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: 9808 Comm: syz-executor611 Not tainted 5.6.0-rc3-next-20200225-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 drivers/tty/vt/vt.c:2772
Code: 7e fe ff ff 45 01 ef e8 5d 44 7f fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc90001f9f9e0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f6aff0
RDX: 0000000000000000 RSI: ffffffff83f6b043 RDI: 0000000000000003
RBP: ffffc90001f9fb70 R08: ffff88809fbc8440 R09: ffff88809fbc8cd8
R10: fffffbfff154c0f8 R11: ffffffff8aa607c7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888098130000 R15: 000000000000074d
FS:  0000000001d16880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8638dbb000 CR3: 0000000091559000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:2577 [inline]
 con_write+0x46/0xd0 drivers/tty/vt/vt.c:3147
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x40e/0x1080 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x496/0x7f0 drivers/tty/tty_io.c:1046
 __vfs_write+0x8a/0x110 fs/read_write.c:494
 vfs_write+0x268/0x5d0 fs/read_write.c:558
 ksys_write+0x14f/0x290 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:620
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4403c9
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:00007fff6fe2e7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403c9
RDX: 0000000000000002 RSI: 0000000020002b40 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 000000000000000e R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401cb0
R13: 0000000000401d40 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 5cfa8ee93d24bb26 ]---
RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 drivers/tty/vt/vt.c:2772
Code: 7e fe ff ff 45 01 ef e8 5d 44 7f fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc90001f9f9e0 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f6aff0
RDX: 0000000000000000 RSI: ffffffff83f6b043 RDI: 0000000000000003
RBP: ffffc90001f9fb70 R08: ffff88809fbc8440 R09: ffff88809fbc8cd8
R10: fffffbfff154c0f8 R11: ffffffff8aa607c7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888098130000 R15: 000000000000074d
FS:  0000000001d16880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8638dbb000 CR3: 0000000091559000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400