BUG: unable to handle page fault for address: 000000010000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 356b9067 P4D 356b9067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 26644 Comm: syz-executor.1 Not tainted 5.7.0-rc5-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 drivers/tty/vt/vt.c:846 [inline] RIP: 0010:csi_at drivers/tty/vt/vt.c:1992 [inline] RIP: 0010:do_con_trol drivers/tty/vt/vt.c:2459 [inline] RIP: 0010:do_con_write+0x8985/0xf2d0 drivers/tty/vt/vt.c:2823 Code: 00 00 fc ff df 8a 04 08 84 c0 0f 85 36 52 00 00 48 8b 84 24 a0 00 00 00 0f b7 00 41 81 e7 ff ff ff 7f 4c 89 f9 48 8b 7c 24 38 66 ab 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 48 8a 04 01 84 RSP: 0018:ffffc90006127850 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc90006127b38 R08: 000000010000000e R09: ffffffff83fc3826 R10: ffff88802fcd61c0 R11: 000000000000001c R12: 0000000000000000 R13: 00000000ffffffff R14: 0000000100000010 R15: 0000000000000001 FS: 00007f6a01fff700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 0000000049b71000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: con_put_char+0x7d/0xc0 drivers/tty/vt/vt.c:3169 tty_put_char+0x97/0x110 drivers/tty/tty_io.c:3031 do_output_char+0x586/0x940 drivers/tty/n_tty.c:488 process_output drivers/tty/n_tty.c:514 [inline] n_tty_write+0xd5c/0x1170 drivers/tty/n_tty.c:2345 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x593/0x940 drivers/tty/tty_io.c:1046 __vfs_write+0xa7/0x710 fs/read_write.c:495 vfs_write+0x274/0x580 fs/read_write.c:559 ksys_write+0x11b/0x220 fs/read_write.c:612 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45c829 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:00007f6a01ffec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000050c660 RCX: 000000000045c829 RDX: 0000000000000078 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000cea R14: 00000000004cf16f R15: 00007f6a01fff6d4 Modules linked in: CR2: 000000010000000e ---[ end trace 7897e76f95cbf324 ]--- 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 drivers/tty/vt/vt.c:846 [inline] RIP: 0010:csi_at drivers/tty/vt/vt.c:1992 [inline] RIP: 0010:do_con_trol drivers/tty/vt/vt.c:2459 [inline] RIP: 0010:do_con_write+0x8985/0xf2d0 drivers/tty/vt/vt.c:2823 Code: 00 00 fc ff df 8a 04 08 84 c0 0f 85 36 52 00 00 48 8b 84 24 a0 00 00 00 0f b7 00 41 81 e7 ff ff ff 7f 4c 89 f9 48 8b 7c 24 38 66 ab 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 48 8a 04 01 84 RSP: 0018:ffffc90006127850 EFLAGS: 00010202 RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc90006127b38 R08: 000000010000000e R09: ffffffff83fc3826 R10: ffff88802fcd61c0 R11: 000000000000001c R12: 0000000000000000 R13: 00000000ffffffff R14: 0000000100000010 R15: 0000000000000001 FS: 00007f6a01fff700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 0000000049b71000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400