[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.161930] audit: type=1400 audit(1588024406.255:8): avc: denied { execmem } for pid=6333 comm="syz-executor331" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.182980] kasan: CONFIG_KASAN_INLINE enabled [ 34.187669] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.195040] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.201242] Modules linked in: [ 34.204496] CPU: 1 PID: 6333 Comm: syz-executor331 Not tainted 4.14.177-syzkaller #0 [ 34.212390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.221735] task: ffff888097c08300 task.stack: ffff8880983c8000 [ 34.227778] RIP: 0010:fq_codel_enqueue+0x951/0x1070 [ 34.232765] RSP: 0018:ffff8880983cf870 EFLAGS: 00010246 [ 34.238103] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888086b0afc0 [ 34.245349] RDX: 0000000000000000 RSI: ffff8880983cfa00 RDI: 0000000000000000 [ 34.252635] RBP: ffff8880983cf950 R08: 000000097886abce R09: ffff88821fff7048 [ 34.259879] R10: ffff88821fff7050 R11: 0000000000000001 R12: dffffc0000000000 [ 34.267133] R13: 0000000000000000 R14: ffff888086b00180 R15: ffff8880983cfa00 [ 34.274376] FS: 0000000001216880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 34.282571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.288430] CR2: 000056397e4e3270 CR3: 00000000a94b4000 CR4: 00000000001406e0 [ 34.295676] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.302918] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.310157] Call Trace: [ 34.312733] ? drop_func+0x60/0x60 [ 34.316248] __dev_queue_xmit+0x12dc/0x25c0 [ 34.320542] ? netdev_pick_tx+0x2e0/0x2e0 [ 34.324666] ? skb_copy_datagram_from_iter+0x3b3/0x5c0 [ 34.329926] ? _copy_from_iter_full+0x1b9/0x6a0 [ 34.334569] ? packet_sendmsg+0x1bf7/0x54b0 [ 34.338864] packet_sendmsg+0x1bf7/0x54b0 [ 34.342990] ? trace_hardirqs_on+0x10/0x10 [ 34.347196] ? sock_has_perm+0x1c0/0x230 [ 34.351229] ? selinux_tun_dev_create+0xc0/0xc0 [ 34.355879] ? packet_notifier+0x750/0x750 [ 34.360084] ? save_trace+0x290/0x290 [ 34.363866] ? release_sock+0x1b/0x1b0 [ 34.367730] ? security_socket_sendmsg+0x83/0xb0 [ 34.375350] ? packet_notifier+0x750/0x750 [ 34.379565] sock_sendmsg+0xc5/0x100 [ 34.383260] SYSC_sendto+0x1c4/0x2b0 [ 34.386956] ? SYSC_connect+0x250/0x250 [ 34.390923] ? move_addr_to_kernel.part.0+0xf0/0xf0 [ 34.395926] ? do_syscall_64+0x4c/0x640 [ 34.399882] ? SyS_sendto+0x21/0x50 [ 34.403479] ? SyS_getpeername+0x30/0x30 [ 34.407598] do_syscall_64+0x1d5/0x640 [ 34.411458] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.416622] RIP: 0033:0x4404e9 [ 34.419784] RSP: 002b:00007ffc6bcea868 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 34.427464] RAX: ffffffffffffffda RBX: 00000000004a167e RCX: 00000000004404e9 [ 34.434706] RDX: 00000000000001e8 RSI: 0000000020000480 RDI: 0000000000000005 [ 34.441947] RBP: 54c6c2ff093a6d32 R08: 0000000000000000 R09: 0000000000000000 [ 34.455013] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000010000 [ 34.462265] R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000 [ 34.469518] Code: 8b 54 24 68 3b 54 24 60 0f 83 bd 00 00 00 e8 57 3b 42 fc 48 8b 44 24 38 80 38 00 0f 85 25 05 00 00 49 8b 06 48 89 c2 48 c1 ea 03 <42> 80 3c 22 00 0f 85 1d 05 00 00 48 8b 10 48 8d 78 28 49 89 16 [ 34.488583] RIP: fq_codel_enqueue+0x951/0x1070 RSP: ffff8880983cf870 [ 34.495108] ---[ end trace 6cc2612bf1625d36 ]--- [ 34.499871] Kernel panic - not syncing: Fatal exception in interrupt [ 34.507682] Kernel Offset: disabled [ 34.511309] Rebooting in 86400 seconds..