[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.246' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.814504] BUG: unable to handle kernel paging request at ffff888001000030 [ 35.814510] PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 [ 35.814523] Oops: 0003 [#1] PREEMPT SMP KASAN [ 35.814530] CPU: 1 PID: 8127 Comm: syz-executor115 Not tainted 4.19.211-syzkaller #0 [ 35.814535] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.814547] RIP: 0010:bitfill_aligned+0x17f/0x200 [ 35.814554] Code: 49 01 c5 e8 23 c4 c7 fd 41 8d 6f ff 31 ff 44 89 fe e8 85 c5 c7 fd 45 85 ff 74 28 4d 89 ec e8 08 c4 c7 fd 4c 89 e0 49 83 c4 08 <48> 89 18 31 ff 89 ee 83 ed 01 e8 62 c5 c7 fd 83 fd ff 75 e0 4f 8d [ 35.814557] RSP: 0018:ffff8880b140f2b0 EFLAGS: 00010282 [ 35.814563] RAX: ffff888001000030 RBX: 0000000000000000 RCX: ffffffff839ac15b [ 35.814567] RDX: 0000000000000000 RSI: ffffffff839ac168 RDI: 0000000000000005 [ 35.814570] RBP: 0000000000000001 R08: 0000000000000080 R09: 0000000000000000 [ 35.814574] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888001000038 [ 35.814578] R13: ffff888001000030 R14: 0000000000000000 R15: 0000000000000002 [ 35.814584] FS: 0000555556491300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.814588] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.814592] CR2: ffff888001000030 CR3: 000000009a26c000 CR4: 00000000003406e0 [ 35.814601] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.814606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.814608] Call Trace: [ 35.814619] cfb_fillrect+0x40b/0x7b0 [ 35.814627] ? cfb_fillrect+0x7b0/0x7b0 [ 35.814635] vga16fb_fillrect+0x683/0x1940 [ 35.814644] ? memcpy+0x35/0x50 [ 35.814652] bit_clear_margins+0x3f6/0x4b0 [ 35.814659] ? bit_clear+0x4d0/0x4d0 [ 35.814665] ? vga16fb_update_fix+0x4a0/0x4a0 [ 35.814674] fbcon_clear_margins+0x1e2/0x350 [ 35.814681] fbcon_switch+0xf0d/0x1ba0 [ 35.814689] ? fbcon_event_notify+0x1d80/0x1d80 [ 35.814698] ? bit_update_start+0x1f0/0x1f0 [ 35.814704] ? fbcon_cursor+0x531/0x710 [ 35.814714] redraw_screen+0x37d/0x870 [ 35.814723] ? wait_for_completion_io+0x10/0x10 [ 35.814730] ? vc_init+0x440/0x440 [ 35.814739] vc_do_resize+0x1145/0x1440 [ 35.814756] ? lock_acquire+0x170/0x3c0 [ 35.814763] ? redraw_screen+0x870/0x870 [ 35.814773] ? check_preemption_disabled+0x41/0x280 [ 35.814781] fbcon_do_set_font+0x470/0x870 [ 35.814788] fbcon_set_font+0x761/0x8a0 [ 35.814796] ? fbcon_get_font+0x7d0/0x7d0 [ 35.814803] con_font_op+0x94b/0xf20 [ 35.814811] ? con_write+0xb0/0xb0 [ 35.814818] ? lock_downgrade+0x720/0x720 [ 35.814827] ? __might_fault+0x192/0x1d0 [ 35.814834] vt_ioctl+0x1543/0x2380 [ 35.814841] ? is_bpf_text_address+0xfc/0x1b0 [ 35.814847] ? vt_waitactive+0x350/0x350 [ 35.814855] ? kernel_text_address+0xbd/0xf0 [ 35.814862] ? __kernel_text_address+0x9/0x30 [ 35.814870] ? unwind_get_return_address+0x51/0x90 [ 35.814878] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.814884] ? __save_stack_trace+0xaf/0x190 [ 35.814894] ? __sanitizer_cov_trace_switch+0x4b/0x80 [ 35.814900] ? vt_waitactive+0x350/0x350 [ 35.814909] tty_ioctl+0x5b0/0x1630 [ 35.814916] ? do_sys_open+0x2ba/0x520 [ 35.814923] ? tty_fasync+0x300/0x300 [ 35.814930] ? mark_held_locks+0xf0/0xf0 [ 35.814937] ? debug_check_no_obj_freed+0x201/0x490 [ 35.814945] ? lock_downgrade+0x720/0x720 [ 35.814952] ? lock_acquire+0x170/0x3c0 [ 35.814958] ? debug_check_no_obj_freed+0xb5/0x490 [ 35.814964] ? tty_fasync+0x300/0x300 [ 35.814972] do_vfs_ioctl+0xcdb/0x12e0 [ 35.814979] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 35.814985] ? debug_check_no_obj_freed+0x201/0x490 [ 35.814991] ? ioctl_preallocate+0x200/0x200 [ 35.814999] ? putname+0xe1/0x120 [ 35.815007] ? putname+0xe1/0x120 [ 35.815014] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.815020] ? kmem_cache_free+0x226/0x260 [ 35.815027] ? putname+0xe1/0x120 [ 35.815033] ? do_sys_open+0x2bf/0x520 [ 35.815039] ? filp_open+0x70/0x70 [ 35.815046] ksys_ioctl+0x9b/0xc0 [ 35.815053] __x64_sys_ioctl+0x6f/0xb0 [ 35.815060] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.815067] do_syscall_64+0xf9/0x620 [ 35.815074] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.815080] RIP: 0033:0x7ffb6d7004d9 [ 35.815086] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 35.815090] RSP: 002b:00007ffd1145ab88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 35.815096] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffb6d7004d9 [ 35.815100] RDX: 0000000020000400 RSI: 0000000000004b72 RDI: 0000000000000004 [ 35.815104] RBP: 00007ffb6d6c4360 R08: 000000000000000d R09: 0000000000000000 [ 35.815107] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffb6d6c43f0 [ 35.815111] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.815116] Modules linked in: [ 35.815122] CR2: ffff888001000030 [ 35.815129] ---[ end trace 1f6436287063ab0f ]--- [ 35.815137] RIP: 0010:bitfill_aligned+0x17f/0x200 [ 35.815143] Code: 49 01 c5 e8 23 c4 c7 fd 41 8d 6f ff 31 ff 44 89 fe e8 85 c5 c7 fd 45 85 ff 74 28 4d 89 ec e8 08 c4 c7 fd 4c 89 e0 49 83 c4 08 <48> 89 18 31 ff 89 ee 83 ed 01 e8 62 c5 c7 fd 83 fd ff 75 e0 4f 8d [ 35.815147] RSP: 0018:ffff8880b140f2b0 EFLAGS: 00010282 [ 35.815151] RAX: ffff888001000030 RBX: 0000000000000000 RCX: ffffffff839ac15b [ 35.815155] RDX: 0000000000000000 RSI: ffffffff839ac168 RDI: 0000000000000005 [ 35.815159] RBP: 0000000000000001 R08: 0000000000000080 R09: 0000000000000000 [ 35.815163] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888001000038 [ 35.815166] R13: ffff888001000030 R14: 0000000000000000 R15: 0000000000000002 [ 35.815172] FS: 0000555556491300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.815176] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.815180] CR2: ffff888001000030 CR3: 000000009a26c000 CR4: 00000000003406e0 [ 35.815185] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.815189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.815193] Kernel panic - not syncing: Fatal exception [ 35.815475] Kernel Offset: disabled [ 36.395463] Rebooting in 86400 seconds..