[ 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 '10.128.10.51' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.917311] audit: type=1400 audit(1599016504.676:8): avc: denied { execmem } for pid=6360 comm="syz-executor750" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 42.048277] divide error: 0000 [#1] PREEMPT SMP KASAN [ 42.048279] Modules linked in: [ 42.048286] CPU: 0 PID: 6362 Comm: syz-executor750 Not tainted 4.14.195-syzkaller #0 [ 42.048288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.048291] task: ffff88809744c2c0 task.stack: ffff888097408000 [ 42.048300] RIP: 0010:fbcon_init+0xccc/0x1dd0 [ 42.048302] RSP: 0018:ffff88809740f7d8 EFLAGS: 00010246 [ 42.048306] RAX: 0000000000000000 RBX: ffff8880a5a97780 RCX: 1ffff11014b52f27 [ 42.048308] RDX: 0000000000000000 RSI: ffff888097b08734 RDI: ffff8880a5a97938 [ 42.048310] RBP: ffff888097b08380 R08: ffff8880a5a97780 R09: 0000000000000000 [ 42.048312] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a5844dc0 [ 42.048315] R13: ffff888097b086b4 R14: 0000000000000000 R15: 0000000000000013 [ 42.048318] FS: 0000000000e99880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 42.048320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.048322] CR2: 00000000004b4c53 CR3: 00000000854d8000 CR4: 00000000001406f0 [ 42.048327] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.048329] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.048331] Call Trace: [ 42.048341] visual_init+0x332/0x5e0 [ 42.048345] vc_allocate+0x2c5/0x640 [ 42.048351] ? lock_acquire+0x170/0x3f0 [ 42.048354] ? vc_cons_allocated+0x70/0x70 [ 42.048359] con_install+0x4d/0x450 [ 42.048362] ? vc_allocate+0x640/0x640 [ 42.048372] tty_init_dev.part.0+0x99/0x400 [ 42.048377] tty_open+0x669/0x8b0 [ 42.048382] ? tty_kopen+0x1c0/0x1c0 [ 42.048386] ? tty_kopen+0x1c0/0x1c0 [ 42.048391] chrdev_open+0x23c/0x6d0 [ 42.048396] ? __register_chrdev+0x3d0/0x3d0 [ 42.048402] do_dentry_open+0x44b/0xec0 [ 42.048406] ? __register_chrdev+0x3d0/0x3d0 [ 42.048410] ? __inode_permission+0xcd/0x2f0 [ 42.048414] vfs_open+0x105/0x220 [ 42.048419] path_openat+0x628/0x2970 [ 42.048424] ? path_lookupat+0x780/0x780 [ 42.048428] ? trace_hardirqs_on+0x10/0x10 [ 42.048434] do_filp_open+0x179/0x3c0 [ 42.048438] ? may_open_dev+0xe0/0xe0 [ 42.048445] ? do_raw_spin_unlock+0x164/0x220 [ 42.048450] ? __alloc_fd+0x1be/0x490 [ 42.048455] do_sys_open+0x296/0x410 [ 42.048458] ? filp_open+0x60/0x60 [ 42.048465] ? __do_page_fault+0x19a/0xb50 [ 42.048469] ? do_syscall_64+0x4c/0x640 [ 42.048472] ? do_sys_open+0x410/0x410 [ 42.048476] do_syscall_64+0x1d5/0x640 [ 42.048484] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.048488] RIP: 0033:0x401200 [ 42.048490] RSP: 002b:00007ffcef74e8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 42.048493] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000401200 [ 42.048495] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffcef74e900 [ 42.048497] RBP: 000000000000a3d7 R08: 0000000000000000 R09: 000000000000000e [ 42.048500] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402220 [ 42.048502] R13: 00000000004022b0 R14: 0000000000000000 R15: 0000000000000000 [ 42.048506] 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 [ 42.048577] RIP: fbcon_init+0xccc/0x1dd0 RSP: ffff88809740f7d8 [ 42.048584] ---[ end trace 5db6d7e39adc5dc2 ]--- [ 42.048587] Kernel panic - not syncing: Fatal exception [ 42.049776] Kernel Offset: disabled [ 42.369616] Rebooting in 86400 seconds..