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: 1 PID: 9797 Comm: syz-executor263 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 cd 71 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:ffffc9000202f828 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8540
RDX: 0000000000000000 RSI: ffffffff83ed8593 RDI: 0000000000000003
RBP: ffffc9000202f9b8 R08: ffff88809145a380 R09: ffff88809145ac10
R10: fffffbfff14f69d8 R11: ffffffff8a7b4ec7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880a6d56000 R15: 0000000000000764
FS:  0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009b05840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020001440 CR3: 000000009eb2a000 CR4: 00000000001406e0
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
 compat_writev+0x1f1/0x390 fs/read_write.c:1295
 do_compat_writev+0xf5/0x1f0 fs/read_write.c:1316
 __do_compat_sys_writev fs/read_write.c:1327 [inline]
 __se_compat_sys_writev fs/read_write.c:1323 [inline]
 __ia32_compat_sys_writev+0x74/0xb0 fs/read_write.c:1323
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f159a9
Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffc39b7c EFLAGS: 00000246 ORIG_RAX: 0000000000000092
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020001440
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 00000000ffc39c94
RBP: 00000000ffc39c9c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 9e7ccf548b0f19b6 ]---
RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 drivers/tty/vt/vt.c:2760
Code: 7e fe ff ff 45 01 ef e8 cd 71 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:ffffc9000202f828 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8540
RDX: 0000000000000000 RSI: ffffffff83ed8593 RDI: 0000000000000003
RBP: ffffc9000202f9b8 R08: ffff88809145a380 R09: ffff88809145ac10
R10: fffffbfff14f69d8 R11: ffffffff8a7b4ec7 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880a6d56000 R15: 0000000000000764
FS:  0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009b05840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020001440 CR3: 000000009eb2a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400