Warning: Permanently added '10.128.10.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.883080] kauditd_printk_skb: 5 callbacks suppressed [ 55.883096] audit: type=1400 audit(1580696208.736:36): avc: denied { map } for pid=8402 comm="syz-executor795" path="/root/syz-executor795978591" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 55.887710] netlink: 8 bytes leftover after parsing attributes in process `syz-executor795'. [ 55.888575] audit: type=1400 audit(1580696208.736:37): avc: denied { create } for pid=8402 comm="syz-executor795" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 55.916197] kasan: CONFIG_KASAN_INLINE enabled [ 55.924351] audit: type=1400 audit(1580696208.736:38): avc: denied { write } for pid=8402 comm="syz-executor795" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 55.948844] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.985115] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 55.991768] CPU: 0 PID: 8402 Comm: syz-executor795 Not tainted 4.19.101-syzkaller #0 [ 56.000280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.009735] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 56.015596] Code: 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 2f 88 6e fb 85 db 0f 88 44 01 00 [ 56.034864] RSP: 0018:ffff888094cc7148 EFLAGS: 00010246 [ 56.040439] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fc8468 [ 56.047748] RDX: 1ffffffff0c06c4b RSI: ffff888094cc7180 RDI: ffff888094cc71d0 [ 56.055247] RBP: ffff888094cc7268 R08: ffff88808e03a140 R09: ffffed1015d05079 [ 56.063324] R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff888080f72d80 [ 56.070663] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff86036220 [ 56.078039] FS: 0000000001da4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 56.086381] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.092312] CR2: 0000559b2c4c5190 CR3: 000000009c73d000 CR4: 00000000001406f0 [ 56.099619] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.107113] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.115195] Call Trace: [ 56.117798] ? nf_nat_inet_fn+0x8b0/0x8b0 [ 56.122132] ctnetlink_parse_nat_setup+0xc5/0x660 [ 56.127120] ctnetlink_create_conntrack+0x532/0x1300 [ 56.132233] ? ctnetlink_dump_table+0x12e0/0x12e0 [ 56.137109] ? __nf_conntrack_confirm+0x31e0/0x31e0 [ 56.142152] ctnetlink_new_conntrack+0x527/0xe50 [ 56.147078] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 56.153065] ? find_held_lock+0x35/0x130 [ 56.157135] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 56.162331] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 56.167698] nfnetlink_rcv_msg+0xd0d/0xfcf [ 56.171935] ? nfnetlink_bind+0x2c0/0x2c0 [ 56.176098] ? avc_has_extended_perms+0x10f0/0x10f0 [ 56.181128] ? __save_stack_trace+0x99/0x100 [ 56.185537] ? selinux_ipv4_output+0x50/0x50 [ 56.190027] ? netlink_sendmsg+0x97b/0xd70 [ 56.194432] ? mark_held_locks+0x100/0x100 [ 56.198676] netlink_rcv_skb+0x17d/0x460 [ 56.203054] ? nfnetlink_bind+0x2c0/0x2c0 [ 56.207201] ? netlink_ack+0xb30/0xb30 [ 56.211247] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.216836] ? ns_capable_common+0x93/0x100 [ 56.221306] ? ns_capable+0x20/0x30 [ 56.224951] ? __netlink_ns_capable+0x104/0x140 [ 56.230002] nfnetlink_rcv+0x1c0/0x460 [ 56.233891] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 56.238658] ? netlink_deliver_tap+0x254/0xc20 [ 56.243540] ? kasan_check_write+0x14/0x20 [ 56.248287] netlink_unicast+0x53a/0x730 [ 56.252505] ? netlink_attachskb+0x770/0x770 [ 56.257076] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.263169] netlink_sendmsg+0x8ae/0xd70 [ 56.267620] ? netlink_unicast+0x730/0x730 [ 56.271881] ? selinux_socket_sendmsg+0x36/0x40 [ 56.276540] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.282087] ? security_socket_sendmsg+0x8d/0xc0 [ 56.286867] ? netlink_unicast+0x730/0x730 [ 56.291215] sock_sendmsg+0xd7/0x130 [ 56.295718] ___sys_sendmsg+0x803/0x920 [ 56.300029] ? copy_msghdr_from_user+0x430/0x430 [ 56.304898] ? rcu_read_lock_sched_held+0x110/0x130 [ 56.310408] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.315947] ? percpu_counter_add_batch+0x13c/0x190 [ 56.320971] ? __fd_install+0x1bc/0x640 [ 56.324937] ? find_held_lock+0x35/0x130 [ 56.329060] ? __fd_install+0x1bc/0x640 [ 56.333040] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.338775] ? __fget_light+0x1a9/0x230 [ 56.343289] ? __fdget+0x1b/0x20 [ 56.346968] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.353046] __sys_sendmsg+0x105/0x1d0 [ 56.357041] ? __ia32_sys_shutdown+0x80/0x80 [ 56.361481] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.366246] ? do_syscall_64+0x26/0x620 [ 56.370291] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.375801] ? do_syscall_64+0x26/0x620 [ 56.380103] __x64_sys_sendmsg+0x78/0xb0 [ 56.384180] do_syscall_64+0xfd/0x620 [ 56.388255] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.393977] RIP: 0033:0x440239 [ 56.397401] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.416422] RSP: 002b:00007ffe295704e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.424858] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 [ 56.432129] RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003 [ 56.439482] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 56.446812] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ac0 [ 56.454089] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 56.461959] Modules linked in: [ 56.465868] ---[ end trace bbf233ec557c1ae3 ]--- [ 56.471413] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 56.477479] Code: 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 2f 88 6e fb 85 db 0f 88 44 01 00 [ 56.496862] RSP: 0018:ffff888094cc7148 EFLAGS: 00010246 [ 56.502278] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fc8468 [ 56.510142] RDX: 1ffffffff0c06c4b RSI: ffff888094cc7180 RDI: ffff888094cc71d0 [ 56.518507] RBP: ffff888094cc7268 R08: ffff88808e03a140 R09: ffffed1015d05079 [ 56.526057] R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff888080f72d80 [ 56.534239] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff86036220 [ 56.541902] FS: 0000000001da4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 56.550171] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.556069] CR2: 0000559b2c4c5190 CR3: 000000009c73d000 CR4: 00000000001406f0 [ 56.563513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.572011] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.580166] Kernel panic - not syncing: Fatal exception [ 56.587296] Kernel Offset: disabled [ 56.591033] Rebooting in 86400 seconds..