0x93/0xe0 [ 75.231740][ T8426] ? fs_reclaim_release+0x9c/0xf0 [ 75.231821][ T8426] ? rcu_read_lock_sched_held+0x3a/0x70 [ 75.231857][ T8426] rtnl_newlink+0x64/0xa0 [ 75.231884][ T8426] ? __rtnl_newlink+0x1710/0x1710 [ 75.231910][ T8426] rtnetlink_rcv_msg+0x44e/0xad0 [ 75.257484][ T8426] ? rtnetlink_put_metrics+0x510/0x510 [ 75.263214][ T8426] netlink_rcv_skb+0x153/0x420 [ 75.268001][ T8426] ? rtnetlink_put_metrics+0x510/0x510 [ 75.273548][ T8426] ? netlink_ack+0xaa0/0xaa0 [ 75.278157][ T8426] ? netlink_deliver_tap+0x227/0xba0 [ 75.283580][ T8426] netlink_unicast+0x533/0x7d0 [ 75.288363][ T8426] ? netlink_attachskb+0x870/0x870 [ 75.293546][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.299808][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.306139][ T8426] ? __phys_addr_symbol+0x2c/0x70 [ 75.311185][ T8426] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 75.316958][ T8426] ? __check_object_size+0x171/0x3f0 [ 75.324340][ T8426] netlink_sendmsg+0x856/0xd90 [ 75.329114][ T8426] ? netlink_unicast+0x7d0/0x7d0 [ 75.334097][ T8426] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.340360][ T8426] ? netlink_unicast+0x7d0/0x7d0 [ 75.345421][ T8426] sock_sendmsg+0xcf/0x120 [ 75.349858][ T8426] ____sys_sendmsg+0x6e8/0x810 [ 75.354711][ T8426] ? kernel_sendmsg+0x50/0x50 [ 75.359403][ T8426] ? do_recvmmsg+0x6d0/0x6d0 [ 75.364096][ T8426] ? lock_chain_count+0x20/0x20 [ 75.368965][ T8426] ___sys_sendmsg+0xf3/0x170 [ 75.373618][ T8426] ? sendmsg_copy_msghdr+0x160/0x160 [ 75.378930][ T8426] ? __lock_acquire+0x16a7/0x5230 [ 75.384061][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 75.390107][ T8426] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.396440][ T8426] ? __fget_light+0x215/0x280 [ 75.401159][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.407537][ T8426] __sys_sendmsg+0xe5/0x1b0 [ 75.412141][ T8426] ? __sys_sendmsg_sock+0x30/0x30 [ 75.417187][ T8426] ? __context_tracking_enter+0xef/0x100 [ 75.422910][ T8426] ? syscall_enter_from_user_mode+0x27/0x70 [ 75.428817][ T8426] do_syscall_64+0x2d/0x70 [ 75.433288][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.439350][ T8426] RIP: 0033:0x43f429 [ 75.443350][ T8426] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 75.463266][ T8426] RSP: 002b:00007ffd5dda0cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 75.471768][ T8426] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f429 [ 75.479788][ T8426] RDX: 0000000020001000 RSI: 0000000020000080 RDI: 0000000000000004 [ 75.487912][ T8426] RBP: 0000000000000014 R08: 0000000000000015 R09: 65732f636f72702f [ 75.495991][ T8426] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004033b0 [ 75.504170][ T8426] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 75.512236][ T8426] Kernel panic - not syncing: panic_on_warn set ... [ 75.518819][ T8426] CPU: 1 PID: 8426 Comm: syz-executor556 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0 [ 75.528783][ T8426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.538834][ T8426] Call Trace: [ 75.542111][ T8426] dump_stack+0x141/0x1d7 [ 75.546445][ T8426] panic+0x306/0x73d [ 75.550338][ T8426] ? __warn_printk+0xf3/0xf3 [ 75.554945][ T8426] ? __warn.cold+0x1a/0x44 [ 75.559356][ T8426] ? refcount_warn_saturate+0xbf/0x1e0 [ 75.564811][ T8426] __warn.cold+0x35/0x44 [ 75.569047][ T8426] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.574245][ T8426] ? refcount_warn_saturate+0xbf/0x1e0 [ 75.579700][ T8426] report_bug+0x1bd/0x210 [ 75.584028][ T8426] handle_bug+0x3c/0x60 [ 75.588185][ T8426] exc_invalid_op+0x14/0x40 [ 75.592678][ T8426] asm_exc_invalid_op+0x12/0x20 [ 75.597524][ T8426] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 75.603674][ T8426] Code: 1d 5b 7f e6 09 31 ff 89 de e8 7d b6 a7 fd 84 db 75 e0 e8 c4 af a7 fd 48 c7 c7 60 3e c2 89 c6 05 3b 7f e6 09 01 e8 04 00 fe 04 <0f> 0b eb c4 e8 a8 af a7 fd 0f b6 1d 2a 7f e6 09 31 ff 89 de e8 48 [ 75.623277][ T8426] RSP: 0018:ffffc90000f0ee58 EFLAGS: 00010282 [ 75.629338][ T8426] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.637300][ T8426] RDX: ffff8880190cd580 RSI: ffffffff815c3fd5 RDI: fffff520001e1dbd [ 75.645263][ T8426] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 75.653224][ T8426] R10: ffffffff815bd77e R11: 0000000000000000 R12: dffffc0000000000 [ 75.661188][ T8426] R13: ffffc90000f0efa0 R14: ffff888019af0568 R15: ffff8880126b2e00 [ 75.669156][ T8426] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.674354][ T8426] ? vprintk_func+0x95/0x260 [ 75.678943][ T8426] ? refcount_warn_saturate+0xbf/0x1e0 [ 75.684396][ T8426] unregister_netdevice_many+0x1225/0x1790 [ 75.690204][ T8426] ? net_tx_action+0xbe0/0xbe0 [ 75.694956][ T8426] ? rdma_roce_rescan_device+0x30/0x30 [ 75.700416][ T8426] ? skb_dequeue+0x125/0x180 [ 75.705002][ T8426] unregister_netdevice_queue+0x2dd/0x3c0 [ 75.710717][ T8426] ? unregister_netdevice_many+0x1790/0x1790 [ 75.716699][ T8426] register_netdevice+0x10d6/0x1500 [ 75.721898][ T8426] ? netdev_change_features+0xb0/0xb0 [ 75.727267][ T8426] ? memset+0x20/0x40 [ 75.731245][ T8426] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 75.737485][ T8426] ip6gre_newlink_common.constprop.0+0x158/0x410 [ 75.743808][ T8426] ? skb_tunnel_info_txcheck+0x370/0x370 [ 75.749437][ T8426] ip6erspan_newlink+0x280/0x790 [ 75.754366][ T8426] ? gre_rcv+0x1280/0x1280 [ 75.758773][ T8426] __rtnl_newlink+0x1062/0x1710 [ 75.763657][ T8426] ? rtnl_setlink+0x3c0/0x3c0 [ 75.768327][ T8426] ? find_held_lock+0x2d/0x110 [ 75.773089][ T8426] ? is_bpf_text_address+0xa9/0x160 [ 75.779410][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 75.786512][ T8426] ? unwind_next_frame+0xec8/0x1ce0 [ 75.791704][ T8426] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.797767][ T8426] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 75.803486][ T8426] ? is_bpf_text_address+0xcb/0x160 [ 75.808676][ T8426] ? kernel_text_address+0xbd/0xf0 [ 75.813781][ T8426] ? __kernel_text_address+0x9/0x30 [ 75.818973][ T8426] ? unwind_get_return_address+0x51/0x90 [ 75.824598][ T8426] ? create_prof_cpu_mask+0x20/0x20 [ 75.829789][ T8426] ? arch_stack_walk+0x93/0xe0 [ 75.834592][ T8426] ? fs_reclaim_release+0x9c/0xf0 [ 75.839624][ T8426] ? rcu_read_lock_sched_held+0x3a/0x70 [ 75.845170][ T8426] rtnl_newlink+0x64/0xa0 [ 75.849494][ T8426] ? __rtnl_newlink+0x1710/0x1710 [ 75.854522][ T8426] rtnetlink_rcv_msg+0x44e/0xad0 [ 75.859457][ T8426] ? rtnetlink_put_metrics+0x510/0x510 [ 75.864921][ T8426] netlink_rcv_skb+0x153/0x420 [ 75.869678][ T8426] ? rtnetlink_put_metrics+0x510/0x510 [ 75.875134][ T8426] ? netlink_ack+0xaa0/0xaa0 [ 75.879714][ T8426] ? netlink_deliver_tap+0x227/0xba0 [ 75.885015][ T8426] netlink_unicast+0x533/0x7d0 [ 75.889802][ T8426] ? netlink_attachskb+0x870/0x870 [ 75.894902][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.901158][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.907396][ T8426] ? __phys_addr_symbol+0x2c/0x70 [ 75.912414][ T8426] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 75.918124][ T8426] ? __check_object_size+0x171/0x3f0 [ 75.923405][ T8426] netlink_sendmsg+0x856/0xd90 [ 75.928167][ T8426] ? netlink_unicast+0x7d0/0x7d0 [ 75.933101][ T8426] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.939339][ T8426] ? netlink_unicast+0x7d0/0x7d0 [ 75.944270][ T8426] sock_sendmsg+0xcf/0x120 [ 75.948683][ T8426] ____sys_sendmsg+0x6e8/0x810 [ 75.953474][ T8426] ? kernel_sendmsg+0x50/0x50 [ 75.958145][ T8426] ? do_recvmmsg+0x6d0/0x6d0 [ 75.962732][ T8426] ? lock_chain_count+0x20/0x20 [ 75.967586][ T8426] ___sys_sendmsg+0xf3/0x170 [ 75.972194][ T8426] ? sendmsg_copy_msghdr+0x160/0x160 [ 75.977478][ T8426] ? __lock_acquire+0x16a7/0x5230 [ 75.982504][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 75.988485][ T8426] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.994739][ T8426] ? __fget_light+0x215/0x280 [ 75.999538][ T8426] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 76.005800][ T8426] __sys_sendmsg+0xe5/0x1b0 [ 76.010322][ T8426] ? __sys_sendmsg_sock+0x30/0x30 [ 76.015875][ T8426] ? __context_tracking_enter+0xef/0x100 [ 76.021555][ T8426] ? syscall_enter_from_user_mode+0x27/0x70 [ 76.027471][ T8426] do_syscall_64+0x2d/0x70 [ 76.031883][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 76.037776][ T8426] RIP: 0033:0x43f429 [ 76.041689][ T8426] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 76.061577][ T8426] RSP: 002b:00007ffd5dda0cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.069987][ T8426] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f429 [ 76.077968][ T8426] RDX: 0000000020001000 RSI: 0000000020000080 RDI: 0000000000000004 [ 76.085932][ T8426] RBP: 0000000000000014 R08: 0000000000000015 R09: 65732f636f72702f [ 76.093894][ T8426] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004033b0 [ 76.101866][ T8426] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 76.110755][ T8426] Kernel Offset: disabled [ 76.115173][ T8426] Rebooting in 86400 seconds..