Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   55.797384][ T6830] general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN
[   55.797396][ T6830] KASAN: maybe wild-memory-access in range [0x0000000100000008-0x000000010000000f]
[   55.797409][ T6830] CPU: 0 PID: 6830 Comm: syz-executor922 Not tainted 5.8.0-rc3-syzkaller #0
[   55.797416][ T6830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.797433][ T6830] RIP: 0010:do_con_write+0x979/0x7400
[   55.797445][ T6830] 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
[   55.797452][ T6830] RSP: 0018:ffffc900014779f8 EFLAGS: 00010203
[   55.797462][ T6830] RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9d2a
[   55.797469][ T6830] RDX: ffff8880a918a1c0 RSI: ffffffff83ed9d6d RDI: 0000000000000003
[   55.797477][ T6830] RBP: 00000000000007fe R08: ffffffff83ec99f0 R09: ffff8880a918aa88
[   55.797484][ T6830] R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c
[   55.797491][ T6830] R13: 0000000000000000 R14: ffff888094adf000 R15: ffff888094adf3dc
[   55.797512][ T6830] FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000008e69840
[   55.797520][ T6830] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   55.797526][ T6830] CR2: 0000000020000180 CR3: 000000009fda4000 CR4: 00000000001406f0
[   55.797536][ T6830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   55.797542][ T6830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   55.797546][ T6830] Call Trace:
[   55.797564][ T6830]  ? match_held_lock+0x160/0x170
[   55.797579][ T6830]  ? reset_palette+0x180/0x180
[   55.797593][ T6830]  ? mark_lock+0xbc/0x1710
[   55.797607][ T6830]  ? mark_held_locks+0x9f/0xe0
[   55.797619][ T6830]  ? _raw_spin_unlock_irqrestore+0x62/0xe0
[   55.797630][ T6830]  con_write+0x22/0xb0
[   55.797640][ T6830]  n_tty_write+0x3ce/0xf80
[   55.797657][ T6830]  ? n_tty_receive_char_lnext+0x700/0x700
[   55.797670][ T6830]  ? __init_waitqueue_head+0x110/0x110
[   55.797683][ T6830]  ? __might_fault+0x190/0x1d0
[   55.797699][ T6830]  tty_write+0x4d9/0x870
[   55.797710][ T6830]  ? n_tty_receive_char_lnext+0x700/0x700
[   55.797725][ T6830]  ? tty_read+0x290/0x290
[   55.797736][ T6830]  __vfs_write+0x76/0x100
[   55.797748][ T6830]  vfs_write+0x268/0x5d0
[   55.797761][ T6830]  ksys_write+0x12d/0x250
[   55.797771][ T6830]  ? __ia32_sys_read+0xb0/0xb0
[   55.797783][ T6830]  ? lock_is_held_type+0xb0/0xe0
[   55.797794][ T6830]  ? do_fast_syscall_32+0x40/0x120
[   55.797810][ T6830]  do_syscall_32_irqs_on+0x3f/0x60
[   55.797824][ T6830]  do_fast_syscall_32+0x7f/0x120
[   55.797837][ T6830]  entry_SYSENTER_compat+0x6d/0x7c
[   55.797846][ T6830] RIP: 0023:0xf7fed569
[   55.797849][ T6830] Code: Bad RIP value.
[   55.797854][ T6830] RSP: 002b:00000000ffa7dd0c EFLAGS: 00000246 ORIG_RAX: 0000000000000004
[   55.797864][ T6830] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000240
[   55.797870][ T6830] RDX: 0000000000001006 RSI: 00000000080ec00c RDI: 0000000000000000
[   55.797877][ T6830] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   55.797883][ T6830] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   55.797889][ T6830] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   55.797898][ T6830] Modules linked in:
[   55.797914][ T6830] ---[ end trace e00995cc1af6410f ]---
[   55.797925][ T6830] RIP: 0010:do_con_write+0x979/0x7400
[   55.797937][ T6830] 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
[   55.797944][ T6830] RSP: 0018:ffffc900014779f8 EFLAGS: 00010203
[   55.797953][ T6830] RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9d2a
[   55.797960][ T6830] RDX: ffff8880a918a1c0 RSI: ffffffff83ed9d6d RDI: 0000000000000003
[   55.797967][ T6830] RBP: 00000000000007fe R08: ffffffff83ec99f0 R09: ffff8880a918aa88
[   55.797973][ T6830] R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c
[   55.797979][ T6830] R13: 0000000000000000 R14: ffff888094adf000 R15: ffff888094adf3dc
[   55.797989][ T6830] FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000008e69840
[   55.797996][ T6830] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   55.798003][ T6830] CR2: 0000000020000180 CR3: 000000009fda4000 CR4: 00000000001406f0
[   55.798010][ T6830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   55.798016][ T6830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   55.798022][ T6830] Kernel panic - not syncing: Fatal exception
[   55.799091][ T6830] Kernel Offset: disabled
[   56.243724][ T6830] Rebooting in 86400 seconds..