Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.991339][ T8387] netlink: 24 bytes leftover after parsing attributes in process `syz-executor049'. [ 72.009790][ T8387] ------------[ cut here ]------------ [ 72.016997][ T8387] refcount_t: decrement hit 0; leaking memory. [ 72.023585][ T8387] WARNING: CPU: 1 PID: 8387 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 [ 72.043908][ T8387] Modules linked in: [ 72.047836][ T8387] CPU: 1 PID: 8387 Comm: syz-executor049 Not tainted 5.12.0-rc4-syzkaller #0 [ 72.057720][ T8387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.068000][ T8387] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 72.074226][ T8387] Code: 1d 6a 5a e8 09 31 ff 89 de e8 8d 1a ab fd 84 db 75 e0 e8 d4 13 ab fd 48 c7 c7 a0 e1 c1 89 c6 05 4a 5a e8 09 01 e8 2e 36 fb 04 <0f> 0b eb c4 e8 b8 13 ab fd 0f b6 1d 39 5a e8 09 31 ff 89 de e8 58 [ 72.093921][ T8387] RSP: 0018:ffffc9000bbb6fd0 EFLAGS: 00010282 [ 72.100020][ T8387] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.108076][ T8387] RDX: ffff888014eb9c40 RSI: ffffffff815c51f5 RDI: fffff52001776dec [ 72.116162][ T8387] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 72.124212][ T8387] R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff888018678568 [ 72.132190][ T8387] R13: ffff888018678c00 R14: ffff888148200000 R15: ffffffff8d659b80 [ 72.140263][ T8387] FS: 000000000103b300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 72.149374][ T8387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.156044][ T8387] CR2: 00005585664d3188 CR3: 000000001ce2c000 CR4: 00000000001506e0 [ 72.164095][ T8387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.172763][ T8387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.180902][ T8387] Call Trace: [ 72.184240][ T8387] ip6gre_tunnel_uninit+0x3d7/0x440 [ 72.189448][ T8387] ? ip6erspan_tunnel_uninit+0x3f0/0x3f0 [ 72.195158][ T8387] register_netdevice+0xadf/0x1500 [ 72.200405][ T8387] ? netdev_change_features+0xb0/0xb0 [ 72.205837][ T8387] ? memset+0x20/0x40 [ 72.209834][ T8387] ip6gre_newlink_common.constprop.0+0x158/0x410 [ 72.216241][ T8387] ? skb_tunnel_info_txcheck+0x370/0x370 [ 72.221888][ T8387] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.228189][ T8387] ? ip6gre_tunnel_find+0x483/0x640 [ 72.233405][ T8387] ip6gre_newlink+0x275/0x7a0 [ 72.238173][ T8387] ? ip6erspan_newlink+0x790/0x790 [ 72.243310][ T8387] __rtnl_newlink+0x1062/0x1710 [ 72.248238][ T8387] ? rtnl_setlink+0x3c0/0x3c0 [ 72.252929][ T8387] ? find_held_lock+0x2d/0x110 [ 72.257782][ T8387] ? is_bpf_text_address+0xa9/0x160 [ 72.262999][ T8387] ? lock_downgrade+0x6e0/0x6e0 [ 72.267945][ T8387] ? unwind_next_frame+0xec8/0x1ce0 [ 72.273161][ T8387] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.279391][ T8387] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.285235][ T8387] ? is_bpf_text_address+0xcb/0x160 [ 72.290447][ T8387] ? kernel_text_address+0xbd/0xf0 [ 72.295629][ T8387] ? __kernel_text_address+0x9/0x30 [ 72.300840][ T8387] ? unwind_get_return_address+0x51/0x90 [ 72.306519][ T8387] ? create_prof_cpu_mask+0x20/0x20 [ 72.311729][ T8387] ? arch_stack_walk+0x93/0xe0 [ 72.316624][ T8387] ? fs_reclaim_release+0x9c/0xe0 [ 72.321674][ T8387] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.327276][ T8387] rtnl_newlink+0x64/0xa0 [ 72.331629][ T8387] ? __rtnl_newlink+0x1710/0x1710 [ 72.336796][ T8387] rtnetlink_rcv_msg+0x44e/0xad0 [ 72.341761][ T8387] ? rtnetlink_put_metrics+0x510/0x510 [ 72.347375][ T8387] netlink_rcv_skb+0x153/0x420 [ 72.352157][ T8387] ? rtnetlink_put_metrics+0x510/0x510 [ 72.357709][ T8387] ? netlink_ack+0xaa0/0xaa0 [ 72.362308][ T8387] ? netlink_deliver_tap+0x227/0xba0 [ 72.367660][ T8387] netlink_unicast+0x533/0x7d0 [ 72.372439][ T8387] ? netlink_attachskb+0x870/0x870 [ 72.377643][ T8387] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.383981][ T8387] ? __phys_addr_symbol+0x2c/0x70 [ 72.389027][ T8387] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.394968][ T8387] ? __check_object_size+0x171/0x3f0 [ 72.400268][ T8387] netlink_sendmsg+0x856/0xd90 [ 72.405102][ T8387] ? netlink_unicast+0x7d0/0x7d0 [ 72.410076][ T8387] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.416408][ T8387] ? netlink_unicast+0x7d0/0x7d0 [ 72.421367][ T8387] sock_sendmsg+0xcf/0x120 [ 72.425853][ T8387] ____sys_sendmsg+0x6e8/0x810 [ 72.430647][ T8387] ? kernel_sendmsg+0x50/0x50 [ 72.435509][ T8387] ? do_recvmmsg+0x6d0/0x6d0 [ 72.440115][ T8387] ? lock_chain_count+0x20/0x20 [ 72.445025][ T8387] ___sys_sendmsg+0xf3/0x170 [ 72.449720][ T8387] ? sendmsg_copy_msghdr+0x160/0x160 [ 72.455079][ T8387] ? __lock_acquire+0x16b3/0x54c0 [ 72.460129][ T8387] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.466211][ T8387] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.472556][ T8387] ? __fget_light+0x215/0x280 [ 72.477318][ T8387] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.483577][ T8387] __sys_sendmsg+0xe5/0x1b0 [ 72.488184][ T8387] ? __sys_sendmsg_sock+0x30/0x30 [ 72.493236][ T8387] ? syscall_enter_from_user_mode+0x27/0x70 [ 72.499228][ T8387] do_syscall_64+0x2d/0x70 [ 72.503737][ T8387] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.509649][ T8387] RIP: 0033:0x43f2a9 [ 72.513546][ T8387] 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 [ 72.533461][ T8387] RSP: 002b:00007ffdd0e5af28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.541961][ T8387] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f2a9 [ 72.550037][ T8387] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 72.558110][ T8387] RBP: 0000000000403290 R08: 0000000000000070 R09: 0000000000400488 [ 72.566352][ T8387] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000403320 [ 72.574393][ T8387] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 72.582385][ T8387] Kernel panic - not syncing: panic_on_warn set ... [ 72.588950][ T8387] CPU: 1 PID: 8387 Comm: syz-executor049 Not tainted 5.12.0-rc4-syzkaller #0 [ 72.597692][ T8387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.607731][ T8387] Call Trace: [ 72.610997][ T8387] dump_stack+0x141/0x1d7 [ 72.615321][ T8387] panic+0x306/0x73d [ 72.619231][ T8387] ? __warn_printk+0xf3/0xf3 [ 72.623810][ T8387] ? __warn.cold+0x1a/0x44 [ 72.628230][ T8387] ? refcount_warn_saturate+0xbf/0x1e0 [ 72.633679][ T8387] __warn.cold+0x35/0x44 [ 72.637906][ T8387] ? refcount_warn_saturate+0xbf/0x1e0 [ 72.643352][ T8387] report_bug+0x1bd/0x210 [ 72.647673][ T8387] handle_bug+0x3c/0x60 [ 72.651816][ T8387] exc_invalid_op+0x14/0x40 [ 72.656311][ T8387] asm_exc_invalid_op+0x12/0x20 [ 72.661152][ T8387] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 72.667205][ T8387] Code: 1d 6a 5a e8 09 31 ff 89 de e8 8d 1a ab fd 84 db 75 e0 e8 d4 13 ab fd 48 c7 c7 a0 e1 c1 89 c6 05 4a 5a e8 09 01 e8 2e 36 fb 04 <0f> 0b eb c4 e8 b8 13 ab fd 0f b6 1d 39 5a e8 09 31 ff 89 de e8 58 [ 72.686884][ T8387] RSP: 0018:ffffc9000bbb6fd0 EFLAGS: 00010282 [ 72.692937][ T8387] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.700908][ T8387] RDX: ffff888014eb9c40 RSI: ffffffff815c51f5 RDI: fffff52001776dec [ 72.708865][ T8387] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 72.716820][ T8387] R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff888018678568 [ 72.724792][ T8387] R13: ffff888018678c00 R14: ffff888148200000 R15: ffffffff8d659b80 [ 72.732751][ T8387] ? wake_up_klogd.part.0+0x8e/0xd0 [ 72.737941][ T8387] ? vprintk_func+0x95/0x1e0 [ 72.742520][ T8387] ip6gre_tunnel_uninit+0x3d7/0x440 [ 72.747704][ T8387] ? ip6erspan_tunnel_uninit+0x3f0/0x3f0 [ 72.753335][ T8387] register_netdevice+0xadf/0x1500 [ 72.758443][ T8387] ? netdev_change_features+0xb0/0xb0 [ 72.763803][ T8387] ? memset+0x20/0x40 [ 72.767775][ T8387] ip6gre_newlink_common.constprop.0+0x158/0x410 [ 72.774190][ T8387] ? skb_tunnel_info_txcheck+0x370/0x370 [ 72.779807][ T8387] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.786049][ T8387] ? ip6gre_tunnel_find+0x483/0x640 [ 72.791239][ T8387] ip6gre_newlink+0x275/0x7a0 [ 72.795902][ T8387] ? ip6erspan_newlink+0x790/0x790 [ 72.801015][ T8387] __rtnl_newlink+0x1062/0x1710 [ 72.805861][ T8387] ? rtnl_setlink+0x3c0/0x3c0 [ 72.810538][ T8387] ? find_held_lock+0x2d/0x110 [ 72.815312][ T8387] ? is_bpf_text_address+0xa9/0x160 [ 72.820511][ T8387] ? lock_downgrade+0x6e0/0x6e0 [ 72.825346][ T8387] ? unwind_next_frame+0xec8/0x1ce0 [ 72.830532][ T8387] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.836587][ T8387] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.842298][ T8387] ? is_bpf_text_address+0xcb/0x160 [ 72.847497][ T8387] ? kernel_text_address+0xbd/0xf0 [ 72.852594][ T8387] ? __kernel_text_address+0x9/0x30 [ 72.857777][ T8387] ? unwind_get_return_address+0x51/0x90 [ 72.863418][ T8387] ? create_prof_cpu_mask+0x20/0x20 [ 72.868618][ T8387] ? arch_stack_walk+0x93/0xe0 [ 72.873401][ T8387] ? fs_reclaim_release+0x9c/0xe0 [ 72.878420][ T8387] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.883973][ T8387] rtnl_newlink+0x64/0xa0 [ 72.888291][ T8387] ? __rtnl_newlink+0x1710/0x1710 [ 72.893304][ T8387] rtnetlink_rcv_msg+0x44e/0xad0 [ 72.898242][ T8387] ? rtnetlink_put_metrics+0x510/0x510 [ 72.903704][ T8387] netlink_rcv_skb+0x153/0x420 [ 72.908541][ T8387] ? rtnetlink_put_metrics+0x510/0x510 [ 72.913987][ T8387] ? netlink_ack+0xaa0/0xaa0 [ 72.918560][ T8387] ? netlink_deliver_tap+0x227/0xba0 [ 72.923853][ T8387] netlink_unicast+0x533/0x7d0 [ 72.928605][ T8387] ? netlink_attachskb+0x870/0x870 [ 72.933700][ T8387] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.940151][ T8387] ? __phys_addr_symbol+0x2c/0x70 [ 72.945306][ T8387] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.951016][ T8387] ? __check_object_size+0x171/0x3f0 [ 72.956290][ T8387] netlink_sendmsg+0x856/0xd90 [ 72.961047][ T8387] ? netlink_unicast+0x7d0/0x7d0 [ 72.965974][ T8387] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.972203][ T8387] ? netlink_unicast+0x7d0/0x7d0 [ 72.977141][ T8387] sock_sendmsg+0xcf/0x120 [ 72.981563][ T8387] ____sys_sendmsg+0x6e8/0x810 [ 72.986331][ T8387] ? kernel_sendmsg+0x50/0x50 [ 72.990994][ T8387] ? do_recvmmsg+0x6d0/0x6d0 [ 72.995678][ T8387] ? lock_chain_count+0x20/0x20 [ 73.000620][ T8387] ___sys_sendmsg+0xf3/0x170 [ 73.005195][ T8387] ? sendmsg_copy_msghdr+0x160/0x160 [ 73.010465][ T8387] ? __lock_acquire+0x16b3/0x54c0 [ 73.015498][ T8387] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.021471][ T8387] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.027698][ T8387] ? __fget_light+0x215/0x280 [ 73.032379][ T8387] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.038608][ T8387] __sys_sendmsg+0xe5/0x1b0 [ 73.043097][ T8387] ? __sys_sendmsg_sock+0x30/0x30 [ 73.048112][ T8387] ? syscall_enter_from_user_mode+0x27/0x70 [ 73.053996][ T8387] do_syscall_64+0x2d/0x70 [ 73.058410][ T8387] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.064291][ T8387] RIP: 0033:0x43f2a9 [ 73.068168][ T8387] 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 [ 73.087756][ T8387] RSP: 002b:00007ffdd0e5af28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.096153][ T8387] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f2a9 [ 73.104109][ T8387] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 73.112064][ T8387] RBP: 0000000000403290 R08: 0000000000000070 R09: 0000000000400488 [ 73.120017][ T8387] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000403320 [ 73.127971][ T8387] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 73.136706][ T8387] Kernel Offset: disabled [ 73.141124][ T8387] Rebooting in 86400 seconds..