general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x0000000100000008-0x000000010000000f]
CPU: 0 PID: 6770 Comm: syz-executor124 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_con_write+0x1a6a/0xf2d0 drivers/tty/vt/vt.c:2786
Code: 02 00 00 48 8b 7c 24 60 49 89 ff 49 c1 ef 03 43 80 3c 2f 00 74 0a e8 15 99 b4 fd 48 8b 7c 24 60 48 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c5 02 00 00 66 44 89 33 48 c7 c7 5c 4c
RSP: 0018:ffffc900015f78a0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffff888091aa20c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a68cf3f0
RBP: ffffc900015f7b90 R08: ffffffff83feea21 R09: ffffffff83fd1650
R10: 0000000000000006 R11: ffff888091aa20c0 R12: ffff8880a68cf000
R13: dffffc0000000000 R14: 000000000000075e R15: 1ffff11014d19e7e
FS:  00000000015d5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004553a0 CR3: 00000000a075a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 con_put_char+0x7d/0xc0 drivers/tty/vt/vt.c:3169
 tty_put_char+0x97/0x110 drivers/tty/tty_io.c:3031
 __process_echoes+0x45e/0x930 drivers/tty/n_tty.c:728
 flush_echoes drivers/tty/n_tty.c:829 [inline]
 __receive_buf drivers/tty/n_tty.c:1648 [inline]
 n_tty_receive_buf_common+0x29fa/0x3100 drivers/tty/n_tty.c:1742
 tiocsti drivers/tty/tty_io.c:2196 [inline]
 tty_ioctl+0xd5b/0x15c0 drivers/tty/tty_io.c:2572
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl fs/ioctl.c:771 [inline]
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl+0xf9/0x160 fs/ioctl.c:778
 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x440459
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffcfd1657f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440459
RDX: 00000000200000c0 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 000000000000000e R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401d40
R13: 0000000000401dd0 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 3e5740fb3d6790fd ]---
RIP: 0010:do_con_write+0x1a6a/0xf2d0 drivers/tty/vt/vt.c:2786
Code: 02 00 00 48 8b 7c 24 60 49 89 ff 49 c1 ef 03 43 80 3c 2f 00 74 0a e8 15 99 b4 fd 48 8b 7c 24 60 48 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c5 02 00 00 66 44 89 33 48 c7 c7 5c 4c
RSP: 0018:ffffc900015f78a0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffff888091aa20c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a68cf3f0
RBP: ffffc900015f7b90 R08: ffffffff83feea21 R09: ffffffff83fd1650
R10: 0000000000000006 R11: ffff888091aa20c0 R12: ffff8880a68cf000
R13: dffffc0000000000 R14: 000000000000075e R15: 1ffff11014d19e7e
FS:  00000000015d5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004553a0 CR3: 00000000a075a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400