kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9514 Comm: syz-executor998 Not tainted 5.5.0-rc7-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:2760
Code: 7e fe ff ff 45 01 ef e8 fd 70 87 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:ffffc90002077828 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8610
RDX: 0000000000000000 RSI: ffffffff83ed8663 RDI: 0000000000000003
RBP: ffffc900020779b8 R08: ffff8880913785c0 R09: ffff888091378e50
R10: fffffbfff14f66d8 R11: ffffffff8a7b36c7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888097bda000 R15: 0000000000000764
FS:  0000000000f2d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001440 CR3: 0000000093652000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:2565 [inline]
 con_write+0x46/0xd0 drivers/tty/vt/vt.c:3135
 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
 do_loop_readv_writev fs/read_write.c:717 [inline]
 do_loop_readv_writev fs/read_write.c:701 [inline]
 do_iter_write fs/read_write.c:972 [inline]
 do_iter_write+0x4a0/0x610 fs/read_write.c:951
 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015
 do_writev+0x15b/0x330 fs/read_write.c:1058
 __do_sys_writev fs/read_write.c:1131 [inline]
 __se_sys_writev fs/read_write.c:1128 [inline]
 __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441509
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:00007ffff60ed758 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441509
RDX: 0000000000000001 RSI: 0000000020001440 RDI: 0000000000000003
RBP: 00000000006cc018 R08: 000000000000000e R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402280
R13: 0000000000402310 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 4892bb1d9eb42968 ]---
RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 drivers/tty/vt/vt.c:2760
Code: 7e fe ff ff 45 01 ef e8 fd 70 87 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:ffffc90002077828 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8610
RDX: 0000000000000000 RSI: ffffffff83ed8663 RDI: 0000000000000003
RBP: ffffc900020779b8 R08: ffff8880913785c0 R09: ffff888091378e50
R10: fffffbfff14f66d8 R11: ffffffff8a7b36c7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888097bda000 R15: 0000000000000764
FS:  0000000000f2d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001440 CR3: 0000000093652000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400