Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.802038] kauditd_printk_skb: 5 callbacks suppressed [ 54.802053] audit: type=1400 audit(1580340156.101:36): avc: denied { map } for pid=8159 comm="syz-executor731" path="/root/syz-executor731660369" 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 [ 54.805755] kasan: CONFIG_KASAN_INLINE enabled [ 54.807938] audit: type=1400 audit(1580340156.101:37): avc: denied { create } for pid=8159 comm="syz-executor731" 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 [ 54.834561] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 54.841297] audit: type=1400 audit(1580340156.101:38): avc: denied { write } for pid=8159 comm="syz-executor731" 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 [ 54.863227] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 54.900976] CPU: 1 PID: 8159 Comm: syz-executor731 Not tainted 4.19.100-syzkaller #0 [ 54.908847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.918215] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 54.924001] 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 bf a7 6e fb 85 db 0f 88 44 01 00 [ 54.942895] RSP: 0018:ffff888096f67148 EFLAGS: 00010246 [ 54.948253] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fc5e08 [ 54.955516] RDX: 1ffffffff0c04829 RSI: ffff888096f67180 RDI: ffff888096f671d0 [ 54.962773] RBP: ffff888096f67268 R08: ffff888097b5e700 R09: ffff888096f671d0 [ 54.970031] R10: ffffed1012dece3f R11: ffff888096f671ff R12: ffff8880a9452340 [ 54.977288] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff86024110 [ 54.984557] FS: 0000000002292880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 54.992768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.998758] CR2: 00005594144a4180 CR3: 000000008a619000 CR4: 00000000001406e0 [ 55.006017] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.013279] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.020678] Call Trace: [ 55.023260] ? nf_nat_inet_fn+0x8b0/0x8b0 [ 55.027400] ctnetlink_parse_nat_setup+0xc5/0x660 [ 55.032256] ctnetlink_create_conntrack+0x4ea/0x1300 [ 55.037355] ? ctnetlink_dump_table+0x12e0/0x12e0 [ 55.042335] ? __nf_conntrack_confirm+0x31e0/0x31e0 [ 55.047432] ctnetlink_new_conntrack+0x527/0xe50 [ 55.052264] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 55.057627] ? find_held_lock+0x35/0x130 [ 55.061675] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 55.066905] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 55.072283] nfnetlink_rcv_msg+0xd0d/0xfcf [ 55.076519] ? nfnetlink_bind+0x2c0/0x2c0 [ 55.080652] ? avc_has_extended_perms+0x10f0/0x10f0 [ 55.085679] ? __save_stack_trace+0x99/0x100 [ 55.090094] ? selinux_ipv4_output+0x50/0x50 [ 55.094501] ? netlink_sendmsg+0x97b/0xd70 [ 55.098862] ? mark_held_locks+0x100/0x100 [ 55.103091] netlink_rcv_skb+0x17d/0x460 [ 55.107204] ? nfnetlink_bind+0x2c0/0x2c0 [ 55.111399] ? netlink_ack+0xb30/0xb30 [ 55.115275] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.120819] ? ns_capable_common+0x93/0x100 [ 55.125139] ? ns_capable+0x20/0x30 [ 55.128765] ? __netlink_ns_capable+0x104/0x140 [ 55.133433] nfnetlink_rcv+0x1c0/0x460 [ 55.137311] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 55.142054] ? netlink_deliver_tap+0x254/0xc20 [ 55.146639] ? kasan_check_write+0x14/0x20 [ 55.151482] netlink_unicast+0x53a/0x730 [ 55.155532] ? netlink_attachskb+0x770/0x770 [ 55.159937] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.165479] netlink_sendmsg+0x8ae/0xd70 [ 55.169637] ? netlink_unicast+0x730/0x730 [ 55.173871] ? selinux_socket_sendmsg+0x36/0x40 [ 55.178636] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.184203] ? security_socket_sendmsg+0x8d/0xc0 [ 55.189014] ? netlink_unicast+0x730/0x730 [ 55.193276] sock_sendmsg+0xd7/0x130 [ 55.196977] ___sys_sendmsg+0x803/0x920 [ 55.201058] ? copy_msghdr_from_user+0x430/0x430 [ 55.205816] ? __handle_mm_fault+0x7d1/0x3f80 [ 55.210309] ? copy_page_range+0x2030/0x2030 [ 55.214715] ? __do_page_fault+0x676/0xe90 [ 55.218953] ? find_held_lock+0x35/0x130 [ 55.223014] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.228554] ? __fget_light+0x1a9/0x230 [ 55.232610] ? __fdget+0x1b/0x20 [ 55.235973] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.241506] __sys_sendmsg+0x105/0x1d0 [ 55.245398] ? __ia32_sys_shutdown+0x80/0x80 [ 55.249802] ? up_read+0x1a/0x110 [ 55.253265] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.258017] ? do_syscall_64+0x26/0x620 [ 55.262043] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.267397] ? do_syscall_64+0x26/0x620 [ 55.271487] __x64_sys_sendmsg+0x78/0xb0 [ 55.275596] do_syscall_64+0xfd/0x620 [ 55.279398] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.284602] RIP: 0033:0x440239 [ 55.287789] 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 [ 55.306687] RSP: 002b:00007fffdc11d578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.314384] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 [ 55.321658] RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003 [ 55.328921] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 55.336193] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ac0 [ 55.343448] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 55.350710] Modules linked in: [ 55.353977] ---[ end trace dd8f7f36e6160174 ]--- [ 55.358807] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 55.364505] 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 bf a7 6e fb 85 db 0f 88 44 01 00 [ 55.383451] RSP: 0018:ffff888096f67148 EFLAGS: 00010246 [ 55.388836] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fc5e08 [ 55.396103] RDX: 1ffffffff0c04829 RSI: ffff888096f67180 RDI: ffff888096f671d0 [ 55.403512] RBP: ffff888096f67268 R08: ffff888097b5e700 R09: ffff888096f671d0 [ 55.410822] R10: ffffed1012dece3f R11: ffff888096f671ff R12: ffff8880a9452340 [ 55.418120] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff86024110 [ 55.425393] FS: 0000000002292880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 55.433714] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.439628] CR2: 00005594144a4180 CR3: 000000008a619000 CR4: 00000000001406e0 [ 55.446935] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.454223] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.461562] Kernel panic - not syncing: Fatal exception [ 55.468468] Kernel Offset: disabled [ 55.472091] Rebooting in 86400 seconds..