Warning: Permanently added '10.128.0.60' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.481756] audit: type=1400 audit(1598859232.310:8): avc: denied { execmem } for pid=6474 comm="syz-executor725" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.483752] kasan: CONFIG_KASAN_INLINE enabled [ 40.506766] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.514354] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.520595] CPU: 0 PID: 6474 Comm: syz-executor725 Not tainted 4.19.142-syzkaller #0 [ 40.528464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.537869] RIP: 0010:nfnetlink_parse_nat_setup+0x23f/0x640 [ 40.543583] Code: 2c 7b fb 49 8d 7e 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b1 03 00 00 48 8b 7c 24 08 4c 89 fe <41> ff 56 38 31 ff 89 c3 89 c6 e8 12 2e 7b fb 85 db 0f 88 55 02 00 [ 40.562494] RSP: 0018:ffff888089b67198 EFLAGS: 00010246 [ 40.567867] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85ee849b [ 40.575157] RDX: 1ffffffff0be9523 RSI: ffff888089b67210 RDI: ffff888089b67260 [ 40.582426] RBP: ffff8880a47a6d80 R08: 0000000000000001 R09: 0000000000000000 [ 40.589701] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 [ 40.596972] R13: 0000000000000001 R14: ffffffff85f4a8e0 R15: ffff888089b67210 [ 40.604236] FS: 0000000000c3d880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 40.612464] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.618350] CR2: 0000000020000300 CR3: 000000009315c000 CR4: 00000000001406f0 [ 40.625623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.632881] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.640140] Call Trace: [ 40.642727] ? nf_nat_inet_fn+0xb00/0xb00 [ 40.646869] ? lock_downgrade+0x720/0x720 [ 40.651010] ? do_raw_spin_lock+0xcb/0x220 [ 40.655256] ctnetlink_parse_nat_setup+0xb6/0x640 [ 40.660107] ctnetlink_create_conntrack+0x4bb/0x12c0 [ 40.665236] ? ctnetlink_change_synproxy.isra.0+0x380/0x380 [ 40.670953] ? hash_conntrack_raw+0x2d6/0x460 [ 40.675455] ? nf_ct_get_tuplepr+0x310/0x310 [ 40.679860] ? nf_ct_gc_expired+0x300/0x300 [ 40.684212] ? nfnetlink_rcv_msg+0x98d/0xf60 [ 40.688712] ctnetlink_new_conntrack+0x4f3/0xde0 [ 40.693486] ? ctnetlink_create_conntrack+0x12c0/0x12c0 [ 40.698854] ? nfnetlink_rcv_msg+0x98d/0xf60 [ 40.703361] ? nfnetlink_rcv_msg+0x95a/0xf60 [ 40.707767] ? ctnetlink_create_conntrack+0x12c0/0x12c0 [ 40.713135] nfnetlink_rcv_msg+0xc4f/0xf60 [ 40.717365] ? nfnetlink_net_exit_batch+0x150/0x150 [ 40.722392] ? __lock_acquire+0x6de/0x3ff0 [ 40.726791] ? cred_has_capability.isra.0+0x139/0x2b0 [ 40.731971] ? cred_has_capability.isra.0+0x1b0/0x2b0 [ 40.737164] ? check_nnp_nosuid.isra.0+0x2a0/0x2a0 [ 40.742079] ? check_nnp_nosuid.isra.0+0x2a0/0x2a0 [ 40.747021] netlink_rcv_skb+0x160/0x440 [ 40.751141] ? nfnetlink_net_exit_batch+0x150/0x150 [ 40.756178] ? netlink_ack+0xae0/0xae0 [ 40.760073] ? ns_capable+0xde/0x100 [ 40.763799] nfnetlink_rcv+0x1b2/0x41b [ 40.767702] ? nfnetlink_rcv_batch+0x1df0/0x1df0 [ 40.772464] netlink_unicast+0x4d5/0x690 [ 40.776551] ? netlink_sendskb+0x110/0x110 [ 40.780799] netlink_sendmsg+0x6bb/0xc40 [ 40.784865] ? nlmsg_notify+0x1a0/0x1a0 [ 40.788833] ? kernel_recvmsg+0x220/0x220 [ 40.792988] ? nlmsg_notify+0x1a0/0x1a0 [ 40.796970] sock_sendmsg+0xc3/0x120 [ 40.800696] ___sys_sendmsg+0x7bb/0x8e0 [ 40.804670] ? copy_msghdr_from_user+0x440/0x440 [ 40.809443] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 40.814716] ? prep_transhuge_page+0xa0/0xa0 [ 40.819113] ? check_preemption_disabled+0x41/0x280 [ 40.824146] ? mark_held_locks+0xf0/0xf0 [ 40.828206] ? __handle_mm_fault+0xf34/0x41c0 [ 40.832701] ? errseq_sample+0x56/0x70 [ 40.836575] ? vm_insert_page+0x9c0/0x9c0 [ 40.840728] ? __do_page_fault+0x71b/0xde0 [ 40.844953] ? __fdget+0x1a0/0x230 [ 40.848491] __x64_sys_sendmsg+0x132/0x220 [ 40.852741] ? __sys_sendmsg+0x1b0/0x1b0 [ 40.856845] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.861592] ? trace_hardirqs_off_caller+0x69/0x210 [ 40.866629] ? do_syscall_64+0x21/0x620 [ 40.870625] do_syscall_64+0xf9/0x620 [ 40.874439] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.879644] RIP: 0033:0x440359 [ 40.882835] 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 40.901735] RSP: 002b:00007ffeb5e838e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.909439] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 [ 40.916711] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 40.923985] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.931267] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60 [ 40.938535] R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 [ 40.945806] Modules linked in: [ 40.949623] ---[ end trace fbeee384f07b274a ]--- [ 40.954432] RIP: 0010:nfnetlink_parse_nat_setup+0x23f/0x640 [ 40.960161] Code: 2c 7b fb 49 8d 7e 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b1 03 00 00 48 8b 7c 24 08 4c 89 fe <41> ff 56 38 31 ff 89 c3 89 c6 e8 12 2e 7b fb 85 db 0f 88 55 02 00 [ 40.979170] RSP: 0018:ffff888089b67198 EFLAGS: 00010246 [ 40.984584] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85ee849b [ 40.991970] RDX: 1ffffffff0be9523 RSI: ffff888089b67210 RDI: ffff888089b67260 [ 40.999367] RBP: ffff8880a47a6d80 R08: 0000000000000001 R09: 0000000000000000 [ 41.006810] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 [ 41.014174] R13: 0000000000000001 R14: ffffffff85f4a8e0 R15: ffff888089b67210 [ 41.021484] FS: 0000000000c3d880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 41.029794] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.035757] CR2: 0000000020000300 CR3: 000000009315c000 CR4: 00000000001406f0 [ 41.043135] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.050489] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.057952] Kernel panic - not syncing: Fatal exception [ 41.064551] Kernel Offset: disabled [ 41.068197] Rebooting in 86400 seconds..