Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 53.193234] kauditd_printk_skb: 5 callbacks suppressed [ 53.193251] audit: type=1400 audit(1579939690.683:36): avc: denied { map } for pid=8155 comm="syz-executor475" path="/root/syz-executor475353599" 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 [ 53.197614] kasan: CONFIG_KASAN_INLINE enabled [ 53.202626] audit: type=1400 audit(1579939690.683:37): avc: denied { create } for pid=8155 comm="syz-executor475" 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 [ 53.227165] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 53.233316] audit: type=1400 audit(1579939690.683:38): avc: denied { write } for pid=8155 comm="syz-executor475" 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 [ 53.255666] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 53.294534] CPU: 0 PID: 8155 Comm: syz-executor475 Not tainted 4.19.98-syzkaller #0 [ 53.302688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.312428] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 53.318171] 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 af 5c 6d fb 85 db 0f 88 44 01 00 [ 53.338090] RSP: 0018:ffff88809b0c7148 EFLAGS: 00010246 [ 53.343450] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fdb9f8 [ 53.350717] RDX: 1ffffffff0c07bfd RSI: ffff88809b0c7180 RDI: ffff88809b0c71d0 [ 53.357989] RBP: ffff88809b0c7268 R08: ffff8880979c8400 R09: ffff88809b0c71d0 [ 53.365315] R10: ffffed1013618e3f R11: ffff88809b0c71ff R12: ffff8880a948d1c0 [ 53.372581] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8603dfb0 [ 53.379863] FS: 000000000243a880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 53.388278] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.394271] CR2: 0000000020000280 CR3: 00000000a07ad000 CR4: 00000000001406f0 [ 53.402023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.409738] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.417724] Call Trace: [ 53.420342] ? nf_nat_inet_fn+0x8b0/0x8b0 [ 53.424506] ctnetlink_parse_nat_setup+0xc5/0x660 [ 53.429347] ctnetlink_create_conntrack+0x532/0x1300 [ 53.434825] ? ctnetlink_dump_table+0x12e0/0x12e0 [ 53.440427] ? __nf_conntrack_confirm+0x31e0/0x31e0 [ 53.445462] ctnetlink_new_conntrack+0x527/0xe50 [ 53.450828] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 53.456400] ? find_held_lock+0x35/0x130 [ 53.460482] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 53.465742] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 53.471118] nfnetlink_rcv_msg+0xd0d/0xfcf [ 53.475436] ? nfnetlink_bind+0x2c0/0x2c0 [ 53.479652] ? avc_has_extended_perms+0x10f0/0x10f0 [ 53.484683] ? __save_stack_trace+0x99/0x100 [ 53.489301] ? selinux_ipv4_output+0x50/0x50 [ 53.493714] ? netlink_sendmsg+0x97b/0xd70 [ 53.497950] ? mark_held_locks+0x100/0x100 [ 53.502179] netlink_rcv_skb+0x17d/0x460 [ 53.506231] ? nfnetlink_bind+0x2c0/0x2c0 [ 53.510389] ? netlink_ack+0xb30/0xb30 [ 53.514274] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.519811] ? ns_capable_common+0x93/0x100 [ 53.524119] ? ns_capable+0x20/0x30 [ 53.527888] ? __netlink_ns_capable+0x104/0x140 [ 53.532573] nfnetlink_rcv+0x1c0/0x460 [ 53.536814] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 53.541591] ? netlink_deliver_tap+0x254/0xc20 [ 53.546274] ? kasan_check_write+0x14/0x20 [ 53.550588] netlink_unicast+0x53a/0x730 [ 53.554649] ? netlink_attachskb+0x770/0x770 [ 53.559066] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.564646] netlink_sendmsg+0x8ae/0xd70 [ 53.568904] ? netlink_unicast+0x730/0x730 [ 53.573291] ? selinux_socket_sendmsg+0x36/0x40 [ 53.577954] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.583568] ? security_socket_sendmsg+0x8d/0xc0 [ 53.588332] ? netlink_unicast+0x730/0x730 [ 53.592666] sock_sendmsg+0xd7/0x130 [ 53.596394] ___sys_sendmsg+0x803/0x920 [ 53.600629] ? copy_msghdr_from_user+0x430/0x430 [ 53.605382] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.610952] ? __handle_mm_fault+0x7d1/0x3f80 [ 53.615536] ? copy_page_range+0x2030/0x2030 [ 53.620031] ? __do_page_fault+0x676/0xe90 [ 53.624269] ? find_held_lock+0x35/0x130 [ 53.628331] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.634039] ? __fget_light+0x1a9/0x230 [ 53.638015] ? __fdget+0x1b/0x20 [ 53.641523] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.647063] __sys_sendmsg+0x105/0x1d0 [ 53.650951] ? __ia32_sys_shutdown+0x80/0x80 [ 53.655688] ? up_read+0x1a/0x110 [ 53.659191] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.663950] ? do_syscall_64+0x26/0x620 [ 53.667972] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.673461] ? do_syscall_64+0x26/0x620 [ 53.677580] __x64_sys_sendmsg+0x78/0xb0 [ 53.681653] do_syscall_64+0xfd/0x620 [ 53.685465] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.690847] RIP: 0033:0x440269 [ 53.694201] 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 [ 53.713356] RSP: 002b:00007fffb295c008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 53.721071] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440269 [ 53.728589] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 53.736301] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 53.743621] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401af0 [ 53.750981] R13: 0000000000401b80 R14: 0000000000000000 R15: 0000000000000000 [ 53.758301] Modules linked in: [ 53.762441] ---[ end trace 6bbffd991482e715 ]--- [ 53.767274] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 53.773174] 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 af 5c 6d fb 85 db 0f 88 44 01 00 [ 53.792350] RSP: 0018:ffff88809b0c7148 EFLAGS: 00010246 [ 53.797953] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fdb9f8 [ 53.805465] RDX: 1ffffffff0c07bfd RSI: ffff88809b0c7180 RDI: ffff88809b0c71d0 [ 53.812836] RBP: ffff88809b0c7268 R08: ffff8880979c8400 R09: ffff88809b0c71d0 [ 53.820169] R10: ffffed1013618e3f R11: ffff88809b0c71ff R12: ffff8880a948d1c0 [ 53.827542] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8603dfb0 [ 53.834863] FS: 000000000243a880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 53.843186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.849146] CR2: 0000000020000280 CR3: 00000000a07ad000 CR4: 00000000001406f0 [ 53.856603] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.863982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.871607] Kernel panic - not syncing: Fatal exception [ 53.878800] Kernel Offset: disabled [ 53.882582] Rebooting in 86400 seconds..