BUG: unable to handle page fault for address: 000000010000000e #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 9de96067 P4D 9de96067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20001 Comm: syz-executor.1 Not tainted 5.6.0-rc6-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:840 [inline] RIP: 0010:csi_at drivers/tty/vt/vt.c:1975 [inline] RIP: 0010:do_con_trol drivers/tty/vt/vt.c:2442 [inline] RIP: 0010:do_con_write+0x8995/0xf2d0 drivers/tty/vt/vt.c:2808 Code: 00 00 fc ff df 8a 04 08 84 c0 0f 85 29 52 00 00 48 8b 84 24 a0 00 00 00 0f b7 00 41 81 e7 ff ff ff 7f 48 8b 7c 24 38 4c 89 f9 66 ab 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 48 8a 04 01 84 RSP: 0018:ffffc90001d0f8e0 EFLAGS: 00010202 RAX: 0000000000000e20 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc90001d0fbd0 R08: 000000010000000e R09: ffffffff83f23416 R10: ffff8880616b4640 R11: 000000000000001c R12: 0000000000000000 R13: 00000000ffffffff R14: 0000000100000010 R15: 0000000000000001 FS: 00007f5c78617700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 000000009f01d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: con_write+0x20/0x40 drivers/tty/vt/vt.c:3144 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0xcbf/0x1170 drivers/tty/n_tty.c:2333 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:494 vfs_write+0x271/0x570 fs/read_write.c:558 ksys_write+0x115/0x220 fs/read_write.c:611 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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:00007f5c78616c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5c786176d4 RCX: 000000000045c849 RDX: 0000000000000078 RSI: 00000000200001c0 RDI: 0000000000000005 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000cdc R14: 00000000004cf01a R15: 000000000076bf0c Modules linked in: CR2: 000000010000000e ---[ end trace 0cfe232aa4c13368 ]--- 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:840 [inline] RIP: 0010:csi_at drivers/tty/vt/vt.c:1975 [inline] RIP: 0010:do_con_trol drivers/tty/vt/vt.c:2442 [inline] RIP: 0010:do_con_write+0x8995/0xf2d0 drivers/tty/vt/vt.c:2808 Code: 00 00 fc ff df 8a 04 08 84 c0 0f 85 29 52 00 00 48 8b 84 24 a0 00 00 00 0f b7 00 41 81 e7 ff ff ff 7f 48 8b 7c 24 38 4c 89 f9 66 ab 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 48 8a 04 01 84 RSP: 0018:ffffc90001d0f8e0 EFLAGS: 00010202 RAX: 0000000000000e20 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 000000010000000e RDI: 000000010000000e RBP: ffffc90001d0fbd0 R08: 000000010000000e R09: ffffffff83f23416 R10: ffff8880616b4640 R11: 000000000000001c R12: 0000000000000000 R13: 00000000ffffffff R14: 0000000100000010 R15: 0000000000000001 FS: 00007f5c78617700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000010000000e CR3: 000000009f01d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600