BUG: unable to handle page fault for address: 000000010000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 945be067 P4D 945be067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 25090 Comm: syz-executor.5 Not tainted 5.6.0-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:ffffc900021178e0 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1100c7d1083 RSI: 000000010000000e RDI: 000000010000000e RBP: 0000000000000000 R08: 000000010000000e R09: fffffbfff1510319 R10: fffffbfff1510318 R11: ffffffff8a8818c7 R12: ffff888063e883dc R13: ffff888063e88384 R14: 000000010000000e R15: ffff888063e88000 FS: 00007f8f5d0c1700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 00000000880d8000 CR4: 00000000001426e0 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:494 vfs_write+0x268/0x5d0 fs/read_write.c:558 ksys_write+0x12d/0x250 fs/read_write.c:611 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45c849 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:00007f8f5d0c0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8f5d0c16d4 RCX: 000000000045c849 RDX: 0000000000000078 RSI: 00000000200000c0 RDI: 0000000000000006 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000cdc R14: 00000000004cf002 R15: 000000000076bf0c Modules linked in: CR2: 000000010000000e ---[ end trace 495714d3699750a1 ]--- 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:ffffc900021178e0 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1100c7d1083 RSI: 000000010000000e RDI: 000000010000000e RBP: 0000000000000000 R08: 000000010000000e R09: fffffbfff1510319 R10: fffffbfff1510318 R11: ffffffff8a8818c7 R12: ffff888063e883dc R13: ffff888063e88384 R14: 000000010000000e R15: ffff888063e88000 FS: 00007f8f5d0c1700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004fffb8 CR3: 00000000880d8000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400