[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 508.708412] kasan: CONFIG_KASAN_INLINE enabled [ 508.714393] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 508.723364] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 508.729618] CPU: 1 PID: 6463 Comm: syz-executor966 Not tainted 4.19.114-syzkaller #0 [ 508.737483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 508.746899] RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 [ 508.751821] Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b [ 508.770715] RSP: 0018:ffff888085566d20 EFLAGS: 00010a02 [ 508.776066] RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d [ 508.783511] RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001 [ 508.790807] RBP: 0000000000000000 R08: ffff8880a4ed4380 R09: 0000000000000000 [ 508.798063] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 508.805320] R13: ffff8880a5249508 R14: ffff888085566e40 R15: ffff88809670a480 [ 508.812585] FS: 00007fe360518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 508.820800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 508.826666] CR2: 000055ca82aee920 CR3: 0000000090b4e000 CR4: 00000000001406e0 [ 508.833924] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 508.841180] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 508.848530] Call Trace: [ 508.851124] __vxlan_dev_create+0x48d/0x840 [ 508.855448] ? vxlan_changelink+0x740/0x740 [ 508.859755] ? vxlan_setup+0x440/0x440 [ 508.863642] ? kmem_cache_alloc_node_trace+0x34d/0x750 [ 508.869092] vxlan_newlink+0xc0/0x120 [ 508.872904] ? __vxlan_dev_create+0x840/0x840 [ 508.877388] ? memset+0x20/0x40 [ 508.880735] ? rtnl_create_link+0x145/0xa30 [ 508.885052] ? __vxlan_dev_create+0x840/0x840 [ 508.889532] rtnl_newlink+0xf03/0x1440 [ 508.893406] ? rtnl_link_unregister+0x230/0x230 [ 508.898065] ? deref_stack_reg+0xaa/0xe0 [ 508.902153] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 508.908076] ? lock_downgrade+0x740/0x740 [ 508.912218] ? unwind_next_frame+0xd01/0x18a0 [ 508.916780] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 508.922248] ? bpf_prog_kallsyms_find+0x4d/0x2a0 [ 508.927073] ? check_preemption_disabled+0x41/0x280 [ 508.932090] ? is_bpf_text_address+0xd0/0x160 [ 508.936575] ? kernel_text_address+0x6e/0xe0 [ 508.940979] ? __kernel_text_address+0x9/0x30 [ 508.945482] ? unwind_get_return_address+0x5a/0xa0 [ 508.950399] ? __save_stack_trace+0x8a/0xf0 [ 508.954733] ? mark_held_locks+0xf0/0xf0 [ 508.958782] ? lock_downgrade+0x740/0x740 [ 508.962966] ? mutex_trylock+0x1a0/0x1a0 [ 508.967018] ? find_held_lock+0x2d/0x110 [ 508.971066] ? rtnetlink_rcv_msg+0x3c3/0xaf0 [ 508.977031] ? rtnl_link_unregister+0x230/0x230 [ 508.984021] rtnetlink_rcv_msg+0x453/0xaf0 [ 508.991848] ? rtnetlink_put_metrics+0x520/0x520 [ 509.000981] ? find_held_lock+0x2d/0x110 [ 509.006472] netlink_rcv_skb+0x160/0x410 [ 509.011241] ? rtnetlink_put_metrics+0x520/0x520 [ 509.018625] ? netlink_ack+0xa60/0xa60 [ 509.024150] netlink_unicast+0x4d7/0x6a0 [ 509.028534] ? netlink_attachskb+0x710/0x710 [ 509.034090] netlink_sendmsg+0x80b/0xcd0 [ 509.039892] ? netlink_unicast+0x6a0/0x6a0 [ 509.044987] ? netlink_unicast+0x6a0/0x6a0 [ 509.050013] sock_sendmsg+0xcf/0x120 [ 509.054013] sock_no_sendpage+0xf8/0x140 [ 509.058213] ? sock_kzfree_s+0x60/0x60 [ 509.065934] ? lock_downgrade+0x740/0x740 [ 509.071014] ? pipe_lock+0x63/0x80 [ 509.075001] ? lock_acquire+0x170/0x400 [ 509.079128] ? pipe_lock+0x63/0x80 [ 509.082696] ? sock_kzfree_s+0x60/0x60 [ 509.086730] kernel_sendpage+0x82/0xd0 [ 509.090885] sock_sendpage+0x84/0xa0 [ 509.094959] pipe_to_sendpage+0x263/0x320 [ 509.099161] ? kernel_sendpage+0xd0/0xd0 [ 509.103318] ? direct_splice_actor+0x160/0x160 [ 509.108531] ? splice_from_pipe_next.part.0+0x24f/0x2f0 [ 509.114366] __splice_from_pipe+0x38f/0x7a0 [ 509.118895] ? direct_splice_actor+0x160/0x160 [ 509.123882] ? direct_splice_actor+0x160/0x160 [ 509.128669] splice_from_pipe+0xd9/0x140 [ 509.132894] ? splice_shrink_spd+0xc0/0xc0 [ 509.137239] ? security_file_permission+0x84/0x220 [ 509.142534] ? splice_from_pipe+0x140/0x140 [ 509.147358] do_splice+0x5ea/0x1250 [ 509.151410] ? iterate_fd+0x350/0x350 [ 509.155437] ? opipe_prep.part.0+0x2c0/0x2c0 [ 509.160342] ? find_held_lock+0x2d/0x110 [ 509.164680] __x64_sys_splice+0x2b5/0x320 [ 509.169171] do_syscall_64+0xf9/0x620 [ 509.173142] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.179479] RIP: 0033:0x44a319 [ 509.182794] Code: 7d d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 4b d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 509.203288] RSP: 002b:00007fe360517cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 509.215298] RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 000000000044a319 [ 509.226316] RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 [ 509.233784] RBP: 00000000006dbc50 R08: 000000000004ffe2 R09: 0000000000000000 [ 509.241579] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c [ 509.248834] R13: 00007fff8cc6cd6f R14: 00007fe3605189c0 R15: 20c49ba5e353f7cf [ 509.256451] Modules linked in: [ 509.261304] ---[ end trace abe2eae1c21c0ee4 ]--- [ 509.266207] RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 [ 509.271726] Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b [ 509.291701] RSP: 0018:ffff888085566d20 EFLAGS: 00010a02 [ 509.297693] RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d [ 509.305359] RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001 [ 509.313181] RBP: 0000000000000000 R08: ffff8880a4ed4380 R09: 0000000000000000 [ 509.320531] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 509.328023] R13: ffff8880a5249508 R14: ffff888085566e40 R15: ffff88809670a480 [ 509.335633] FS: 00007fe360518700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 509.344163] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 509.350313] CR2: 00007fe360517db8 CR3: 0000000090b4e000 CR4: 00000000001406f0 [ 509.359171] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 509.367027] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 509.375302] Kernel panic - not syncing: Fatal exception [ 509.382236] Kernel Offset: disabled [ 509.386187] Rebooting in 86400 seconds..