general protection fault, probably for non-canonical address 0xdffffc001fffffe9: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000ffffff48-0x00000000ffffff4f]
CPU: 1 PID: 7169 Comm: syz-executor973 Not tainted 5.7.0-rc1-next-20200415-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_con_write.part.0+0x9a3/0x1dc0 drivers/tty/vt/vt.c:2780
Code: 24 ae 00 00 00 45 01 ef e8 2a 2c 88 fd 48 8b 44 24 60 80 38 00 0f 85 af 11 00 00 49 8b 9c 24 f0 03 00 00 48 89 d8 48 c1 e8 03 <0f> b6 14 28 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e6
RSP: 0018:ffffc90001727a58 EFLAGS: 00010202
RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffffffff83eb0816
RDX: 0000000000000000 RSI: ffffffff83eb0866 RDI: 0000000000000003
RBP: dffffc0000000000 R08: ffff888090be8080 R09: fffffbfff15169c1
R10: ffffffff8a8b4e07 R11: fffffbfff15169c0 R12: ffff8880a8672000
R13: 0000000000000000 R14: ffff8880a86723dc R15: 0000000000000778
FS:  0000000000801880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ef16025180 CR3: 000000009ecd0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:2587 [inline]
 con_write+0x41/0xe0 drivers/tty/vt/vt.c:3153
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x3f0/0xf90 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x495/0x800 drivers/tty/tty_io.c:1046
 __vfs_write+0x76/0x100 fs/read_write.c:495
 vfs_write+0x268/0x5d0 fs/read_write.c:559
 ksys_write+0x12d/0x250 fs/read_write.c:612
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x441699
Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd3528d058 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441699
RDX: 0000000000000320 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00000000006cc018 R08: 000000000000000e R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402410
R13: 00000000004024a0 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 93389c7790f1c7d4 ]---
RIP: 0010:do_con_write.part.0+0x9a3/0x1dc0 drivers/tty/vt/vt.c:2780
Code: 24 ae 00 00 00 45 01 ef e8 2a 2c 88 fd 48 8b 44 24 60 80 38 00 0f 85 af 11 00 00 49 8b 9c 24 f0 03 00 00 48 89 d8 48 c1 e8 03 <0f> b6 14 28 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e6
RSP: 0018:ffffc90001727a58 EFLAGS: 00010202
RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffffffff83eb0816
RDX: 0000000000000000 RSI: ffffffff83eb0866 RDI: 0000000000000003
RBP: dffffc0000000000 R08: ffff888090be8080 R09: fffffbfff15169c1
R10: ffffffff8a8b4e07 R11: fffffbfff15169c0 R12: ffff8880a8672000
R13: 0000000000000000 R14: ffff8880a86723dc R15: 0000000000000778
FS:  0000000000801880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ef16025180 CR3: 000000009ecd0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400