BUG: unable to handle page fault for address: 000000010000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 90ade067 P4D 90ade067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11072 Comm: syz-executor.3 Not tainted 5.6.0-rc1-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:insert_char+0x23d/0x400 drivers/tty/vt/vt.c:840 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e 1e 01 00 00 d1 eb 41 0f b7 85 c8 03 00 00 4c 89 ff 89 d9 66 ab 49 8d bd 78 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc900016c7858 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff11012a46679 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc900016c78a0 R08: 000000010000000e R09: ffff8880a303eed0 R10: fffffbfff154b438 R11: ffffffff8aa5a1c7 R12: 0000000000000000 R13: ffff888095233000 R14: ffff888095233334 R15: 000000010000000e FS: 00007f5a7cc44700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 00000000a6817000 CR4: 00000000001406f0 DR0: 0000000020000040 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: csi_at drivers/tty/vt/vt.c:1964 [inline] do_con_trol+0x41a6/0x61b0 drivers/tty/vt/vt.c:2431 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: 0033:0x45c6c9 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:00007f5a7cc43c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5a7cc446d4 RCX: 000000000045c6c9 RDX: 0000000000000015 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000ca8 R14: 00000000004ceba3 R15: 0000000000000001 Modules linked in: CR2: 000000010000000e ---[ end trace 7913e5d9d876f106 ]--- 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:insert_char+0x23d/0x400 drivers/tty/vt/vt.c:840 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e 1e 01 00 00 d1 eb 41 0f b7 85 c8 03 00 00 4c 89 ff 89 d9 66 ab 49 8d bd 78 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc900016c7858 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff11012a46679 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc900016c78a0 R08: 000000010000000e R09: ffff8880a303eed0 R10: fffffbfff154b438 R11: ffffffff8aa5a1c7 R12: 0000000000000000 R13: ffff888095233000 R14: ffff888095233334 R15: 000000010000000e FS: 00007f5a7cc44700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 00000000a6817000 CR4: 00000000001406f0 DR0: 0000000020000040 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600