[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.122283] audit: type=1400 audit(1598004827.674:8): avc: denied { execmem } for pid=6353 comm="syz-executor011" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 38.251216] divide error: 0000 [#1] PREEMPT SMP KASAN [ 38.251220] Modules linked in: [ 38.251226] CPU: 0 PID: 6355 Comm: syz-executor011 Not tainted 4.14.194-syzkaller #0 [ 38.251228] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.251231] task: ffff8880986e0300 task.stack: ffff888099cf8000 [ 38.251241] RIP: 0010:fbcon_init+0xccc/0x1dd0 [ 38.251243] RSP: 0018:ffff888099cff7d8 EFLAGS: 00010246 [ 38.251246] RAX: 0000000000000000 RBX: ffff8882191e2300 RCX: 1ffff1104323c497 [ 38.251249] RDX: 0000000000000000 RSI: ffff8880975dd734 RDI: ffff8882191e24b8 [ 38.251251] RBP: ffff8880975dd380 R08: ffff8882191e2300 R09: 0000000000000000 [ 38.251253] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888219268640 [ 38.251256] R13: ffff8880975dd6b4 R14: 0000000000000800 R15: 0000000000000013 [ 38.251259] FS: 0000000000c08880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 38.251261] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.251263] CR2: 00000000004b4c53 CR3: 00000000a96dc000 CR4: 00000000001406f0 [ 38.251269] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.251271] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.251272] Call Trace: [ 38.251282] visual_init+0x332/0x5e0 [ 38.251287] vc_allocate+0x2c5/0x640 [ 38.251293] ? lock_acquire+0x170/0x3f0 [ 38.251297] ? vc_cons_allocated+0x70/0x70 [ 38.251301] con_install+0x4d/0x450 [ 38.251304] ? vc_allocate+0x640/0x640 [ 38.251310] tty_init_dev.part.0+0x99/0x400 [ 38.251314] tty_open+0x669/0x8b0 [ 38.251320] ? tty_kopen+0x1c0/0x1c0 [ 38.251324] ? tty_kopen+0x1c0/0x1c0 [ 38.251330] chrdev_open+0x23c/0x6d0 [ 38.251334] ? __register_chrdev+0x3d0/0x3d0 [ 38.251341] do_dentry_open+0x44b/0xec0 [ 38.251345] ? __register_chrdev+0x3d0/0x3d0 [ 38.251349] ? __inode_permission+0xcd/0x2f0 [ 38.251353] vfs_open+0x105/0x220 [ 38.251358] path_openat+0x628/0x2970 [ 38.251363] ? path_lookupat+0x780/0x780 [ 38.251367] ? trace_hardirqs_on+0x10/0x10 [ 38.251373] do_filp_open+0x179/0x3c0 [ 38.251377] ? may_open_dev+0xe0/0xe0 [ 38.251385] ? do_raw_spin_unlock+0x164/0x220 [ 38.251389] ? __alloc_fd+0x1be/0x490 [ 38.251394] do_sys_open+0x296/0x410 [ 38.251398] ? filp_open+0x60/0x60 [ 38.251403] ? __do_page_fault+0x19a/0xb50 [ 38.251408] ? do_syscall_64+0x4c/0x640 [ 38.251411] ? do_sys_open+0x410/0x410 [ 38.251415] do_syscall_64+0x1d5/0x640 [ 38.251423] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 38.251426] RIP: 0033:0x4011f0 [ 38.251428] RSP: 002b:00007ffd09bfba58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 38.251432] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004011f0 [ 38.251435] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffd09bfba70 [ 38.251438] RBP: 0000000000009502 R08: 0000000000000000 R09: 000000000000000e [ 38.251442] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402210 [ 38.251445] R13: 00000000004022a0 R14: 0000000000000000 R15: 0000000000000000 [ 38.251452] Code: 24 38 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e ad 0d 00 00 8b 44 24 20 31 d2 48 8b 74 24 40 b5 b0 03 00 00 48 89 f2 48 c1 ea 03 89 44 24 20 48 b8 00 00 [ 38.251541] RIP: fbcon_init+0xccc/0x1dd0 RSP: ffff888099cff7d8 [ 38.251548] ---[ end trace 618299d5a9dbcfd3 ]--- [ 38.251550] Kernel panic - not syncing: Fatal exception [ 38.252785] Kernel Offset: disabled [ 38.572497] Rebooting in 86400 seconds..