[ 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 '10.128.1.46' (ECDSA) to the list of known hosts. syzkaller login: [ 68.600629][ T28] audit: type=1400 audit(1595697976.973:8): avc: denied { execmem } for pid=6827 comm="syz-executor637" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 68.680757][ T2499] divide_error: 0000 [#1] PREEMPT SMP KASAN [ 68.680773][ T2499] CPU: 1 PID: 2499 Comm: kworker/1:2 Not tainted 5.8.0-rc6-syzkaller #0 [ 68.680780][ T2499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.680795][ T2499] Workqueue: events console_callback [ 68.680814][ T2499] RIP: 0010:fbcon_switch+0x1fe/0x16c0 [ 68.680827][ T2499] Code: 2d 07 89 7f 09 48 89 2d 80 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 86 ef b2 fd 41 83 fe 05 0f 8e c3 09 00 00 [ 68.680834][ T2499] RSP: 0018:ffffc900080379a0 EFLAGS: 00010246 [ 68.680844][ T2499] RAX: 0000000000008000 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.680852][ T2499] RDX: 0000000000000000 RSI: ffffffff83c0c90d RDI: 0000000000000005 [ 68.680860][ T2499] RBP: ffff8880a3130000 R08: 0000000000000000 R09: ffffffff8aaed307 [ 68.680867][ T2499] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a27e4000 [ 68.680875][ T2499] R13: ffff8880a309a000 R14: 0000000000008000 R15: ffffffff8898f520 [ 68.680885][ T2499] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.680893][ T2499] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.680901][ T2499] CR2: 00000000004553d0 CR3: 00000000a6d90000 CR4: 00000000001406e0 [ 68.680915][ T2499] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.680923][ T2499] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.680926][ T2499] Call Trace: [ 68.680944][ T2499] ? fbcon_scroll+0x3600/0x3600 [ 68.680958][ T2499] ? mark_lock+0xbc/0x1710 [ 68.680973][ T2499] ? mark_held_locks+0x9f/0xe0 [ 68.680989][ T2499] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 68.681003][ T2499] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.681016][ T2499] ? trace_hardirqs_on+0x5f/0x220 [ 68.681028][ T2499] ? lockdep_hardirqs_on+0x6a/0xe0 [ 68.681041][ T2499] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 68.681056][ T2499] ? is_console_locked+0x5/0x10 [ 68.681068][ T2499] ? fbcon_set_origin+0x26/0x50 [ 68.681084][ T2499] redraw_screen+0x2ae/0x770 [ 68.681097][ T2499] ? lock_acquire+0x161/0xad0 [ 68.681110][ T2499] ? vc_init+0x440/0x440 [ 68.681125][ T2499] ? fb_get_color_depth+0x11a/0x240 [ 68.681141][ T2499] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 68.681207][ T2499] complete_change_console+0xff/0x610 [ 68.681220][ T2499] ? fbcon_cursor+0x52b/0x650 [ 68.681232][ T2499] change_console+0x19c/0x560 [ 68.681246][ T2499] console_callback+0x3b1/0x410 [ 68.681258][ T2499] ? poke_blanked_console+0x270/0x270 [ 68.681270][ T2499] ? _raw_spin_unlock_irq+0x1f/0x80 [ 68.681282][ T2499] ? lock_is_held_type+0xb0/0xe0 [ 68.681299][ T2499] process_one_work+0x94c/0x1670 [ 68.681315][ T2499] ? lock_release+0x8d0/0x8d0 [ 68.681329][ T2499] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 68.681343][ T2499] ? rwlock_bug.part.0+0x90/0x90 [ 68.681356][ T2499] ? lockdep_hardirqs_off+0x66/0xa0 [ 68.681371][ T2499] worker_thread+0x64c/0x1120 [ 68.681389][ T2499] ? __kthread_parkme+0x13f/0x1e0 [ 68.681402][ T2499] ? process_one_work+0x1670/0x1670 [ 68.681415][ T2499] kthread+0x3b5/0x4a0 [ 68.681427][ T2499] ? __kthread_bind_mask+0xc0/0xc0 [ 68.681439][ T2499] ? __kthread_bind_mask+0xc0/0xc0 [ 68.681455][ T2499] ret_from_fork+0x1f/0x30 [ 68.681479][ T2499] Modules linked in: [ 68.681497][ T2499] ---[ end trace 5c8f54a6611b7031 ]--- [ 68.681511][ T2499] RIP: 0010:fbcon_switch+0x1fe/0x16c0 [ 68.681523][ T2499] Code: 2d 07 89 7f 09 48 89 2d 80 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 86 ef b2 fd 41 83 fe 05 0f 8e c3 09 00 00 [ 68.681530][ T2499] RSP: 0018:ffffc900080379a0 EFLAGS: 00010246 [ 68.681540][ T2499] RAX: 0000000000008000 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.681547][ T2499] RDX: 0000000000000000 RSI: ffffffff83c0c90d RDI: 0000000000000005 [ 68.681555][ T2499] RBP: ffff8880a3130000 R08: 0000000000000000 R09: ffffffff8aaed307 [ 68.681562][ T2499] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a27e4000 [ 68.681570][ T2499] R13: ffff8880a309a000 R14: 0000000000008000 R15: ffffffff8898f520 [ 68.681580][ T2499] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.681588][ T2499] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.681596][ T2499] CR2: 00000000004553d0 CR3: 00000000a6d90000 CR4: 00000000001406e0 [ 68.681607][ T2499] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.681620][ T2499] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.681627][ T2499] Kernel panic - not syncing: Fatal exception [ 68.682943][ T2499] Kernel Offset: disabled [ 69.139337][ T2499] Rebooting in 86400 seconds..