BUG: unable to handle kernel paging request at ffff888001000090 PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 27343 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:writew arch/x86/include/asm/io.h:66 [inline] RIP: 0010:vga_8planes_imageblit drivers/video/fbdev/vga16fb.c:1140 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1203 [inline] RIP: 0010:vga16fb_imageblit+0x18a1/0x2260 drivers/video/fbdev/vga16fb.c:1260 Code: 89 fe 48 c1 ee 03 44 0f b6 04 1e 48 89 fe 83 e6 07 83 c6 01 44 38 c6 7c 09 45 84 c0 0f 85 59 04 00 00 66 0b 8c 00 40 be b9 88 <66> 89 4d 00 48 8b 44 24 10 41 83 c4 01 0f b6 00 84 c0 74 08 3c 03 RSP: 0018:ffff88809e71f210 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: 0000000000000001 RDI: ffffffff88b9be40 RBP: ffff888001000090 R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000007 R13: ffff888238d65c00 R14: 0000000000000000 R15: 0000000000000007 FS: 00007fb7590eb700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000090 CR3: 00000000913a2000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0x1126/0x1740 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x531/0x710 drivers/video/fbdev/core/fbcon.c:1312 set_cursor drivers/tty/vt/vt.c:915 [inline] set_cursor+0x1dd/0x230 drivers/tty/vt/vt.c:906 con_flush_chars drivers/tty/vt/vt.c:3243 [inline] con_flush_chars drivers/tty/vt/vt.c:3232 [inline] con_write+0x8f/0xb0 drivers/tty/vt/vt.c:3164 do_output_char+0x5de/0x850 drivers/tty/n_tty.c:445 process_output drivers/tty/n_tty.c:512 [inline] n_tty_write+0x46e/0xff0 drivers/tty/n_tty.c:2343 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x770 fs/read_write.c:485 __kernel_write+0x109/0x370 fs/read_write.c:506 write_pipe_buf+0x153/0x1f0 fs/splice.c:798 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x389/0x800 fs/splice.c:627 splice_from_pipe fs/splice.c:662 [inline] default_file_splice_write+0xd8/0x180 fs/splice.c:810 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb75a776109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb7590eb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fb75a888f60 RCX: 00007fb75a776109 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 00007fb75a7d00ad R08: 0000000000000000 R09: 0000000000000000 R10: 0800000080004163 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf3e1525f R14: 00007fb7590eb300 R15: 0000000000022000 Modules linked in: CR2: ffff888001000090 ---[ end trace 63ef1cf7d2b75552 ]--- RIP: 0010:writew arch/x86/include/asm/io.h:66 [inline] RIP: 0010:vga_8planes_imageblit drivers/video/fbdev/vga16fb.c:1140 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1203 [inline] RIP: 0010:vga16fb_imageblit+0x18a1/0x2260 drivers/video/fbdev/vga16fb.c:1260 Code: 89 fe 48 c1 ee 03 44 0f b6 04 1e 48 89 fe 83 e6 07 83 c6 01 44 38 c6 7c 09 45 84 c0 0f 85 59 04 00 00 66 0b 8c 00 40 be b9 88 <66> 89 4d 00 48 8b 44 24 10 41 83 c4 01 0f b6 00 84 c0 74 08 3c 03 RSP: 0018:ffff88809e71f210 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: 0000000000000001 RDI: ffffffff88b9be40 RBP: ffff888001000090 R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000007 R13: ffff888238d65c00 R14: 0000000000000000 R15: 0000000000000007 FS: 00007fb7590eb700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000090 CR3: 00000000913a2000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 fe mov %edi,%esi 2: 48 c1 ee 03 shr $0x3,%rsi 6: 44 0f b6 04 1e movzbl (%rsi,%rbx,1),%r8d b: 48 89 fe mov %rdi,%rsi e: 83 e6 07 and $0x7,%esi 11: 83 c6 01 add $0x1,%esi 14: 44 38 c6 cmp %r8b,%sil 17: 7c 09 jl 0x22 19: 45 84 c0 test %r8b,%r8b 1c: 0f 85 59 04 00 00 jne 0x47b 22: 66 0b 8c 00 40 be b9 or -0x774641c0(%rax,%rax,1),%cx 29: 88 * 2a: 66 89 4d 00 mov %cx,0x0(%rbp) <-- trapping instruction 2e: 48 8b 44 24 10 mov 0x10(%rsp),%rax 33: 41 83 c4 01 add $0x1,%r12d 37: 0f b6 00 movzbl (%rax),%eax 3a: 84 c0 test %al,%al 3c: 74 08 je 0x46 3e: 3c 03 cmp $0x3,%al