BUG: unable to handle page fault for address: 000000010000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 910c6067 P4D 910c6067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9503 Comm: syz-executor.5 Not tainted 5.7.0-rc1-next-20200415-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+0x230/0x3f0 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 19 01 00 00 d1 eb 41 0f b7 87 18 04 00 00 4c 89 f7 89 d9 66 ab 49 8d bf d0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc900057078e0 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1101126e083 RSI: 000000010000000e RDI: 000000010000000e RBP: 0000000000000000 R08: 000000010000000e R09: fffffbfff15169c1 R10: ffffffff8a8b4e07 R11: fffffbfff15169c0 R12: ffff8880893703dc R13: ffff888089370384 R14: 000000010000000e R15: ffff888089370000 FS: 00007f7b9a405700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 00000000a6f37000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csi_at drivers/tty/vt/vt.c:1986 [inline] do_con_trol+0x3e56/0x5d10 drivers/tty/vt/vt.c:2453 do_con_write.part.0+0xf34/0x1dc0 drivers/tty/vt/vt.c:2817 do_con_write drivers/tty/vt/vt.c:2587 [inline] con_write+0x41/0xe0 drivers/tty/vt/vt.c:3153 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0x3f0/0xf90 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x495/0x800 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+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca29 Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7b9a404c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000050c8c0 RCX: 000000000045ca29 RDX: 0000000000000378 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000cea R14: 00000000004cf36f R15: 00007f7b9a4056d4 Modules linked in: CR2: 000000010000000e ---[ end trace 8f6ce4367277bf52 ]--- 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+0x230/0x3f0 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 19 01 00 00 d1 eb 41 0f b7 87 18 04 00 00 4c 89 f7 89 d9 66 ab 49 8d bf d0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc900057078e0 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1101126e083 RSI: 000000010000000e RDI: 000000010000000e RBP: 0000000000000000 R08: 000000010000000e R09: fffffbfff15169c1 R10: ffffffff8a8b4e07 R11: fffffbfff15169c0 R12: ffff8880893703dc R13: ffff888089370384 R14: 000000010000000e R15: ffff888089370000 FS: 00007f7b9a405700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 00000000a6f37000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400