Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.127111] audit: type=1400 audit(1587595368.861:8): avc: denied { execmem } for pid=6345 comm="syz-executor814" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.202664] kasan: CONFIG_KASAN_INLINE enabled [ 34.207387] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.216164] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.222398] Modules linked in: [ 34.225570] CPU: 1 PID: 6360 Comm: syz-executor814 Not tainted 4.14.176-syzkaller #0 [ 34.233429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.242770] task: ffff88809859e440 task.stack: ffff8880975a8000 [ 34.248805] RIP: 0010:vxlan_fdb_destroy+0xa3/0x1b0 [ 34.253820] RSP: 0018:ffff8880975af128 EFLAGS: 00010a02 [ 34.259167] RAX: dffffc0000000000 RBX: ffff888098bab280 RCX: 1ffff11012eb5e1b [ 34.267464] RDX: 1bd5a00000000040 RSI: ffff888098bab280 RDI: ffff888097b15540 [ 34.274710] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 34.281962] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 34.289220] R13: ffff888098bab288 R14: ffff8880975af228 R15: ffff888097b15400 [ 34.296481] FS: 00007fa997a49700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 34.304681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.310549] CR2: 00007fa997a48e78 CR3: 00000000a4365000 CR4: 00000000001406e0 [ 34.317796] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.325042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.332391] Call Trace: [ 34.334970] __vxlan_dev_create+0x3bc/0x710 [ 34.339277] ? vxlan_nl2conf+0x1137/0x22a0 [ 34.343496] ? vxlan_changelink+0x660/0x660 [ 34.347799] ? vxlan_setup+0x4a0/0x4a0 [ 34.351663] ? kasan_unpoison_shadow+0x30/0x40 [ 34.356219] ? kasan_kmalloc+0xbf/0xe0 [ 34.360083] vxlan_newlink+0xa3/0xe0 [ 34.363823] ? __vxlan_dev_create+0x710/0x710 [ 34.368437] ? kvmalloc_node+0x4e/0xd0 [ 34.372303] ? rtnl_create_link+0x129/0x880 [ 34.376598] rtnl_newlink+0xecb/0x1720 [ 34.380482] ? __vxlan_dev_create+0x710/0x710 [ 34.384986] ? rtnl_link_unregister+0x1f0/0x1f0 [ 34.389683] ? lock_acquire+0x170/0x3f0 [ 34.393677] ? lock_acquire+0x170/0x3f0 [ 34.397631] ? __lock_is_held+0xad/0x140 [ 34.401668] ? lock_downgrade+0x6e0/0x6e0 [ 34.405799] ? rtnl_link_unregister+0x1f0/0x1f0 [ 34.410458] rtnetlink_rcv_msg+0x3be/0xb10 [ 34.414688] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 34.419245] ? save_trace+0x290/0x290 [ 34.423032] ? save_trace+0x290/0x290 [ 34.426808] netlink_rcv_skb+0x127/0x370 [ 34.430863] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 34.435423] ? netlink_ack+0x980/0x980 [ 34.439302] netlink_unicast+0x437/0x620 [ 34.443601] ? netlink_attachskb+0x600/0x600 [ 34.448000] netlink_sendmsg+0x733/0xbe0 [ 34.452036] ? netlink_unicast+0x620/0x620 [ 34.456271] ? __lock_is_held+0xad/0x140 [ 34.460321] ? security_socket_sendmsg+0x83/0xb0 [ 34.465053] ? netlink_unicast+0x620/0x620 [ 34.469261] sock_sendmsg+0xc5/0x100 [ 34.472964] sock_no_sendpage+0xe5/0x110 [ 34.477010] ? sock_kzfree_s+0x50/0x50 [ 34.480874] ? sock_kzfree_s+0x50/0x50 [ 34.484749] kernel_sendpage+0x82/0xd0 [ 34.489310] sock_sendpage+0x84/0xa0 [ 34.492999] pipe_to_sendpage+0x226/0x2d0 [ 34.497120] ? kernel_sendpage+0xd0/0xd0 [ 34.501175] ? direct_splice_actor+0x160/0x160 [ 34.505738] ? splice_from_pipe_next.part.0+0x1e4/0x290 [ 34.511080] __splice_from_pipe+0x332/0x740 [ 34.515401] ? direct_splice_actor+0x160/0x160 [ 34.519957] ? direct_splice_actor+0x160/0x160 [ 34.524513] splice_from_pipe+0xc6/0x120 [ 34.528548] ? splice_shrink_spd+0xb0/0xb0 [ 34.532778] ? rw_verify_area+0xe1/0x2a0 [ 34.536831] ? splice_from_pipe+0x120/0x120 [ 34.541145] SyS_splice+0xca0/0x1230 [ 34.544840] ? trace_hardirqs_on_caller+0x3f6/0x590 [ 34.549831] ? compat_SyS_vmsplice+0x250/0x250 [ 34.554401] ? do_syscall_64+0x4c/0x640 [ 34.558367] ? compat_SyS_vmsplice+0x250/0x250 [ 34.562934] do_syscall_64+0x1d5/0x640 [ 34.566803] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.571983] RIP: 0033:0x445bf9 [ 34.575147] RSP: 002b:00007fa997a48d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 34.582829] RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000445bf9 [ 34.590086] RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 [ 34.597342] RBP: 00000000006dac50 R08: 000000000004ffe2 R09: 0000000000000000 [ 34.604584] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c [ 34.611830] R13: 0000000000000000 R14: 0000000000000000 R15: 0705001000000048 [ 34.619122] Code: 00 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 95 [ 34.638215] RIP: vxlan_fdb_destroy+0xa3/0x1b0 RSP: ffff8880975af128 [ 34.646700] ---[ end trace 4a49d0436e6bd3a6 ]--- [ 34.651582] Kernel panic - not syncing: Fatal exception [ 34.658166] Kernel Offset: disabled [ 34.661778] Rebooting in 86400 seconds..