Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.14' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   55.077591][ T6809] general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN
[   55.077601][ T6809] KASAN: probably user-memory-access in range [0x0000000100000008-0x000000010000000f]
[   55.077613][ T6809] CPU: 0 PID: 6809 Comm: syz-executor515 Not tainted 5.8.0-rc3-syzkaller #0
[   55.077620][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.077634][ T6809] RIP: 0010:do_con_write+0x979/0x7400
[   55.077646][ T6809] Code: a4 24 ca 00 00 00 44 01 e5 e8 b3 19 86 fd 48 8b 44 24 50 80 38 00 0f 85 28 27 00 00 4d 8b a6 f0 03 00 00 4c 89 e0 48 c1 e8 03 <0f> b6 14 18 4c 89 e0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 13
[   55.077653][ T6809] RSP: 0018:ffffc900015f7a10 EFLAGS: 00010203
[   55.077663][ T6809] RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9d2a
[   55.077670][ T6809] RDX: ffff888097ed00c0 RSI: ffffffff83ed9d6d RDI: 0000000000000003
[   55.077677][ T6809] RBP: 00000000000007fe R08: ffffffff83ec99f0 R09: ffff888097ed0988
[   55.077683][ T6809] R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c
[   55.077690][ T6809] R13: 0000000000000000 R14: ffff8880a7c23000 R15: ffff8880a7c233dc
[   55.077699][ T6809] FS:  0000000001c42880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
[   55.077707][ T6809] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   55.077713][ T6809] CR2: 00000000004553a0 CR3: 00000000933a8000 CR4: 00000000001406f0
[   55.077724][ T6809] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   55.077731][ T6809] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   55.077734][ T6809] Call Trace:
[   55.077752][ T6809]  ? match_held_lock+0x160/0x170
[   55.077768][ T6809]  ? reset_palette+0x180/0x180
[   55.077781][ T6809]  ? mark_lock+0xbc/0x1710
[   55.077795][ T6809]  ? mark_held_locks+0x9f/0xe0
[   55.077807][ T6809]  ? _raw_spin_unlock_irqrestore+0x62/0xe0
[   55.077818][ T6809]  con_write+0x22/0xb0
[   55.077830][ T6809]  n_tty_write+0x3ce/0xf80
[   55.077847][ T6809]  ? n_tty_receive_char_lnext+0x700/0x700
[   55.077860][ T6809]  ? __init_waitqueue_head+0x110/0x110
[   55.077872][ T6809]  ? __might_fault+0x190/0x1d0
[   55.077886][ T6809]  tty_write+0x4d9/0x870
[   55.077898][ T6809]  ? n_tty_receive_char_lnext+0x700/0x700
[   55.077912][ T6809]  ? tty_read+0x290/0x290
[   55.077922][ T6809]  __vfs_write+0x76/0x100
[   55.077934][ T6809]  vfs_write+0x268/0x5d0
[   55.077947][ T6809]  ksys_write+0x12d/0x250
[   55.077958][ T6809]  ? __ia32_sys_read+0xb0/0xb0
[   55.077969][ T6809]  ? lock_is_held_type+0xb0/0xe0
[   55.077981][ T6809]  ? do_syscall_64+0x1c/0xe0
[   55.077992][ T6809]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   55.078004][ T6809]  do_syscall_64+0x60/0xe0
[   55.078016][ T6809]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.078024][ T6809] RIP: 0033:0x440459
[   55.078028][ T6809] Code: Bad RIP value.
[   55.078034][ T6809] RSP: 002b:00007ffcfdc533b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   55.078044][ T6809] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440459
[   55.078051][ T6809] RDX: 0000000000001006 RSI: 0000000020000240 RDI: 0000000000000004
[   55.078058][ T6809] RBP: 00000000006cb018 R08: 000000000000000e R09: 00000000004002c8
[   55.078064][ T6809] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401d40
[   55.078071][ T6809] R13: 0000000000401dd0 R14: 0000000000000000 R15: 0000000000000000
[   55.078079][ T6809] Modules linked in:
[   55.078093][ T6809] ---[ end trace f58ed3c6d5e3d8c2 ]---
[   55.078105][ T6809] RIP: 0010:do_con_write+0x979/0x7400
[   55.078116][ T6809] Code: a4 24 ca 00 00 00 44 01 e5 e8 b3 19 86 fd 48 8b 44 24 50 80 38 00 0f 85 28 27 00 00 4d 8b a6 f0 03 00 00 4c 89 e0 48 c1 e8 03 <0f> b6 14 18 4c 89 e0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 13
[   55.078123][ T6809] RSP: 0018:ffffc900015f7a10 EFLAGS: 00010203
[   55.078132][ T6809] RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9d2a
[   55.078139][ T6809] RDX: ffff888097ed00c0 RSI: ffffffff83ed9d6d RDI: 0000000000000003
[   55.078146][ T6809] RBP: 00000000000007fe R08: ffffffff83ec99f0 R09: ffff888097ed0988
[   55.078153][ T6809] R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c
[   55.078160][ T6809] R13: 0000000000000000 R14: ffff8880a7c23000 R15: ffff8880a7c233dc
[   55.078170][ T6809] FS:  0000000001c42880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
[   55.078177][ T6809] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   55.078184][ T6809] CR2: 00000000004553a0 CR3: 00000000933a8000 CR4: 00000000001406f0
[   55.078191][ T6809] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   55.078198][ T6809] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   55.078203][ T6809] Kernel panic - not syncing: Fatal exception
[   55.079576][ T6809] Kernel Offset: disabled
[   55.525953][ T6809] Rebooting in 86400 seconds..