[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ 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 '10.128.0.207' (ECDSA) to the list of known hosts. syzkaller login: [ 59.120570][ T3892] divide_error: 0000 [#1] PREEMPT SMP KASAN [ 59.120586][ T3892] CPU: 0 PID: 3892 Comm: kworker/0:8 Not tainted 5.8.0-rc6-syzkaller #0 [ 59.120594][ T3892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.120610][ T3892] Workqueue: events console_callback [ 59.120629][ T3892] RIP: 0010:fbcon_switch+0x1fe/0x16c0 [ 59.120642][ T3892] Code: 2d 97 88 7f 09 48 89 2d 10 88 7f 09 38 ca 7c 08 84 c9 0f 85 7d 13 00 00 41 8b 9c 24 8c 03 00 00 44 89 f0 31 d2 bf 05 00 00 00 f3 41 89 c6 89 c6 e8 16 ef b2 fd 41 83 fe 05 0f 8e c3 09 00 00 [ 59.120649][ T3892] RSP: 0018:ffffc9000e0df9a0 EFLAGS: 00010246 [ 59.120659][ T3892] RAX: 0000000000008000 RBX: 0000000000000000 RCX: 0000000000000000 [ 59.120667][ T3892] RDX: 0000000000000000 RSI: ffffffff83c0c97d RDI: 0000000000000005 [ 59.120675][ T3892] RBP: ffff8880a3b00000 R08: 0000000000000000 R09: ffffffff8aaed307 [ 59.120683][ T3892] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809ecd4000 [ 59.120691][ T3892] R13: ffff8880a3a8e000 R14: 0000000000008000 R15: ffffffff8898f520 [ 59.120702][ T3892] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 59.120710][ T3892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.120718][ T3892] CR2: 00000000004553d0 CR3: 00000000a02d5000 CR4: 00000000001406f0 [ 59.120729][ T3892] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.120735][ T3892] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.120739][ T3892] Call Trace: [ 59.120755][ T3892] ? fbcon_scroll+0x3600/0x3600 [ 59.120767][ T3892] ? mark_lock+0xbc/0x1710 [ 59.120781][ T3892] ? mark_held_locks+0x9f/0xe0 [ 59.120795][ T3892] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.120809][ T3892] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.120822][ T3892] ? trace_hardirqs_on+0x5f/0x220 [ 59.120835][ T3892] ? lockdep_hardirqs_on+0x6a/0xe0 [ 59.120848][ T3892] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 59.120862][ T3892] ? is_console_locked+0x5/0x10 [ 59.120873][ T3892] ? fbcon_set_origin+0x26/0x50 [ 59.120888][ T3892] redraw_screen+0x2ae/0x770 [ 59.120901][ T3892] ? lock_acquire+0x161/0xad0 [ 59.120914][ T3892] ? vc_init+0x440/0x440 [ 59.120930][ T3892] ? fb_get_color_depth+0x11a/0x240 [ 59.120946][ T3892] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 59.120960][ T3892] complete_change_console+0xff/0x610 [ 59.120973][ T3892] ? fbcon_cursor+0x52b/0x650 [ 59.120985][ T3892] change_console+0x19c/0x560 [ 59.120998][ T3892] console_callback+0x3b1/0x410 [ 59.121010][ T3892] ? poke_blanked_console+0x270/0x270 [ 59.121021][ T3892] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.121033][ T3892] ? lock_is_held_type+0xb0/0xe0 [ 59.121048][ T3892] process_one_work+0x94c/0x1670 [ 59.121065][ T3892] ? lock_release+0x8d0/0x8d0 [ 59.121079][ T3892] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 59.121092][ T3892] ? rwlock_bug.part.0+0x90/0x90 [ 59.121105][ T3892] ? lockdep_hardirqs_off+0x66/0xa0 [ 59.121120][ T3892] worker_thread+0x64c/0x1120 [ 59.121137][ T3892] ? process_one_work+0x1670/0x1670 [ 59.121149][ T3892] kthread+0x3b5/0x4a0 [ 59.121161][ T3892] ? __kthread_bind_mask+0xc0/0xc0 [ 59.121172][ T3892] ? __kthread_bind_mask+0xc0/0xc0 [ 59.121189][ T3892] ret_from_fork+0x1f/0x30 [ 59.121198][ T3892] Modules linked in: [ 59.121213][ T3892] ---[ end trace 32153d9fc872572c ]--- [ 59.121226][ T3892] RIP: 0010:fbcon_switch+0x1fe/0x16c0 [ 59.121237][ T3892] Code: 2d 97 88 7f 09 48 89 2d 10 88 7f 09 38 ca 7c 08 84 c9 0f 85 7d 13 00 00 41 8b 9c 24 8c 03 00 00 44 89 f0 31 d2 bf 05 00 00 00 f3 41 89 c6 89 c6 e8 16 ef b2 fd 41 83 fe 05 0f 8e c3 09 00 00 [ 59.121244][ T3892] RSP: 0018:ffffc9000e0df9a0 EFLAGS: 00010246 [ 59.121253][ T3892] RAX: 0000000000008000 RBX: 0000000000000000 RCX: 0000000000000000 [ 59.121260][ T3892] RDX: 0000000000000000 RSI: ffffffff83c0c97d RDI: 0000000000000005 [ 59.121268][ T3892] RBP: ffff8880a3b00000 R08: 0000000000000000 R09: ffffffff8aaed307 [ 59.121275][ T3892] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809ecd4000 [ 59.121282][ T3892] R13: ffff8880a3a8e000 R14: 0000000000008000 R15: ffffffff8898f520 [ 59.121293][ T3892] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 59.121302][ T3892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.121309][ T3892] CR2: 00000000004553d0 CR3: 00000000a02d5000 CR4: 00000000001406f0 [ 59.121316][ T3892] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.121323][ T3892] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.121329][ T3892] Kernel panic - not syncing: Fatal exception [ 59.122726][ T3892] Kernel Offset: disabled [ 59.570550][ T3892] Rebooting in 86400 seconds..