[ 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 '10.128.0.76' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.969882] kasan: CONFIG_KASAN_INLINE enabled [ 27.974572] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.981928] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.988134] Modules linked in: [ 27.991304] CPU: 1 PID: 7962 Comm: syz-executor337 Not tainted 4.14.275-syzkaller #0 [ 27.999154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.008483] task: ffff8880b51a0040 task.stack: ffff88809bd10000 [ 28.014542] RIP: 0010:llc_ui_autobind.isra.0+0x26b/0x390 [ 28.019972] RSP: 0018:ffff88809bd17bf8 EFLAGS: 00010202 [ 28.025310] RAX: dffffc0000000000 RBX: ffff8880b31a69c0 RCX: 1ffffffff127a4bc [ 28.032556] RDX: 00000000000000a8 RSI: ffff88809bd17e28 RDI: 0000000000000540 [ 28.039800] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 28.047045] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffea [ 28.054290] R13: ffff88809bd17e28 R14: ffff8880940304c0 R15: ffff8880940304e0 [ 28.061534] FS: 00005555572f2300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.069752] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.075605] CR2: 0000000020001380 CR3: 00000000a4dd9000 CR4: 00000000003406e0 [ 28.082853] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.090094] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.097335] Call Trace: [ 28.099917] llc_ui_sendmsg+0x638/0xec0 [ 28.103885] ? lock_acquire+0x170/0x3f0 [ 28.107867] ? lock_downgrade+0x740/0x740 [ 28.112005] ? llc_ui_connect+0xab0/0xab0 [ 28.116152] ? __might_fault+0x177/0x1b0 [ 28.120191] ? security_socket_sendmsg+0x83/0xb0 [ 28.124925] ? llc_ui_connect+0xab0/0xab0 [ 28.129048] sock_sendmsg+0xb5/0x100 [ 28.132743] SyS_sendto+0x1c7/0x2c0 [ 28.136346] ? SyS_getpeername+0x220/0x220 [ 28.140570] ? vm_insert_page+0x7c0/0x7c0 [ 28.144699] ? do_syscall_64+0x4c/0x640 [ 28.148652] ? SyS_getpeername+0x220/0x220 [ 28.152861] do_syscall_64+0x1d5/0x640 [ 28.156729] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.161894] RIP: 0033:0x7ffb767a4019 [ 28.165600] RSP: 002b:00007fffed09e518 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.173281] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffb767a4019 [ 28.180523] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 28.187769] RBP: 00007ffb76768000 R08: 0000000020001380 R09: 0000000000000080 [ 28.195013] R10: 00000000000040c0 R11: 0000000000000246 R12: 00007ffb76768090 [ 28.202255] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 28.209499] Code: 55 ff ff 48 0f ba 73 60 08 45 31 e4 31 ed e8 dd 7c 84 fb 48 8d bd 40 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f2 00 00 00 48 8b 85 40 05 00 00 65 ff 08 44 [ 28.228563] RIP: llc_ui_autobind.isra.0+0x26b/0x390 RSP: ffff88809bd17bf8 [ 28.235849] ---[ end trace 492e12486ae8ea34 ]--- [ 28.240600] Kernel panic - not syncing: Fatal exception [ 28.246157] Kernel Offset: disabled [ 28.249766] Rebooting in 86400 seconds..