Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 68.545190][ T8403] netlink: 8 bytes leftover after parsing attributes in process `syz-executor530'. [ 68.566191][ T8409] netlink: 8 bytes leftover after parsing attributes in process `syz-executor530'. [ 68.577116][ T8409] ------------[ cut here ]------------ [ 68.582683][ T8409] refcount_t: decrement hit 0; leaking memory. [ 68.589466][ T8409] WARNING: CPU: 1 PID: 8409 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 [ 68.599735][ T8409] Modules linked in: [ 68.603759][ T8409] CPU: 1 PID: 8409 Comm: syz-executor530 Not tainted 5.12.0-rc4-syzkaller #0 [ 68.613350][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.623866][ T8409] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 68.630080][ T8409] 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 [ 68.649792][ T8409] RSP: 0018:ffffc90009cfefa0 EFLAGS: 00010282 [ 68.655868][ T8409] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.663903][ T8409] RDX: ffff88801b863880 RSI: ffffffff815c51f5 RDI: fffff5200139fde6 [ 68.671999][ T8409] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 68.680063][ T8409] R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff88801872a568 [ 68.688148][ T8409] R13: ffff888147c0b000 R14: 00000000ffffffff R15: ffffffff8d659b80 [ 68.696133][ T8409] FS: 00000000010e7300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 68.705197][ T8409] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.711995][ T8409] CR2: 0000000020000380 CR3: 000000002195d000 CR4: 00000000001506e0 [ 68.721022][ T8409] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.729316][ T8409] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.737433][ T8409] Call Trace: [ 68.740740][ T8409] ipip6_tunnel_uninit+0x389/0x3f0 [ 68.745949][ T8409] ? ipip6_dellink+0x2d0/0x2d0 [ 68.750834][ T8409] register_netdevice+0xadf/0x1500 [ 68.755972][ T8409] ? netdev_change_features+0xb0/0xb0 [ 68.761426][ T8409] ipip6_tunnel_create+0x29e/0x4e0 [ 68.766594][ T8409] ipip6_newlink+0x137/0x370 [ 68.771348][ T8409] ? ipip6_changelink+0x5b0/0x5b0 [ 68.776398][ T8409] ? alloc_netdev_mqs+0xade/0xe80 [ 68.781539][ T8409] ? rtnl_create_link+0x746/0xae0 [ 68.786591][ T8409] ? ipip6_changelink+0x5b0/0x5b0 [ 68.791933][ T8409] __rtnl_newlink+0x1062/0x1710 [ 68.796972][ T8409] ? rtnl_setlink+0x3c0/0x3c0 [ 68.801675][ T8409] ? find_held_lock+0x2d/0x110 [ 68.806439][ T8409] ? is_bpf_text_address+0xa9/0x160 [ 68.811778][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 68.816655][ T8409] ? unwind_next_frame+0xec8/0x1ce0 [ 68.821956][ T8409] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 68.828169][ T8409] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 68.833909][ T8409] ? is_bpf_text_address+0xcb/0x160 [ 68.839183][ T8409] ? kernel_text_address+0xbd/0xf0 [ 68.844312][ T8409] ? __kernel_text_address+0x9/0x30 [ 68.849612][ T8409] ? unwind_get_return_address+0x51/0x90 [ 68.855263][ T8409] ? create_prof_cpu_mask+0x20/0x20 [ 68.860544][ T8409] ? arch_stack_walk+0x93/0xe0 [ 68.865375][ T8409] ? fs_reclaim_release+0x9c/0xe0 [ 68.870526][ T8409] ? rcu_read_lock_sched_held+0x3a/0x70 [ 68.876450][ T8409] rtnl_newlink+0x64/0xa0 [ 68.880855][ T8409] ? __rtnl_newlink+0x1710/0x1710 [ 68.885983][ T8409] rtnetlink_rcv_msg+0x44e/0xad0 [ 68.891016][ T8409] ? rtnetlink_put_metrics+0x510/0x510 [ 68.896498][ T8409] netlink_rcv_skb+0x153/0x420 [ 68.901328][ T8409] ? rtnetlink_put_metrics+0x510/0x510 [ 68.906945][ T8409] ? netlink_ack+0xaa0/0xaa0 [ 68.911535][ T8409] ? netlink_deliver_tap+0x227/0xba0 [ 68.916886][ T8409] netlink_unicast+0x533/0x7d0 [ 68.921672][ T8409] ? netlink_attachskb+0x870/0x870 [ 68.926893][ T8409] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 68.933157][ T8409] ? __phys_addr_symbol+0x2c/0x70 [ 68.938252][ T8409] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 68.944315][ T8409] ? __check_object_size+0x171/0x3f0 [ 68.949777][ T8409] netlink_sendmsg+0x856/0xd90 [ 68.954578][ T8409] ? netlink_unicast+0x7d0/0x7d0 [ 68.959623][ T8409] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 68.965889][ T8409] ? netlink_unicast+0x7d0/0x7d0 [ 68.970944][ T8409] sock_sendmsg+0xcf/0x120 [ 68.975378][ T8409] ____sys_sendmsg+0x6e8/0x810 [ 68.980248][ T8409] ? kernel_sendmsg+0x50/0x50 [ 68.984937][ T8409] ? do_recvmmsg+0x6d0/0x6d0 [ 68.989628][ T8409] ? lock_chain_count+0x20/0x20 [ 68.994499][ T8409] ___sys_sendmsg+0xf3/0x170 [ 68.999356][ T8409] ? sendmsg_copy_msghdr+0x160/0x160 [ 69.004671][ T8409] ? __lock_acquire+0x16b3/0x54c0 [ 69.009832][ T8409] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.015843][ T8409] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.022192][ T8409] ? __fget_light+0x215/0x280 [ 69.027007][ T8409] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.033260][ T8409] __sys_sendmsg+0xe5/0x1b0 [ 69.037821][ T8409] ? __sys_sendmsg_sock+0x30/0x30 [ 69.042875][ T8409] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.048896][ T8409] do_syscall_64+0x2d/0x70 [ 69.053352][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.059309][ T8409] RIP: 0033:0x43fd09 [ 69.063216][ T8409] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 69.082963][ T8409] RSP: 002b:00007ffcb40d9f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.091479][ T8409] RAX: ffffffffffffffda RBX: 0000000000010bc2 RCX: 000000000043fd09 [ 69.099534][ T8409] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 69.107611][ T8409] RBP: 0000000000000000 R08: 00007ffcb40da0a8 R09: 00007ffcb40da0a8 [ 69.115600][ T8409] R10: 00007ffcb40da0a8 R11: 0000000000000246 R12: 00007ffcb40d9f1c [ 69.123687][ T8409] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 69.131753][ T8409] Kernel panic - not syncing: panic_on_warn set ... [ 69.138332][ T8409] CPU: 1 PID: 8409 Comm: syz-executor530 Not tainted 5.12.0-rc4-syzkaller #0 [ 69.147166][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.157243][ T8409] Call Trace: [ 69.160519][ T8409] dump_stack+0x141/0x1d7 [ 69.164844][ T8409] panic+0x306/0x73d [ 69.168762][ T8409] ? __warn_printk+0xf3/0xf3 [ 69.173365][ T8409] ? __warn.cold+0x1a/0x44 [ 69.177781][ T8409] ? refcount_warn_saturate+0xbf/0x1e0 [ 69.183229][ T8409] __warn.cold+0x35/0x44 [ 69.187460][ T8409] ? refcount_warn_saturate+0xbf/0x1e0 [ 69.192914][ T8409] report_bug+0x1bd/0x210 [ 69.197255][ T8409] handle_bug+0x3c/0x60 [ 69.201415][ T8409] exc_invalid_op+0x14/0x40 [ 69.205907][ T8409] asm_exc_invalid_op+0x12/0x20 [ 69.210749][ T8409] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 69.216810][ T8409] 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 [ 69.236406][ T8409] RSP: 0018:ffffc90009cfefa0 EFLAGS: 00010282 [ 69.242464][ T8409] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 69.250424][ T8409] RDX: ffff88801b863880 RSI: ffffffff815c51f5 RDI: fffff5200139fde6 [ 69.258389][ T8409] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 69.266347][ T8409] R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff88801872a568 [ 69.274309][ T8409] R13: ffff888147c0b000 R14: 00000000ffffffff R15: ffffffff8d659b80 [ 69.282276][ T8409] ? wake_up_klogd.part.0+0x8e/0xd0 [ 69.287471][ T8409] ? vprintk_func+0x95/0x1e0 [ 69.292052][ T8409] ipip6_tunnel_uninit+0x389/0x3f0 [ 69.297159][ T8409] ? ipip6_dellink+0x2d0/0x2d0 [ 69.301921][ T8409] register_netdevice+0xadf/0x1500 [ 69.307038][ T8409] ? netdev_change_features+0xb0/0xb0 [ 69.312415][ T8409] ipip6_tunnel_create+0x29e/0x4e0 [ 69.317524][ T8409] ipip6_newlink+0x137/0x370 [ 69.322114][ T8409] ? ipip6_changelink+0x5b0/0x5b0 [ 69.327132][ T8409] ? alloc_netdev_mqs+0xade/0xe80 [ 69.332283][ T8409] ? rtnl_create_link+0x746/0xae0 [ 69.337304][ T8409] ? ipip6_changelink+0x5b0/0x5b0 [ 69.342321][ T8409] __rtnl_newlink+0x1062/0x1710 [ 69.347182][ T8409] ? rtnl_setlink+0x3c0/0x3c0 [ 69.351905][ T8409] ? find_held_lock+0x2d/0x110 [ 69.356673][ T8409] ? is_bpf_text_address+0xa9/0x160 [ 69.361865][ T8409] ? lock_downgrade+0x6e0/0x6e0 [ 69.366713][ T8409] ? unwind_next_frame+0xec8/0x1ce0 [ 69.371922][ T8409] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.377987][ T8409] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 69.383708][ T8409] ? is_bpf_text_address+0xcb/0x160 [ 69.388905][ T8409] ? kernel_text_address+0xbd/0xf0 [ 69.394014][ T8409] ? __kernel_text_address+0x9/0x30 [ 69.399206][ T8409] ? unwind_get_return_address+0x51/0x90 [ 69.404832][ T8409] ? create_prof_cpu_mask+0x20/0x20 [ 69.410021][ T8409] ? arch_stack_walk+0x93/0xe0 [ 69.414809][ T8409] ? fs_reclaim_release+0x9c/0xe0 [ 69.419834][ T8409] ? rcu_read_lock_sched_held+0x3a/0x70 [ 69.425375][ T8409] rtnl_newlink+0x64/0xa0 [ 69.429707][ T8409] ? __rtnl_newlink+0x1710/0x1710 [ 69.434728][ T8409] rtnetlink_rcv_msg+0x44e/0xad0 [ 69.439672][ T8409] ? rtnetlink_put_metrics+0x510/0x510 [ 69.445136][ T8409] netlink_rcv_skb+0x153/0x420 [ 69.449905][ T8409] ? rtnetlink_put_metrics+0x510/0x510 [ 69.455403][ T8409] ? netlink_ack+0xaa0/0xaa0 [ 69.459981][ T8409] ? netlink_deliver_tap+0x227/0xba0 [ 69.465263][ T8409] netlink_unicast+0x533/0x7d0 [ 69.470021][ T8409] ? netlink_attachskb+0x870/0x870 [ 69.475194][ T8409] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.481435][ T8409] ? __phys_addr_symbol+0x2c/0x70 [ 69.486468][ T8409] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 69.492181][ T8409] ? __check_object_size+0x171/0x3f0 [ 69.497475][ T8409] netlink_sendmsg+0x856/0xd90 [ 69.502232][ T8409] ? netlink_unicast+0x7d0/0x7d0 [ 69.507181][ T8409] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.513414][ T8409] ? netlink_unicast+0x7d0/0x7d0 [ 69.518358][ T8409] sock_sendmsg+0xcf/0x120 [ 69.522782][ T8409] ____sys_sendmsg+0x6e8/0x810 [ 69.527539][ T8409] ? kernel_sendmsg+0x50/0x50 [ 69.532204][ T8409] ? do_recvmmsg+0x6d0/0x6d0 [ 69.536785][ T8409] ? lock_chain_count+0x20/0x20 [ 69.541632][ T8409] ___sys_sendmsg+0xf3/0x170 [ 69.546215][ T8409] ? sendmsg_copy_msghdr+0x160/0x160 [ 69.551489][ T8409] ? __lock_acquire+0x16b3/0x54c0 [ 69.556511][ T8409] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.562487][ T8409] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 69.568717][ T8409] ? __fget_light+0x215/0x280 [ 69.573388][ T8409] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 69.579618][ T8409] __sys_sendmsg+0xe5/0x1b0 [ 69.584127][ T8409] ? __sys_sendmsg_sock+0x30/0x30 [ 69.589168][ T8409] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.595113][ T8409] do_syscall_64+0x2d/0x70 [ 69.599638][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.605543][ T8409] RIP: 0033:0x43fd09 [ 69.609427][ T8409] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 69.629028][ T8409] RSP: 002b:00007ffcb40d9f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.637434][ T8409] RAX: ffffffffffffffda RBX: 0000000000010bc2 RCX: 000000000043fd09 [ 69.645394][ T8409] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 69.653393][ T8409] RBP: 0000000000000000 R08: 00007ffcb40da0a8 R09: 00007ffcb40da0a8 [ 69.661361][ T8409] R10: 00007ffcb40da0a8 R11: 0000000000000246 R12: 00007ffcb40d9f1c [ 69.669336][ T8409] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 69.679187][ T8409] Kernel Offset: disabled [ 69.683630][ T8409] Rebooting in 86400 seconds..