BUG: unable to handle page fault for address: ffffffff0000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 9a70067 P4D 9a70067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 22782 Comm: syz-executor.5 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline] RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline] RIP: 0010:delete_char drivers/tty/vt/vt.c:853 [inline] RIP: 0010:csi_P drivers/tty/vt/vt.c:1985 [inline] RIP: 0010:do_con_trol+0x410/0x61b0 drivers/tty/vt/vt.c:2379 Code: 03 00 00 41 8b 94 24 34 03 00 00 41 0f b7 84 24 c8 03 00 00 48 29 ca 48 2b 95 e8 fe ff ff 44 89 f9 d1 e9 48 01 d2 48 8d 3c 13 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 RSP: 0018:ffffc90004fd78b0 EFLAGS: 00010287 RAX: 0000000000000720 RBX: 000000010000000e RCX: 0000000000000001 RDX: fffffffe00000000 RSI: 0000000100000010 RDI: ffffffff0000000e RBP: ffffc90004fd79d0 R08: ffff8880931ec1c0 R09: ffff8880931eca50 R10: fffffbfff154b530 R11: ffffffff8aa5a987 R12: ffff88809f524000 R13: ffff88809f52438c R14: ffff88809f524334 R15: 0000000000000002 FS: 00007f15e7b01700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff0000000e CR3: 000000009c83e000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_con_write.part.0+0xfd9/0x1ef0 drivers/tty/vt/vt.c:2797 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 __vfs_write+0x8a/0x110 fs/read_write.c:494 vfs_write+0x268/0x5d0 fs/read_write.c:558 ksys_write+0x14f/0x290 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:620 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c449 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f15e7b00c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f15e7b016d4 RCX: 000000000045c449 RDX: 0000000000000006 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000cb2 R14: 00000000004ce9a7 R15: 000000000076bf2c Modules linked in: CR2: ffffffff0000000e ---[ end trace f6b89e06b115ee1d ]--- RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline] RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline] RIP: 0010:delete_char drivers/tty/vt/vt.c:853 [inline] RIP: 0010:csi_P drivers/tty/vt/vt.c:1985 [inline] RIP: 0010:do_con_trol+0x410/0x61b0 drivers/tty/vt/vt.c:2379 Code: 03 00 00 41 8b 94 24 34 03 00 00 41 0f b7 84 24 c8 03 00 00 48 29 ca 48 2b 95 e8 fe ff ff 44 89 f9 d1 e9 48 01 d2 48 8d 3c 13 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 RSP: 0018:ffffc90004fd78b0 EFLAGS: 00010287 RAX: 0000000000000720 RBX: 000000010000000e RCX: 0000000000000001 RDX: fffffffe00000000 RSI: 0000000100000010 RDI: ffffffff0000000e RBP: ffffc90004fd79d0 R08: ffff8880931ec1c0 R09: ffff8880931eca50 R10: fffffbfff154b530 R11: ffffffff8aa5a987 R12: ffff88809f524000 R13: ffff88809f52438c R14: ffff88809f524334 R15: 0000000000000002 FS: 00007f15e7b01700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff0000000e CR3: 000000009c83e000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400