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: 6809 Comm: syz-executor114 Not tainted 5.8.0-rc3-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 33 19 86 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:ffffc900015b7a10 EFLAGS: 00010203 RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9dea RDX: ffff8880a6670340 RSI: ffffffff83ed9e2d RDI: 0000000000000003 RBP: 00000000000007fe R08: ffffffff83ec9ab0 R09: ffff8880a6670c08 R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c R13: 0000000000000000 R14: ffff8880a0fc2000 R15: ffff8880a0fc23dc FS: 00000000019e2880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004553a0 CR3: 00000000a719c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: con_write+0x22/0xb0 drivers/tty/vt/vt.c:3159 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0x3ce/0xf80 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x4d9/0x870 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+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x440459 Code: Bad RIP value. RSP: 002b:00007fff90c82ed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440459 RDX: 0000000000001006 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00000000006cb018 R08: 000000000000000e R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401d40 R13: 0000000000401dd0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 6919ddc96f69345e ]--- RIP: 0010:do_con_write+0x979/0x7400 drivers/tty/vt/vt.c:2786 Code: a4 24 ca 00 00 00 44 01 e5 e8 33 19 86 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:ffffc900015b7a10 EFLAGS: 00010203 RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffffff83ed9dea RDX: ffff8880a6670340 RSI: ffffffff83ed9e2d RDI: 0000000000000003 RBP: 00000000000007fe R08: ffffffff83ec9ab0 R09: ffff8880a6670c08 R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000c R13: 0000000000000000 R14: ffff8880a0fc2000 R15: ffff8880a0fc23dc FS: 00000000019e2880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004553a0 CR3: 00000000a719c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400