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: 11407 Comm: syz-executor.0 Not tainted 5.8.0-rc6-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 83 f4 85 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:ffffc90018f0f4f0 EFLAGS: 00010203 RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffc90021a65000 RDX: 0000000000040000 RSI: ffffffff83edc80d RDI: 0000000000000003 RBP: 0000000000000720 R08: 0000000000000001 R09: ffff88804b5ba908 R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000e R13: 0000000000000000 R14: ffff888022a55000 R15: ffff888022a553dc FS: 00007fdc60abd700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043da30 CR3: 000000003d19d000 CR4: 00000000001426f0 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 __kernel_write+0x199/0x500 fs/read_write.c:528 write_pipe_buf+0x153/0x1f0 fs/splice.c:799 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x3dc/0x830 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] default_file_splice_write fs/splice.c:811 [inline] do_splice_from fs/splice.c:847 [inline] direct_splice_actor+0x228/0x2f0 fs/splice.c:1016 splice_direct_to_actor+0x38c/0x980 fs/splice.c:971 do_splice_direct+0x1b3/0x280 fs/splice.c:1059 do_sendfile+0x559/0xc30 fs/read_write.c:1540 __do_sys_sendfile64 fs/read_write.c:1601 [inline] __se_sys_sendfile64 fs/read_write.c:1587 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1587 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c1f9 Code: Bad RIP value. RSP: 002b:00007fdc60abcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000026080 RCX: 000000000045c1f9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000009 RBP: 000000000078bf48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000001000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 0000000000c9fb6f R14: 00007fdc60abd9c0 R15: 000000000078bf0c Modules linked in: ---[ end trace 642df328b7df8e20 ]--- RIP: 0010:do_con_write+0x979/0x7400 drivers/tty/vt/vt.c:2786 Code: a4 24 ca 00 00 00 44 01 e5 e8 83 f4 85 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:ffffc90018f0f4f0 EFLAGS: 00010203 RAX: 0000000020000001 RBX: dffffc0000000000 RCX: ffffc90021a65000 RDX: 0000000000040000 RSI: ffffffff83edc80d RDI: 0000000000000003 RBP: 0000000000000720 R08: 0000000000000001 R09: ffff88804b5ba908 R10: 0000000000000000 R11: 0000000000000000 R12: 000000010000000e R13: 0000000000000000 R14: ffff888022a55000 R15: ffff888022a553dc FS: 00007fdc60abd700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7f4026000 CR3: 000000003d19d000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400