block nbd2: Receive control failed (result -107)
BUG: unable to handle kernel paging request at ffff888001000220
IP: __writel arch/x86/include/asm/io.h:71 [inline]
IP: fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline]
IP: cfb_imageblit+0x847/0xe40 drivers/video/fbdev/core/cfbimgblt.c:300
PGD c9c5067 P4D c9c5067 PUD c9c6067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 13500 Comm: syz-executor.5 Not tainted 4.14.212-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880459e21c0 task.stack: ffff888046058000
RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline]
RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline]
RIP: 0010:cfb_imageblit+0x847/0xe40 drivers/video/fbdev/core/cfbimgblt.c:300
RSP: 0018:ffff88804605f2a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8882388a1349 RCX: 0000000000000004
RDX: 000000000002795f RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffff888001000224 R08: ffff8882388a134f R09: 0000000000000000
R10: ffff8880459e2ae8 R11: 0000000000000010 R12: dffffc0000000000
R13: 0000000000000004 R14: 0000000000000004 R15: ffff888001000220
FS:  00007f6428790700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000220 CR3: 00000000af29e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1208 [inline]
 vga16fb_imageblit+0x630/0x2140 drivers/video/fbdev/vga16fb.c:1261
 soft_cursor+0x50a/0xa50 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0xf7a/0x1580 drivers/video/fbdev/core/bitblit.c:377
 fbcon_cursor+0x480/0x640 drivers/video/fbdev/core/fbcon.c:1287
 set_cursor drivers/tty/vt/vt.c:603 [inline]
 set_cursor+0x189/0x1e0 drivers/tty/vt/vt.c:594
 con_flush_chars drivers/tty/vt/vt.c:2885 [inline]
 con_flush_chars drivers/tty/vt/vt.c:2874 [inline]
 con_write+0x81/0xa0 drivers/tty/vt/vt.c:2806
 do_output_char+0x4f5/0x750 drivers/tty/n_tty.c:447
 process_output drivers/tty/n_tty.c:514 [inline]
 n_tty_write+0x3e3/0xda0 drivers/tty/n_tty.c:2345
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 __kernel_write+0xf5/0x330 fs/read_write.c:501
 write_pipe_buf+0x143/0x1c0 fs/splice.c:797
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x326/0x7a0 fs/splice.c:626
 splice_from_pipe fs/splice.c:661 [inline]
 default_file_splice_write+0xc5/0x150 fs/splice.c:809
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973
 do_splice_direct+0x164/0x210 fs/splice.c:1061
 do_sendfile+0x47f/0xb30 fs/read_write.c:1441
 SYSC_sendfile64 fs/read_write.c:1502 [inline]
 SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e149
RSP: 002b:00007f642878fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e149
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 000000000119c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0800000080004103 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007fffa88e411f R14: 00007f64287909c0 R15: 000000000119c0dc
Code: 0f b6 3c 26 48 89 c6 83 e6 07 83 c6 03 40 38 fe 7c 09 40 84 ff 0f 85 8f 05 00 00 8b 7c 24 20 49 8d 6f 04 23 38 8b 44 24 10 31 f8 <41> 89 07 45 85 f6 75 0f e8 bc 27 15 fe 48 83 c3 01 41 be 08 00 
RIP: __writel arch/x86/include/asm/io.h:71 [inline] RSP: ffff88804605f2a0
RIP: fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline] RSP: ffff88804605f2a0
RIP: cfb_imageblit+0x847/0xe40 drivers/video/fbdev/core/cfbimgblt.c:300 RSP: ffff88804605f2a0
CR2: ffff888001000220
---[ end trace 9de4b4a27ca2f78c ]---