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: 15715 Comm: syz-executor.1 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_con_write+0x979/0x7400 drivers/tty/vt/vt.c:2786
Code: a4 24 ca 00 00 00 44 01 e5 e8 b3 eb 85 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
RSP: 0018:ffffc900019878b0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffc9000432a000
RDX: 0000000000040000 RSI: ffffffff83edd0dd RDI: 0000000000000003
RBP: 000000000000075e R08: 0000000000000001 R09: ffff8880986f6e08
R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000e
R13: 0000000000000000 R14: ffff888097fd2000 R15: ffff888097fd23dc
FS:  00007fe7ccdef700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 000000008fe63000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 con_put_char+0x96/0xe0 drivers/tty/vt/vt.c:3169
 tty_put_char+0xb7/0x150 drivers/tty/tty_io.c:3031
 __process_echoes+0x577/0x9f0 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+0xb88/0x2bc0 drivers/tty/n_tty.c:1742
 tiocsti drivers/tty/tty_io.c:2196 [inline]
 tty_ioctl+0xf2e/0x15f0 drivers/tty/tty_io.c:2572
 vfs_ioctl fs/ioctl.c:48 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:753
 __do_sys_ioctl fs/ioctl.c:762 [inline]
 __se_sys_ioctl fs/ioctl.c:760 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c369
Code: Bad RIP value.
RSP: 002b:00007fe7ccdeec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000017bc0 RCX: 000000000045c369
RDX: 0000000020000080 RSI: 0000000000005412 RDI: 0000000000000003
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd3874225f R14: 00007fe7ccdef9c0 R15: 000000000078bf0c
Modules linked in:
---[ end trace f3509bfe553ae768 ]---
RIP: 0010:do_con_write+0x979/0x7400 drivers/tty/vt/vt.c:2786
Code: a4 24 ca 00 00 00 44 01 e5 e8 b3 eb 85 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
RSP: 0018:ffffc900019878b0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffc9000432a000
RDX: 0000000000040000 RSI: ffffffff83edd0dd RDI: 0000000000000003
RBP: 000000000000075e R08: 0000000000000001 R09: ffff8880986f6e08
R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000e
R13: 0000000000000000 R14: ffff888097fd2000 R15: ffff888097fd23dc
FS:  00007fe7ccdef700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbef003c028 CR3: 000000008fe63000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400